mxashlynn/GB Studio Numbers Cheat Sheet.md

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GB Studio maxima & minima at a glance.

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GB Studio Numbers Cheat Sheet.md

GB Studio Numbers Cheat Sheet

Certain values relevant to GB Studio development! Updated to reflect GB Studio version 4.x.

Information compiled by 2BitCrook.

Pixel Counts

8 x 8 The size of a background tile.
8 x 16 The size of a sprite tile.
16 x 16 Two sprite tiles, a metasprite.
160 x 144 The base resolution for the GB and smallest size for a scene.
512 x 2040 Maximum size for a tall, narrow scene.
2040 x 512 Maximum size for a wide, short scene.
1016 x 1016 Maximum size for a square scene.
1016 x 1024 Maximum size for an almost-square scene.

Tile Counts

DMG (GBC)
52 (116) Max Background Tiles used as text characters before getting overwritten.
128 (256) Max Background Tiles in a scene to be able to have 96 sprite tiles available.
192 (384) Max Background Tiles in a scene and still be able to use dialog/text. 64 sprite tiles available.
256 (512) Max Background Tiles in a scene that isn't logo mode. 64 sprite tiles available.
360 (360) Amount of tiles that make up a 160x144 resolution. All tiles can be unique in logo mode. 12 sprite tiles available.
10 Max Sprite Tiles per row (scanline).
40 Max Sprite Tiles on screen at once.
- Metasprites can be composed at maximum by this number of sprites.
96 Max Sprite Tiles in a scene total.

Colour Counts

4 Colours per GBC palette.
- All 4 are used for Backgrounds Tiles (including text and UI).
- Only 3 are used for Sprite Tiles.
16 GBC palettes total
- 8 used for Background Tiles, with the 8th palette used for text and UI.
- 8 used for Sprite Tiles.

Colour Codes

#071821 Darkest tone for sprites and backgrounds.
#306850 Mid dark tone for backgrounds only.
#86c06c Mid light tone for sprites and backgrounds.
#e0f8cf Lightest tone for sprites and backgrounds
#65ff00 Transparency for sprites.
#ff00ff Transparency for variable width font glyphs.

Variable Counts

768 Total variables, global and local.

Variable Values

+32767 Max variable value.
-32768 Min variable value.
0 is treated as false.
Any other values is treated as true.

Other Counts

5 Unique projectiles per scene.
10 Active actors can be on screen at once.
20 Active actors in a large scene.

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