Mario-style platformer · minimax-m3.1-flash

Phaser 3 presumably. Let me build the game.

Plan: single index.html with inline CSS/JS, script src="phaser.min.js", Phaser game config, generated textures via Graphics.

Let me write it carefully.

Level design: platforms array, coins, enemies (goombas patrolling), goal flag at end.

Physics: arcade. Use arcade physics with static group bodies for platforms, tile-ish rects.

Player: sprite from generated texture. Textures: player (mario-like with cap), enemy, coin, ground tile.

I'll generate textures with graphics in a create() function using scene.textures.createCanvas.

Let me write.

Key details:
- prevent repeated mid-air jumping: check body.blocked.down / touching.down.
- landing on enemy from above: in update check overlap between player and enemies; if player.body.velocity.y > 0 and player bottom above enemy center → kill enemy, bounce player (setVelocityY(-400)).
- side contact → lose.
- falling into gap: player y > level bottom → lose.
- coins: overlap → destroy, count++.
- goal flag: overlap → win state.
- camera: follow player, bounds set to level width, height.
- Restart: scene.restart() resets everything; show camera position reset too.

I'll implement restart via restart button in DOM overlay? Simpler: text object "Restart" in game that is clickable, plus key R. Requirement: "Provide Restart that resets coins, enemies, player, and camera." Use scene.scene.restart() which recreates everything.

HUD: DOM overlay for coins count and status? Use Phaser text in game, plus DOM. I'll do DOM overlay for controls & status, and Phaser text for coin count. Actually simpler to keep both in DOM updated via events. But restart resets; I'll re-render DOM in scene create. Let's use DOM elements and update them.

Let me do: DOM top-left panel with "Coins: 0", status message. Phaser camera follow etc.

Physics details: player sprite origin default center; setSize.

Level: world width 4800, height 800? Let's make viewport 1200x800 (browser viewport 1200x800, canvas scaled). Config width 1200 height 800, scale FIT.

Layout platforms (y from top). Ground level at y=680 (platform top). Gaps between ground segments.

Platforms list:
- ground seg1: x 0..900, y 680
- gap 900..1080
- ground seg2: 1080..1500
- gap
- elevated platform 1600..1800 at y 520
- ground seg3: 1800..2400 y 680
- gap 2400..2560
- ground seg4: 2560..3200 y 680
- floating platform 3200..3400 at y 500
- ground seg5 3400..3800 y 680
- gap 3800..3960
- ground seg6 3960..4400 y 680
- flag at 4300 on ground.

Coins along platforms, some over gaps above.

Enemies patrolling on ground segments: use group with arcade physics, setVelocityX ±60, and patrol bounds - simplest: give each enemy a min/max x and reverse when exceeding. Also turn around at walls (blocked.left/right).

Enemy generation: for each ground segment place enemy with patrol range within segment.

Camera bounds: 0..levelWidth, 0..800.

Player start at x=60, y=600.

Death: fall below y>900 → lose. Also maybe 3 lives? Keep single life: lose state shows "Game Over" overlay with Restart button.

Enemy stomp: check overlap each frame.

Let me write code.

Textures generation: use scene.make.graphics or graphics.generateTexture.

Player texture: 32x44: body blue, head skin, red cap.
Enemy: 30x28 brown.
Coin: 16x16 gold circle with shine.
Flag: pole + flag drawn at goal.

I'll draw flag as static image.

Let's write the file.

Collision: platforms as staticGroup with images using 'ground' texture (a tile 64x64 filled brown with grass top). Simpler: create rect texture via graphics 32x32 solid color and use tileSprite? Use setDisplaySize? Static bodies sized per platform: create image with texture 'ground' and setDisplaySize(width,height) — arcade body uses display size for image. Use refreshBody.

Better: create separate textures: 'ground' (green top, brown bottom) 32x32; setDisplaySize scales both. Fine.

Floating platforms: 'brick' texture.

Enemies: body gravity so they rest on ground; set immovable? They'll collide with static platforms automatically since they're in physics group with collider vs static group.

Let's code update loop:

player keys: cursors + A/D. Space jump. Use justDown.

Stomp check: in update, iterate enemies.getChildren(), if enemy.active: if player.body.velocity.y > 0 && player.body.bottom <= enemy.body.top + 12 && overlap → kill.

Use physics.overlap(player, enemies, callback) and in callback determine.

Implement overlap callback: this.physics.overlap(this.player, this.enemies, (p,e)=>{...}) called in update.

But overlap triggers also when standing on enemy? Fine.

Ground check for jump: this.physics.world.collide with platforms handles; use p.body.blocked.down or touching.down.

Coins: this.physics.overlap(player, this.coins, ...) → disable coin (coin.setActive(false).setVisible(false); coins.count++). Ensure count increments once: disable body.

Flag: overlap player with flag zone → win.

Also enemy collider: this.physics.collider(player, enemies) would block player; instead we handle via overlap and set player velocity x unaffected. But enemy walking into player... with overlap only, player passes through and overlap fires each frame → repeated loss trigger, but we set state to lose so fine. However overlap fires when stomp too — check stomp condition first.

Order: in overlap callback, first check stomp condition; if stomp → kill enemy, bounce. else → lose.

But when player stands on enemy top and enemy overlaps player, velocity.y may be ~0 and body.bottom might be at enemy top → bottom <= top+12 true → treated as stomp repeatedly. After stomp we destroy enemy so fine. But enemy walking into player from side while player grounded: player.velocity.y ~0, bottom is way below enemy top → side contact → lose. Good.

Edge: player falling onto enemy but enemy below: velocity.y>0 and bottom <= enemy.top+12 works.

Camera: this.cameras.main.setBounds(0,0,levelWidth,800); startFollow(player, true, 0.08, 0.08); camera.setDeadzone.

Restart: DOM button "Restart" calls scene.scene.restart(). Also key R.

Verify camera position returns: camera.scrollX 0 after restart.

Let's write index.html.

Also need camera follow with bounds; set camera zoom maybe 1.

Write now.

Note: goalZone physics overlap — zone has no texture; overlap with zone works? Arcade overlap uses body bounds; zone has a body (setSize via add.zone gives a body of size 56x100). But zone physics body: add.zone creates a game object with a body of size width/height. Actually Phaser Zone has a body component (PositionBody) with setSize. By default zone width/height become body size. Should work.

Also zone origin is 0.5 by default? Zone origin default 0.5. Position of zone at flagX-14, GROUND_Y-50 with size 56x100 → spans x flagX-42..flagX+14, y GROUND_Y-100..GROUND_Y. Good.

Also `this.platforms.createMultiple = null;` is weird leftover — remove.

Also player body setSize(26,44,true) with origin (0.5,1) fine.

Enemy flipX for texture: enemy texture asymmetric, flip fine.

Let's run browsercheck.

refreshBody not a function — for static bodies added via physics.add.existing(img, true), the body is a StaticBody which lacks refreshBody. Need to set display size before adding, or use img.setSize then body.updateFromGameObject? For static body, use `p.setSize(w,h)` before adding? Static body size derived at creation from gameObject size.

Approach: create image, setDisplaySize, setSize(w,h) then physics.add.existing(p, true) — body created from gameObject's width/height. Actually StaticBody.updateFromGameObject uses gameObject.width/height (displayWidth?). Let's just set size and position origin 0,0 and use setSize.

Better approach: use `this.physics.add.staticImage(x, y, 'ground')` then setDisplaySize and setSize, then body.setSize. StaticBody has setSize? StaticBody has setSize(width,height) method? StaticBody extends... it has setSize in Body-ish? StaticBody has `setSize(width, height, center)` — yes, StaticBody.setSize exists in Phaser 3.

Simplest: create image with origin 0, setDisplaySize(w,h), setSize(w,h), then physics.add.existing(p,true). The static body will use gameObject width/height which after setSize is w,h (scale 1). Let's do that.

Actually setSize sets width/height on game object; the body then uses that. But rendering uses displayWidth which is scale-based. Fine.

Let me apply.

But setSize on image changes width/height but the display size stays 32x32 (scale 1) — rendering would be tiny. Need to also setDisplaySize. Order: setDisplaySize(w,h) then setSize(w,h)? setDisplaySize sets scale; setSize sets width/height independent of scale. Set both: display shows scaled texture (w x h) while body uses setSize (w,h). But body for static body: updateFromGameObject uses gameObject.width/height (which are setSize values) and position. Good.

But careful: setSize(w,h) sets width/height; rendering of image uses width*scale? In Phaser, Image render uses frame displayWidth based on scale. setSize sets `this.width` and `this.height` properties but displayWidth = width*scale stays? Actually displayWidth getter returns frame.realWidth * scaleX. setSize sets width/height and updates displayWidth? Let's check: GameObject.setSize sets this.width/this.height and calls updateDisplayOrigin. displayWidth is separate. So setDisplaySize(w,h) sets scaleX=w/32, and displayWidth = 32*scale = w. Then setSize(w,h) sets width=w, height=h. Both consistent. Order matters little. Let me add setDisplaySize too.

Also for player body setSize(26,44,true) - the sprite's frame is 32x44, fine.

Also enemy: body default from texture 30x28, origin 0.5,1 — ok.

Also the tween on coin changes y but coins are physics bodies with allowGravity false; tween modifies y directly, body syncs? Position bodies need body.updateFromGameObject or setPosition. For arcade non-gravity body, body.position syncs from game object? In Arcade physics, Body.preUpdate reads gameObject position for non-immutable bodies. Actually for dynamic bodies with allowGravity false, the body still syncs via body.preUpdate() which reads gameObject.x/y. Yes — body.updateFromGameObject is called in preUpdate for dynamic bodies. So tween works.

Let me addsetDisplaySize.

But setSize on an image with origin 0,0 — for static bodies added via physics.add.existing(p, true), body size is set from gameObject width/height at creation time. Since we set size before adding existing, it should be right. Actually StaticBody uses gameObject width/height... For image with displaySize set, width/height properties are the source size (32x32) scaled. Hmm — Image.setDisplaySize scales, and width getter returns frame width * scaleX? In Phaser 3, GameObject width = frame realWidth * scaleX? Actually `width` for Image returns `this.frame.realWidth * this.scaleX`? Let me recall: GameObject has width/height set via setSize; displayWidth = width*scaleX. Actually Image's width property returns `this.frame.realWidth` — no, in Phaser 3 `width` and `height` are settable via setSize and `displayWidth` is width*scale. For Image, setSize sets width/height to the given values, and setDisplaySize sets scale based on width/height.

Order matters: I called setDisplaySize(w, GROUND_H) then setSize(w, GROUND_H). setDisplaySize sets scale so that displayWidth = w. Then setSize(w,h) sets width=w height=h, so displayWidth becomes w*scale = 2w. Oops.

Better: setSize(w,h) then setScale(1)? But then texture stretched? Image draws the texture at frame size 32x32 scaled by scale — setSize only affects body, not rendering... Actually for Image, setSize overrides width/height used for display size calc but texture rendering uses frame with scale. Hmm, Image render uses `this.frame` and scale. setSize on an Image doesn't change the visual.

Simplest: use setDisplaySize only (sets scale), and physics body for static body uses gameObject.width/height... For static body, body width = gameObject.width * scale? Let me just test empirically. Actually Phaser StaticBody.updateFromGameObject uses gameObject.width/height divided by scale? The documented behavior: "The width/height of the body is set from the game object's width/height, divided by its scale."

Safer: use graphics-generated rectangles instead of images for platforms, or use a TileSprite. Easiest: create a rectangle game object via scene.add.rectangle and physics.add.existing(rect, true) — Rectangle has width/height and no scale issues.

Let me instead create platform images with tileSprite? tileSprite with width/height works: add.tileSprite(x,y,w,h,'ground') — physics body from width/height, renders tiled texture. Good for ground. For brick floating platforms, tileSprite too.

But then grass top appears tiled — fine.

I'll use tileSprite for both. TileSprite width/height are the display size and body uses them.

Let's rewrite platform creation with tileSprite.

Also I should double-check `setSize` interplay for player: player sprite 32x44 with body setSize(26,44,true) — fine.

Also coins tween changes y but the physics body position won't follow unless allowGravity false and body updated. Arcade body follows the sprite position each frame for dynamic bodies (body.position updates from gameObject). Yes, dynamic bodies sync position from gameObject each preUpdate. Good.

Also the enemy overlap: `en.getData('stomp')` never set — fine, always "walker".

Also coins: after disableBody, they get removed from group? disableBody(true,true) removes from group by default (removeFromScene). The coins group count: fine.

Also "coins visible" restart check — count resets.

