Build Bitstream Bluffs game from documentation #14
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Rebuilt the entire game from scratch with a clean, focused architecture following the design specifications in instructions.html and DESIGN-DOC.md. Core Features: - 480×270 pixel-perfect resolution with proper scaling - Dual-mode player system (Sled/Walking with TAB toggle) - Full trick system: Rotation, Air Brake, Parachute - Combo multiplier system (1.0x + 0.25x per unique trick) - Procedural terrain generation with seed support - Three terrain types with different physics (Blue/Green/Magenta) - Distance-based and trick-based scoring - "The Bit Stream" chasing mechanic with visual effects Visual & Effects: - 1-bit Tron wireframe aesthetic with neon colors - Parallax starfield background - Periodic glitch VFX (RGB split, scanlines, screen shake) - Particle effects for tricks and bit stream - Smooth camera following with offset Technical Architecture: - Clean src/ structure with logical separation - Core systems: Player, TerrainGenerator, TrickSystem, ScoringSystem - Visual effects: Starfield, GlitchFX - Utilities: Seed generation and seeded random - Matter.js physics with ~900 px/s² gravity - Phaser 3.90 + Vite build system The new implementation is significantly cleaner and more maintainable than the previous bloated codebase, with each system in a single focused file.
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Summary of ChangesHello @truevox, I'm Gemini Code Assist1! I'm currently reviewing this pull request and will post my feedback shortly. In the meantime, here's a summary to help you and other reviewers quickly get up to speed! This pull request represents a complete rewrite of the 'Bitstream Bluffs' game, moving from a 'bloated codebase' to a significantly cleaner and more maintainable architecture. The primary goal was to align the implementation with detailed design specifications, resulting in a game with enhanced core mechanics, a distinct visual style, and a well-organized technical foundation. Highlights
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Code Review
This is an excellent and comprehensive rebuild of the game with a much cleaner, modular architecture. The code is well-structured and follows modern JavaScript practices. I've found a few critical issues related to performance and core mechanics, as well as some opportunities for improvement in code structure and gameplay design. My main concerns are a memory leak in the starfield effect, a fragile ground detection system for the player, and an encapsulation issue in the trick system. Addressing these will significantly improve the game's stability and maintainability. Great work on this major refactoring!
| for (let star of this.stars) { | ||
| const screenY = star.graphic.y - cameraY * star.graphic.scrollFactorY; | ||
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| // If star is way above camera, move it below | ||
| if (screenY < cameraY - 500) { | ||
| star.graphic.y = cameraY + 500 + Math.random() * 1000; | ||
| } | ||
| } |
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The star recycling logic in the update method is incorrect. The condition screenY < cameraY - 500 compares a screen-space-like coordinate (screenY) with a world-space coordinate (cameraY), which will not work as intended. This will prevent stars from being recycled correctly as the player moves down the screen, leading to an accumulation of game objects over time. This will cause significant performance degradation and memory leaks in a long play session.
The condition should compare the star's rendered screen position with the screen boundaries to determine if it's out of view.
for (let star of this.stars) {
const displayY = star.graphic.y - cameraY * star.graphic.scrollFactorY;
// If star is above the camera's view, move it below
if (displayY < -20) { // -20 is a buffer
star.graphic.y = cameraY + this.scene.cameras.main.height + Math.random() * 500;
star.graphic.x = Math.random() * 480; // Also randomize x to prevent patterns
}
}| updateGroundCheck(deltaSeconds) { | ||
| // Simple ground check based on vertical velocity | ||
| const velocity = this.sprite.body.velocity; | ||
| const angularVelocity = Math.abs(this.sprite.body.angularVelocity); | ||
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| // Consider grounded if moving slowly vertically and not spinning much | ||
| const wasOnGround = this.onGround; | ||
| this.onGround = Math.abs(velocity.y) < 2 && angularVelocity < 0.5; | ||
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| // Detect landing (transition from air to ground) | ||
| if (!wasOnGround && this.onGround) { | ||
| this.onLanded(); | ||
| } | ||
| } |
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The current ground detection mechanism in updateGroundCheck is based on vertical velocity and angular velocity. This approach can be unreliable on steep slopes or during minor bumps, potentially causing the player to be incorrectly considered airborne. This can negatively impact core gameplay mechanics like jumping and landing tricks.
A more robust solution would be to use Matter.js's collision events. The handleCollision method is already set up for this purpose but is currently empty. By implementing collision detection, you can more accurately determine when the player is on the ground.
| if (player.isRotating) { | ||
| const previousRotation = player.totalRotation; | ||
| const currentAngle = player.sprite.rotation; | ||
| const angleDiff = Phaser.Math.Angle.Wrap(currentAngle - player.rotationStartAngle); | ||
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| player.totalRotation = angleDiff; |
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The update method in TrickSystem directly modifies player.totalRotation. This violates encapsulation, as one system is directly changing the internal state of another. The Player class should be responsible for managing its own state, including its rotation.
This logic should be moved into the Player.update method to improve code structure and maintainability.
// This logic should be moved to the Player class.
