fix render glitches

src/js/net/minecraft/client/entity/Player.js

@@ -48,7 +48,6 @@ window.Player = class {
 
     resetPos() {
         this.setPos(0, 2, 0);
-        this.pitch = -90;
     }
 
     setPos(x, y, z) {

src/js/net/minecraft/client/render/BlockRenderer.js

@@ -9,11 +9,27 @@ window.BlockRenderer = class {
     renderBlock(world, group, typeId, x, y, z) {
         let boundingBox = new BoundingBox(0.0, 0.0, 0.0, 1.0, 1.0, 1.0);
 
-        for (let face = 0; face < 6; face++) {
-            this.renderFace(world, typeId, boundingBox, face, x, y, z);
+        let values = EnumBlockFace.values();
+        for (let i = 0; i < values.length; i++) {
+            let face = values[i];
+            if (this.shouldRenderFace(world, x, y, z, face)) {
+                // Start drawing
+                this.tessellator.startDrawing();
+
+                // Render face
+                this.renderFace(world, typeId, boundingBox, face, x, y, z);
+
+                // Draw
+                this.tessellator.draw(group);
+            }
         }
     }
 
+    shouldRenderFace(world, x, y, z, face) {
+        let typeId = world.getBlockAt(x + face.x, y + face.y, z + face.z);
+        return typeId === 0; /*|| Block.getById(typeId).isTransparent();*/
+    }
+
     renderFace(world, typeId, boundingBox, face, x, y, z) {
         // Vertex mappings
         let minX = x + boundingBox.minX;
@@ -34,37 +50,37 @@ window.BlockRenderer = class {
         minV = 1 - minV;
         maxV = 1 - maxV;
 
-        if (face === 0) {
+        if (face === EnumBlockFace.BOTTOM) {
             this.addBlockCorner(world, face, minX, minY, maxZ, minU, maxV);
             this.addBlockCorner(world, face, minX, minY, minZ, minU, minV);
             this.addBlockCorner(world, face, maxX, minY, minZ, maxU, minV);
             this.addBlockCorner(world, face, maxX, minY, maxZ, maxU, maxV);
         }
-        if (face === 1) {
+        if (face === EnumBlockFace.TOP) {
             this.addBlockCorner(world, face, maxX, maxY, maxZ, maxU, maxV);
             this.addBlockCorner(world, face, maxX, maxY, minZ, maxU, minV);
             this.addBlockCorner(world, face, minX, maxY, minZ, minU, minV);
             this.addBlockCorner(world, face, minX, maxY, maxZ, minU, maxV);
         }
-        if (face === 2) {
+        if (face === EnumBlockFace.EAST) {
             this.addBlockCorner(world, face, minX, maxY, minZ, maxU, minV);
             this.addBlockCorner(world, face, maxX, maxY, minZ, minU, minV);
             this.addBlockCorner(world, face, maxX, minY, minZ, minU, maxV);
             this.addBlockCorner(world, face, minX, minY, minZ, maxU, maxV);
         }
-        if (face === 3) {
+        if (face === EnumBlockFace.WEST) {
             this.addBlockCorner(world, face, minX, maxY, maxZ, minU, minV);
             this.addBlockCorner(world, face, minX, minY, maxZ, minU, maxV);
             this.addBlockCorner(world, face, maxX, minY, maxZ, maxU, maxV);
             this.addBlockCorner(world, face, maxX, maxY, maxZ, maxU, minV);
         }
-        if (face === 4) {
+        if (face === EnumBlockFace.NORTH) {
             this.addBlockCorner(world, face, minX, maxY, maxZ, maxU, minV);
             this.addBlockCorner(world, face, minX, maxY, minZ, minU, minV);
             this.addBlockCorner(world, face, minX, minY, minZ, minU, maxV);
             this.addBlockCorner(world, face, minX, minY, maxZ, maxU, maxV);
         }
-        if (face === 5) {
+        if (face === EnumBlockFace.SOUTH) {
             this.addBlockCorner(world, face, maxX, minY, maxZ, minU, maxV);
             this.addBlockCorner(world, face, maxX, minY, minZ, maxU, maxV);
             this.addBlockCorner(world, face, maxX, maxY, minZ, maxU, minV);

src/js/net/minecraft/client/render/Tessellator.js

@@ -12,36 +12,29 @@ window.Tessellator = class {
     }
 
     startDrawing() {
-        this.verticies = [];
+        this.addedVertices = 0;
+        this.vertices = [];
         this.uv = [];
-        this.index = [];
     }
 
     addVertexWithUV(x, y, z, u, v) {
+        this.addedVertices++;
+
         // Add vertex
-        this.verticies.push(x);
-        this.verticies.push(y);
-        this.verticies.push(z);
+        this.vertices.push(x);
+        this.vertices.push(y);
+        this.vertices.push(z);
 