Enemy patrol: e.getData('dir') with setData on image — fine, but I set velocityX each frame anyway.

Ground segments: gaps between them of width 180/200 — jumpable? Jump velocity -560 with gravity 1750 → apex height = 560²/(2*1750) = 89.6 px. Airtime = 2*560/1750 = 0.64s; at 240 px/s → 153px horizontal. Gap 180px wide is too wide. Reduce gaps to ~120px, and/or increase jump. Let me set jump -620, gravity 1700 → apex 113, airtime 0.73s → 175px horizontal. Make gaps 120-140.

Also platform at height 500 above ground 700: 200px above → unreachable. Floating platforms should be within reach: e.g. y=600 (100 above) and 560? Max jump height 113 px. So platforms up to ~95px above ground surface. Let me place floating platforms at GROUND_Y-80 = 620 and 600.

Let me restructure level data with proper gaps.

Ground segments with 120px gaps:
[0,900],[1020,480],[1620,560],[2300,560],[2980,480],[3580,700],[4400,800] with 120 gaps and last ends 5200.

Floating platforms: over gaps or between, at y = GROUND_Y-90 (=610) and some at -80.

Coins placed above ground at GROUND_Y-40=660 ok, and above floating platforms.

Also coin tween moves y -8, fine.

Rewrite the level section.

Also enemies: patrol within segment min/max.

Goal at 5050 within last segment [4400,5200]. Good.

Let me rewrite those parts.

Also the goal flag at 5050 with pole image height 96; ground segment [4400,800] ends at 5200, ok. But the flag zone position: flagX-14 = 5036. Player must reach. Fine.

Also enemies need y on ground: GROUND_Y-20 with origin 0.5,1 -> bottom at 700, fine.

Reload and check.

Enemies added with physics.add.existing(e, true) → static body, so no setAllowGravity. I want dynamic bodies for enemies. Use physics.add.existing(e, false) and setAllowGravity on body. Actually for a sprite, add existing as dynamic body: this.physics.add.existing(e) then e.body.setAllowGravity(true). Also need bounce etc. Let me change to dynamic.

Also colliders with platforms need dynamic bodies. Fix.

Also player setSize(26,44,true) — fine for dynamic body. But player sprite frame is 32x44.

Also coins: I used this.physics.add.existing(c, false) then group — the group add of a body-having object is fine, but group created with allowGravity false... adding object to group doesn't change body. Coin bodies have gravity by default → they'd fall. I should set c.body.setAllowGravity(false) and immovable. Let me handle.

Actually simpler: don't add physics to coins; instead use overlap with manual distance check, or use a group of zones. Easiest: keep physics but set allowGravity(false), immovable true.

Note the coin tween moves y — physics body position follows? For non-gravity dynamic bodies, arcade physics syncs body position from game object? Actually for dynamic bodies the physics updates the game object position, overwriting tween. Hmm — in Phaser arcade, body position is updated from gameObject each step (body.updateFromGameObject? ) Actually Body.preUpdate reads gameObject position for dynamic bodies and applies velocity... Let me recall: In Arcade Physics, `Body.preUpdate` sets `this.position.x = gameObject.x - ...`? Yes: Body.preUpdate copies the game object position into the body (this.sourceTransform / this.position = gameObject x,y) then integrates velocity. So tween-driven y would be overridden-ish but it does read the gameObject position each frame, so the tween still works since preUpdate copies gameObject position into body. But then velocity integration adds gravity... with allowGravity false and velocity 0 it stays. But the tween sets y, preUpdate reads it. Should be OK.

Simpler and safer: use zones for coin detection? Overlap requires physics bodies. I'll keep coins as physics with allowGravity false, immovable true, and instead of tweening the coin, animate via setScale? Just skip tween or use a separate display approach. I'll keep the tween but verify visually.

Let's fix the enemy and coin bodies.

Also goalZone: physics.add.existing(zone, false) — zones with physics: need body. Arcade zone body requires setSize? Zone has width/height; physics.add.existing on a Zone creates a body? Zone is a GameObject with no texture; physics.add.existing should create body but body size may be 0. Let me instead use an invisible rectangle. I'll change goalZone to this.add.rectangle with physics, invisible.

Also the coin group with allowGravity false — but coins added via physics.add.existing individually, group config won't apply. Fine, I set gravity individually.

Let me replace goalZone with a rectangle.

Also camera: level width 5200, but ground segment ends at 5200. Flag at 5050. OK.

Also player body setSize(26,44,true) - the player texture is 32x44, fine.

Also the "enemy defeated" detection: pl.body.bottom - en.body.top < 18 — with player bottom above enemy top. Fine.

Also coin disableBody(true,true) removes from group, so coinTotal counting is fine but the coin group length changes. Fine.

Also on restart, ui.setCoins(0, total) — good.

Camera restart: scene.restart resets camera.

Let's also handle player falling below world: p.y > DEATH_Y.

Change goal zone.

setBounce on an Image not yet in a physics-enabled body? Actually physics.add.existing(e,false) creates a body, so setBounce should exist... but error says e.setBounce is not a function — for Image, setBounce is a Component method only on GameObjects with body? Body provides setBounce. Actually Arcade physics adds body components; the body has setBounce. Game object doesn't. Use e.body.setBounce(0). Also player.setBounce(0) same issue — player is a sprite added via physics.add.sprite, which has setBounce (component added by physics). Fine.

Fix e.body.setBounce(0).

Also player.setCollideWorldBounds(false) fine.

Also enemies.setBounce -> body.

Also for player: p.setVelocityY etc fine.

Note player origin 0.5,1 with body size 26,44 — setSize on sprite.

Letme fix.

Also player.setBounce, player.setCollideWorldBounds may not exist on Sprite with physics.add.sprite — actually physics.add.sprite gives full arcade sprite methods. Fine.

Reload.

These errors come from `this.enemies.add(e)` — adding to a group created with `this.physics.add.group({allowGravity:true})` — that shouldn't strip methods. Wait, error is e.setVelocityX is not a function. Actually `this.enemies.add(e)` doesn't strip. Hmm, but the group was created via `this.physics.add.group({allowGravity: true})` — createDefaultGroup? Actually `physics.add.group(config)` creates a group with default class = Group, not a sprite. But e is a sprite, so setVelocityX should exist... unless the sprite's body is static? No, setVelocityX on sprite exists regardless (Phaser.Physics.Arcade.Sprite). But `this.add.image()` returns a plain Image, which doesn't have setVelocityX — body has it. Right! Image doesn't have setVelocityX; Sprite does. Similarly setBounce missing earlier for the same reason.

So use e.body.setVelocityX, and body.setBounce etc. Let me switch enemy creation to this.physics.add.image (creates Sprite). But `this.add.image` + physics.add.existing works, but methods differ. Simplest: use this.physics.add.image(x,y,'enemy').

Also for the player, this.physics.add.sprite is fine.

Also coins use this.add.image + body — I use c.body.setAllowGravity, fine; but the group this.coins = physics.add.group({allowGravity:false, immovable:true}) — config only applies to group defaults for members? When adding existing object via this.coins.add(c), config of group applies to children created via group.create, not add(). I set body manually anyway.

Let me convert enemies to physics.add.image.

Also `this.physics.add.staticGroup()` for platforms is fine with tileSprite added via physics.add.existing(p, true).

Also `player.setBounce` — player is physics.add.sprite so fine.

Also `p.setCollideWorldBounds(false)` fine.

Let's fix enemies.

Wait — the error "e.setVelocityX is not a function" was for enemies? Actually enemy was created with this.add.image → that's a plain Image, no physics methods. I changed to physics.add.image which has setVelocityX. But the collision group add. Also the player: this.physics.add.sprite has setVelocityX fine — the error might be about enemies in the update loop (e.setVelocityX). Yes.

Also the group this.enemies = this.physics.add.group({allowGravity:true}) — adding a physics.add.image to group is fine. But group config allowGravity only applies to create(). Fine since I set manually.

Also `this.enemies.add(e)` — group.add works. But `this.enemies.getChildren()` ok.

Coins: this.add.image then physics.add.existing(c,false) — that adds a body to a plain Image, that's fine but then coins group has physics bodies. Actually simpler: use physics.add.image for coins too. But group config immovable/allowGravity false applies on add? For group.add of existing object, config not applied. I set body manually anyway. But tween on c.y while physics body is dynamic... body position follows gameobject? For a dynamic body, the body drives position, so tween would fight. Better: make coins static-ish: use physics.add.image with body immovable & allowGravity false, and tween a separate visual. Simplest: don't tween coin position; instead tween scale. Let me change tween to scale pulse and keep coins static bodies.

Actually coins as static group members: use this.coins = this.physics.add.staticGroup()? Overlap with static group works. Let's create coin via this.add.image and add to a plain group, and do overlap manually? Overlap requires physics bodies. Use physics.add.staticGroup and add static images.

Let's do: this.coins = this.physics.add.staticGroup(); c = this.add.image(...); this.coins.add(c) — static group requires the game object to have a static body; adding a plain image to static group won't give body. Instead use this.physics.add.image and set body immovable, allowGravity false, then add to group created with physics.add.group({allowGravity:false, immovable:true}) — but adding existing doesn't apply config; set manually. Body immovable prevents being pushed; gravity still applies though (immovable bodies ignore gravity? In arcade, immovable bodies are not moved by velocity integration? Actually immovable bodies don't get velocity applied by gravity... hmm, arcade Body.update: if body.immovable, position isn't updated from velocity? I believe immovable bodies skip movement entirely). Safer: body.setAllowGravity(false) and setVelocity(0).

Also tween on y with dynamic body: body position overrides the display position each frame (body.update syncs gameobject x/y from body). So the tween would be reverted. Use scale tween instead.

Let me update coins.

Rendering works. Issues:
1. Coin count already 1/60 at start — a coin spawned at x=60 overlapped the player? The player is at x=70. Ground coins start at x+60 = 60. Move coins start at x+90 maybe. Actually player at 70 overlaps coin at 60. Fix: start ground coins at x+120.
2. Clouds/hills not visible? Hills are at y=640 which is behind ground maybe. Clouds missing — maybe drawn but depth negative behind sky? I drew sky via graphics first, then clouds at depth -4 — the graphics sky object default depth 0, so clouds at -4 render behind the sky. Fix: draw sky with depth -10.
3. Player looks like standing at ground fine.

Let me fix depths and coin start offset. Also camera bounds: level width 5200 but last ground segment ends at 5200 — fine.

Also floating platforms look reachable.

Let me also check hills depth.

Also camera doesn't show clouds/hills earlier? Hills were probably drawn but behind sky (depth -3 vs sky depth 0 → sky covered). Now fixed.

Also initial coin count 1/60 — a coin was collected at start because coin at x=60 overlapped player at x=70. Fixed by starting coins at x+130.

Also the level has only 60 coins? count seems low given loop. Fine.

Now reload andtest.

Looks good. Hills are drawn too high/large overlapping the ground - they look fine actually (mountains behind). But the hills appear in front? They are behind ground. Fine.

Note ground looks like grass at top only at the very top? The tileSprite repeats the ground texture; top row shows grass. Good.

Now test movement: press Right arrow key and jump.

Also camera starts at 0? Camera follows player at x=70, deadzone 240 → camera scrollX = 0. Fine.

Let's test running right and jumping.

Player moved slightly right (from 70 to ~75?). Key press is a quick tap. Better to use "key" with held? The tool sends keydown/keyup. I need held movement. Maybe use `text` with "ArrowRight" only presses briefly. Let's try action key with delta? Try pressing multiple times or use drag? Alternative: run scripted tests via browser evaluate? Not available.

Let me check whether the key press generates a short hold. The player moved ~5px, suggesting a brief hold. I'll try repeated key presses.

Actually, maybe I can add a debug hook: support URL params for testing. Simpler: press key multiple times in sequence and observe.

Let me try clicking on canvas first to focus, then press key multiple times.

Also better: use "key" action with text "ArrowRight" — maybe it supports holding via "keydown"? Let's test pressing space to jump and see if theplayer jumps.

The player jumped (y raised). Good. Movement: key press of ArrowRight only moved a tiny bit (single frame press). Key press simulation is instantaneous press+release. Let me hold key? The tool "key" with text — maybe it presses and releases. Player moved ~10px? Actually player at x=70 initially; now at ~73. Hmm, hard to tell. Let me test holding via multiple key actions or use drag. Let's try pressing key with repeated calls, or use browser evaluate? No eval tool. I'll just press ArrowRight many times.

Actually a better test: use "key" with text "ArrowRight" repeated. But the release happens quickly. Let's try clicking on the canvas first to focus then hold. Let me try key action with a longer hold possibility: action "key" text maybe supports "ArrowRight" only.

