SnakeGame

package javagame;

import javax.management.timer.Timer;
import java.util.Random;
import org.newdawn.slick.*;
import org.newdawn.slick.geom.Polygon;
import org.newdawn.slick.state.*;


public class Play extends BasicGameState{
    public float p1x1=200;
    public float p1y1=160;
    public int facing=0; //0=north 90=east 180=south 270=west
    public int hasEaten=0;
    public int body[][]={{10,100},{20,300}};
    public boolean end=false;
    public String locX,locY;
    public String ft,rot;
    public boolean foodOnField=false;
    public Random random = new Random(System.nanoTime());
    public int foodX ;
    public int foodY ;
    public int score=0;
    public int bombX;
    public int bombY;
    public Polygon foodPoly;
    public Polygon snakePoly;
    public Polygon bombPoly;
    Image pea;
    Image keha;
    Image food,food2,food3,food4;
    Image bomb;
    public int rn= 0;

    // 640 360

    public Play(int state){
    }

    public void init(GameContainer gc, StateBasedGame sbg) throws SlickException{
        pea = new Image("res/uss_pea.png");
        keha = new Image("res/uss_keha.png");
        food = new Image("res/food.png");
        food2 = new Image("res/food2.png");
        food3 = new Image("res/food3.png");
        food4 = new Image("res/food4.png");
        bomb = new Image("res/bomb.png");
        bombX=20*random.nextInt(31);
         bombY=20*random.nextInt(17);
         foodX=20*random.nextInt(31);
         foodY=20*random.nextInt(17);
        pea.setCenterOfRotation(15, 15);
        keha.setCenterOfRotation(15, 15);
        foodPoly= new Polygon();
                foodPoly.addPoint(foodX,foodY);
                foodPoly.addPoint(foodX+20,foodY);
                foodPoly.addPoint(foodX+20,foodY+20);
                foodPoly.addPoint(foodX,foodY+20);
        snakePoly= new Polygon();
                snakePoly.addPoint(p1x1,p1y1);
                snakePoly.addPoint(p1x1+20,p1y1);
                snakePoly.addPoint(p1x1+20,p1y1+20);
                snakePoly.addPoint(p1x1,p1y1+20);
        bombPoly= new Polygon();
                bombPoly.addPoint(bombX,bombY);
                bombPoly.addPoint(bombX+20,bombY);
                bombPoly.addPoint(bombX+20,bombY+20);
                bombPoly.addPoint(bombX,bombY+20);


    }

    public void render(GameContainer gc, StateBasedGame sbg, Graphics g) throws SlickException{
        pea.draw(p1x1, p1y1);
        pea.setRotation(facing);

        if(!foodOnField){
            rn = random.nextInt(3);
            }
        switch(rn){
                case 0:
                    food2.draw(foodX,foodY);
                break;
                case 1:
                    food3.draw(foodX,foodY);
                break;
                case 2:
                    food4.draw(foodX,foodY);
                break;
                default:
                    food.draw();
                break;
        }

        g.drawString(locX, 500, 10);
        g.drawString(locY, 500, 30);
        g.drawString(ft, 500, 20);
        g.drawString(rot, 500, 40);
        g.drawString(Integer.toString(score), 10, 10);
        bomb.draw(bombX,bombY);


    }
    public void update(GameContainer gc, StateBasedGame sbg, int delta)throws SlickException{
    locY="Y"+p1y1;
    locX="X"+p1x1;
    rot=facing+" deg";
    ft=""+snakePoly.intersects(foodPoly);
        updatePoly();
        Food(gc,delta);
        moveAuto(delta,gc,end);
        keyInAuto(gc,true);
        hitWall();
        collisionBad();
        bomb();


    }
    public int getID(){
        return 1;
    }
    private void moveAuto(int delta,GameContainer gc,boolean b){
        int s=20;
        Input input = gc.getInput();
        if(!b){
            if(input.isKeyDown(Input.KEY_SPACE)){
                s=40;
            }
            if(input.isKeyDown(Input.KEY_LCONTROL)){
                s=5;
            }


        if(facing==0){
        p1y1-=s*delta/300f;
        //wait(250);
        }else if(facing==90){
            p1x1+=s*delta/300f;
            //wait(250);
        }else if(facing==180){
            p1y1+=s*delta/300f;
            //wait(250);
        }else if(facing==270){
            p1x1-=s*delta/300f;

        }else if(facing<0||facing==360){
            if(facing==360){facing=0;}
            if(facing==-90){facing=270;}
            if(facing==-180){facing=180;}
            if(facing==-270){facing=90;}
        }else{
            System.out.println("Error moving snake");
        }
        }
    }
    private void keyInAuto(GameContainer gc,boolean b){
        Input input = gc.getInput();
        if(b){
        if(input.isKeyPressed(Input.KEY_LEFT)){
            facing=facing-90;

        }else if(input.isKeyPressed(Input.KEY_RIGHT)){
            facing=facing+90;
        }
        }
    }
    private void hitWall(){
        if(p1y1<=-20){p1y1=340;}
        if(p1y1>=380){p1y1=0;}
        if(p1x1<=-20){p1x1=620;}
        if(p1x1>=660){p1x1=0;}
    }
    private void Food(GameContainer gc,int delta){
        if(collisionDetected()){
             foodX=20*random.nextInt(31);
             foodY=20*random.nextInt(17);
             if(foodPoly.intersects(bombPoly))
             {foodX=20*random.nextInt(31);
             foodY=20*random.nextInt(17);}
             else{
                score=score+20;
            foodOnField=false;
            }
        }else{
            foodOnField=true;
        }
    }
    private void bomb(){
        if(collisionBad()){
            end=true;
             bombX=20*random.nextInt(31);
             bombY=20*random.nextInt(17);
             if(foodPoly.intersects(bombPoly))
             {bombX=20*random.nextInt(31);
             bombY=20*random.nextInt(17);
             }
        }
    }
    private boolean collisionDetected(){
        if(snakePoly.intersects(foodPoly)){
            return true;

        }else{
            return false;
        }
    }
    private boolean collisionBad(){
        if(snakePoly.intersects(bombPoly)){
        return true;
        }else{
            return false;
        }

    }
    private void updatePoly(){
        foodPoly.setCenterX(foodX+10);
        foodPoly.setCenterY(foodY+10);
        bombPoly.setCenterX(bombX+10);
        bombPoly.setCenterY(bombY+10);
        snakePoly.setCenterX(p1x1+10);
        snakePoly.setCenterY(p1y1+10);
        snakePoly.addPoint(p1x1,p1y1);
        snakePoly.addPoint(p1x1+20,p1y1);
        snakePoly.addPoint(p1x1+20,p1y1+20);
        snakePoly.addPoint(p1x1,p1y1+20);
        foodPoly.addPoint(foodX,foodY);
        foodPoly.addPoint(foodX+20,foodY);
        foodPoly.addPoint(foodX+20,foodY+20);
        foodPoly.addPoint(foodX,foodY+20);
        bombPoly.addPoint(bombX,bombY);
        bombPoly.addPoint(bombX+20,bombY);
        bombPoly.addPoint(bombX+20,bombY+20);
        bombPoly.addPoint(bombX,bombY+20);
    }



}