Context Slice Code Size Check (REQUIRED)
Count total lines of code (excluding blank lines).
- Minimum acceptable: 800 lines
- Target: 1000-1500 lines
- If under 800 lines, the game is underbuilt. Go back and add depth.
Game Loop Depth
- Game loop has deltaTime calculation (not just timestamp)
- update() function is 30+ lines with real logic
- render() function is 50+ lines with multiple draw calls
- State machine handles 4+ states (menu, playing, paused, gameover)
Entity System Depth
- Player object has 8+ properties (x, y, vx, vy, speed, state, etc.)
- At least 3 different entity types exist
- Each entity type has distinct update behavior
- Each entity type has distinct rendering (not just color change)
Collision System Depth
- Collision function is reusable (not inline checks)
- Collision responses vary by entity pair
- Invincibility frames implemented
- Hit effects trigger (shake, flash, particles)
Visual System Depth
- Background is animated (scrolling, particles, or pattern)
- At least one particle effect system exists
- Screen shake function with decay
- Screen flash function exists
- Entities have animation or visual state changes
UI System Depth
- Start screen has animated elements (not static)
- HUD updates dynamically
- Game over shows statistics (not just score)
- State transitions have fade/animation effects
Input System Depth
- Both Arrow keys AND WASD work
- Touch controls implemented with virtual buttons or zones
- Pause toggle works (P or Escape)
- Restart works from game over (R or button)
Progression Depth
- Difficulty increases measurably over time
- At least 2 powerup types implemented
- Score multiplier or combo system exists
- High score persisted and displayed
Code Quality
- No TODO/FIXME comments
- No console.log statements
- No empty function bodies
- Constants declared at top
- Functions are 10-50 lines (not 2-line stubs)
Gate
If ANY checkbox fails OR code is under 800 lines, STOP and go back to add depth.
Do not proceed to deployment with an underbuilt game.