Alternative: I can add a test hook, but better: use drag on canvas? Drag doesn't move the player.

Let me try pressing ArrowRight several times in sequence andsee movement.

Player barely moves — key presses are single presses (keydown+keyup immediately). The browser tool's key action probably presses and releases. Movement is tiny (~5px). I need to hold key. Let me check if there's a way to hold — maybe the "key" action with repeated calls. Alternatively use browser evaluate? Not available. I can test movement by simulating via keyboard events using... only click/drag/key/scroll available.

Better: verify programmatically by evaluating in page? The inspect action may show DOM only. Let me try pressing key many times in sequence and see the player move. Or add a debug hook: expose window.__game and use console via... no eval tool.

Alternative: use `key` with text like "ArrowRight" repeated quickly - each key press is down+up within a frame, so movement minimal.

Maybe the key action supports holding if given a duration? Not documented. Let's try drag? no.

Let me try many key calls in one action? Not supported. I could dispatch synthetic keydown events via a URL hash that the game reads? Simpler: temporarily add a hidden debug: on load, if location.hash contains 'autotest', run scripted simulation. But better to test real behavior.

Let's just try the key action multiple times and see if position accumulates. Actually a single keydown/keyup with 1 frame of hold gives ~240px/s * (1/60) = 4px. We saw ~5px moves. So we need held keys.

Maybe the tool's key action presses the key and holds until next action? Player moved 5px total over 2 presses, so no.

Approach: add an autoplay test harness triggered by URL param, using keyboard plugin's simulateKeyDown? Phaser has `this.input.keyboard.addKey` and `key.isDown` only from real events. But Phaser keyboard plugin supports `this.input.keyboard.emitOnRepeat`... There's `Phaser.Input.Keyboard.Key` and we can simulate via `this.input.keyboard.manager.pluginEvents`? Simpler: simulate by directly setting player's velocity in a scripted test mode, but that's not testing input.

Alternative: use the browser "drag" to simulate a press-and-hold? Drag from canvas point... not keyboard.

Let me check if key action accepts something like "ArrowRight:2000" or a hold via delta. Let me try text "ArrowRight" with delta param? Unclear. Try passing text as "ArrowRight" and see.

Actually maybe the browser tool supports keyboard via `key` with text containing multiple keys? Let's test a simpler route: add a temporary test script that dispatches KeyboardEvent keydown/keyup with delays via setTimeout in the page, using a URL query param like ?test=1 which the page's own script uses to run a self-test. That's legitimate: I can add a small self-test harness to index.html (or a separate temp file) that dispatches key events to the canvas window and asserts behavior. Since events dispatched on window with `key`/`code` are picked up by Phaser keyboard plugin (it listens on window by default).

But the final artifact shouldn't include the test harness... I can add it temporarily and remove it. Or keep it but it's fine? Better keep index.html clean: do tests in a temp copy? The browser loads index.html in cwd. I could create test.html that loads phaser.min.js and index.html? No, index.html is a full page.

Plan: temporarily append a self-test script to index.html that runs when location.search includes 'selftest', then remove it after verification. Actually I could keep it permanently — harmless but adds noise. I'll add temporarily.

Simpler: write the test as a separate file `selftest.html` that includes index.html content? Meh.

Let's do: append to index.html before </body> a script that if URL has ?selftest, dispatches key events and reports to console/DOM. Then load index.html?selftest=1 and use browser inspect to read DOM results.

Also need the DOM canvas focus; Phaser keyboard listens on window by default (target: window). Dispatching KeyboardEvent on window with code 'ArrowRight'/'Space' should work.

Also canvas element focus: Phaser 3 keyboard plugin default target is window. Good.

Let me implement selftest: run sequences:
1. keydown ArrowRight for 1500ms -> check player x increased, camera scrollX increased.
2. keydown Space -> check player y decreased (jump), and check no double jump: press Space twice in air, verify only one jump (compare peak).
3. Collect coin: move right to overlap coin -> coins count increments once.
4. Stomp enemy.
5. Restart: press R -> player x reset to START_X, camera scrollX reset, coins back to 0.

That's a lot; implement as a scripted async sequence in-page logging to a DOM element with results, and read via inspect.

Let me write it.

Also before that, fix a bug: player flipX — I set flipX(true) for left, but texture drawn facing right? Cap brim at x=26 means facing right. Good.

Also the enemy "stomp" getData('stomp') undefined -> message says "walker" fine.

Another issue: coins overlapping player — coin group with allowGravity false, but I created coins as physics images and added to group; group's default config applies at create only. Fine.

Coin overlap: player is at START_X=70; nearest coin at x=130 → fine.

Also camera deadzone 240 wide: camera scrollX stays 0 until player passes ~ deadzone. Follow with lerp.

Also I should ensure the player can't jump infinitely; checked blocked.down.

Note: player.setSize(26,44) with origin (0.5,1) and body setSize(26,44,true) — the true centers body on texture? setSize(w,h,center) with center true centers the body relative to the game object frame; fine.

Let me now write the selftest script.

Also potential problem: `this.physics.overlap(this.player, this.coins, ...)` — the coins group was created with physics.add.group({allowGravity:false}) which doesn't set physics on existing? Actually physics.add.group with a config creates children via group.create with those physics defaults only for newly created ones; but I added existing physics images. Group's `add` on existing children doesn't change. The overlap works since children have bodies.

Wait: this.coins.add(c) where c already has a body — group.add is fine.

Also coins group immovable config not applied but I set immovable manually.

Another: `this.physics.add.group({allowGravity:false, immovable:true})` — creating group without default key; ok.

Now the selftest.

The selftest didn't trigger because reload preserved no query string. I need to navigate to index.html?selftest=1. The browser reload uses same URL. Can I navigate? There's no "goto" action. Maybe the tool supports entering URL by click? Let me try key with text? Hmm.

Alternative: make the selftest run always but only log to console (not visible). Actually console output is visible in inspect results. But always running a selftest that presses keys would interfere with manual testing. I could run it always but capture logs into a global array and read via inspect of DOM? The DOM dump shows document text. If selftest element exists, its text will appear in DOM output.

Simplest: enable selftest always but auto-trigger after load, and it will press keys — that conflicts with manual play checks. Instead, keep ?selftest gating, but find way to navigate. Maybe browser "reload" keeps URL; is there an action to navigate? Try action "key" with text? no.

I could add a query param check that also triggers on hash. But how to change URL? Perhaps using the browser tool's click on a link. I can add a link in the page "Run self-test" that navigates to ?selftest=1. But adding a dev link to the final artifact is undesirable but acceptable? Better: temporarily add, test, then remove.

Actually simpler: temporarily change the condition to always true, run tests, then restore. Let's do that.

The self-test doesn't seem to have run yet (screenshot taken immediately?). The inspect output earlier would show console logs. Let me wait and inspect console.

Key events dispatched on window aren't reaching Phaser (Phaser keyboard listens on window by default though... but cursor keys require the canvas/window focus; Phaser 3 keyboard plugin attaches to window by default and `keyboard.enabled`). Hmm, but real "key" action via browser tool also didn't move the player earlier? Earlier screenshots: player stayed at x=70 throughout. Actually earlier the first ArrowRight press — player at ~70 both times. So keyboard input isn't working at all.

Possible reason: Phaser keyboard input requires focus on the canvas; the browser tool may dispatch key events to the page but Phaser's listener is on `window` (default target is window). Should work. Unless `input.keyboard` plugin isn't ready at create time? Phaser Input.Keyboard plugin is added automatically. But createCursorKeys requires keyboard plugin present; no errors thrown.

Wait — maybe the issue is that key events dispatched without `keyCode`? Phaser 3 KeyboardPlugin uses event.keyCode for keys. Modern browsers: KeyboardEvent constructor with `key`/`code` doesn't set keyCode unless specified. Phaser 3.80 uses `event.keyCode` for key handling → 0. So dispatching synthetic events without keyCode fails. Real browser tool key press probably also sends keyCode? The browser tool's "key" action might use CDP Input.dispatchKeyEvent which sets keyCode properly... but earlier player didn't move. Hmm, but the very first ArrowRight press happened maybe before the game got focus; still should work.

Also `JustDown` for space requires key events too.

Let me test with real key press now that the game has focus (page loaded) and check via inspect of player x. But I can't read game state from DOM easily... I can add a debug output of player x in the DOM each frame. Let's add a small debug element updating player position (temporary), then use browser key actions.

Better: add temporary debug div showing x, camX, coins, state. Then use browser key actions to test real input.

Also, for Phaser keyboard, ensure the canvas has focus. Phaser listens on window for keydown by default (input.keyboard.target default = window? Actually default target is `window`? Phaser 3 KeyboardPlugin: `this.manager = this.game.input.keyboard`? The KeyboardPlugin has `target` default = window). Let me check phaser source for keyboard manager event listener.

Phaser keyboard listens on window by default (target: window). Dispatching KeyboardEvent on window should work... but the Phaser Keyboard plugin uses `event.keyCode` maybe, and modern KeyboardEvent constructor without keyCode gives 0. Phaser 3 KeyboardPlugin uses `event.keyCode` for `key` lookup? It uses `event.keyCode` in `processKeyDown`. Since our synthetic event has keyCode 0, the key isn't matched.

Real browser key presses (via tool) also failed to move the player. Hmm — the browser tool "key" action may send key events to the page. Player didn't move in the earlier test either. Maybe the canvas/window wasn't focused? Phaser listens on window for keydown by default (keyboard input target = window). Actually Phaser's KeyboardPlugin attaches to `window` unless target specified. The keydown should register.

But note the earlier screenshot after "ArrowRight" showed player slightly moved? Player at x=70 still at frame... Let's check: the browser tool's key action might dispatch to focused element. Let me instead have Phaser listen on document and also check the key state via the DOM. Alternatively, set the game's keyboard target explicitly.

Let me add `input: { keyboard: { target: window } }` — default is window anyway. Hmm.

Maybe the issue: Phaser 3 KeyboardPlugin processes events via `event.keyCode`, and browser-dispatched synthetic events via CDP have keyCode properly. The tool's key action likely uses CDP Input.dispatchKeyEvent, which sets keyCode. But the player didn't move. Possibly because the key press was very brief (keydown+keyup immediately) — Phaser registers isDown during the frame; if keydown and keyup happen between frames, isDown could be false at update time. That explains no movement.

So real holding is needed. My selftest holds with setTimeout, but the synthetic KeyboardEvent lacks keyCode → Phaser ignores. Let me include keyCode in the event init.

Let me fix the selftest to set keyCode, and also dispatch on document/window. Phaser's default target: `this.game.config.input.keyboard.target` default is window? In Phaser 3, KeyboardPlugin manager uses `this.game.config.inputKeyboardTarget` = window by default? Actually it's `window` unless `input.keyboard.target` set. Let's just dispatch on both window and document.

Also for keys, Phaser's Key objects use `event.keyCode`. Provide keyCode mapping: ArrowRight 39, Space 32, KeyR 82, KeyA 65, KeyD 68.

Better approach: use CDP real key events via the tool with hold? The tool only gives single key. Let me just fix synthetic events with keyCode.

But Phaser's keyboard plugin listens on window by default (input.keyboard.target default is window). Actually Phaser 3 keyboard events are attached to `window` by default? The KeyboardPlugin attaches to `game.input.keyboard` with target = window by default (config.input.keyboard.target). Yes default target is window. But key handling uses `event.keyCode`. Phaser's KeyboardManager onKeyDown uses event.keyCode. So dispatching on window with keyCode should work.

Let me test again.

Also real browser key presses earlier: the browser tool "key" action did dispatch real key events but the player didn't move. Maybe because Phaser keyboard target is the canvas? Actually Phaser default: `input.keyboard.target` defaults to window. Hmm but real key press didn't move player. Possibly the browser tool sends key to focused element; window listener should still receive via bubbling? If focus is on document.body, window gets keydown. Hmm.

Maybe the issue is that the earlier real keypress worked but the player was at x=70 and had... no, screenshot after ArrowRight showed player still at 70.

Maybe the canvas wasn't focused and Phaser's keyboard plugin default target is `window`? Let me check phaser source for 'keyboard' target default.

Phaser keyboard plugin attaches to window by default via `input.keyboard.target` default window. Actually Phaser 3 Keyboard plugin: `this.manager.onKeyDown`... The plugin's `target` default is `window`. In Phaser 3.80 the KeyboardPlugin listens on `window` unless `input.keyboard.target` is specified. But wait, the earlier browser key press (ArrowRight via browser tool) also didn't move the player. Hmm, the browser key press did dispatch real key events to the page — but the canvas may not have focus, and Phaser keyboard listens on window by default so it should work... unless the game canvas needs focus.

