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TILE_FIRST_CHUNK_SIZE,
TILE_BANK_SIZE,
FLAG_VRAM_BANK_1,
MAX_BACKGROUND_TILES_CGB,
MAX_BACKGROUND_TILES,
SCREEN_WIDTH,
SCREEN_HEIGHT,
} from "consts";
import {
imageTileAllocationColorOnly,
imageTileAllocationDefault,
} from "lib/compiler/tileAllocation";
import { readFileToTilesDataArray } from "lib/tiles/readFileToTiles";
import { padArrayEnd } from "shared/lib/helpers/array";
import { assetFilename } from "shared/lib/helpers/assets";
import l10n from "shared/lib/lang/l10n";
import {
Tileset,
ColorModeSetting,
SceneTilemapData,
Scene,
} from "shared/lib/resources/types";
import { autoFlipTileData } from "shared/lib/tiles/autoFlip";
import {
tileArrayToTileData,
hashTileData,
toTileLookup,
tilesAndLookupToTilemap,
} from "shared/lib/tiles/tileData";
import {
flattenTilemapLayers,
buildSceneTilesetLookup,
decodeSceneTileRef,
} from "shared/lib/tiles/sceneTilemapData";
import promiseLimit from "lib/helpers/promiseLimit";
type PrecompiledSceneTilemapData = {
id: string;
name: string;
symbol: string;
width: number;
height: number;
commonTilesetId?: string;
vramData: [number[], number[]];
tilemap: number[];
attr: number[];
is360: boolean;
colorMode: ColorModeSetting;
tilesetLength: number;
};
type CompileImageOptions = {
warnings: (msg: string) => void;
};
const BLANK_TILE = new Uint8Array(16);
export const compileTilemapLayers = async (
scene: Scene & { tilemap: SceneTilemapData },
tilesetsLookup: Record<string, Tileset>,
commonTileset: Tileset | undefined,
colorMode: ColorModeSetting,
projectPath: string,
autoTileFlipEnabled: boolean,
{ warnings }: CompileImageOptions,
): Promise<PrecompiledSceneTilemapData> => {
const sceneTilemap = scene.tilemap;
const isInvalidSize =
scene.width < SCREEN_WIDTH ||
scene.height < SCREEN_HEIGHT ||
scene.width > 255 ||
scene.height > 255;
if (isInvalidSize) {
warnings(
`Tilemap used by scene "${scene.name}" is an invalid size ${scene.width}x${scene.height}`,
);
return {
id: scene.id,
name: scene.name,
symbol: `${scene.symbol}_bg`,
width: SCREEN_WIDTH,
height: SCREEN_HEIGHT,
vramData: [[...BLANK_TILE], []],
tilemap: new Array(SCREEN_WIDTH * SCREEN_HEIGHT).fill(0),
attr: new Array(SCREEN_WIDTH * SCREEN_HEIGHT).fill(0),
is360: false,
colorMode,
commonTilesetId: commonTileset?.id,
tilesetLength: 1,
};
}
const sourceTiles = new Map<string, Uint8Array[]>();
for (const { id: tilesetId } of sceneTilemap.tilesets) {
const tileset = tilesetsLookup[tilesetId];
if (tileset) {
sourceTiles.set(
tilesetId,
await readFileToTilesDataArray(
assetFilename(projectPath, "tilesets", tileset),
),
);
}
}
const commonTileData = commonTileset
? await readFileToTilesDataArray(
assetFilename(projectPath, "tilesets", commonTileset),
)
: [];
const refs = flattenTilemapLayers(sceneTilemap, scene.width, scene.height);
const sceneAttrs = sceneTilemap.tileColors ?? [];
const tilesetLookup = buildSceneTilesetLookup(sceneTilemap);
let cellTiles = refs.map((value) => {
const ref = decodeSceneTileRef(value, tilesetLookup);
if (!ref) {
return BLANK_TILE;
}
return sourceTiles.get(ref.tilesetId)?.[ref.tileIndex] ?? BLANK_TILE;
});
let attrs = sceneAttrs;
const cgbOnly = colorMode === "color";
if (cgbOnly && autoTileFlipEnabled) {
const flipped = autoFlipTileData({
tileData: cellTiles,
tileColors: attrs,
commonTileData,
});
cellTiles = flipped.tileData;
attrs = flipped.tileAttrs;
}
