package games;

import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import java.util.*;
 
/// A Visible that represents an opponent in the game --
/// a "Monster" that attacks the Player.
public class Monster extends Visible {
    protected int _radius = 4;

    /// Move the Monster according to internal rules:
    public boolean doAction(Game game) {
        if (move(game)) {
            attack(game.getPlayer());
            if (!isAlive()) {
                System.out.println(getClass().getName()+" runs away!");
                game.remove(this);
                return false;
            }
        }
        return true;
    }

    /// Move the Monster:
    public boolean move(Game game) {
        Player p = game.getPlayer();
        int deltaX=0;
        int deltaY=0;
        if (p.getX() > getX()) deltaX = 1; else deltaX = -1;
        if (p.getY() > getY()) deltaY = 1; else deltaY = -1;
        //System.out.println("Moving w/delta: "+Integer.toString(deltaX)+
        //                   ","+Integer.toString(deltaY));
        moveTo(getX()+deltaX, getY() + deltaY);
        boolean isHit = (Math.abs(p.getX() - getX()) < _radius) && 
                        (Math.abs(p.getY() - getY()) < _radius);
        return isHit;
    }

    // Reset to random location
    void reset(Game game) {
        moveTo((int)(Math.random()*game.getWidth()),
               (int)(Math.random()*game.getHeight()));
    }


    // Draw this Monster; default representation is fairly
    // boring.
    public void draw(Graphics g) {
        g.setColor(Color.red);
        g.fillRect(getX()-_radius,
                   getY()-_radius,
                   _radius*2,_radius*2);
    }

    protected int _maxDamage = 10;
    protected int _health = 20;
   
    boolean isAlive() {return _health > 0;}

    // Attack a player:
    public void attack(Player p) {
        int damageToPlayer = (int) ( Math.random() * _maxDamage );
        System.out.println(getClass().getName()+" does: "+Integer.toString(damageToPlayer)+
                           " damage to Player.");

        p.adjustHealth(-1 * damageToPlayer);
        
        int damageToMonster = p.calcAttackDamage();
        _health -= damageToMonster;
    }
}