Actually the issue: Phaser's KeyboardPlugin in 3.x default target is `window`, but it only processes events when `this.enabled`. Should be fine. But maybe the issue is that the game's DOM focus: browser tool key events go to the page; window should receive them.

Let me check phaser source for how keydown is captured.

Phaser keyboard plugin attaches to window by default (target = window). But the browser tool's `key` action apparently doesn't move the player either — the player stayed at x=70 after ArrowRight presses. Maybe the canvas doesn't have focus, or Phaser's keyboard manager listens on window but the tool's key events go to the page... Actually the earlier direct press also didn't move the player. Hmm, but keydown listeners are on window, so should fire.

Wait — Phaser 3 keyboard: `this.input.keyboard` — the KeyboardPlugin is attached to `game.input.keyboard`, whose manager listens on window by default. But the issue: Phaser 3.80 uses `event.keyCode` and checks `event.keyCode`. The browser tool's key press likely uses `key` property properly. Hmm.

Actually possible issue: Phaser's keyboard manager by default has `target: window` — but only if `input.keyboard.target` is set; otherwise it uses window. Fine.

Another possibility: the game canvas isn't focused and the browser tool sends keys to the page, which should still bubble to window.

Let me test directly: dispatch synthetic event on window and check `Phaser.Input.Keyboard.JustDown` — my selftest used synthetic events with keyCode and it also failed (x stayed 70). That suggests Phaser isn't receiving events at all, or the keyboard plugin isn't enabled.

Wait: In Phaser 3, `this.input.keyboard` requires the scene input plugin; it's automatic. But `createCursorKeys` etc work. The KeyboardPlugin `startListeners` is called on 'ready'. Hmm.

Possibly the issue: Phaser's KeyboardPlugin by default has `input.keyboard.enabled` true, but scene input is only active when the scene is running and `input` enabled... default true.

Another likely culprit: Phaser's key handler requires `event.keyCode` — I provided that. But Phaser 3.80 checks `event.keyCode`? It uses `event.keyCode` in `onKeyDown` mapping via `event.keyCode`. Actually modern Phaser uses `event.keyCode` still.

Hmm, maybe the problem is the KeyboardManager's `target` default is `window` but it checks `document.hasFocus`? No.

Let me debug in the browser: evaluate via console? The browser tool doesn't offer JS eval. I can add debug output to the page: display keyboard state in the DOM HUD.

Alternative: Phaser listens on `window` but the game canvas is inside; keyboard events should reach window regardless.

Let me check Phaser's InputManager: `this.keyboard`? Actually InputManager creates `KeyboardManager(this.game)`? The KeyboardPlugin is in scene.input; the KeyboardManager (game.input.keyboard) starts listeners when `game.events.emit('ready')`? The manager's `startListeners` is called by KeyboardPlugin `boot`? Let's grep for "startListeners" usage.

Phaser listens on window by default (target = window). The event listeners are on window with capture=false. Dispatching on window should work. But the earlier browser "key" press also didn't move the player. Maybe the issue is that the game canvas doesn't have focus, and the browser tool key press dispatches to the page... but window listener should still fire. Unless Phaser listens on `this.target` = window and the browser tool dispatches keydown on document.body — which bubbles to window, so it should work.

Hmm, but Phaser's onKeyDown checks `e.defaultPrevented`. And it uses `event.keyCode`. Our synthetic events have keyCode set. But `key` field for Space I set to ' '.

Wait — maybe the issue is the game only starts listening after "ready"? The manager's `enabled` should be true.

Let me check: maybe the problem is Phaser 3.80's KeyboardPlugin uses `event.key` / `event.code`? Let's check how it maps keys: it uses `e.keyCode`. Let's debug in browser: dispatch event and check `window.__game.input.keyboard.manager.enabled`.

Let me run inspect with a JS eval... The browser tool has no eval. But I can add debug output into the page. Let's add a debug log of keyboard manager state to selftest.

Actually possibly the issue: the selftest started at 1200ms after load but the game canvas not yet focused — Phaser's KeyboardManager `startListeners` in manager does: `var e=this, i=this.manager, s=i.canvas, r=window&&window.focus&&i.game.config...` — it may add a focus listener and only start after window focus. Let me look at that codemore fully.

Phaser's KeyboardManager target defaults to window. The key event is dispatched to window — should work. But my synthetic events dispatched to window should be caught by KeyboardManager... unless the manager's target is set but listener attached with capture false on window. It should work. But the run-right test showed no movement at all. Hmm, maybe the issue is the KeyboardPlugin requires `game.events.on('ready')`? Actually keyboard plugin in scene starts listeners when enabled and scene active.

Wait — Phaser's `update` uses `this.input.keyboard.createCursorKeys()` etc. Maybe the issue: my synthetic events dispatched on window but Phaser's manager checks `e.defaultPrevented` and keyCode. Let me check `onKeyDown` implementation: it uses `e.keyCode`? Phaser 3.80 KeyboardPlugin.onKeyDown pushes to queue and `processKeyDown` uses `event.keyCode`. Hmm, I set keyCode in the constructor — but KeyboardEvent constructor with keyCode option is legacy and might be ignored (read-only derived). Actually in Chrome, `new KeyboardEvent('keydown', {keyCode: 39})` sets keyCode to 39? The spec says keyCode is derived from key, but Chrome historically honors the init dict for keyCode/charCode. Modern Chrome ignores it I think. So keyCode = 0.

Phaser 3.80 uses `event.keyCode` primarily? Let's check the code: search "keyCode" in min file.

Also, the real browser key press (browser tool "key" action) also did not move the player! Screenshot after ArrowRight showed player still at x=70. That means the real key events aren't reaching Phaser either. Possibly because the game canvas/window doesn't have focus, or because Phaser's keyboard plugin requires the scene's input plugin to have focus... Actually Phaser listens on window by default, so real keys should work. Unless the browser tool dispatches key events to the page but the game canvas isn't focused — window listener should still catch it.

Hmm, but maybe the browser's "key" action sends events to the focused element, and my page focus is on body — window still receives via bubbling. Should work.

Unless... Phaser config `input.keyboard` disabled? No.

Wait: Maybe Phaser 3.80's KeyboardPlugin needs `this.input.keyboard.enabled` and target; also `scene.input.keyboard` is only active when the scene is active — fine.

Another possibility: the events are captured but my update loop reads `this.cursors.left.isDown` — cursor keys rely on keyCode mapping. And JustDown(space) requires keyCode 32.

Let me debug in-browser: check window.__game.input.keyboard.enabled and whether listeners attached. Use browser inspect? The tool doesn't have eval. I can add debug output into the page itself (e.g., display a diagnostic element) — or write a small test page. Let's add temporary diagnostics in the page: after load, log window.addEventListener('keydown') receiving events, and Phaser's keyboard plugin state, into the selftest overlay.

Actually simpler: Phaser KeyboardPlugin uses `event.keyCode`? Let's grep min for "keyCode".

Phaser keyboard uses `event.keyCode`. The browser tool's key events likely set keyCode properly (real key press). But my earlier manual ArrowRight press didn't move the player either. Hmm — real keyboard events dispatched by the tool might go to the page but Phaser's target is `window` by default; the event target would be document/body. Phaser 3 keyboard plugin attaches to `window` (target null → window). Should work... unless the game canvas/window didn't have focus.

Also note: Phaser's `addKey` with `Phaser.Input.Keyboard.KeyCodes.SPACE` uses keyCode 32. Real key events give keyCode 32 for space.

But the manual test didn't move the player. Possibly the tool's key press sends keydown+keyup very fast (within one frame), so isDown never true at update time. Phaser's JustDown also processes the queue on keydown event -> sets isDown true for one update. Hmm, Phaser Key.onDown sets isDown=true and it's reset in update... Actually Phaser Key sets isDown=true on keydown and postUpdate sets isDown=false? Let's check: Key.onDown sets isDown = true; and in `postUpdate`? Phaser Key class has `onUp` sets isDown false. isDown remains true until keyup. Actually Phaser's Key: `this.isDown = true` in onDown; `this.isUp = true` in onUp. isDown stays true until keyup handler. Hmm but Phaser's `Key` update? There's `Key.onDown` sets isDown true and `_justDown`? Let's look at how Phaser 3.80 handles justDown: In Key class, `this.isDown=false; this._justDown=false; ... onDown: this.isDown=true; this._justDown=true;` and `update`? There's a `Key.prototype` no update. Phaser's KeyboardPlugin postUpdate sets `key.isDown = false`? Let's grep.

Anyway, for the manual press case the keydown and keyup both fired quickly, so isDown was true only briefly — if Phaser resets isDown each frame after processing, the game might miss. But my update reads `isDown` in scene update; if keydown and keyup happen between two frames, at the next frame isDown=false → no movement. That explains no movement.

For my synthetic test, same thing: I held for 1200ms with keydown/keyup — isDown should be true for that duration. Unless Phaser resets isDown per frame. Let's check Phaser Key: in 3.80, `Key.prototype.onDown` sets isDown = true, and there's `this.manager.queue` processing. The Key class has `isDown` and `isUp` flags reset in `Key.prototype`? Let me grep "isDown=!1".

Also the jump didn't happen with JustDown(space) which should work from a single keydown event (JustDown is based on _justDown flag reset each frame). Hmm, JustDown in Phaser 3.80: `JustDown(key)` returns `key._justDown`? Let's check: `function JustDown(key){return key.isDown && !key._justDown... }` Actually Phaser's implementation: 

```
var JustDown = function (key) { return (key._justDown); };
```
and _justDown is set in onDown and cleared in Key's `update`? The KeyboardPlugin's postUpdate resets? Let's grep.

Phaser's keyboard plugin uses `keyCode` from the event. Synthetic KeyboardEvent with keyCode in init dict — modern browsers ignore keyCode in init? Actually KeyboardEvent constructor accepts `keyCode` and `charCode` in the init dict for legacy support (Chrome supports it? Chrome deprecated but still supports keyCode in init dict for KeyboardEvent... actually Chrome does support `keyCode` and `charCode` legacy init properties). Let me check whether Phaser reads event.keyCode — yes it does (`o=n.keyCode`). Phaser 3.80 might use `event.keyCode` — but modern browsers also might not set keyCode on synthetic events. Chrome does honor init dict keyCode. But the issue: Phaser's target is `window` by default? KeyboardManager target default is window. But `this.input.keyboard` — is the plugin enabled? In the test I dispatched on window; Phaser attaches listeners to `window` (target null -> window). Should work.

But my earlier browser "key" press of ArrowRight also did nothing — the player didn't move. That suggests Phaser keyboard isn't receiving events at all, maybe because the canvas/window doesn't have focus? The browser tool dispatches key events to the page; window listener should get them.

Hmm — maybe the issue is Phaser's KeyboardManager only starts listeners when `this.enabled && this.target`. Let me check the keyboard plugin boot: it may be attached to the scene input plugin only when `input.keyboard` used? Actually scene.input.keyboard exists by default.

Wait, maybe the real problem: `this.cursors.left.isDown` — createCursorKeys uses keyCodes. But `this.keysA` addKey('A') uses string 'A' → 'A'.charCodeAt(0) = 65. Fine.

Perhaps the game canvas isn't focused and Phaser's KeyboardManager attaches to `window`... it should work with dispatched window events.

Let me debug: add a listener test in the page to log window keydown and check `sc.input.keyboard.manager.enabled` and whether the plugin's queue processes. Let me just run a quick check via browser inspect on console after pressing a key.

Actually possible cause: Phaser 3.80 keyboard plugin has `input.keyboard.enabled` true but there's the "capture" ... no.

Another possibility: The scene's `update` isn't running because... no, the player stands on the ground and the enemy moves? Let's check enemy movement in screenshots: the enemy did move (position differed between frames). So update runs.

So keyboard events not arriving. Maybe the browser tool's key press dispatches to the focused element, but Phaser listens on window — bubbling should reach window. Unless the tool uses CDP Input.dispatchKeyEvent which sends real key events to the page — those do reach window.

Unless... Phaser's keyboard manager checks `e.defaultPrevented` and the game? Not relevant.

Hmm, maybe Phaser's KeyboardManager target: in config `input.keyboard.target` default is `window`. But the scene input plugin: `this.input.keyboard` from scene systems - yes.

Wait — maybe the issue is `this.cursors` etc. created in create() before keyboard plugin ready? Unlikely.

Let me check whether keyboard events arrive at all: add window listener in page and log. Let's do a quick test by injecting via the browser? The browser tool has no eval. I'll add temporary debug code to index.html.

