136 lines
4.9 KiB
Zig
136 lines
4.9 KiB
Zig
const std = @import("std");
|
|
|
|
const GBA = @import("gba").GBA;
|
|
const Mode3 = @import("gba").Mode3;
|
|
const LCD = @import("gba").LCD;
|
|
const OAM = @import("gba").OAM;
|
|
const Input = @import("gba").Input;
|
|
|
|
const sprites = @import("sprites.zig");
|
|
|
|
const sprite_attrs = [24]OAM.Attribute{
|
|
sprites.square.d2.bpp4.Sprite8x8.getAttribute(),
|
|
sprites.square.d2.bpp4.Sprite16x16.getAttribute(),
|
|
sprites.square.d2.bpp4.Sprite32x32.getAttribute(),
|
|
sprites.square.d2.bpp4.Sprite64x64.getAttribute(),
|
|
sprites.horizontal.d2.bpp4.Sprite16x8.getAttribute(),
|
|
sprites.horizontal.d2.bpp4.Sprite32x8.getAttribute(),
|
|
sprites.horizontal.d2.bpp4.Sprite32x16.getAttribute(),
|
|
sprites.horizontal.d2.bpp4.Sprite64x32.getAttribute(),
|
|
sprites.vertical.d2.bpp4.Sprite8x16.getAttribute(),
|
|
sprites.vertical.d2.bpp4.Sprite8x32.getAttribute(),
|
|
sprites.vertical.d2.bpp4.Sprite16x32.getAttribute(),
|
|
sprites.vertical.d2.bpp4.Sprite32x64.getAttribute(),
|
|
|
|
sprites.square.d2.bpp8.Sprite8x8.getAttribute(),
|
|
sprites.square.d2.bpp8.Sprite16x16.getAttribute(),
|
|
sprites.square.d2.bpp8.Sprite32x32.getAttribute(),
|
|
sprites.square.d2.bpp8.Sprite64x64.getAttribute(),
|
|
sprites.horizontal.d2.bpp8.Sprite16x8.getAttribute(),
|
|
sprites.horizontal.d2.bpp8.Sprite32x8.getAttribute(),
|
|
sprites.horizontal.d2.bpp8.Sprite32x16.getAttribute(),
|
|
sprites.horizontal.d2.bpp8.Sprite64x32.getAttribute(),
|
|
sprites.vertical.d2.bpp8.Sprite8x16.getAttribute(),
|
|
sprites.vertical.d2.bpp8.Sprite8x32.getAttribute(),
|
|
sprites.vertical.d2.bpp8.Sprite16x32.getAttribute(),
|
|
sprites.vertical.d2.bpp8.Sprite32x64.getAttribute(),
|
|
};
|
|
|
|
const sprite_load_fns = [24]fn () void{
|
|
sprites.square.d2.bpp4.Sprite8x8.load,
|
|
sprites.square.d2.bpp4.Sprite16x16.load,
|
|
sprites.square.d2.bpp4.Sprite32x32.load,
|
|
sprites.square.d2.bpp4.Sprite64x64.load,
|
|
sprites.horizontal.d2.bpp4.Sprite16x8.load,
|
|
sprites.horizontal.d2.bpp4.Sprite32x8.load,
|
|
sprites.horizontal.d2.bpp4.Sprite32x16.load,
|
|
sprites.horizontal.d2.bpp4.Sprite64x32.load,
|
|
sprites.vertical.d2.bpp4.Sprite8x16.load,
|
|
sprites.vertical.d2.bpp4.Sprite8x32.load,
|
|
sprites.vertical.d2.bpp4.Sprite16x32.load,
|
|
sprites.vertical.d2.bpp4.Sprite32x64.load,
|
|
|
|
sprites.square.d2.bpp8.Sprite8x8.load,
|
|
sprites.square.d2.bpp8.Sprite16x16.load,
|
|
sprites.square.d2.bpp8.Sprite32x32.load,
|
|
sprites.square.d2.bpp8.Sprite64x64.load,
|
|
sprites.horizontal.d2.bpp8.Sprite16x8.load,
|
|
