diff --git a/src/math/Vector2.php b/src/math/Vector2.php
index 9a66ff8c1..e5c27f47f 100644
--- a/src/math/Vector2.php
+++ b/src/math/Vector2.php
@@ -23,12 +23,8 @@ class Vector2{
 	public $x, $y;
 
 	public function __construct($x = 0, $y = 0){
-		if(($x instanceof Vector2) === true){
-			$this->__construct($x->x, $x->y);
-		}else{
-			$this->x = $x;
-			$this->y = $y;
-		}
+		$this->x = $x;
+		$this->y = $y;
 	}
 
 	public function getX(){
diff --git a/src/math/Vector3.php b/src/math/Vector3.php
index 274ee7311..097424f00 100644
--- a/src/math/Vector3.php
+++ b/src/math/Vector3.php
@@ -23,13 +23,9 @@ class Vector3{
 	public $x, $y, $z;
 
 	public function __construct($x = 0, $y = 0, $z = 0){
-		if(($x instanceof Vector3) === true){
-			$this->__construct($x->x, $x->y, $x->z);
-		}else{
-			$this->x = $x;
-			$this->y = $y;
-			$this->z = $z;
-		}
+		$this->x = $x;
+		$this->y = $y;
+		$this->z = $z;
 	}
 
 	public function getX(){
diff --git a/src/pmf/Level.php b/src/pmf/Level.php
index 3cf41471a..1e33232b8 100644
--- a/src/pmf/Level.php
+++ b/src/pmf/Level.php
@@ -305,6 +305,9 @@ class PMFLevel extends PMF{
 	}
 	
 	public function getBlockID($x, $y, $z){
+		if($y > 127 or $y < 0 or $x < 0 or $z < 0 or $x > 255 or $z > 255){
+			return 0;
+		}
 		$X = $x >> 4;
 		$Z = $z >> 4;
 		$Y = $y >> 4;
@@ -312,11 +315,16 @@ class PMFLevel extends PMF{
 		$aX = $x - ($X << 4);
 		$aZ = $z - ($Z << 4);
 		$aY = $y - ($Y << 4);
-		$b = ord($this->chunks[$index][$Y]{(int) ($aY + ($aX << 5) + ($aZ << 9))});
+		$b = ord($this->chunks[$index]
+		[$Y]
+		{(int) ($aY + ($aX << 5) + ($aZ << 9))});
 		return $b;		
 	}
 	
 	public function setBlockID($x, $y, $z, $block){
+		if($y > 127 or $y < 0 or $x < 0 or $z < 0 or $x > 255 or $z > 255){
+			return false;
+		}
 		$X = $x >> 4;
 		$Z = $z >> 4;
 		$Y = $y >> 4;
diff --git a/src/utils/Random.php b/src/utils/Random.php
index 7e2e7ea69..fd0273ecb 100644
--- a/src/utils/Random.php
+++ b/src/utils/Random.php
@@ -22,38 +22,54 @@
 
 //Unsecure, not used for "Real Randomness"
 class Random{
-	private $random;
+	private $x, $y, $z, $w;
 	public function __construct($seed = false){
-		$this->random = new twister(0);
 		$this->setSeed($seed);
 	}
 	
 	public function setSeed($seed = false){
-		$this->random->init_with_integer($seed !== false ? (int) $seed:Utils::readInt(Utils::getRandomBytes(4, false)));
+		$seed = $seed !== false ? Utils::writeInt((int) $seed):Utils::getRandomBytes(4, false);
+		$state = array();
+		for($i = 0; $i < 256; ++$i){
+			$state[] = $i;
+		}
+		for($i = $j = 0; $i < 256; ++$i){
+			$j = ($j + ord($seed{$i & 0x03}) + $state[$i]) & 0xFF;
+			$state[$i] ^= $state[$j];
+			$state[$j] ^= $state[$i];
+			$state[$i] ^= $state[$j];
+		}
+		$this->state = $state;
+		$this->i = $this->j = 0;
 	}
 	
 	public function nextInt(){
-		return $this->random->int32();
+		return Utils::readInt($this->nextBytes(4)) & 0x7FFFFFFF;
 	}
 	
 	public function nextFloat(){
-		return $this->random->real_closed();
+		return $this->nextInt() / 0x7FFFFFFF;
 	}
 	