The inspect output earlier showed selftest logs. Let me wait a bit and inspect again to see console for [kb] and raw keydown logs.

Good progress: keyboard works now (keyCode needed). Player moved right, coin collected (1/58). Jump works (y went from 700 to 660 then 633 — still rising because the second press? Actually peak~660.6 measured at 250ms after jump; second press at that point did apply? midSecondPressY=633 which is higher (smaller y = higher). But the player was still rising from first jump — 250ms after jump with velocity -560 gravity 1750: at t=0.25, vy=-560+437=-123, still moving up. So y decreasing is expected from the first jump, not a second jump. My test is flawed. Need a proper check: verify only one jump by comparing velocity changes — better: check that after second press, vy doesn't jump to -560 again. Let's test by tracking min velocity.

Also, player y=700 = GROUND_Y, but sprite origin (0.5,1) so feet at 700 — good, but body.setSize(26,44) — the player appears to be standing on ground fine.

However the screenshot shows the player appears floating above ground? At y=700 with ground top at 700, feet at 700. The screenshot shows player feet at ~620 px screen, ground surface at ~700. Hmm, that's the earlier screenshot where player was at x=126 mid-jump? Actually the second screenshot shows player at screen y~570-620 while ground at 700. That's during jump (y=633). OK fine.

Wait — jump velocity -560 with gravity 1750: jump height = 560²/(2*1750) = 89.6 px. That's small-ish but ok. Gaps between platforms are 120px wide at ground level; horizontal speed 240 px/s; jump airtime up = 0.32s, total ~0.64s → distance ~153px. OK, 120px gaps are jumpable.

But player is running at 240 px/s and gaps of 120 px: fine.

Also camera didn't move because camera only starts following after deadzone... camX=0 at x=126 fine.

Let me improve the jump test to check velocity. Also need to test stomp, enemy, goal, restart.

Also concern: the enemy overlapping player -> in Mario you die on side contact. Our overlap check: stomping requires player.body.velocity.y>0 and (player.body.bottom - en.body.top) < 18. When player falls onto enemy, player.bottom vs enemy top: enemy origin bottom at ground y=680, height 26, so enemy top ~654. Player bottom when overlapping above... ok.

But there's a subtlety: after bouncing, player overlaps enemy again while ascending -> velocity.y<0 so no stomp, and would trigger lose! Because overlap callback runs while overlapping. Need a check: if player is above enemy and moving up, don't lose. Let me refine: only lose if player's body center is horizontally overlapping AND player's bottom is below enemy's mid. Better condition:

stomping = pl.body.velocity.y > 0 && pl.body.bottom <= en.body.top + 10.
lose = !stomping && pl.body.bottom > en.body.top (i.e., player is at/below enemy top).

Also after a stomp, disable enemy so no repeat.

Also `en.getData('stomp')` always undefined → message says "walker". Fine, but let's just use "walker".

Also enemies are created with physics.add.image inside a group created with `allowGravity: true` — fine.

Another issue: goalZone is a rectangle in the level; the player needs to reach x=5050 but ground segment last is [4400,5200] good.

Also the win trigger: physics.overlap with a non-physics group? goalZone has body, ok.

Let me also add: enemy collision with player physically? We don't add collider between player and enemies, so player passes through; overlap handles it. Good.

Now let's also handle: player falls into gap -> y > DEATH_Y lose. Level height 800 and camera bounds 800; death at 940 fine.

Now fix stomp logic and jump test, then run full test including reaching goal.

Also the "coins: 1/58" got collected during run — good.

Let's also verify restart resets camera scrollX to 0.

Another important thing: restart via scene.restart() recreates everything; camera scroll resets. Good.

Let me refine the code.

Wait — the overlap check with an enemy while jumping up through it: player bottom could be above enemy top and velocity.y<0 → not stomping, and pl.body.bottom > en.body.top false → no loss. Good.

But mid-air descending onto enemy: velocity.y>0 and bottom - en.top < 16 → stomp. OK.

However, another issue: player standing on ground beside enemy, body.bottom (700) > en.top → lose. Good.

But careful: overlap happens when player is above enemy (bottom < top) and falling — fine.

Now the double-jump test: my second Space press while airborne DID raise the player? y went from 660 to 633 — but that's just continuing the first jump's arc (player still rising? no, at 250ms after jump start with gravity 1750 and vel -560, apex at ~0.32s; at 250ms still rising). Actually the measurement was taken 250ms after jump; y0=700, peak~660.6 at 250ms; then second press at 250ms, and 120ms later y=633 — still rising due to the original velocity. So the test is inconclusive, not an actual double jump. Need better test: check velocity after second press.

Let me improve the test to check player velocity.y after second press: if double jump happened, vy would be reset to -560. Let me measure vy right before and after.

Also test stomp, goal, restart. Let me rewritethe selftest more thoroughly.

Also need to test side contact losing, and win at goal. Let me add: after restart, move player to flag to check win; and side contact check.

Also test camera following: run right long enough. Let me extend test.

Wait for the test to finish (~10s). Let me wait then inspect.

Also note: the enemy appears to be floating above ground? At x=645, y~675, ground top is 700. Enemy origin 0.5,1 at GROUND_Y-20 = 680, so bottom at 680, floating 20px. Let me fix: place enemy so bottom at GROUND_Y. Also player: origin 0.5,1 at GROUND_Y-30=670, but player bottom at 670 and it fell to y=700 presumably.

Let me fix enemy spawn y to GROUND_Y and let gravity settle. Actually the enemy is dynamic with gravity, so it will fall to the ground. The screenshot was taken at load though; it may still be settling. Fine.

Let me wait and inspect.

Issues found:
1. Restart didn't reset: after pressing R, player x=1232.7 — because R key press while... wait restart happened but position x=1232? Actually "after restart" logged x=1232.7 which is wrong; scene.restart() should reset to 70. But the log reads after 700ms; the player was at ~1232 because... hmm, actually the previous test had run right for 1500ms, player was far right. After R, x should be 70. It shows 1232.7 — so restart didn't reset player position. Why? scene.restart() on a scene — Phaser scene restart should recreate. But maybe 'R' key press happened and restart called, then... Actually wait, coins=2/58 after restart which is odd — coins was 1 before. Hmm, coins=2 means it collected another coin. So the scene did NOT restart (state play, coins=2). Possibly because scene.restart() is called but there's a delay; the log 700ms later shows old player? Actually player x=1232 same as where it was.

Hmm, maybe the problem: `this.scene.restart()` inside a scene method — `this.scene` refers to ScenePlugin; `this.scene.restart()` restarts THIS scene? In Phaser, `this.scene.restart()` restarts the scene via ScenePlugin.restart? Actually ScenePlugin has `restart(data)` which restarts the scene it's attached to — yes, ScenePlugin.restart() calls `this.manager.stop(this.key)`... let me check. In Phaser 3, `this.scene.restart()` restarts the calling scene. Hmm but the issue may be that Phaser's keyboard 'R' is being handled but restart happened and then... coins=2 vs 1.

Wait — order: before restart, the test ran hold ArrowRight 1500, coins after running = 1. Then stomp test (player teleported), then sideContact test: player teleported near enemy, state=play — side contact did NOT trigger lose! That's a bug (I set player position en2.x-40, en2.y-30, no velocity; overlap may not have occurred since 40px away? enemy width 30, player 26 → distance 40 means edges ~ 40-13-15=12 gap, no overlap. Then after 700ms player fell to ground. Actually then "after restart" x=1232.7 — hmm that's plausible position after... no.

Let me think: after sideContact, player at en2.x-40. Then R pressed → restart. Log 700ms later: x=1232.7, coins=2. If restart happened, x=70, coins=0. So restart didn't happen, and coins=2 means player collected a coin while teleported.

Why didn't restart happen? `Phaser.Input.Keyboard.JustDown(this.keysR)` is checked in update() only when state !== 'play'. But state is 'play'! I only check keysR when state !== 'play'. Bug! Restart via R only works when game over/win. Need to handle R during play too.

Also DOM Restart button calls restartHandler → scene.restart(). Need to verify that works.

2. Side contact test: didn't trigger. Need to check whether side collision actually causes lose. Let me make overlap logic more robust: instead of relying on overlap with the bottom check, use collider between player and enemies with a check: if player.body.velocity.y > 0 and player bottom near enemy top → stomp; else lose. Overlap approach: stomping requires (pl.body.bottom - en.body.top) < 16. When falling onto enemy from above, at the moment of overlap, player bottom is roughly at enemy top → small diff, good. Side contact: player bottom is way below enemy top → lose. But condition ordering: `else if (pl.body.bottom > en.body.top)` lose. Should work when overlapping sideways.

Problem in test: the enemy might have moved away. Let me redo test placing player directly on the enemy.

3. Also camera didn't move when player ran (camX=0 at x=126) — that's fine due to deadzone, camera followed later (camX 752 at playerX 1627).

4. "coins after running: 1" — coins stayed 1 while running right for 1500ms. Coin count went from 1 to 1; then 2 later. Hmm the run right from x=126 should collect coins along the ground. Coins are at GROUND_Y-40 = 660, player height 44 with origin bottom at ground 700, so player spans 656..700; coin at 660 with 16px → overlaps 652-668 vs player 656-700 → overlapping region 656-668 → should collide. But only 1 collected in a long run? Maybe the player jumped over? Actually the run happened while the jump test... no.

Wait, "coins after running: 1 (was 1)" — but the log said during that run coins went... The log line prints sc.coinsTaken after running = 1. Then stomp/position changes gave 2. Hmm coins are at every 120px along ground, so running from 126 to ~490 should collect several.

Maybe the physics.overlap with coins group isn't working because coins group children are physics images but group was created with config {allowGravity:false, immovable:true} — group config applies at creation via group.create; I add existing images via group.add, so their config isn't applied but I set them manually. Overlap should work regardless.

Actually possibly the issue: `this.coins.add(c)` on a group created with physics.add.group(config) - the group has createCallback config. Adding an existing game object is fine.

Hmm, but overlap detection: the player sprite body size set to (26,44) with setSize(...,true) — center true. Player origin 0.5,1. The body height 44 matches.

Let me instead check: is the coin's body actually colliding? coins have allowGravity false and immovable, body at position cx,cy. Fine.

Maybe the problem is the coin tween: I tween scaleX only now, fine.

Wait, maybe the coins ARE collected but the count display... no, coinsTaken increased to 2.

Alternatively: the run right happened but the player was in the air? No.

Let me debug by logging positions of coins near player. Perhaps the ground coins are at y=660 but the player's body bottom at 700 - body top = 700-44=656. Coin body at 660 (center) spans 652..668 → overlap with 656..700 → yes overlap.

Unless the player was moving and arcade overlap only checks once per frame — fine.

Hmm, but maybe the player stopped moving because the run of 1500ms reached the first gap (x=900)? From 126 at 240 px/s for 1.5 s = 360 px → x=486, within first segment. Coins along segment 0 start at x=130, 250, 370, 490... so should collect ~3.

Unless... coins in group aren't in physics world properly? Actually `this.physics.add.group(...)` then `.add(c)` — group.add adds to group but the child already has a body (created by physics.add.image) so it should be fine.

Hmm wait: I created coins via `this.physics.add.image(cx, cy, 'coin')` then `this.coins.add(c)`. physics.add.image adds to world. OK.

But the tween with scaleX on a physics image — fine.

Let me check that overlap callback is registered each update — yes I call physics.overlap in update() each frame, which adds a collider each time! Actually `physics.overlap` called every frame adds a new collider callback each frame → memory leak and duplicated callbacks. But in Phaser, physics.overlap in update is a common pattern? Actually typical usage is `this.physics.overlap(obj1,obj2,cb)` called once in create, but calling it in update re-adds. Phaser's collider has a unique id; repeated calls add duplicates → callback called multiple times per frame → coin disabled after first so count once (guarded by coin.active check). That's why coins increment once. But it also means leaks. Better to set up overlap in create and use flags. I'll move overlap calls to create().

But that doesn't explain missing coin pickups.

Let me test more directly in the selftest: log number of coins overlapping player region. Actually easier: log coin positions and player positions during run. Let me add a debug log listing coins near x 200-500 and check whether coin.active after run.

Possibility: the coins ARE being collected but coinsTaken resets? No.

Another possibility: the ground coin at x=130 etc — GROUND_SEGMENTS[0] = [0,900], loop from x+130=130 step 120 → 130,250,370,490,610,730,850. Player starts at 70 and after jump test moved to 126. Coin at 130 — collected (coins=1 ✓). Then run right 1500ms should reach ~486 collecting 250, 370 → coins should be 3. But it reported 1. So collisions after the first aren't happening!

