implement player and movement input

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

@@ -15,6 +15,38 @@ window.World = class {
         }
     }
 
+    getChunkAtBlock(x, y, z) {
+        let chunk = this.getChunkAt(x >> 4, z >> 4);
+        return y < 0 || y > World.TOTAL_HEIGHT ? null : chunk.getSection(y >> 4);
+    }
+
+    getCollisionBoxes(aabb) {
+        let boundingBoxList = [];
+
+        let minX = Math.floor(aabb.minX) - 1;
+        let maxX = Math.ceil(aabb.maxX) + 1;
+        let minY = Math.floor(aabb.minY) - 1;
+        let maxY = Math.ceil(aabb.maxY) + 1;
+        let minZ = Math.floor(aabb.minZ) - 1;
+        let maxZ = Math.ceil(aabb.maxZ) + 1;
+
+        for (let x = minX; x < maxX; x++) {
+            for (let y = minY; y < maxY; y++) {
+                for (let z = minZ; z < maxZ; z++) {
+                    if (this.isSolidBlockAt(x, y, z)) {
+                        boundingBoxList.push(new BoundingBox(x, y, z, x + 1, y + 1, z + 1));
+                    }
+                }
+            }
+        }
+        return boundingBoxList;
+    }
+
+    isSolidBlockAt(x, y, z) {
+        let typeId = this.getBlockAt(x, y, z);
+        return typeId !== 0; /* && Block.getById(typeId).isSolid();*/
+    }
+
     setBlockAt(x, y, z, type) {
         let chunkSection = this.getChunkAtBlock(x, y, z);
         if (chunkSection != null) {
@@ -24,6 +56,12 @@ window.World = class {
         this.blockChanged(x, y, z);
     }
 
+
+    getBlockAt(x, y, z) {
+        let chunkSection = this.getChunkAtBlock(x, y, z);
+        return chunkSection == null ? 0 : chunkSection.getBlockAt(x & 15, y & 15, z & 15);
+    }
+
     getChunkAt(x, z) {
         let zArray = this.chunks[x];
         if (typeof zArray === 'undefined') {
@@ -65,10 +103,4 @@ window.World = class {
         }
     }
 
-    getChunkAtBlock(x, y, z) {
-        let chunk = this.getChunkAt(x >> 4, z >> 4);
-        return y < 0 || y > World.TOTAL_HEIGHT ? null : chunk.getSection(y >> 4);
-    }
-
-
 }