 	public function nextBytes($byteCount){
 		$bytes = "";
 		for($i = 0; $i < $byteCount; ++$i){
-			$bytes .= chr($this->random->rangeint(0, 0xFF));
+			$this->i = ($this->i + 1) & 0xFF;
+			$this->j = ($this->j + $this->state[$this->i]) & 0xFF;
+			$this->state[$this->i] ^= $this->state[$this->j];
+			$this->state[$this->j] ^= $this->state[$this->i];
+			$this->state[$this->i] ^= $this->state[$this->j];
+			$bytes .= chr($this->state[($this->state[$this->i] + $this->state[$this->j]) & 0xFF]);
 		}
 		return $bytes;
 	}
 	
 	public function nextBoolean(){
-		return $this->random->rangeint(0, 1) === 1;
+		return ($this->nextBytes(1) & 0x01) == 0;
 	}
 	
 	public function nextRange($start = 0, $end = PHP_INT_MAX){
-		return $this->random->rangeint($start, $end);
+		return $start + ($this->nextInt() % ($end + 1 - $start));
 	}
 
 }
\ No newline at end of file
diff --git a/src/world/generator/SuperflatGenerator.php b/src/world/generator/SuperflatGenerator.php
index 0f3b1ae47..dfd3c4a18 100644
--- a/src/world/generator/SuperflatGenerator.php
+++ b/src/world/generator/SuperflatGenerator.php
@@ -127,7 +127,7 @@ class SuperflatGenerator implements LevelGenerator{
 	
 	public function populateChunk($chunkX, $chunkZ){		
 		foreach($this->populators as $populator){
-			$this->random->setSeed((int) ($chunkX * 0xdead + $chunkZ * 0xbeef));
+			$this->random->setSeed((int) ($chunkX * 0xdead + $chunkZ * 0xbeef) ^ $this->level->getSeed());
 			$populator->populate($this->level, $chunkX, $chunkZ, $this->random);
 		}
 	}
@@ -167,17 +167,17 @@ class SuperflatGenerator implements LevelGenerator{
 				$grasscount = intval($this->options["spawn"]["grasscount"]);
 			}
 			for($t = 0; $t < $treecount; ++$t){
-				$centerX = $this->random->nextRange(0, 256);
-				$centerZ = $this->random->nextRange(0, 256);
-				$down = $this->level->getBlock(new Vector3($centerX, $this->floorLevel - 1, $centerZ))->getID();
+				$centerX = $this->random->nextRange(0, 255);
+				$centerZ = $this->random->nextRange(0, 255);
+				$down = $this->level->level->getBlockID($centerX, $this->floorLevel - 1, $centerZ);
 				if($down === DIRT or $down === GRASS or $down === FARMLAND){
 					TreeObject::growTree($this->level, new Vector3($centerX, $this->floorLevel, $centerZ), $this->random, $this->random->nextRange(0,3));
 				}
 			}
 			for($t = 0; $t < $grasscount; ++$t){
-				$centerX = $this->random->nextRange(0, 256);
-				$centerZ = $this->random->nextRange(0, 256);
-				$down = $this->level->getBlock(new Vector3($centerX, $this->floorLevel - 1, $centerZ))->getID();
+				$centerX = $this->random->nextRange(0, 255);
+				$centerZ = $this->random->nextRange(0, 255);
+				$down = $this->level->level->getBlockID($centerX, $this->floorLevel - 1, $centerZ);
 				if($down === GRASS){
 					TallGrassObject::growGrass($this->level, new Vector3($centerX, $this->floorLevel - 1, $centerZ), $this->random, $this->random->nextRange(8, 40));
 				}
diff --git a/src/world/generator/object/OreObject.php b/src/world/generator/object/OreObject.php
index 90a2eb9fe..8ad0c64f8 100644
--- a/src/world/generator/object/OreObject.php
+++ b/src/world/generator/object/OreObject.php
@@ -32,13 +32,13 @@ class OreObject{
 		return $this->type;
 	}
 	