Why? Because the overlap callback is registered multiple times... no. Because the group `this.coins` with `allowGravity: false` config: when group.create is used config applies; but I add manually. Hmm.

OR: Because duplicate overlap callbacks — the first registered callback may run for a stale gameObject? No.

Wait, maybe it's the overlap registration order: `this.physics.overlap(this.player, this.coins, cb)` — if called in update each frame, Phaser's ArcadePhysics.overlap creates a Collider with a unique objectId? It creates collider each time; the collider list grows huge (thousands), slowing the game! That could cause the frame rate to tank so player moves slowly and... but player did move.

Hmm, but performance: after ~5 seconds, hundreds of colliders, each scanning all children — could slow to a crawl. The player only moved from 126 to ~490 in 1.5s? That's 240px/s = expected. Actually 1.5s * 240 = 360. It reported coins still 1 but x after that... we only logged playerX later = 1627 after 2.5s hold (=600px) → 1627-1232 = ~395 in 2.5s → slow (158px/s). So yes, performance degraded due to collider accumulation. That also explains coins missed? No, coins are still passed over physically — overlap would still trigger.

Unless the frame rate is so low the player tunnels? Overlap isn't tunneling-sensitive.

Let me restructure: create overlaps once in create(), and in update check flags (coin flags). Use `this.physics.overlap` in create. That's cleaner and fixes perf.

Also for the enemies/coins the callback will be called each frame with proper arguments.

Let's restructure:
- In create: this.physics.overlap(this.player, this.coins, onCoin), this.physics.overlap(this.player, this.enemies, onEnemy), this.physics.overlap(this.player, this.goalZone, onGoal).

Also fix R restart during play.

Also add side-contact lose reliably: test will place player exactly on enemy.

Let me also reconsider enemy stomp detection with the new (pl.body.bottom - en.body.top) < 16 condition: enemy height 26, player falling; when overlap first detected, player bottom might be 30 below enemy top (fast fall) → then the else-if `pl.body.bottom > en.body.top` → lose! That's wrong: falling onto enemy from above but with high speed would trigger lose instead of stomp. Need better: stomp if player bottom <= enemy top + something AND player is moving downward AND player was above. Use: relative check pl.body.bottom <= en.body.top + 12 (i.e., player's feet are at or above the enemy's head). Use that as stomp condition: stomping = pl.body.velocity.y > 0 && pl.body.bottom <= en.body.top + 14.

Fast fall: player moves 1750*dt=29px/frame, so bottom could be 20px below enemy top in one frame → fails. Better to use the pre-overlap position, but simpler: make the stomp check based on player center vs enemy: stomp if pl.body.velocity.y>0 && pl.body.bottom <= en.body.top + 22. Side contact: player's bottom ~700, enemy top ~ 674 (enemy bottom at ground 700, height 26) → player bottom (700) > enemy top+22 (696) → lose ✓. Hmm 700 > 696 → lose, good but marginal. If player is jumping and passing by, bottom 660 < 696 → no lose (correct-ish).

Also enemies sit on ground with body height 26 (setSize(28,26)) and origin bottom → top = 700-26 = 674.

Player on ground: body bottom = 700 (feet at ground). Player body top = 656. When standing next to enemy, overlap happens only if x ranges overlap. Player bottom 700 > 674+22=696 → lose ✓ (barely). Let's use +18 → 692; 700>692 lose ✓. And stomping: falling from above, at the frame of overlap bottom might be up to enemy top + ~29 → need allowance ~30 for reliable stomp, which conflicts.

Better approach: track last frame's player bottom. Keep this.prevBottom updated each frame before physics? We can compute in update: store prevBottom at start of update (before physics steps? update runs after physics step? In Phaser, scene.update runs before physics step? Arcade physics world step is triggered in scene's update? Actually arcade physics update happens via scene events UPDATE which occurs... The physics world is stepped in the scene's 'update' step via the plugin's update? The ArcadePhysics plugin has an update method called on scene update event, order depends on plugin list order. Simpler: use overlapping detection but also allow stomp whenever player is above enemy top by comparing player center: stomp if pl.body.velocity.y > 0 && (pl.body.bottom - en.body.top) < 40 and player is not horizontally overlapping much? Hmm.

Alternative robust approach used commonly: separate collider check: in overlap handler, compute dY = en.body.top - pl.body.bottom (positive = player above enemy). Stomp if dY > -18 (player feet near or above enemy head, tolerance). Use tolerance based on the fact that player is 44 tall: player feet below enemy head by up to 30 in one frame.

Let's set tolerance 34 and side contact requires player feet to be more than 34 below enemy head. Standing on ground: player bottom 700, enemy head 674 → dY = -26 → within tolerance → would be counted as stomp! Bad.

Hmm, but standing on ground next to enemy, player and enemy both at ground, enemy head at 674 which is above ground. Player bottom is 700 which is 26 below enemy head — this is a genuine side/below contact. But a falling player landing on enemy's head would have bottom ≈ 674 (dY=0) at the ideal frame; in practice up to +29 overshoot.

Solution: record player's bottom from the previous frame (before the overlap). If prevBottom <= en.body.top + 6 → player was above the enemy's head → stomp. That's the classic check. Implement: keep this.prevPlayerBottom updated in update() after physics; but overlap callback runs during physics step, before update? Order: Phaser scene update → scene events 'update' → plugins update (physics world step). Arcade Physics world step happens in the physics plugin's update which is registered on scene 'update' event... Physics plugin's update is called during scene update? In Phaser 3, the ArcadePhysics plugin has an `update` method on the scene systems step, called after scene.update? Let me check order: Phaser Scene systems.step: this.events.emit(UPDATE) then this.events.emit(POST_UPDATE). Scene.update is called by systems.update before emit(UPDATE)? The plugin's update is bound to the scene's UPDATE event? For ArcadePhysics, `this.systems.events.on(SceneEvents.UPDATE, this.world.update, this)`? Hmm — ArcadePhysics plugin registers: `this.systems.events.on(SceneEvents.UPDATE, this.update, this)` where update calls world.update? Actually World.update is called from Physics world step via scene events 'update'.

Let's not over-engineer. Simpler robust trick: use a dedicated "enemy top" check in update() rather than relying on the overlap frame: iterate enemies; if player.body.velocity.y > 0 and player.body.bottom within [enemy.top - 10, enemy.top + 30] and x overlap → stomp. Because we evaluate each frame during descent, we catch the frame where the player crosses the enemy head while descending. Since we check every frame during the fall, the condition "bottom within band" will be true on some frame as the player descends through the band (band 40px tall, per-frame movement ≤29px). And side contact: player standing on ground next to enemy → bottom 700, band top = 674-10=664, band bottom = 674+30=704 → 700 falls within band! Bad again... but require player to be moving downward (velocity.y > 0)? Standing still, velocity.y=0 → no stomp. But a player walking off a ledge into an enemy... edge case fine.

Actually standing on the ground next to an enemy, if the player's bottom is 700 and the enemy top 674, the player is "inside" the enemy's vertical band but horizontally overlapping? Player is beside the enemy (not overlapping horizontally) — I'll require horizontal overlap of the bodies. If standing next to (touching), horizontal overlap may be zero/tiny.

Combine: stomp if (horizontal overlap > 0) && velocity.y > 0 && bottom in [top-12, top+30]. Side contact: else if horizontal overlap > 0 → lose (when player isn't above).

Let me define horizontal overlap amount ox = min(pl.right, en.right) - max(pl.left, en.left). If ox > 4 → they overlap horizontally.
- If player is above the enemy's head significantly: pl.body.bottom <= en.body.top + 6 → above → no action (passing over).
- Else if vertical overlap and ox > 4: if descending and pl.body.bottom > en.body.top - 12 (within band) → stomp; else lose.

Hmm, but descending player above head at bottom = 664 (top-10) → within band → stomp ✓. Descending player with bottom = 690 (deep inside) → within band (664..704) → stomp ✓ (good, they landed on top but overshot). Standing next to enemy with ox>4 (slight overlap) and bottom=700: band 664..704 includes 700 → stomp ✗ but player velocity.y=0 → require velocity.y>0 → no stomp; then fall to else → lose ✓.

Player walking into enemy side: velocity.y=0, ox>4, bottom 700 > top+6 → lose ✓.

Player jumping upward into enemy from below: bottom < top → no action ✓.

Player descending from above with ox>4: stomp ✓.

Edge: player descending past enemy with big horizontal speed (ox small but >4?) Could stomp incorrectly if player passes beside while falling and bottom in band. Acceptable.

So implement in update() manually rather than overlap, but I still need to know ox. I'll do the manual loop over enemies each frame (7 enemies, fine).

For coins and goal, use overlap set up once in create() (no per-frame registration). Coin counting: disable coin body so it can't be re-collected.

Let me now rewrite the update logic and create-time overlaps, fix R restart, and also fix coins perf.

Also check "coins after running: 1" mystery — maybe coins were collected but the display lag? coinsTaken is a number, no. With perf fixed, retest.

Also: enemy patrol code sets velocity each frame based on min/max; fine.

Let me rewrite relevantportions of the file.

Problems:
1. Restart with R key only worked when state != 'play' — in test state was 'play', so R did nothing. Actually the log said after restart x=1232.7 which is wrong; it didn't restart. Fix: check R at top of update always.
2. Overlap callbacks registered every frame via physics.overlap in update — that adds a new collider each frame! That's bad. Should use physics.add.overlap in create, or physics.overlap with removeCallback. Actually `this.physics.overlap` called repeatedly registers callbacks each time (it does create a collider each call). That's a perf issue and also explains duplicate. Use `this.physics.add.overlap` once in create.
3. Side contact didn't trigger lose: player was placed at en2.x-40, en2.y-30 → fell? Enemy y = 680; player at 650 with gravity falls to ground y=700 while enemy at 680... overlap maybe not triggered because player fell next to. Actually the player at x-40 falls to ground; enemy moves. Hmm, at 700ms the enemy may have moved. Let me instead test overlap more deterministically. Also the stomp check: when the player falls onto the enemy from above, pl.body.bottom - en.body.top: enemy top is at y-26 = 654; player bottom when standing on enemy = 654, so diff ~0 < 16 → stomp works (test showed enemyActive=false, vy=-430 ✓).

Side contact: player beside enemy at ground: player bottom = 700, enemy top = 654 → diff = 46 > 16, and `pl.body.bottom > en.body.top` → lose. But test showed state=play. Because player was placed 40px to left and both fell? enemy top 654, player at en2.y-30=650, x offset -40 so no overlap initially (widths 26 vs 28 → need |dx| < ~27). 40 apart, so no overlap. Then player falls to ground at x=en2.x-40; enemy moves at 70px/s → in 0.7s moves 49px, could approach. Hmm unclear. I'll make the test place player directly overlapping at same x.

Also enemy y is at GROUND_Y-20=680 with origin 0.5,1 → bottom at 680, but ground surface is 700. So enemies float 20px above ground. Fix: enemy y = GROUND_Y, and body size. Since origin bottom, set y = GROUND_Y so it sits on the ground.

Wait, but the enemy's body size 28x26 with origin (0.5,1): body top = y-26. With y=700 → top=674, bottom=700. Good.

Also player: origin (0.5,1) at GROUND_Y-30=670; falls to 700. Player bottom = 700. Fine.

Stomp condition: player falling onto enemy, at the frame of overlap player bottom near enemy top (674). But if player falls fast, bottom could be well past enemy top by the time overlap registers — with physics.overlap during collision, the player's bottom might be e.g. 690 (16 below top) or more. Use a more robust approach: check previous frame's player bottom vs enemy top, or use a "player above enemy" check: pl.body.bottom <= en.body.top + 8 && velocity.y>0. Better: record player's position before physics step. Simpler: in overlap, use `pl.body.velocity.y > 0 && (pl.body.bottom - en.body.top) < 20` plus also that the player's previous bottom was above enemy top. Let's track prevBottom each frame in update (before physics step? update runs before physics step? In Phaser, scene.update is called before physics step in the same tick? Actually the physics world step happens in scene's update pipeline: Scene update → physics world update happens on 'update' event? Phaser's ArcadePhysics world.update is called via scene events UPDATE which is emitted before scene.update? Let's avoid depending: store player bottom at end of each update as prevBottom. Overlap resolution happens during physics step which occurs... order: scene.sys.events PRE_UPDATE, UPDATE (scene.update called), then physics world update? In Phaser 3, ArcadePhysics plugin listens to scene's UPDATE event and calls world.update? Actually the physics world update is called on SceneEvents.UPDATE after scene.update? The ArcadePhysics plugin's update runs on 'update' event which is emitted after scene.update() call? In Phaser 3, `Systems.step` calls `this.events.emit(PRE_UPDATE)`, then `this.scene.update()`, then `this.events.emit(UPDATE)`, then `this.events.emit(POST_UPDATE)`. ArcadePhysics registers world.update on UPDATE event → after scene.update. So overlaps are detected after scene.update. So prevBottom from previous frame's update is fine.

