implement world generator, frustum culling and rebuild queue

src/js/net/minecraft/util/EnumWorldBlockLayer.js

@@ -0,0 +1,4 @@
+window.EnumWorldBlockLayer = class {
+    static SOLID = 0;
+    static CUTOUT = 0;
+}

src/js/net/minecraft/util/MathHelper.js

@@ -8,4 +8,12 @@ window.MathHelper = class {
         return value < i ? i - 1 : i;
     }
 
+    static toDegrees(angle) {
+        return angle * (180 / Math.PI);
+    }
+
+    static toRadians(degree) {
+        return degree * (Math.PI / 180);
+    };
+
 }

src/js/net/minecraft/util/Random.js

@@ -0,0 +1,25 @@
+window.Random = class {
+
+    constructor(seed) {
+        this.mask = 0xffffffff;
+        this.m_w = (123456789 + seed) & this.mask;
+        this.m_z = (987654321 - seed) & this.mask;
+    }
+
+    nextBoolean() {
+        return this.nextFloat() > 0.5;
+    }
+
+    nextInt(max) {
+        return Math.floor(this.nextFloat() * (max + 1));
+    }
+
+    nextFloat() {
+        this.m_z = (36969 * (this.m_z & 65535) + (this.m_z >>> 16)) & this.mask;
+        this.m_w = (18000 * (this.m_w & 65535) + (this.m_w >>> 16)) & this.mask;
+
+        let result = ((this.m_z << 16) + (this.m_w & 65535)) >>> 0;
+        result /= 4294967296;
+        return result;
+    }
+}