-	public function canPlaceObject(Level $level, Vector3 $pos){
-		return ($level->getBlock($pos)->getID() !== AIR);
+	public function canPlaceObject(Level $level, $x, $y, $z){
+		return ($level->level->getBlockID($x, $y, $z) != AIR);
 	}
 	
 	public function placeObject(Level $level, Vector3 $pos){
 		$clusterSize = (int) $this->type->clusterSize;
-		$angle = $this->random->nextFloat() * pi();
+		$angle = $this->random->nextFloat() * M_PI;
 		$offset = VectorMath::getDirection2D($angle)->multiply($clusterSize)->divide(8);
 		$x1 = $pos->x + 8 + $offset->x;
 		$x2 = $pos->x + 8 - $offset->x;
@@ -50,7 +50,7 @@ class OreObject{
 			$seedX = $x1 + ($x2 - $x1) * $count / $clusterSize;
 			$seedY = $y1 + ($y2 - $y1) * $count / $clusterSize;
 			$seedZ = $z1 + ($z2 - $z1) * $count / $clusterSize;
-			$size = ((sin($count * (pi() / $clusterSize)) + 1) * $this->random->nextFloat() * $clusterSize / 16 + 1) / 2;
+			$size = ((sin($count * (M_PI / $clusterSize)) + 1) * $this->random->nextFloat() * $clusterSize / 16 + 1) / 2;
 			
 			$startX = (int) ($seedX - $size);
 			$startY = (int) ($seedY - $size);
@@ -67,9 +67,8 @@ class OreObject{
 						if($y > 0 and ($sizeX + $sizeY) < 1){
 							for($z = $startZ; $z <= $endZ; ++$z){
 								$sizeZ = pow(($z + 0.5 - $seedZ) / $size, 2);
-								$v = new Vector3($x, $y, $z);
-								if(($sizeX + $sizeY + $sizeZ) < 1 and $level->getBlock($v)->getID() === STONE){
-									$level->setBlockRaw($v, $this->type->material);
+								if(($sizeX + $sizeY + $sizeZ) < 1 and $level->level->getBlockID($x, $y, $z) === STONE){
+									$level->setBlockRaw(new Vector3($x, $y, $z), $this->type->material);
 								}
 							}
 						}
diff --git a/src/world/generator/object/grass/TallGrassObject.php b/src/world/generator/object/grass/TallGrassObject.php
index 0ea2bcdcc..62bb04edc 100644
--- a/src/world/generator/object/grass/TallGrassObject.php
+++ b/src/world/generator/object/grass/TallGrassObject.php
@@ -23,23 +23,21 @@
 class TallGrassObject{
 	public static function growGrass(Level $level, Vector3 $pos, Random $random, $count = 15){
 		$arr = array(
-			array(DANDELION, 0),
-			array(CYAN_FLOWER, 0),
-			array(TALL_GRASS, 1),
-			array(TALL_GRASS, 1),
-			array(TALL_GRASS, 1),
-			array(TALL_GRASS, 1),
-			array(AIR, 0),
+			BlockAPI::get(DANDELION, 0),
+			BlockAPI::get(CYAN_FLOWER, 0),
+			BlockAPI::get(TALL_GRASS, 1),
+			BlockAPI::get(TALL_GRASS, 1),
+			BlockAPI::get(TALL_GRASS, 1),
+			BlockAPI::get(TALL_GRASS, 1)
 		);
-		$radius = ceil(sqrt($count) / 2);
+		$radius = 10;
+		$arrC = count($arr) - 1;
 		for($c = 0; $c < $count; ++$c){
 			$x = $random->nextRange($pos->x - $radius, $pos->x + $radius);
 			$z = $random->nextRange($pos->z - $radius, $pos->z + $radius);
-			$b = $level->getBlock(new Vector3($x, $pos->y + 1, $z));
-			$d = $level->getBlock(new Vector3($x, $pos->y, $z));
-			if($b->getID() === AIR and $d->getID() === GRASS){
-				$t = $arr[$random->nextRange(0, count($arr) - 1)];
-				$level->setBlockRaw($b, BlockAPI::get($t[0], $t[1]));
+			if($level->level->getBlockID($x, $pos->y + 1, $z) === AIR and $level->level->getBlockID($x, $pos->y, $z) === GRASS){
+				$t = $arr[$random->nextRange(0, $arrC)];
+				$level->setBlockRaw(new Vector3($x, $pos->y + 1, $z), $t);
 			}
 		}
 	}
diff --git a/src/world/generator/object/tree/PineTreeObject.php b/src/world/generator/object/tree/PineTreeObject.php
index a3e75f960..ed3276aad 100644
--- a/src/world/generator/object/tree/PineTreeObject.php
+++ b/src/world/generator/object/tree/PineTreeObject.php
@@ -38,8 +38,7 @@ class PineTreeObject extends TreeObject{
 			}
 			for($xx = -$checkRadius; $xx < ($checkRadius + 1); ++$xx){
 				for($zz = -$checkRadius; $zz < ($checkRadius + 1); ++$zz){
-					$block = $level->getBlock(new Vector3($pos->x + $xx, $pos->y + $yy, $pos->z + $zz));
-					if(!isset($this->overridable[$block->getID()])){
+					if(!isset($this->overridable[$level->level->getBlockID($pos->x + $xx, $pos->y + $yy, $pos->z + $zz)])){
 						return false;
 					}
 				}
diff --git a/src/world/generator/object/tree/SmallTreeObject.php b/src/world/generator/object/tree/SmallTreeObject.php
index 1fb5eee8d..394887e56 100644
--- a/src/world/generator/object/tree/SmallTreeObject.php
+++ b/src/world/generator/object/tree/SmallTreeObject.php
@@ -41,8 +41,7 @@ class SmallTreeObject extends TreeObject{
 			}
 			for($xx = -$radiusToCheck; $xx < ($radiusToCheck + 1); ++$xx){
 				for($zz = -$radiusToCheck; $zz < ($radiusToCheck + 1); ++$zz){
-					$block = $level->getBlock(new Vector3($pos->x + $xx, $pos->y + $yy, $pos->z + $zz));
-					if(!isset($this->overridable[$block->getID()])){
+					if(!isset($this->overridable[$level->level->getBlockID($pos->x + $xx, $pos->y + $yy, $pos->z + $zz)])){
 						return false;
 					}
 				}
@@ -53,7 +52,7 @@ class SmallTreeObject extends TreeObject{
 