So stomping test: pl.body.bottom was <= en.body.top + 6 in the previous frame AND velocity.y > 0. Simpler robust: stomping = velocity.y > 0 && (prevBottom <= en.body.top + 10).

Hmm but overlapping happens when bodies intersect; when the player lands on enemy top, prevBottom (last frame) is above the enemy top by some amount. Good.

Also need: side contact lose. Use: if not stomping and horizontal overlap exists → lose. Overlap callback fires when bodies overlap so horizontal overlap exists. But if the player passes above the enemy (jumping over), overlap might trigger a frame where the player is above; then prevBottom <= en.top → not stomping but player is above → should not lose. So condition for lose: player's bottom is below enemy top + 6 (i.e., player's feet are at/below enemy's top → hit side/below). And if the player is above → ignore.

Let's implement: 
- prevBottom tracked.
- if (pl.body.bottom <= en.body.top) → player entirely above enemy (feet above head) → ignore (passing over).
- else if velocity.y > 0 && prevBottom <= en.body.top + 6 → stomp.
- else → lose.

But player jumping over an enemy: at some frame, feet may dip below enemy top while still rising? If rising, prevBottom would be > top → lose incorrectly. Hmm, if rising and feet below enemy top, they hit the side → lose is correct actually (rising into enemy side). If rising and feet above enemy top, ignore → fine.

Actually while jumping over an enemy, feet above enemy top for the whole crossing → ignored. Good.

Let me also make the enemy taller/flush.

Also, ground: enemy at GROUND_Y so body bottom = 700 exactly.

4. Coins: player collects coin at start? After restart test showed coins=2/58 — because a coin was near start overlapping the player? coins at x+130 step 120 starting 130 for segment [0,900] → 130,250,... Player at 70, no. But floating platform coins at 380+40=420... The "coins=2" was because the player had run and picked one up before restart — but restart should reset! Log said "after restart: coins=2/58" — since restart didn't happen (R ignored while playing). Right.

But also earlier "coins after running: 1 (was 1)" — running right for 1500ms should collect several coins. Hmm player ran right and coins stayed 1? The player was at x=126 after first run and coin at 130 collected (coins=1). Then after jumping, running right for 1.5s → should pass coins at 250, 370... but coins stayed 1. That's the overlap-registered-every-frame problem? Actually each frame adding a new overlap callback means many callbacks, each firing → coins should be collected MORE. But once coin disabled, coin.active false... disableBody(true,true) sets active false so callbacks skip. Hmm, coins count stayed 1 though. Maybe because overlapping each frame creates ever-growing colliders slowing down massively (game freezes) → player barely moved. The player x after "run right 1500ms" — we didn't log x there. camX after restart=448 with x=1232 — hmm.

Actually a big issue: calling this.physics.overlap every frame adds colliders each frame → performance death. Fix by using this.physics.add.overlap in create().

Let me restructure: create overlap handlers once in create, with state checks inside.

5. Restart: implement a proper restart that resets everything: scene.restart() does recreate everything — coins reset, enemies reset, camera reset. The camera scroll resets with scene restart? The camera is recreated too. Yes.

Also the DOM "Restart" button should work.

6. R key should restart during play too.

Let me now rewrite the update/create portions.

Let me quickly reload and verify, then remove the selftest harness (or keep it disabled). Need to be fast.

Note: prevBottom update order — I set prevBottom = p.body.bottom at start of update, but overlap happens during physics step which occurs before scene update? In Phaser, physics world step happens in scene update phase order: scene.update is called, then physics world update? Actually arcade physics world updates during scene's UPDATE event which occurs before scene.update() callback? Phaser: Scene.update is called by systems.step which emits PRE_UPDATE, then calls scene.update(), then emits UPDATE (where physics world steps?). Actually ArcadePhysics World.update is hooked on scene 'update' event... The physics world step occurs in Scene's 'update' event emit which happens after scene.update() is called. Hmm, order in Phaser 3: Systems.step: emit PRE_UPDATE, this.scene.update(time,delta), emit UPDATE, emit POST_UPDATE. ArcadePhysics registers world.update on scene UPDATE event → so physics steps after scene.update(). So prevBottom captured in update() is from previous frame's post-physics position. That's actually what we want (bottom before the physics step). Good.

Also stomp detection: player falling onto enemy: at overlap time, feet slightly below head; prevBottom from prior frame was above head → stomping true. Good.

Let me reloadand check.

Enemies now sit on the ground. Let me wait for the selftest results.

Note: the "restart" test earlier showed x=1232 after restart, meaning R restart didn't work (state was play, and the old code only handled R when state !== play). Now R is handled always. But note scene.restart() recreates; that's fine.

Also note the coins count reset: "coins=2/58" earlier — because coins collected from earlier state persisted? No—scene.restart recreates coins. Earlier R didn't work during play so state persisted.

Wait for selftest output.

Restart now works (x=70, camX=0, coins 0/58, 7 enemies). Side contact test still shows state=play — because test teleports the player next to the enemy but the enemy may have moved away, or the player landed on the ground beside the enemy without overlapping. The test placed player at en2.x-40, en2.y-30 — enemies patrol, so by the time of check it may have moved. Actually the player would fall to ground and might be beside the enemy without overlapping (no overlap → no lose). That's plausible and not necessarily a bug.

Let me do a targeted quick test: place player exactly overlapping enemy from side and check. But time is limited (~4 min). Let me instead just make the side-contact detection more robust: in onEnemyOverlap, the "feet <= head" case returns ignoring — that's when player is above enemy which is fine. But overlap happens when bodies intersect; player standing on ground next to enemy with horizontal overlap → feet (700) > head (~674) → lose. Good.

Also camera follow: camX stayed 0 at playerX=522 because deadzone 240 wide. Fine — later camX=752. OK.

One issue: "coins after running: 1 (was 1)" — running right for 1500ms should collect more coins. Player ran from x=130 to ~490, and coins are at ground y=660 spaced 120 apart starting x=130 for first segment... but coins on ground are at GROUND_Y-40=660, player top at 700-44=656. Player body height 44 so from 656 to 700. Coin at 660 with 16px height (652-668) → overlaps 656-668. Yes should collect. But the player was still in the air/on a platform? Hmm, at the moment of the test the player had jumped onto a floating platform maybe. Actually the test after jump: player landed y=624.7 (on a floating platform at y=610 top → player bottom 624). Then running right for 1500ms while falling. It may have been on the platform. Coins on ground at 660 would need the player to reach the ground.

Actually wait — after landing at y=624.7 the player was on floating platform at 610 (top). Player then ran right and fell to ground at 700. Then coins should be collected as it runs. The result 1 suggests coin overlap isn't firing much. Hmm, but coin overlap fired once at start (coins=1 after running right first time). Possibly the coins overlap works but coins are sparse.

Hmm, in the first run right (1200ms) player moved 70→130, only 60px?? That's slow. velocity 240px/s over 1.2s should be ~290px. It only moved 60px. That suggests the game is running slowly — maybe the frame rate is low (headless). Or the player is stuck against something. Hmm, at start the player at x=70 y=700 standing on ground. Moving right 60px in 1.2s = 50px/s. Way slow.

Possibly the headless browser throttles requestAnimationFrame? But stomp test etc. worked. Actually maybe the game's delta is small because the browser is backgrounded... The camera follow test: 2500ms → x=522 from 70 = 452px in 2.5s = 180px/s, closer but still slow-ish. First run had jump in between? No, first run was before jump.

Hmm, maybe the first 1.2s includes startup lag. Anyway.

Coin count: after the second run the count remained 1 — suspicious. But then the game won with 4 coins. Let me check: after restart coins=0/58 and enemies=7. Good.

Given remaining time, I should do one focused check on coins while running and on side-contact, then remove the selftest harness and finalize. Let's write a quick targeted selftest modification: run right 3000ms and log coins collected and player x; and place player exactly at enemy x (side, standing on ground) and check state.

Also: the win overlay said "4 of 58 coins" — coins were collected during the run so overlap works.

Let me modify the selftest to be a focused test, run it once, then delete the harness.

Time: ~4 min left. Bequick.

Note: the running player seems slow — after holding right for 1200ms only moved 60px in the earlier test. That's very slow. Because the browser may throttle rAF? Actually x went from 70 to 130 in 1200ms = 60px, but speed is 240px/s so should be ~290px. Hmm, maybe the game loop runs slowly in headless. Possibly the frame rate is low. Not a big deal but let's check delta. Actually Phaser with `physics` may be running at low FPS in the test browser. Earlier "camera follow: playerX=522" after 2500ms of holding → 452px in 2.5s = 180px/s, closer. So it's fine-ish (some throttling). But the first 1200ms measurement gave only 60px — maybe the first hold began before game was fully ready.

Anyway.Let's wait for the test results.

Side contact now → lose ✓. Stomp this time didn't trigger (enemyActive=true, playerVy=450 — player fell past/on enemy but not stomped). Likely the player was placed 90px above enemy but the enemy moved; the player landed beside the enemy and the overlap detection classified as not-stomp, but state stayed play... hmm, actually if player fell next to it, overlap would trigger "feet > head" → lose. State is play and enemy still active, so no overlap registered — the player landed on the ground at a different x than the enemy.

The stomp logic: prevBottom <= head+8 and velocity.y>0. When falling fast (vy up to ~700), in one frame the player can move ~12px; so at overlap frame, feet might already be 12px below head, prevBottom was above head → stomp works. But if the frame gap is larger, prevBottom might be below head+8 → not stomping → treated as side contact → lose. But state stayed play, so overlap didn't even happen (enemy moved away).

To make stomp robust, use a wider tolerance: stomping = velocity.y > 0 && (pl.body.bottom - head) < 30 && pl.body.prev.y <= head + 12. Or simpler and robust: use Phaser's body.prev (position before physics step) — `pl.body.prev.y` is the y before the step; with origin bottom, bottom before step = prev.y + height... Actually body.prev.y is the top-left-ish y (body position is top-left in arcade? body.position is top-left of body). For a sprite with origin (0.5,1), body.position.y corresponds to the bottom.

Let me just widen tolerance: stomping if velocity.y>0 && (pl.body.bottom - head) < 34. Standing next to enemy: player bottom = 700, enemy head = 674 (enemy height 26 at y=700) → difference 26 < 34 → would stomp instead of lose! Bad.

Alternative: use the player's center vs enemy's center: stomp if the player's feet were above the enemy's mid at some point. Use approach: keep track of previous frames' player bottom (this.prevBottom) but with tolerance on prevBottom <= head + 8 (that was tested and passed in run 1: stomp worked, enemyActive=false).

The failing case was probably that the enemy walked away. Let me re-test the stomp with the enemy velocity zeroed and player directly above it. Quick change to the test only (not the game). Time is nearly out (~4 min). Let me do one final test edit: zero enemy velocity before stomp test.

Also I should remove the selftest harness from the final file. Plan: do the stomp retest with the harness, then delete the harness.

Actually to save time: make the stomp more robust in-game using a small tolerance plus a check that the player was above the enemy recently: track this.lastSafeBottom? Simplest robust approach: in onEnemyOverlap, compute stomping = velocity.y > 0 && (this.prevBottom <= head + 10) — where prevBottom is from the previous frame. If the enemy moved away, no overlap at all → the player just walks past. That's fine behavior-wise (the enemy moving is part of the game), but the test placed the player 90px above the enemy at an x that the enemy then left.

Better: make the stomp check based on relative vertical motion: stomping = velocity.y > 0 && (pl.body.bottom - head) < 40 && (pl.body.bottom - head) < (en.body.top - this.prevPlayerBottom)... hmm.

Let me use a simpler and standard approach: overlap handler with stomping determined by the enemy's own view: the player is stomping if the player's feet are above the enemy's center line (en.body.top + en.body.height*0.5) and the player is falling. For a 26px tall enemy, center = 674+13 = 687. Player bottom at 700 (standing on ground) > 687 → side contact → lose ✓. Player falling from above: at overlap, player bottom is around head ± up to ~25px → typically 674..699. Hmm, borderline.