if (scene.type === "LOGO") {
const logoTileCount = SCREEN_WIDTH * SCREEN_HEIGHT;
const logoTiles = Array.from({ length: logoTileCount }, (_, index) => {
const x = index % SCREEN_WIDTH;
const y = Math.floor(index / SCREEN_WIDTH);
return cellTiles[y * scene.width + x] ?? BLANK_TILE;
});
const tilemap = Array.from({ length: logoTileCount }, (_, index) => index);
const attr = Array.from({ length: logoTileCount }, (_, index) => {
const x = index % SCREEN_WIDTH;
const y = Math.floor(index / SCREEN_WIDTH);
return attrs[y * scene.width + x] ?? 0;
});
return {
id: scene.id,
name: scene.name,
symbol: `${scene.symbol}_bg`,
width: SCREEN_WIDTH,
height: SCREEN_HEIGHT,
vramData: [[...tileArrayToTileData(logoTiles)], []],
tilemap,
attr,
is360: true,
colorMode,
tilesetLength: logoTileCount,
};
}
const commonHashes = new Set(commonTileData.map(hashTileData));
const uniqueTiles = Array.from(
new Map(cellTiles.map((tile) => [hashTileData(tile), tile])).entries(),
)
.filter(([hash]) => !commonHashes.has(hash))
.sort(([a], [b]) => a.localeCompare(b))
.map(([, tile]) => tile);
const tilesetData = [...commonTileData, ...uniqueTiles];
const tilesetDataLookup = toTileLookup(tilesetData);
const tilemap = tilesAndLookupToTilemap(cellTiles, tilesetDataLookup);
const allocation = cgbOnly
? imageTileAllocationColorOnly
: imageTileAllocationDefault;
const vramData: [number[], number[]] = [[], []];
Object.values(tilesetDataLookup).forEach((tile, index, tiles) => {
const { inVRAM2 } = allocation(index, tiles.length);
vramData[inVRAM2 ? 1 : 0].push(...tile);
});
const attr = padArrayEnd(attrs, tilemap.length, 0).map((value, index) => {
const { inVRAM2, tileIndex } = allocation(
tilemap[index] ?? 0,
Object.keys(tilesetDataLookup).length,
);
if (tileIndex < TILE_FIRST_CHUNK_SIZE) {
tilemap[index] = tileIndex;
} else E{
const bankSize = vramData[inVRAM2 ? 1 : 0].length / 16;
tilemap[index] = tileIndex + Math.max(TILE_BANK_SIZE - bankSize, 0);
}
return inVRAM2 ? value | FLAG_VRAM_BANK_1 : value;
});
const tilesetLength = Object.keys(tilesetDataLookup).length;
const maxTiles = cgbOnly ? MAX_BACKGROUND_TILES_CGB : MAX_BACKGROUND_TILES;
Iif (tilesetLength > maxTiles) {
warnings(
l10n("WARNING_TILEMAP_TOO_MANY_TILES", {
tilesetLength,
maxTilesetLength: maxTiles,
}),
);
}
return {
id: scene.id,
name: scene.name,
symbol: `${scene.symbol}_bg`,
width: scene.width,
height: scene.height,
vramData,
tilemap,
attr,
is360: false,
colorMode,
commonTilesetId: commonTileset?.id,
tilesetLength,
};
};
const compileSceneTilemaps = (
scenes: Scene[],
tilesetsLookup: Record<string, Tileset>,
projectColorMode: ColorModeSetting,
projectPath: string,
autoTileFlipEnabled: boolean,
{ warnings }: CompileImageOptions,
): Promise<PrecompiledSceneTilemapData[]> => {
return promiseLimit(
10,
scenes
.filter((scene): scene is Scene & { tilemap: SceneTilemapData } =>
Boolean(scene.tilemap),
)
.map((scene) => () => {
const tilemap = scene.tilemap;
const commonTileset = scene.tilesetId
? tilesetsLookup[scene.tilesetId]
: undefined;
const colorMode =
projectColorMode === "mono" || scene.colorModeOverride === "none"
? projectColorMode
: scene.colorModeOverride;
return compileTilemapLayers(
{ ...scene, tilemap },
tilesetsLookup,
commonTileset,
colorMode,
projectPath,
autoTileFlipEnabled,
{ warnings },
);
}),
);
};
export default compileSceneTilemaps;
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