sprites.horizontal.d2.bpp8.Sprite32x8.load,
|
|
sprites.horizontal.d2.bpp8.Sprite32x16.load,
|
|
sprites.horizontal.d2.bpp8.Sprite64x32.load,
|
|
sprites.vertical.d2.bpp8.Sprite8x16.load,
|
|
sprites.vertical.d2.bpp8.Sprite8x32.load,
|
|
sprites.vertical.d2.bpp8.Sprite16x32.load,
|
|
sprites.vertical.d2.bpp8.Sprite32x64.load,
|
|
};
|
|
|
|
// TODO: ZigGBA should support spaces, slashes, underscores, etc. in ROM Title
|
|
export var gameHeader linksection(".gbaheader") = GBA.Header.setup("SPRITE", "PAOD", "00", 0);
|
|
|
|
const obj_mapping = .TwoDimension;
|
|
|
|
pub fn main() noreturn {
|
|
LCD.setupDisplayControl(.{
|
|
.mode = .Mode0,
|
|
.objectLayer = .Show, // Enable Sprites
|
|
.objVramCharacterMapping = obj_mapping, // 2D Sprite Mapping
|
|
});
|
|
|
|
// FIXME: There are issues with OAM.Attribute and the ZigGBA API
|
|
// investigate what these issues are (could it just be my understanding?)
|
|
const attr_ptr = @intToPtr([*]OAM.Attribute, 0x0700_0000);
|
|
|
|
// Attr0 is in the least significant u16
|
|
const oam_slice = @intToPtr([*]u32, 0x0700_0000)[0 .. 0x400 / @sizeOf(u32)];
|
|
|
|
// Set bit 9 on all sprites, therefore disabling them all
|
|
for (oam_slice) |*attr| attr.* |= 0x0200;
|
|
|
|
// Grab Default Sprite (Square 64x64 4bpp)
|
|
var sprite = sprite_attrs[0];
|
|
sprite_load_fns[0]();
|
|
|
|
var x: i32 = 96;
|
|
var y: i32 = 32;
|
|
|
|
var size_idx: u2 = 0;
|
|
var shape_idx: u2 = 0;
|
|
var is_4bpp: bool = true;
|
|
|
|
while (true) {
|
|
LCD.naiveVSync();
|
|
Input.readInput();
|
|
|
|
const shoulder = @truncate(u2, @bitCast(u32, Input.getShoulderJustPressed()));
|
|
|
|
if (Input.isKeyJustPressed(Input.Keys.Start)) is_4bpp = !is_4bpp;
|
|
if (Input.isKeyJustPressed(Input.Keys.A)) shape_idx +%= 1;
|
|
if (Input.isKeyJustPressed(Input.Keys.B)) shape_idx -%= 1;
|
|
|
|
const input_cond =
|
|
Input.isKeyJustPressed(Input.Keys.A) or Input.isKeyJustPressed(Input.Keys.B) or Input.isKeyJustPressed(Input.Keys.Start);
|
|
|
|
if (shoulder != 0 or input_cond) {
|
|
size_idx +%= shoulder;
|
|
shape_idx %= 3;
|
|
|
|
loadSprite(is_4bpp, shape_idx, size_idx, &sprite);
|
|
}
|
|
|
|
x += Input.getHorizontal() * 2;
|
|
y += Input.getVertical() * 2;
|
|
|
|
sprite.setPosition(x, y);
|
|
attr_ptr[0] = sprite;
|
|
}
|
|
}
|
|
|
|
fn loadSprite(is_4bpp: bool, shape: usize, size: usize, sprite: *OAM.Attribute) void {
|
|
GBA.memset32(GBA.SPRITE_VRAM, 0, 0x8000); // Clear Sprite VRAM
|
|
|
|
const idx = @as(usize, 12) * @boolToInt(is_4bpp) + 4 * shape + size;
|
|
|
|
sprite.* = sprite_attrs[idx];
|
|
sprite_load_fns[idx]();
|
|
}
|