Improve robustness: use a "recently above" memory: keep this.wasAboveEnemy flag. In the overlap, if pl.body.bottom <= head + 2 → set this.playerAbove = true (ignore). When feet > head, if playerAbove → stomp else lose. But the player falling fast may skip the "above" frame entirely.

Best robust: check the player's vertical velocity & position relative to enemy's top using body.prev: `pl.body.prev.y` holds the position before the physics step. With origin (0.5,1) and body size set (26,44,true) the body position y corresponds to the sprite bottom? For an Arcade body, `body.position` is top-left of the body in world space, but with custom size and center=true, the offset is adjusted. body.prev.y is the previous body position.y (top-left of body). Player bottom = body.y + body.height... but for the player, body.height = 44 and body.y is the body top.

Let me compute: feet_before = pl.body.prev.y + pl.body.height. If feet_before <= head + 6 → stomp. This is equivalent to prevBottom but with per-body precision (no need to sample in update). Actually my prevBottom sampled in update() happens before physics step of that frame? Order: scene.update() runs, then physics world update? In Phaser, physics world update runs during the scene's UPDATE event which is after scene.update() method? Actually scene.update() is called by the scene's systems step, and the arcade world steps on the same 'update' event... The physics plugin updates in the scene's UPDATE event handler, which fires after scene.update()? In Phaser 3, Systems.step: emits PRE_UPDATE, then scene.update(time,delta) via 'update' event... The physics world update is bound to SceneEvents.UPDATE which is emitted after scene.update() is called? Hmm: Systems.step → this.events.emit(UPDATE) happens in step after calling scene.update? Let me recall: Systems.step(time, delta) { this.events.emit(PRE_UPDATE); this.events.emit(UPDATE); this.events.emit(POST_UPDATE); } and SceneManager updates scene by calling scene.sys.step, and the scene's own update() is called via 'update' event listener registered by SceneManager (this.scene.update called in Scene's update? ) Actually SceneManager calls scene.update(time,delta) inside sys.step? In Phaser 3, `SceneManager.update` → `scene.sys.step(time,delta)`; and `Systems.step` emits UPDATE, and the scene's update method is bound to the UPDATE event via `this.events.on(SceneEvents.UPDATE, this.update, this)` in Scene constructor. The physics world update is also on SceneEvents.UPDATE via ArcadePhysics plugin registered... The order of listeners: the scene's own update listener is registered first (in constructor), then plugins' (physics) → so scene.update() runs before physics step. Good: prevBottom sampled in update() is the pre-step bottom, consistent with body.prev.

So the tolerance issue: with 60fps and vy up to ~700px/s → 11.6px per frame. prevBottom would be up to 11.6px above current bottom. head+8 tolerance covers ~ most cases. Fine.

So the failing test was likely enemy movement. Let me quickly adjust the test to freeze the enemy, and also make the game a bit more forgiving: increase tolerance to head + 14 (still fine since side contact when standing: player bottom 700 vs enemy top 674 → 26 > 14 → lose ✓).

Do it now: edit test + tolerance, reload, check, then remove harness.

Note: `prevBottom` is updated at the start of update() to the bottom at that time (before physics step of this frame). Actually update() runs before physics step in Phaser? Phaser's scene update runs, then physics world updates (arcade physics updates on scene's update step via 'update' event of physics plugin which is called after scene.update? Actually physics world step happens in the scene's UPDATE event which occurs after scene.update() method). So prevBottom is the previous frame's bottom position. For a falling player onto an enemy: at overlap detection time, the player has descended; prevBottom from previous frame may be above enemy head. That works.

But prevBottom at frame N is captured at start of update (position after frame N-1 physics). Good.

However, prevBottom is only updated when state === 'play' — fine.

Edge: enemy collision while player is standing on the same ground — player bottom equals ground 700, enemy top = 700-26=674. feet(700) > head(674) → not stomping (velocity.y ≈ 0 or small) → lose. Good.

Letme reload and check stomp.

Stomp now works (enemyActive=false). "at flag: state=lose" — the player teleported to x=5050 but there is an enemy at 4700-5180 that ran into him before reaching the flag. That's expected game behavior, not a bug. But the flag is inside an enemy patrol range — better to move the flag beyond the last enemy, e.g., enemy range 4500-4960 and flag at 5100. Let me shrink the last enemy range so the flag area is safe.

Time is nearly up. Let me make that small fix, remove the selftest harness (or keep it gated behind ?selftest=1 — but I set it to always true). I should disable it but keep the code gated. Let's do both edits now.

The selftest trigger line: I changed `if (true)` earlier? grep shows no "selftest=1" in the trigger... let me check line ~530.

Also level width 5200 vs flag 5090 fine. Also last ground segment [4400,800] ends at 5200. Good.

Now verify final with the selftest disabled - just do a plain reload and manual checks. Also test that the Restart button in DOM works (scene.restart()). The R key path uses this.scene.restart() which re-runs create — confirmed working (x=70, camX=0, coins 0/58, enemies 7).

One issue: `this.ui.onRestart(() => this.restart())` is registered in create each time; scene.restart() re-creates scene, and ui.onRestart overwrites handler - fine.

Another: after scene restart, the DOM status panel was cleared. Good.

Also the coin counter: `ui.setCoins(0, this.coinTotal)` in create. Good.

Let me also double check the level is completable: gaps of 120px width between ground segments, player speed 240px/s, jump height with velocity -560 and gravity 1750: time up = 560/1750 = 0.32s, total air ~0.64s, horizontal distance ~153px. Gap 120px → jumpable but tight-ish. Player width 26; to clear a 120px gap you need to travel 120+ ~ ok with 153 max at full speed, but must jump at the edge. Slightly tight. Let me increase jump to -620 → airtime 0.708s → 170px. Better. Also reduce gravity a bit? Keep gravity 1750 and velocity -600 → 0.686s → 164px. I'll set -600.

Also floating platforms at y=600/610, ground top at 700 — jump height 100px with -600: h = v²/2g = 360000/3500 = 103px. Platform at 610 means 90px above ground — reachable. Good.

Let me set jump to -600 and confirm.

Also check that the player doesn't get stuck at the level's start on the first platform. Fine.

Let me quickly make the jump change and do a final reload with manual key presses to confirm run/jump still works (using browser tool key action which dispatches real key events on window — earlier they didn't work because keyCode missing? Actually the browser tool key press did nothing earlier; the raw dispatched events worked. Real user key presses in a real browser do include keyCode, so fine. The browser tool's key action likely uses CDP Input.dispatchKeyEvent which sets keyCode properly... but earlier the player didn't move. Hmm, that's concerning: maybe CDP key events weren't reaching window because focus was elsewhere. Whatever — CDP events with proper keyCode will work; our synthetic test proves the Phaser key handling works with keyCode set.

Actually to be safe, Phaser 3.80 uses event.keyCode. CDP dispatchKeyEvent does populate keyCode. Earlier failure was probably focus (body not focused) — the tool's key action might dispatch to the focused element. Not worth more time.

Let me finalize.

Also verify LEVEL_W covers flag at 5090 (LEVEL_W 5200 ok). Camera follow: camX was 0 at playerX 670 — deadzone 240 means camera only moves when player is beyond deadzone center. Camera width 1200, deadzone 240 → camera starts scrolling when player x > 1200-... Actually the follow uses deadzone; camX 0 at player 670 is fine.

Wait, but in the earlier test "camera follow: playerX=614, camX=0". Camera would scroll at player ~ 1200. That's fine but verification wants camera following. Let me quickly verify with a run to x>1500. Actually the prior run reached playerX=1627 camX=752. Good — camera follows.

Now let's reload and do a final manual check with real key presses via browser tool, and verify DOM restart button works.

Also the game currently starts the selftest only with ?selftest=1. Good.

One more: `this.ui.onRestart` is registered each create; scene.restart() re-creates, re-registering handler — fine since it's a single global.

Also on restart, the DOM status panel might remain visible? ui.setStatus(null) called in restart(). Good.

Let me reload and test with real browser key presses (the browser tool's key action sends keydown/keyup - earlier the game didn't respond to it, but that's the tool; real users are fine. Actually the tool's key press sends keyCode too? The earlier presses didn't move the player at all. Hmm — that could indicate the real-browser keyboard path fails, which matters! The browser tool presses a real key; Phaser didn't respond. But my synthetic events with keyCode worked. Phaser 3.80 uses event.keyCode. A real browser keydown has keyCode set properly (it's deprecated but still present). The tool's key press may have targeted the canvas but with keyCode=0? Possibly CDP rawKeyDown sets keyCode properly though.

Let me test with the browser tool key action now after reload and observe if the player moves. But the player movement requires holding the key; tool sends keydown+keyup quickly. Phaser would still register a keydown for one frame → isDown true briefly. Earlier screenshot after ArrowRight showed the player unchanged (x=70). Hmm, the screenshot was maybe taken after keyup and 1 frame; player velocity decays? Actually velocity stays 240 until next update sets it to 0. Player would have moved ~4px in one frame. Hard to see.

Better: check via a JS probe. Let me add a temporary hook: window.__probe = () => player.x. Then use browser inspect? The inspect tool returns DOM/console only. I can log player.x periodically to console... Actually simpler: after a real key press, take a screenshot and check HUD? No HUD x.

Alternative: log key events from window into the DOM overlay that inspect can read. Let me add a temporary window keydown logger that appends to a DOM element, then press a real key via the tool and inspect.

Time is nearly up (5 min limit, ~13 min elapsed?). The instruction said 10 min elapsed, at most 5 min remain. I've used more. Let me do one quick check of real key events and then finalize.

Quick approach: add window.addEventListener('keydown', e => { document.title = 'kd:'+e.keyCode; }) in the page temporarily... but inspect returns DOM text, not title. Instead write to a DOM element and inspect DOM.

Let's do it fast.

Now test that real keyboard (via browser tool key action) works. Let me press ArrowRight a few times and check probe.

Note the browser "key" action earlier did nothing because the player did not respond to keys — earlier test showed x=70 unchanged. But the injected keydown events worked. That may be because Phaser's keyboard manager listens on `window` and the browser tool's key action might target the canvas... Actually window keydown should bubble. Hmm, earlier the game's own keyboard didn't respond to browser-tool key presses. The injected events with keyCode worked. So browser-tool key events likely lacked keyCode (Phaser 3.80 uses event.keyCode). Real browsers always provide keyCode, so real users are fine. But my injected probe confirms code path.

Let me test with browser key action and check the probe shows keyCode.

The key press is received (keyCode=39), but the player doesn't move — because keydown/keyup happen between frames (Phaser reads isDown at frame time). That's a harness artifact, not a real bug. Real browsers keep the key down while held. The selftest with held keys confirmed movement works.

Also note the game only responds while the canvas has focus? Phaser's keyboard manager listens on window by default, so fine.

One concern: the browser tool's key events might not have been "held", so no movement visible. That's fine.

However, I should verify the game works when the canvas isn't focused — Phaser default target is window, ok.

Let me remove the probe/test harness code (keep the selftest function gated but remove the probe). Actually keep it minimal: remove the probe block and keep selftest gated on ?selftest=1 (harmless). Actually simpler: remove the whole test harness to keep the file clean. But it's useful evidence... I'll remove the probe listener but keep the gated selftest.

Also the flag: player must reach x=5090; level width 5200, camera bounds LEVEL_W=5200. Goal flag at 5090. Fine.

Also I should double-check the "camera position returns" on restart — verified camX=0 after restart.

One more: the DOM Restart button. Let me test it via clicking the Restart button after triggering game over. Quick check: force lose state then click. Time is nearly up (~1 min). Let me do a fast final: remove probe, reload, and simulate a lose + click restart via browser click at the button coordinates.

Let me first make the lose happen quickly: use the ?selftest path? No time. Alternative: click button coordinates when the status panel is shown. I can trigger it by evaluating... no console eval tool available besides browser action. Hmm, browser tool has click and inspect only.

I could add a temporary URL param to force-lose. Let's do: in load, if location.search has 'lose=1', setTimeout(() => scene.lose('test'), 1500). Then reload with ?lose=1 and click the Restart button, and inspect DOM to verify player reset.

Is there a way to navigate to a URL? Browser tool reload only reloads current URL. I can set location.search via a link? Instead, use the existing selftest harness: ?selftest=1 runs after reload only if URL has it — reload keeps the same URL, so I can't add params.

Alternative: use a hash-based trigger instead of query. Change condition to check location.hash too, and set hash via... still can't navigate.

Simpler: keep the always-on approach but make the harness do the lose+button-click test, then remove it. Time is very tight (~1 min). The R-key restart is already verified, and the button calls the same restart() path. I'll accept that.

Final step: remove the probe listener and the __probe function, reload to confirm no console errors.