// The TrickSystem should not modify the player's state directly.| this.bitStream = { | ||
| y: -200, | ||
| speed: 0.5, | ||
| active: true | ||
| }; |
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The "Bit Stream" chasing mechanic currently moves at a constant speed (this.bitStream.speed: 0.5). This might not provide a consistent challenge, as it could be too easy to outrun on fast sections or impossible to escape on slow sections. Consider making the Bit Stream's speed dynamic. For example, its speed could gradually increase over time, or it could adjust to maintain a certain distance from the player, making it a more relentless and fair threat.
…bility Fixed particle emitter creation to use Phaser 3.60+ API syntax. Changes: - Updated Player.js: Changed from particles.createEmitter() to add.particles() - Updated GameScene.js: Same fix for bit stream particles - Used 'emitting: false' instead of calling .stop() on initialization The old ParticleEmitterManager.createEmitter() was removed in Phaser 3.60. New syntax: scene.add.particles(x, y, texture, config)
…bility, correcting syntax and control methods Fixed particle emitter control methods to use Phaser 3.60+ API. Changes in Player.js updateVisuals(): - Changed .start() to .emitting = true - Changed .stop() to .emitting = false - Changed .setFrequency() to .frequency = value (direct property assignment) - Changed .setTint() to .setParticleTint() (new method name) The Phaser 3.60+ particle system uses properties and new method names instead of the old emitter methods.
Major improvements to terrain generation and camera system: Terrain Changes: - Replaced flat rectangular platforms with actual angled slopes (10-45°) - Each slope segment is a rotated Matter.js rectangle with proper physics - Terrain flows downhill naturally with horizontal variation - Slopes have varying lengths (80-180 units) for dynamic gameplay - Maintains three terrain types (blue/green/magenta) with friction properties Camera Changes: - Adjusted lerp factors for smoother X and Y following (0.08, 0.2) - Increased follow offset to -60 for better view ahead - Camera now properly tracks player movement in both directions Physics: - Angled terrain bodies provide realistic downhill sledding - Horizontal variation creates natural left/right movement - Proper friction values maintained per terrain type Visual: - Slopes drawn with proper geometry (parallelograms) - Wireframe borders and center lines for Tron aesthetic - Terrain redraws efficiently as player progresses This creates proper downhill sledding gameplay with slopes instead of flat platforms.
- Widened starting platform from 200 to 400 units (x=40 to x=440) - Player spawns at (240, 100) which is now centered on the platform - Increased starting platform thickness from 15 to 20 for better visibility - Slopes now begin from the end of starting platform (x=440) for smooth transition This prevents the player from spawning over void and falling before reaching slopes.
The terrain platform center was at y=100 with thickness 20, meaning: - Top edge at y=90 - Bottom edge at y=110 Player spawning at y=100 was inside the terrain body. Fixed by moving platform center to y=110: - Top edge now at y=100 (player sits on surface) - Bottom edge at y=120 - Slopes now start from y=110 to connect properly Player now spawns correctly on top of the starting platform.
Implemented dynamic camera leading that anticipates player movement: Camera Leading System: - Leads by up to 4 player widths (~96 units) when at full speed - Centered on player when stopped - Smoothly interpolates based on current velocity - Follows direction of movement (not just horizontal) Technical Details: - Max lead at 15 units/second velocity (good clip speed) - Lerp factor of 0.05 for smooth camera transitions - Less vertical leading (30%) to keep player visible - Directional leading based on velocity angle This creates the industry-standard 'look-ahead' camera that shows where you're going, making it easier to react to upcoming terrain and obstacles. The camera now: - Shows more terrain ahead when moving fast - Stays centered when stationary - Anticipates turns and slopes - Feels more responsive and professional
The camera was locked to 480 units wide (screen width), preventing any left/right following. Changed camera bounds from: - Old: (0, 0, 480, 100000) - no horizontal scrolling possible - New: (-2000, 0, 4000, 100000) - 4000 units wide for horizontal movement This allows: - Camera to follow player left/right as terrain varies - Velocity-based leading to work horizontally - Player to move across the horizontal game space The terrain already generates with horizontal variation, now the camera can actually follow it.
Fixed two critical camera issues: 1. Camera Leading Inverted: - Camera offset was backwards - showing behind instead of ahead - Phaser's followOffset is inverted: negative offset = look ahead - Changed to: targetLeadX = -cos(angle) × maxLead (negative!) - Changed to: targetLeadY = -sin(angle) × maxLead (negative!) - Increased vertical leading from 0.3 to 0.5 for better downhill view 2. Expanded Camera Bounds: - Increased from 4000 to 20000 units wide (x: -10000 to +10000) - Prevents camera from hitting bounds and stopping 3. Bit Stream Visual Fixed: - Now follows camera position (camX) instead of fixed x=0 - Spans across camera width dynamically - Particles centered on camera view 4. Increased camera lerp speed from 0.05 to 0.08 for more responsive following The camera now properly leads ahead in the direction of movement!
Rebuilt the entire game from scratch with a clean, focused architecture following the design specifications in instructions.html and DESIGN-DOC.md.
Core Features:
Visual & Effects:
Technical Architecture:
The new implementation is significantly cleaner and more maintainable than the previous bloated codebase, with each system in a single focused file.