From 275e27f7a947292658c661c936029a30e8345f39 Mon Sep 17 00:00:00 2001
From: Shoghi Cervantes <shoghicp@gmail.com>
Date: Sun, 8 Sep 2013 01:21:40 +0200
Subject: [PATCH] Low level PMF level interface

---
 src/API/BlockAPI.php |  3 +-
 src/pmf/Level.php    | 91 ++++++++++++++++++++++++++++++++++++++++++--
 src/world/Level.php  | 12 +++---
 3 files changed, 95 insertions(+), 11 deletions(-)

diff --git a/src/API/BlockAPI.php b/src/API/BlockAPI.php
index 6a44ba457..e0927f854 100644
--- a/src/API/BlockAPI.php
+++ b/src/API/BlockAPI.php
@@ -167,12 +167,11 @@ class BlockAPI{
 	}
 
 	public static function get($id, $meta = 0, $v = false){
-		$id = (int) $id;
 		if(isset(Block::$class[$id])){
 			$classname = Block::$class[$id];
 			$b = new $classname($meta);
 		}else{
-			$b = new GenericBlock($id, $meta);
+			$b = new GenericBlock((int) $id, $meta);
 		}
 		if($v instanceof Position){
 			$b->position($v);
diff --git a/src/pmf/Level.php b/src/pmf/Level.php
index 160ac8abc..3cf41471a 100644
--- a/src/pmf/Level.php
+++ b/src/pmf/Level.php
@@ -304,6 +304,91 @@ class PMFLevel extends PMF{
 		return true;
 	}
 	
+	public function getBlockID($x, $y, $z){
+		$X = $x >> 4;
+		$Z = $z >> 4;
+		$Y = $y >> 4;
+		$index = $this->getIndex($X, $Z);
+		$aX = $x - ($X << 4);
+		$aZ = $z - ($Z << 4);
+		$aY = $y - ($Y << 4);
+		$b = ord($this->chunks[$index][$Y]{(int) ($aY + ($aX << 5) + ($aZ << 9))});
+		return $b;		
+	}
+	
+	public function setBlockID($x, $y, $z, $block){
+		$X = $x >> 4;
+		$Z = $z >> 4;
+		$Y = $y >> 4;
+		$block &= 0xFF;
+		$meta &= 0x0F;
+		if($X >= 32 or $Z >= 32 or $Y >= $this->levelData["height"] or $y < 0){
+			return false;
+		}
+		$index = $this->getIndex($X, $Z);
+		$aX = $x - ($X << 4);
+		$aZ = $z - ($Z << 4);
+		$aY = $y - ($Y << 4);
+		$this->chunks[$index][$Y]{(int) ($aY + ($aX << 5) + ($aZ << 9))} = chr($block);
+		if(!isset($this->chunkChange[$index][$Y])){
+			$this->chunkChange[$index][$Y] = 1;
+		}else{
+			++$this->chunkChange[$index][$Y];
+		}
+		$this->chunkChange[$index][-1] = true;
+		return true;
+	}
+	
+	public function getBlockDamage($x, $y, $z){
+		$X = $x >> 4;
+		$Z = $z >> 4;
+		$Y = $y >> 4;
+		$index = $this->getIndex($X, $Z);
+		$aX = $x - ($X << 4);
+		$aZ = $z - ($Z << 4);
+		$aY = $y - ($Y << 4);
+		$m = ord($this->chunks[$index][$Y]{(int) (($aY >> 1) + 16 + ($aX << 5) + ($aZ << 9))});
+		if(($y & 1) === 0){
+			$m = $m & 0x0F;
+		}else{
+			$m = $m >> 4;
+		}
+		return $m;		
+	}
+	
+	public function setBlockDamage($x, $y, $z, $damage){
+		$X = $x >> 4;
+		$Z = $z >> 4;
+		$Y = $y >> 4;
+		$damage &= 0x0F;
+		if($X >= 32 or $Z >= 32 or $Y >= $this->levelData["height"] or $y < 0){
+			return false;
+		}
+		$index = $this->getIndex($X, $Z);
+		$aX = $x - ($X << 4);
+		$aZ = $z - ($Z << 4);
+		$aY = $y - ($Y << 4);
+		$mindex = (int) (($aY >> 1) + 16 + ($aX << 5) + ($aZ << 9));
+		$old_m = ord($this->chunks[$index][$Y]{$mindex});
+		if(($y & 1) === 0){
+			$m = ($old_m & 0xF0) | $meta;
+		}else{
+			$m = ($meta << 4) | ($old_m & 0x0F);
+		}
+
+		if($old_m != $m){
+			$this->chunks[$index][$Y]{$mindex} = chr($m);
+			if(!isset($this->chunkChange[$index][$Y])){
+				$this->chunkChange[$index][$Y] = 1;
+			}else{
+				++$this->chunkChange[$index][$Y];
+			}
+			$this->chunkChange[$index][-1] = true;
+			return true;
+		}
+		return false;
+	}
+
 	public function getBlock($x, $y, $z){
 		$X = $x >> 4;
 		$Z = $z >> 4;
@@ -322,10 +407,8 @@ class PMFLevel extends PMF{
 		$aX = $x - ($X << 4);
 		$aZ = $z - ($Z << 4);
 		$aY = $y - ($Y << 4);
-		$bindex = (int) ($aY + ($aX << 5) + ($aZ << 9));
-		$mindex = (int) (($aY >> 1) + 16 + ($aX << 5) + ($aZ << 9));
-		$b = ord($this->chunks[$index][$Y]{$bindex});
-		$m = ord($this->chunks[$index][$Y]{$mindex});
+		$b = ord($this->chunks[$index][$Y]{(int) ($aY + ($aX << 5) + ($aZ << 9))});
+		$m = ord($this->chunks[$index][$Y]{(int) (($aY >> 1) + 16 + ($aX << 5) + ($aZ << 9))});
 		if(($y & 1) === 0){
 			$m = $m & 0x0F;
 		}else{
diff --git a/src/world/Level.php b/src/world/Level.php
index 1d8605c16..497ce8b86 100644
--- a/src/world/Level.php
+++ b/src/world/Level.php
@@ -20,8 +20,8 @@
 */
 
