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Sprites & Rendering
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~2 min readResources & Rendering

Sprites & Rendering

A sprite is a 2D image rendered at a position.

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Render system:

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Layers / z-order:

  • Sort sprites by layer before rendering.
  • Background → entities → UI → debug.
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Sprite sheets:

  • Many sprites in one image.
  • Crop with src_rect (x, y, w, h).
  • Saves texture switches.
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Animation:

  • Sequence of frames.
  • Animation component: current_frame, time_per_frame.
  • Animation system: advance frame, update sprite.
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Camera:

  • Position, zoom.
  • World position → screen position transform.
  • Render only visible (frustum cull).
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Real engines use GPU: vertex buffers, shaders, batching. For 2D pixel art, software blit is OK.

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