WanderScript

package wow.server.net.game.system.ai;

import java.util.ArrayList;
import java.util.LinkedList;
import java.util.Random;

import wow.net.packet.world.PacketGObject;
import wow.server.net.WoWServer;

public class WanderScript extends Script {

    private float movementTime, idleTime, speed;

    private boolean isRunning = false;
    private boolean shouldMove = false;
    private boolean shouldIdle = true;

    private long lastTimer;

    private int i = 0;

    private Random rand;
    private boolean isRandSet = false;
    private int direction = -1;

    @Override
    public void setScriptSettings(ArrayList<String> args) {
        movementTime = Float.valueOf(args.get(0));
        idleTime = Float.valueOf(args.get(1));
        speed = Float.valueOf(args.get(2));
    }

    @Override
    public void start() {
        if (isRunning)
            return;
        isRunning = true;
        lastTimer = System.currentTimeMillis();
        rand = new Random();
    }

    @Override
    public void stop() {
        isRunning = false;
    }

    @Override
    public void run() {
        if (isRunning) {
            if (System.currentTimeMillis() - lastTimer >= 1000) {
                lastTimer += 1000;
                i += 1000;
            }

            if (shouldIdle) {
                if (isRandSet) isRandSet = false;
                if (i >= idleTime * 1000) {
                    i = 0;
                    shouldIdle = false;
                    shouldMove = true;
                }
            }

            if (shouldMove) {
                if (!isRandSet)
                    direction = getRandomDirection();
                moveEntity(); // TODO: implement bounds to stop them from moving all over the map. (using tiledmap)
                PacketGObject gObjectUpdate = new PacketGObject();
                gObjectUpdate.ID = super.entityInstance.getId();
                gObjectUpdate.InstanceID = super.entityInstance.getInstanceId();
                gObjectUpdate.X = super.entityInstance.getX();
                gObjectUpdate.Y = super.entityInstance.getY();
                gObjectUpdate.Direction = direction;
                gObjectUpdate.State = 1;
                WoWServer.getWorldServer().sendToAllUDP(gObjectUpdate);
                if (i >= movementTime * 1000) {
                    i = 0;
                    shouldIdle = true;
                    shouldMove = false;
                }
            }
        }
    }

    private void moveEntity() {
        switch (direction) {
        case 0:
            super.entityInstance.setY(super.entityInstance.getY() - speed);
            break;
        case 1:
            super.entityInstance.setY(super.entityInstance.getY() + speed);
            break;
        case 2:
            super.entityInstance.setX(super.entityInstance.getX() + speed);
            break;
        case 3:
            super.entityInstance.setX(super.entityInstance.getX() - speed);
            break;
        }
    }

    private int getRandomDirection() {
        isRandSet = true;
        return rand.nextInt(4);
    }

    @Override
    public ArrayList<String> getScriptSettings() {
        ArrayList<String> result = new ArrayList<String>();
        result.add(String.valueOf(movementTime));
        result.add(String.valueOf(idleTime));
        result.add(String.valueOf(speed));
        return result;
    }
}