zba-tests/README.md

An Almost-empty GBA Test Collection

NOTE: This only builds on stage1 due to unimplemented language features that ZigGBA relies on.

2d_sprites.gba

At some point during my initial PPU Implementation, I had problems with 2D-mapped vertical sprites. This is a ROM based on TONC's sprite_demo.gba That displays every kind of 2D-mapped sprite.

This ROM will display:

• 4BPP
  • Square: 8x8, 16x16, 32x32, 64x64
  • Horizontal: 16x8, 32x8, 32x16, 64x32
  • Vertical: 8x16, 8x32, 16x32, 32x64
• 8BPP
  • Square: 8x8, 16x16, 32x32, 64x64
  • Horizontal: 16x8, 32x8, 32x16, 64x32
  • Vertical: 8x16, 8x32, 16x32, 32x64

Keep in mind that all displayed sprites are 2D-mapped.

TODO: Do the same but for 1D mapped sprites.
TODO: Figure out how to communicate current configurations to the user.

Controls

Button	Action
Start	Toggle Between 8bpp and 4bpp
L, R	Change the Size of the Sprite (Dimentions within the context of a Shape)
A, B	Change the Shape of the Sprite (Square, Horizontal, Vertical)
D-Pad	Move Sprite