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| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 | 5x 5x 5x 5x 5x 5x 5x 5x 5x 2179x 2179x 1254x 925x 164x 761x 5x 1x 1x 1x 1x 1x 3x 1x 2x 5x 18x 18x 18x 18x 272x 2176x 2176x 2176x 2176x 2176x 160x 2016x 368x 18x 5x 18x 18x 18x 18x 272x 2176x 2176x 2176x 2176x 18x 5x 20x 20x 1017x 17x 3x 5x 18x 276x 16x 2x 5x 3x 3x 384x 64x 3x 5x 24x 24x 1536x 208x 24x 5x 5x 5x 5x | import {
cloneIndexedImage,
ImageIndexFunction,
IndexedImage,
toIndex,
} from "shared/lib/tiles/indexedImage";
export type OptimisedTile = {
tile: number;
flipX: boolean;
flipY: boolean;
};
enum Color {
Transparent = 0,
Light = 1,
Mid = 2,
Dark = 3,
Divider = 254,
Unknown = 255,
}
export const spriteDataIndexFn: ImageIndexFunction = (r, g, b, _a) => {
Iif ((g > 249 && r < 180 && b < 20) || (b >= 200 && g < 20) || _a < 200) {
return Color.Transparent;
} else if (g >= 205) {
return Color.Light;
} else if (g >= 130) {
return Color.Mid;
} else {
return Color.Dark;
}
};
export const spriteDataIndexFnWithTransparentColor = (
transparentColor: string,
): ImageIndexFunction => {
const normalized = transparentColor.replace(/^#/, "").padStart(6, "0");
const transparentR = parseInt(normalized.slice(0, 2), 16);
const transparentG = parseInt(normalized.slice(2, 4), 16);
const transparentB = parseInt(normalized.slice(4, 6), 16);
return (r, g, b, a) => {
if (r === transparentR && g === transparentG && b === transparentB) {
return Color.Transparent;
}
return spriteDataIndexFn(r, g, b, a);
};
};
export const removeIndexedImageMask = (
inData: IndexedImage,
maskData: IndexedImage,
offsetX: number,
offsetY: number,
): IndexedImage => {
const output = cloneIndexedImage(inData);
const inWidth = inData.width;
const inHeight = inData.height;
for (let y = 0; y < inHeight; y++) {
for (let x = 0; x < inWidth; x++) {
const drawIndex = toIndex(x, y, inData);
const maskIndex = toIndex(x + offsetX, y + offsetY, maskData);
const maskX = x + offsetX;
const maskY = y + offsetY;
if (
maskX < 0 ||
maskY < 0 ||
maskX >= maskData.width ||
maskY >= maskData.height
) {
// Mark tile data outside of canvas bounds as unknown
output.data[drawIndex] = Color.Unknown;
} else if (maskData.data[maskIndex] !== Color.Transparent) {
// Mark occluded tile data as unknown
output.data[drawIndex] = Color.Unknown;
}
}
}
return output;
};
export const blitIndexedImageData = (
canvasData: IndexedImage,
inData: IndexedImage,
offsetX: number,
offsetY: number,
): IndexedImage => {
const output = cloneIndexedImage(canvasData);
const drawWidth = inData.width;
const drawHeight = inData.height;
for (let y = 0; y < drawHeight; y++) {
for (let x = 0; x < drawWidth; x++) {
const drawIndex = toIndex(x, y, inData);
if (inData.data[drawIndex] !== Color.Transparent) {
const canvasIndex = toIndex(x + offsetX, y + offsetY, canvasData);
output.data[canvasIndex] = inData.data[drawIndex];
}
}
}
return output;
};
export const isIndexedImageEqual = (
dataA: IndexedImage,
dataB: IndexedImage,
): boolean => {
Iif (
dataA.width !== dataB.width ||
dataA.height !== dataB.height ||
dataA.data.length !== dataB.data.length
) {
return false;
}
for (let i = 0; i < dataA.data.length; i++) {
if (
dataA.data[i] !== dataB.data[i] &&
dataA.data[i] !== Color.Unknown &&
dataB.data[i] !== Color.Unknown
) {
return false;
}
}
return true;
};
export const isBlankIndexedImage = (image: IndexedImage): boolean => {
for (let i = 0; i < image.data.length; i++) {
if (
image.data[i] !== Color.Transparent &&
image.data[i] !== Color.Unknown
) {
return false;
}
}
return true;
};
export const mergeIndexedImages = (
dataA: IndexedImage,
dataB: IndexedImage,
): IndexedImage => {
const output = cloneIndexedImage(dataA);
for (let i = 0; i < output.data.length; i++) {
if (output.data[i] === Color.Unknown) {
output.data[i] = dataB.data[i];
}
}
return output;
};
export const indexedUnknownToTransparent = (
inData: IndexedImage,
): IndexedImage => {
const output = cloneIndexedImage(inData);
for (let i = 0; i < output.data.length; i++) {
if (output.data[i] === Color.Unknown) {
output.data[i] = Color.Transparent;
}
}
return output;
};
// ------------
// To 2bpp
export const indexedImageTo2bppSpriteData = (
image: IndexedImage,
): Uint8Array => {
const output = new Uint8Array(roundUp8((image.width * image.height) / 4));
let i = 0;
for (let y = 0; y < 8; y++) {
let row1 = "";
let row2 = "";
for (let x = 0; x < 8; x++) {
const index = toIndex(x, y, image);
const binary = bin2(image.data[index]);
row1 += binary[1];
row2 += binary[0];
}
output[i] = binDec(row1);
i++;
output[i] = binDec(row2);
i++;
}
return output;
};
// ------------
const roundUp8 = (x: number): number => Math.ceil(x / 8) * 8;
const bin2 = (value: Color) => value.toString(2).padStart(2, "0");
const binDec = (binary: string) => parseInt(binary, 2);
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