package coreGame;

import javax.microedition.lcdui.*;
import java.util.Random;
import com.ckrocket.gui.*;
import menu.*;
import javax.microedition.midlet.MIDlet;

public class CoreGame extends TouchCanvas implements Runnable{

int width, height, sleep;
int score;
Snake snake;
Bait bait;
KeyPad keypad;
PauseMenu pause;
Display display;
MIDlet main;
long startTime;
Thread game;
Image gameImage;

 public CoreGame( MIDlet main) {
  setFullScreenMode(true);
  game = new Thread(this);
  sleep = 250;
  score = 0;
  width = getWidth();
  height = getHeight();
  snake = new Snake();
  keypad = new KeyPad(width, height, this);
  this.main = main;
  pause = new PauseMenu("pause", main, this);
  game.start();
  display = Display.getDisplay(main);
  gameImage = Image.createImage(240, 320);
  bait = new Bait(random(0, gameImage.getWidth(), 10), random(0, gameImage.getHeight(), 10));

  snake.create((width/2) - 5, (height / 2) - 5);
  snake.direction = Snake.UP;
 }
 public void paint(Graphics g) {
  g.setColor(255, 255, 255);
  g.fillRect(0, 0, width, height);
  g.drawImage(resize(gameImage, width, height - 60), 10, 10, 0);
  keypad.paint(g);
//draw score
  g.setColor(0, 0, 0);
  g.fillRect(0, 0, width, 10);
  g.setColor(255, 255, 255);
  g.drawString("your score : " + score, 0, 2, 17);
 }
 public void run(){
  while(true){
   gameProcess();
   keyListner();
   if(sleep(sleep))snake.moving();
   paintGame(gameImage.getGraphics());
   repaint();
  }
 }
 private void paintGame(Graphics g){
  snake.paintSnake(g);
  bait.paint(g);
 }
 private void gameProcess(){
  PartSnake localPart = (PartSnake)(snake.snake.elementAt(0));
  int x = localPart.x;
  int y = localPart.y;
  if(x == bait.x && y == bait.y){
   score++;
   snake.add();
   bait = new Bait(random(0, gameImage.getWidth(), 10), random(0, gameImage.getHeight(), 10));
  }
 }
 public void keyListner(){
  if(keypad.keyText.equals("up") ){
   snake.direction = Snake.UP;
  }
  if(keypad.keyText.equals("down") ){
   snake.direction = Snake.DOWN;
  }
  if(keypad.keyText.equals("left") ){
   snake.direction = Snake.LEFT;
  }
  if(keypad.keyText.equals("right") ){
   snake.direction = Snake.RIGHT;
  }
  if(keypad.keyText.equals("pause") ){
   SetPaint.set(main, pause);
  }
 }
 public static int random(int min, int max, int dim) {
  return min + new Random().nextInt((int)((max-min)/dim)) * dim;
 }
 public boolean sleep(long mills){
  if(startTime == 0)startTime = System.currentTimeMillis();
  long thisTime = System.currentTimeMillis();
  long lastTime = thisTime - startTime;
  if(lastTime >= mills){
   startTime = System.currentTimeMillis();
   lastTime = 0;
   return true;
  }else{
   return false;
  }
 }
}