         // Add UV
         this.uv.push(u);
         this.uv.push(v);
-
-        // Add index
-        let index = this.index.length / 6;
-        this.index.push(index + 0);
-        this.index.push(index + 2);
-        this.index.push(index + 1);
-        this.index.push(index + 0);
-        this.index.push(index + 3);
-        this.index.push(index + 2);
     }
 
     draw(group) {
         let geometry = new THREE.BufferGeometry();
-        geometry.setAttribute('position', new THREE.BufferAttribute(new Float32Array(this.verticies), 3));
+        geometry.setAttribute('position', new THREE.BufferAttribute(new Float32Array(this.vertices), 3));
         geometry.setAttribute('uv', new THREE.BufferAttribute(new Float32Array(this.uv), 2));
-        geometry.setIndex(new THREE.BufferAttribute(new Uint32Array(this.index), 1));
+        geometry.setIndex(new THREE.BufferAttribute(new Uint32Array([0, 2, 1, 0, 3, 2]), 1));
 
         let mesh = new THREE.Mesh(geometry, this.material);
         group.add(mesh);

src/js/net/minecraft/client/render/WorldRenderer.js

@@ -8,7 +8,7 @@ window.WorldRenderer = class {
                 || !!document.createElement('canvas').getContext('webgl'));
 
         // Create cameras
-        this.camera = new THREE.PerspectiveCamera(0, 1, 0.001, 10000);
+        this.camera = new THREE.PerspectiveCamera(0, 1, 0.001, 1000000);
         this.camera.rotation.order = 'ZYX';
         this.camera.up = new THREE.Vector3(0, 0, 1);
 

src/js/net/minecraft/client/world/ChunkSection.js

@@ -27,8 +27,6 @@ window.ChunkSection = class {
         this.dirty = false;
         this.group.clear();
 
-        renderer.blockRenderer.tessellator.startDrawing();
-
         for (let x = 0; x < ChunkSection.SIZE; x++) {
             for (let y = 0; y < ChunkSection.SIZE; y++) {
                 for (let z = 0; z < ChunkSection.SIZE; z++) {
@@ -44,8 +42,6 @@ window.ChunkSection = class {
                 }
             }
         }
-
-        renderer.blockRenderer.tessellator.draw(this.group);
     }
 
     getBlockAt(x, y, z) {

src/js/net/minecraft/client/world/World.js

@@ -13,6 +13,8 @@ window.World = class {
                 this.setBlockAt(x, 0, z, 1);
             }
         }
+
+        this.setBlockAt(0, 1, -2, 2);
     }
 
     getChunkAtBlock(x, y, z) {

src/js/net/minecraft/util/EnumBlockFace.js

@@ -0,0 +1,29 @@
+window.EnumBlockFace = class {
+
+    constructor(x, y, z) {
+        this.x = x;
+        this.y = y;
+        this.z = z;
+    }
+
+    static values() {
+        return [
+            EnumBlockFace.TOP,
+            EnumBlockFace.BOTTOM,
+            EnumBlockFace.NORTH,
+            EnumBlockFace.EAST,
+            EnumBlockFace.SOUTH,
+            EnumBlockFace.WEST
+        ];
+    }
+}
+
+{
+    let c = window.EnumBlockFace;
+    c.TOP = new EnumBlockFace(0, 1, 0);
+    c.BOTTOM = new EnumBlockFace(0, -1, 0);
+    c.NORTH = new EnumBlockFace(-1, 0, 0);
+    c.EAST = new EnumBlockFace(0, 0, -1);
+    c.SOUTH = new EnumBlockFace(1, 0, 0);
+    c.WEST = new EnumBlockFace(0, 0, 1);
+}

src/start.js

@@ -47,6 +47,7 @@ loadScripts([
     "libraries/three.min.js",
 
     // Minecraft Source
+    "src/js/net/minecraft/util/EnumBlockFace.js",
     "src/js/net/minecraft/util/Timer.js",
     "src/js/net/minecraft/util/MathHelper.js",
     "src/js/net/minecraft/util/BoundingBox.js",