Mario-style platformer · claude-haiku-5.5

I should move efficiently here, so I'll start by checking the directory.

I'm planning the game structure using Phaser's Arcade physics, deciding on a 960x540 canvas with a wider scrolling world around 3600px to give room for the level layout.

Ground segments need gaps built from static texture rectangles, and the player sprite needs careful jump logic so jumping only triggers when touching the ground. Enemies should patrol with simple velocity bounds, with stomp-kill detection based on the player's falling velocity and relative position, while coins and the goal flag use overlap triggers, falling off the world triggers a loss, and the camera follows the player with bounds set to the world size. For restarting, I'll just reset the scene and counters via init rather than manually reconstructing every object.

I'm also planning both a key-based (R) and DOM button restart, exposing the game instance globally for testing. Now I'm laying out the actual level geometry -- ground segments with specific x positions and widths, calculating the resulting gap sizes between platforms, and checking that the player's jump arc (based on jump velocity and gravity) can actually clear a 120-unit gap.

Next I'm placing floating platforms at various x/y coordinates and sizes across the level, then designing enemy patrol behavior that reverses direction when hitting platform edges, plus scattering coins and setting a goal flag near the end. Finally I'm sketching the visual style -- a sky background with clouds and hills, Mario-style player sprite, Goomba-like enemies, and gold coins.

For the background I'll make the sky fixed with scrollFactor 0 and clouds slightly parallaxed at 0.5, generating brick and other textures procedurally with graphics objects turned into textures. I'm also planning win/lose overlays with restart options, and figuring out how to give tile sprite platforms static physics bodies for the ground.

I'm placing the player near the ground start position with the camera following and bounded to the level, adding an in-canvas HUD for coin counts, and exposing a debug hook for testing state like position and coin counts. For enemy stomping, I'm detecting a stomp by checking the player's downward velocity and vertical overlap with the enemy's top edge, destroying coins on overlap with a guard flag to prevent double counting.

Killing an enemy disables its body and plays a squash tween before removal, while enemies also collide with the ground via a standard collider. Reaching the goal sets a "won" state, and I'm wiring up a restart mechanism through both a DOM button and an R key that calls scene.restart().

Since restart re-runs create(), coins and state reset naturally as long as I initialize those variables there. For input, I'm setting up cursor keys plus A/D/Space, making sure Space doesn't trigger scrolling or accidentally click the restart button by giving the button tabindex -1. Jumping checks for a just-pressed Space while the player is touching the ground, and horizontal movement is a simple left/right velocity toggle with sprite flipping. Now I'm writing the enemy patrol logic that flips direction when an enemy reaches its min/max boundary.

Still working out level layout...

I'm finalizing ground segments with four gaps totaling the course, then checking floating platform placements for jump feasibility — making sure vertical gaps between platforms stay within the player's jump height so each one is actually reachable from the last.

Now I'm placing patrolling enemies along each ground segment, spacing them so they roam within safe bounds between platform gaps rather than wandering off edges.

For coins, I'll scatter them along the ground and above each platform at regular intervals, totaling around 50 coins across the level. Then I'm placing the goal flag near the end at x=3120, with a pole running from the ground up to near the top of the screen.

For the goal, I'll use a static physics body sized to the pole-and-flag texture so the player triggers an overlap when touching it. On win, I'll freeze player movement and show a victory message; on loss (falling off-screen or hitting an enemy), I'll pause physics, tint the player red, and display a "Game Over" overlay with a restart prompt. The camera will follow the player smoothly with lerp and stay bounded to the level dimensions.

For visuals, I'm layering parallax clouds and hills with different scroll factors against a fixed-position sky background, and generating all sprite textures procedurally with Graphics calls -- a simple pixel-art player, mushroom-style enemy, brick and ground tiles with a grass strip on top, and spinning gold coins.

For physics setup, I'm structuring coins as a static group so collected coins destroy cleanly, enemies as a dynamic group with velocity-based patrol movement, and ground/platform segments as static groups using stretched or tiled textures sized to fit, then setting up colliders between the player and these groups.

The goal flag uses an overlap check to trigger the win condition, I'm adding a HUD with fixed-position text and a restart mechanism via scene.restart() triggered by either a key press or a DOM button, keeping in mind that restarting resets scene state including the camera.

For input, I'm setting up keyboard capture on space and arrow keys to prevent default browser scrolling, and defining jump logic that only fires on a fresh press while grounded to avoid mid-air double jumps. For stomp detection, I'm comparing the player's previous bottom position against the enemy's top to determine if the player landed on top versus hit from the side, triggering a bounce and enemy removal for stomps or a loss condition for side collisions.

I'm working out sprite positioning so the player and enemies sit correctly on the ground and platforms given their body sizes and center-origin coordinates, and adding a loss condition if the player falls through a gap below the ground level. I'm also setting up coin collection with a guard against double-counting and a counter display showing coins collected out of the total, then writing everything to the file.

I'm double-checking the physics setup — static body sizing for the ground tiles, the goal flag's refreshBody call, and the restart key binding all look fine. The stomp detection using the previous frame's body position against the enemy's hitbox also checks out correctly.

The sky background with scrollFactor 0 and the game-over logic disabling the player's body both seem solid. Since scene.restart resets everything including the camera, this should all work as expected — time to test it in the browser.

The game is rendering, and I see a total of 74 coins in the level. Now I want to test movement by holding right and jumping, but checking debug state is tricky since the browser tool doesn't easily support holding keys—I'll try the key action with "ArrowRight" and see if I can inspect the resulting state.

The HUD already shows coins and state, which should be enough for debugging rather than adding extra DOM elements. I'm also double-checking the restart key binding and stomp detection logic look correct, so I'll go ahead and test by pressing "d" and taking a screenshot.

The screenshots suggest the player isn't moving much since the key press is just a tap rather than a held action, so continuous movement isn't really being tested. The camera also doesn't appear to be scrolling, and I'm limited in verifying JS state directly since inspection doesn't return actual values.

Checking through the other mechanics mentally: the restart button, R key handler, stomp collision via body.prev, enemy patrol velocities, and the static physics body on the tile-sprite ground all look logically sound based on the code structure. Given my limited ability to simulate held keys or verify runtime values, I think the honest approach is to report what I could confirm — loading, rendering, enemy patrol, and HUD — while being upfront that holding movement, jump landing, camera follow, coin pickup, and restart couldn't be fully verified through the tools available.