Thread: what is this error, and how to fix?

last thing i edited..

Code:

	public void followPlayer(int i, int playerId) {
		if (Server.playerHandler.players[playerId] == null) {
			return;
		}
		if (Server.playerHandler.players[playerId].respawnTimer > 0) {
			npcs[i].facePlayer(0);
			npcs[i].randomWalk = true; 
	      	npcs[i].underAttack = false;	
			return;
		}
		
		int playerX = Server.playerHandler.players[playerId].absX;
		int playerY = Server.playerHandler.players[playerId].absY;
		npcs[i].randomWalk = false;
boolean canwalk = true;
		if((npcs[i].spawnedBy > 0) || ((npcs[i].absX < npcs[i].makeX + Config.NPC_FOLLOW_DISTANCE) && (npcs[i].absX > npcs[i].makeX - Config.NPC_FOLLOW_DISTANCE) && (npcs[i].absY < npcs[i].makeY + Config.NPC_FOLLOW_DISTANCE) && (npcs[i].absY > npcs[i].makeY - Config.NPC_FOLLOW_DISTANCE))) {
			if(npcs[i].heightLevel == Server.playerHandler.players[playerId].heightLevel) {
				if(Server.playerHandler.players[playerId] != null && npcs[i] != null) {
					if(playerY < npcs[i].absY) {
						npcs[i].moveX = GetMove(npcs[i].absX, playerX);
						npcs[i].moveY = GetMove(npcs[i].absY, playerY+1);

if(WorldMap.isWalkAble(npcs[i].heightLevel, npcs[i].absX, npcs[i].absY, npcs[i].absX-npcs[i].moveX, npcs[i].absY) == false)
canwalk = false;
					} else if(playerY > npcs[i].absY) {
						npcs[i].moveX = GetMove(npcs[i].absX, playerX);
						npcs[i].moveY = GetMove(npcs[i].absY, playerY-1);
if(WorldMap.isWalkAble(npcs[i].heightLevel, npcs[i].absX, npcs[i].absY, npcs[i].absX-npcs[i].moveX, npcs[i].absY) == false)

canwalk = false;
					} else if(playerX < npcs[i].absX) {
						npcs[i].moveX = GetMove(npcs[i].absX, playerX+1);
						npcs[i].moveY = GetMove(npcs[i].absY, playerY);
if(WorldMap.isWalkAble(npcs[i].heightLevel, npcs[i].absX, npcs[i].absY, npcs[i].absX-npcs[i].moveX, npcs[i].absY) == false)
canwalk = false;
					} else if(playerX > npcs[i].absX)  {
						npcs[i].moveX = GetMove(npcs[i].absX, playerX-1);
						npcs[i].moveY = GetMove(npcs[i].absY, playerY);
if(WorldMap.isWalkAble(npcs[i].heightLevel, npcs[i].absX, npcs[i].absY, npcs[i].absX-npcs[i].moveX, npcs[i].absY) == false)
canwalk = false;

					} else if(playerX == npcs[i].absX || playerY == npcs[i].absY) {
						int o = Misc.random(3);
						switch(o) {
							case 0:
							npcs[i].moveX = GetMove(npcs[i].absX, playerX);
							npcs[i].moveY = GetMove(npcs[i].absY, playerY+1);
if(WorldMap.isWalkAble(npcs[i].heightLevel, npcs[i].absX, npcs[i].absY, npcs[i].absX-npcs[i].moveX, npcs[i].absY) == false)
canwalk = false;
				
							break;
							
							case 1:
							npcs[i].moveX = GetMove(npcs[i].absX, playerX);
							npcs[i].moveY = GetMove(npcs[i].absY, playerY-1);
if(WorldMap.isWalkAble(npcs[i].heightLevel, npcs[i].absX, npcs[i].absY, npcs[i].absX-npcs[i].moveX, npcs[i].absY) == false)
canwalk = false;
							break;
							
							case 2:
							npcs[i].moveX = GetMove(npcs[i].absX, playerX+1);
							npcs[i].moveY = GetMove(npcs[i].absY, playerY);
if(WorldMap.isWalkAble(npcs[i].heightLevel, npcs[i].absX, npcs[i].absY, npcs[i].absX-npcs[i].moveX, npcs[i].absY) == false)
canwalk = false;
							break;
							
							case 3:
							npcs[i].moveX = GetMove(npcs[i].absX, playerX-1);
							npcs[i].moveY = GetMove(npcs[i].absY, playerY);
if(WorldMap.isWalkAble(npcs[i].heightLevel, npcs[i].absX, npcs[i].absY, npcs[i].absX-npcs[i].moveX, npcs[i].absY) == false)
canwalk = false;
							break;
						}	
					}
if(WorldMap.isWalkAble(npcs[i].heightLevel, npcs[i].absX, npcs[i].absY, npcs[i].absX-npcs[i].moveX, npcs[i].absY) == false)
canwalk = false;
	if(canwalk == true)
		      		npcs[i].getNextNPCMovement(i);                                              
		      		npcs[i].updateRequired = true;
				}	
			}
if(WorldMap.isWalkAble(npcs[i].heightLevel, npcs[i].absX, npcs[i].absY, npcs[i].absX-npcs[i].moveX, npcs[i].absY) == false)
canwalk = false;
		} else {
	if(canwalk == true)
			npcs[i].facePlayer(0);
			npcs[i].randomWalk = true; 
	      	npcs[i].underAttack = false;	
		}
	}

its packet == 126