riki/treehouse
riki/treehouse
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Code Issues 33 Activity

47 tiling

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This commit is contained in:
りき萌 2024-02-17 21:03:45 +01:00
parent d9b351ad64
commit 0e913e69a0
8 changed files with 246 additions and 38 deletions
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84
static/js/tairu/tairu.js
View file

@ -9,6 +9,52 @@ export function shouldConnect(a, b) {
return a == b;
}
const dirs47 = {
E: 0b0000_0001,
SE: 0b0000_0010,
S: 0b0000_0100,
SW: 0b0000_1000,
W: 0b0001_0000,
NW: 0b0010_0000,
N: 0b0100_0000,
NE: 0b1000_0000,
};
function isSet(integer, bit) {
return (integer & bit) == bit;
}
function removeRedundancies(t) {
if (isSet(t, dirs47.SE) && (!isSet(t, dirs47.S) || !isSet(t, dirs47.E))) {
t &= ~dirs47.SE;
}
if (isSet(t, dirs47.SW) && (!isSet(t, dirs47.S) || !isSet(t, dirs47.W))) {
t &= ~dirs47.SW;
}
if (isSet(t, dirs47.NW) && (!isSet(t, dirs47.N) || !isSet(t, dirs47.W))) {
t &= ~dirs47.NW;
}
if (isSet(t, dirs47.NE) && (!isSet(t, dirs47.N) || !isSet(t, dirs47.E))) {
t &= ~dirs47.NE;
}
return t;
}
function ordinalDirections() {
let unique = new Set();
for (let i = 0; i <= 0b1111_1111; ++i) {
unique.add(removeRedundancies(i));
}
return Array.from(unique).sort((a, b) => a - b);
}
let xToConnectionBitSet = ordinalDirections();
let connectionBitSetToX = new Uint8Array(256);
for (let i = 0; i < xToConnectionBitSet.length; ++i) {
connectionBitSetToX[xToConnectionBitSet[i]] = i;
}
console.log(connectionBitSetToX);
export class TileEditor extends Frame {
constructor() {
super();
@ -44,12 +90,16 @@ export class TileEditor extends Frame {
// 0st element is explicitly null because it represents the empty tile.
this.tilesets = [null];
this.tilesets47 = [null];
let attachedImages = this.getElementsByTagName("img");
for (let image of attachedImages) {
if (image.hasAttribute("data-tairu-tileset")) {
let tilesetIndex = parseInt(image.getAttribute("data-tairu-tileset"));
this.tilesets[tilesetIndex] = image;
} else if (image.hasAttribute("data-tairu-tileset-47")) {
let tilesetIndex = parseInt(image.getAttribute("data-tairu-tileset-47"));
this.tilesets47[tilesetIndex] = image;
}
}
@ -105,7 +155,7 @@ export class TileEditor extends Frame {
get hasTilesets() {
// Remember that tile 0 represents emptiness.
return this.tilesets.length > 1;
return this.tilesets.length > 1 || this.tilesets47.length > 1;
}
drawTiles() {
@ -135,22 +185,34 @@ export class TileEditor extends Frame {
for (let x = 0; x < this.tilemap.width; ++x) {
let tile = this.tilemap.at(x, y);
if (tile != 0) {
let tileset = this.tilesets[tile];
let tileset16 = this.tilesets[tile];
let tileset47 = this.tilesets47[tile];
let tileset = tileset47 != null ? tileset47 : tileset16;
let connectedWithEast = shouldConnect(tile, this.tilemap.at(x + 1, y)) ? 0b0001 : 0;
let connectedWithSouth = shouldConnect(tile, this.tilemap.at(x, y + 1)) ? 0b0010 : 0;
let connectedWithWest = shouldConnect(tile, this.tilemap.at(x - 1, y)) ? 0b0100 : 0;
let connectedWithNorth = shouldConnect(tile, this.tilemap.at(x, y - 1)) ? 0b1000 : 0;
let tileIndex = connectedWithNorth
| connectedWithWest
| connectedWithSouth
| connectedWithEast;
let tileIndex = 0;
if (tileset47 != null) {
let rawTileIndex = 0;
rawTileIndex |= shouldConnect(tile, this.tilemap.at(x + 1, y)) ? dirs47.E : 0;
rawTileIndex |= shouldConnect(tile, this.tilemap.at(x + 1, y + 1)) ? dirs47.SE : 0;
rawTileIndex |= shouldConnect(tile, this.tilemap.at(x, y + 1)) ? dirs47.S : 0;
rawTileIndex |= shouldConnect(tile, this.tilemap.at(x - 1, y + 1)) ? dirs47.SW : 0;
rawTileIndex |= shouldConnect(tile, this.tilemap.at(x - 1, y)) ? dirs47.W : 0;
rawTileIndex |= shouldConnect(tile, this.tilemap.at(x - 1, y - 1)) ? dirs47.NW : 0;
rawTileIndex |= shouldConnect(tile, this.tilemap.at(x, y - 1)) ? dirs47.N : 0;
rawTileIndex |= shouldConnect(tile, this.tilemap.at(x + 1, y - 1)) ? dirs47.NE : 0;
tileIndex = connectionBitSetToX[removeRedundancies(rawTileIndex)];
} else {
tileIndex |= shouldConnect(tile, this.tilemap.at(x + 1, y)) ? 0b0001 : 0;
tileIndex |= shouldConnect(tile, this.tilemap.at(x, y + 1)) ? 0b0010 : 0;
tileIndex |= shouldConnect(tile, this.tilemap.at(x - 1, y)) ? 0b0100 : 0;
tileIndex |= shouldConnect(tile, this.tilemap.at(x, y - 1)) ? 0b1000 : 0;
}
let tilesetTileSize = tileset.height;
let tilesetX = tileIndex * tilesetTileSize;
let tilesetY = 0;
this.ctx.drawImage(
this.tilesets[tile],
tileset,
tilesetX, tilesetY, tilesetTileSize, tilesetTileSize,
x * this.tileSize, y * this.tileSize, this.tileSize, this.tileSize,
);

7
static/js/tairu/tilemap-registry.js
View file

@ -36,5 +36,12 @@ export default {
" x x ",
" ",
]),
bitwiseAutotiling47: parseTilemap([
" x ",
" x ",
" xx xx ",
" xxxx ",
" x ",
]),
};