SpriteCook Dual-Grid 15-Piece Tilesets

Use this skill when implementing a top-down 15-piece SpriteCook tileset in a game engine or custom renderer.

This skill is about using a generated tileset. For generation, use spritecook-generate-tilesets.

Concept

A dual-grid tileset stores terrain as logical painted cells, then renders visible tiles between those cells. Each rendered tile is chosen from the four logical cells around it.

For each rendered tile, sample:

• top-left logical cell
• top-right logical cell
• bottom-left logical cell
• bottom-right logical cell

That four-cell pattern becomes a 4-bit mask. The mask chooses one frame from the 4x4 15-piece atlas.