 class Level{
-	public $entities, $tiles, $blockUpdates, $nextSave, $players = array();
-	private $level, $time, $startCheck, $startTime, $server, $name, $usedChunks, $changedBlocks, $changedCount;
+	public $entities, $tiles, $blockUpdates, $nextSave, $players = array(), $level;
+	private $time, $startCheck, $startTime, $server, $name, $usedChunks, $changedBlocks, $changedCount;
 	
 	public function __construct(PMFLevel $level, Config $entities, Config $tiles, Config $blockUpdates, $name){
 		$this->server = ServerAPI::request();
@@ -263,6 +263,11 @@ class Level{
 		$this->nextSave = microtime(true) + 45;
 	}
 	
+	public function getBlockRaw(Vector3 $pos){
+		$b = $this->level->getBlock($pos->x, $pos->y, $pos->z);
+		return BlockAPI::get($b[0], $b[1], new Position($pos->x, $pos->y, $pos->z, $this));
+	}
+	
 	public function getBlock(Vector3 $pos){
 		if(!isset($this->level) or ($pos instanceof Position) and $pos->level !== $this){
 			return false;
@@ -272,9 +277,6 @@ class Level{
 	}
 	
 	public function setBlockRaw(Vector3 $pos, Block $block, $direct = true, $send = true){
-		if(!isset($this->level)){
-			return false;
-		}
 		if(($ret = $this->level->setBlock($pos->x, $pos->y, $pos->z, $block->getID(), $block->getMetadata())) === true and $send !== false){
 			if($direct === true){
 				$this->server->api->player->broadcastPacket($this->players, MC_UPDATE_BLOCK, array(