2d-games_skill

Overview

This skill distills practical principles for 2D game development, covering sprites, tilemaps, physics, and camera systems. It highlights common patterns and anti-patterns to help you build clear, performant 2D games. Use it to guide architecture choices and iterate faster on gameplay feel.

How this skill works

The skill inspects core subsystems: sprite organization and animation, tilemap layout and collision, 2D physics shapes and timesteps, and camera behaviors like follow and room-based systems. It recommends concrete configurations (tile sizes, FPS ranges, collision shape choices) and runtime practices (fixed timestep, layer filtering). It also flags common anti-patterns and offers genre-specific tweaks for platformers and top-down games.

When to use it

• Starting a new 2D project and choosing art and physics workflows
• Refactoring draw calls and texture use to improve performance
• Designing tilemaps, collision, and layering for levels
• Tuning player feel: jump behavior, coyote time, and camera follow
• Implementing multiplayer or split-screen multi-target cameras

Best practices

• Pack textures into atlases to reduce draw calls and simplify batching
• Choose tile sizes (16/32/64) early and stick to a consistent grid
• Prefer simplified collision shapes (box/circle/capsule) over complex polygons
• Use a fixed timestep for physics and interpolate visuals for smoothness
• Keep camera movement smooth and limit screen shake to short, diminishing bursts

Example use cases

• Optimize sprite rendering by moving from separate textures to a unified atlas
• Build auto-tiling terrain with layered tilemaps for background, terrain, and foreground
• Implement platformer controls with coyote time, jump buffering, and variable jump height
• Create a camera that follows the player with look-ahead and soft damping to reduce jitter
• Design collision for a top-down shooter using circle shapes for projectiles and capsule for characters