 	public function placeObject(Level $level, Vector3 $pos, Random $random){
       // The base dirt block
-      $dirtpos = new Vector3( $pos->x, $pos->y -1, $pos->z );
+      $dirtpos = new Vector3( $pos->x, $pos->y - 1, $pos->z );
 		$level->setBlockRaw( $dirtpos, new DirtBlock() );
 
       // Adjust the tree trunk's height randomly
diff --git a/src/world/generator/object/tree/SpruceTreeObject.php b/src/world/generator/object/tree/SpruceTreeObject.php
index 796c0bf73..c027ac644 100644
--- a/src/world/generator/object/tree/SpruceTreeObject.php
+++ b/src/world/generator/object/tree/SpruceTreeObject.php
@@ -38,8 +38,7 @@ class SpruceTreeObject extends TreeObject{
 			}
 			for($xx = -$checkRadius; $xx < ($checkRadius + 1); ++$xx){
 				for($zz = -$checkRadius; $zz < ($checkRadius + 1); ++$zz){
-					$block = $level->getBlock(new Vector3($pos->x + $xx, $pos->y + $yy, $pos->z + $zz));
-					if(!isset($this->overridable[$block->getID()])){
+					if(!isset($this->overridable[$level->level->getBlockID($pos->x + $xx, $pos->y + $yy, $pos->z + $zz)])){
 						return false;
 					}
 				}
diff --git a/src/world/generator/populator/OrePopulator.php b/src/world/generator/populator/OrePopulator.php
index 5830a051d..390cbcba7 100644
--- a/src/world/generator/populator/OrePopulator.php
+++ b/src/world/generator/populator/OrePopulator.php
@@ -25,13 +25,11 @@ class OrePopulator extends Populator{
 		foreach($this->oreTypes as $type){
 			$ore = new OreObject($random, $type);
 			for($i = 0; $i < $ore->type->clusterCount; ++$i){
-				$v = new Vector3(
-					$random->nextRange($chunkX << 4, ($chunkX << 4) + 16),
-					$random->nextRange($ore->type->minHeight, $ore->type->maxHeight),
-					$random->nextRange($chunkZ << 4, ($chunkZ << 4) + 16)
-				);
-				if($ore->canPlaceObject($level, $v)){
-					$ore->placeObject($level, $v);
+				$x = $random->nextRange($chunkX << 4, ($chunkX << 4) + 16);
+				$y = $random->nextRange($ore->type->minHeight, $ore->type->maxHeight);
+				$z = $random->nextRange($chunkZ << 4, ($chunkZ << 4) + 16);
+				if($ore->canPlaceObject($level, $x, $y, $z)){
+					$ore->placeObject($level, new Vector3($x, $y, $z));
 				}
 			}
 		}