introduce game.arrayType && game.blocks

index.js

@@ -38,7 +38,7 @@ function Game(opts) {
   this.THREE = THREE
   this.vector = vector
   this.glMatrix = glMatrix
-
+  this.arrayType = opts.arrayType || Uint8Array
   this.cubeSize = 1 // backwards compat
   this.chunkSize = opts.chunkSize || 32
 
@@ -229,6 +229,20 @@ Game.prototype.blockPosition = function(pos) {
   return [ox, oy, oz]
 }
 
+Game.prototype.blocks = function(low, high, iterator) {
+  var l = low, h = high
+  var d = [ h[0]-l[0], h[1]-l[1], h[2]-l[2] ]
+  if (!iterator) var voxels = new this.arrayType(d[0]*d[1]*d[2])
+  var i = 0
+  for(var z=l[2]; z<h[2]; ++z)
+  for(var y=l[1]; y<h[1]; ++y)
+  for(var x=l[0]; x<h[0]; ++x, ++i) {
+    if (iterator) iterator(x, y, z, i)
+    else voxels[i] = this.voxels.voxelAtPosition([x, y, z])
+  }
+  if (!iterator) return {voxels: voxels, dims: d}
+}
+
 // backwards compat
 Game.prototype.createAdjacent = function(hit, val) {
   this.createBlock(hit.adjacent, val)

test.js

@@ -77,6 +77,13 @@ gameTest(function createBlock(game, t) {
   t.equal(game.createBlock(pos), true)
 })
 
+gameTest(function blocks(game, t) {
+  var pos = [6,6,6]
+  game.setBlock(pos, 1)
+  var blocks = game.blocks([5,5,5], [7,7,7]).voxels
+  t.equal(!!blocks[7], true)
+})
+
 gameTest(function raycastVoxels(game, t) {
   var pos = [50, 50, 50]
   game.setBlock(pos, 1)