SittingTrait.java

package net.aufdemrand.denizen.npc.traits;

import net.aufdemrand.denizen.utilities.DenizenAPI;
import net.aufdemrand.denizen.utilities.Utilities;
import net.aufdemrand.denizen.utilities.debugging.dB;
import net.citizensnpcs.api.persistence.Persist;
import net.citizensnpcs.api.trait.Trait;
import net.minecraft.server.v1_6_R3.EntityHuman;
import net.minecraft.server.v1_6_R3.EntityPlayer;

import org.bukkit.Location;
import org.bukkit.craftbukkit.v1_6_R3.entity.CraftPlayer;
import org.bukkit.entity.EntityType;
import org.bukkit.event.EventHandler;
import org.bukkit.event.Listener;
import org.bukkit.event.block.BlockBreakEvent;

public class SittingTrait extends Trait implements Listener  {

    @Persist("sitting")
    private boolean sitting = false;

    @Persist("chair location")
    private Location chairLocation = null;

    EntityHuman eh = null;

    @Override
    public void run() {
        if (eh == null || chairLocation == null) return;
        if (!Utilities.checkLocation(npc.getBukkitEntity(), chairLocation, 1)) stand();
    }

    @Override
    public void onSpawn() {
        eh = ((CraftPlayer) npc.getBukkitEntity()).getHandle();
        if (sitting) sit();
    }

    // <--[action]
    // @Actions
    // sit
    //
    // @Triggers when the NPC sits down.
    //
    // @Context
    // None
    //
    // -->
    /**
     * Makes the NPC sit
     */
    public void sit() {
        DenizenAPI.getDenizenNPC(npc).action("sit", null);

        if (npc.getBukkitEntity().getType() != EntityType.PLAYER) {
            return;
        }

        ((EntityPlayer) eh).getDataWatcher().watch(0, Byte.valueOf((byte) 0x04));

        sitting = true;
        chairLocation = npc.getBukkitEntity().getLocation();
    }

    /**
     * Makes the NPC sit a the specified location
     *
     * @param location
     */
    public void sit(Location location) {
        DenizenAPI.getDenizenNPC(npc).action("sit", null);

        if (npc.getBukkitEntity().getType() != EntityType.PLAYER) {
            return;
        }

        /*
         * Teleport NPC to the location before
         * sending the sit packet to the clients.
         */
        eh.getBukkitEntity().teleport(location.add(0.5, 0, 0.5));
        dB.echoDebug("...NPC moved to chair");

        ((EntityPlayer) eh).getDataWatcher().watch(0, Byte.valueOf((byte) 0x04));

        sitting = true;
        chairLocation = location;
    }

    // <--[action]
    // @Actions
    // stand
    //
    // @Triggers when the NPC stands up.
    //
    // @Context
    // None
    //
    // -->
    /**
     * Makes the NPC stand
     */
    public void stand() {
        DenizenAPI.getDenizenNPC(npc).action("stand", null);


        ((EntityPlayer) eh).getDataWatcher().watch(0, Byte.valueOf((byte) 0x00));

        chairLocation = null;
        sitting = false;
    }

    /**
     * Checks if the NPC is currently sitting
     *
     * @return boolean
     */
    public boolean isSitting() {
        return sitting;
    }

    /**
     * Gets the chair the NPC is sitting on
     * Returns null if the NPC isnt sitting
     *
     * @return Location
     */
    public Location getChair() {
        return chairLocation;
    }


    /**
     * If someone tries to break the poor
     * NPC's chair, we need to stop them!
     *
     */
    @EventHandler(ignoreCancelled = true)
    public void onBlockBreak(BlockBreakEvent event) {
        if (chairLocation == null) return;
        if (event.getBlock().getLocation().equals(chairLocation)) {
            event.setCancelled(true);
        }
    }

    public SittingTrait() {
        super("sitting");
    }

}