initial rendering test

2022-01-30 23:48:49 +01:00
commit ddc7480529
12 changed files with 545 additions and 0 deletions
@@ -0,0 +1,74 @@
+window.World = class {
+
+    static get TOTAL_HEIGHT() {
+        return ChunkSection.SIZE * 16 - 1;
+    }
+
+    constructor() {
+        this.group = new THREE.Object3D();
+        this.chunks = [];
+
+        for (let x = -16; x < 16; x++) {
+            for (let z = -16; z < 16; z++) {
+                this.setBlockAt(x, 0, z, 1);
+            }
+        }
+    }
+
+    setBlockAt(x, y, z, type) {
+        let chunkSection = this.getChunkAtBlock(x, y, z);
+        if (chunkSection != null) {
+            chunkSection.setBlockAt(x & 15, y & 15, z & 15, type);
+        }
+
+        this.blockChanged(x, y, z);
+    }
+
+    getChunkAt(x, z) {
+        let zArray = this.chunks[x];
+        if (typeof zArray === 'undefined') {
+            zArray = this.chunks[x] = [];
+        }
+
+        let chunk = zArray[z];
+        if (typeof chunk === 'undefined') {
+            chunk = new Chunk(x, z);
+            this.chunks[x][z] = chunk;
+            this.group.add(chunk.group);
+        }
+        return chunk;
+    }
+
+    blockChanged(x, y, z) {
+        this.setDirty(x - 1, y - 1, z - 1, x + 1, y + 1, z + 1);
+    }
+
+    setDirty(minX, minY, minZ, maxX, maxY, maxZ) {
+        // To chunk coordinates
+        minX = minX >> 4;
+        maxX = maxX >> 4;
+        minY = minY >> 4;
+        maxY = maxY >> 4;
+        minZ = minZ >> 4;
+        maxZ = maxZ >> 4;
+
+        // Minimum and maximum y
+        minY = Math.max(0, minY);
+        maxY = Math.min(15, maxY);
+
+        for (let x = minX; x <= maxX; x++) {
+            for (let y = minY; y <= maxY; y++) {
+                for (let z = minZ; z <= maxZ; z++) {
+                    this.getChunkAt(x, y, z).queueForRebuild();
+                }
+            }
+        }
+    }
+
+    getChunkAtBlock(x, y, z) {
+        let chunk = this.getChunkAt(x >> 4, z >> 4);
+        return y < 0 || y > World.TOTAL_HEIGHT ? null : chunk.getSection(y >> 4);
+    }
+
+
+}