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Java Snake

By chain, in Games

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chain Grand Master

chain

Posted
  • Administrators
Posted

meh just a snake game....i made this like a year ago when i was just learning java 😜

i was bored and saw no one has posted one so i figure i'll post the first one. 🙂

*known bugs:

  1. can't restart without refreshing page
  2. rapid movement causes snake to turn back into self

URL: http://picklecodes.co.cc/Games/Snake/

  

import java.awt.*;
import java.applet.*;
import java.awt.event.*;
import java.util.*;

public class Snake extends Applet implements KeyListener,  Runnable
{
  // The object we will use to write with instead of the standard screen graphics
  Graphics bufferGraphics;
  // The image that will contain everything that has been drawn on
  // bufferGraphics.
  Image offscreen;
  // To get the width and height of the applet.
  Dimension dim;
  Random r=new Random();
  Level level=new Level();

  boolean playedLastGame=false;
  int bodies=2;
  int lives=3;
  int countApple=0;
  Wall[] w = new Wall[500];
  Section[] s=new Section[300];
  Apple[] a=new Apple[10];
  MovePoint[] mp=new MovePoint[100];

  //credits
  String version = "1.0";
  boolean game,puase;
  boolean gameOver;
  int GameOverTimer=0;
  int x,y;

  //timer
  Thread t,t1;

  public void start(){
  t = new Thread(this);
  t.start();
}

public void run(){
    t1 = Thread.currentThread();
    while(t1 == t){
        updateSpace();
        try{
             t1.sleep(100);    
            }catch(InterruptedException e){}
        }
}

public void init() {
  // We'll ask the width and height by this
  dim = getSize();
  setBackground(Color.black);
  // Create an offscreen image to draw on
  // Make it the size of the applet, this is just perfect larger
  // size could slow it down unnecessary.
  offscreen = createImage(dim.width,dim.height);
  // by doing this everything that is drawn by bufferGraphics
  // will be written on the offscreen image.
  bufferGraphics = offscreen.getGraphics(); 

  for (int i=0; i < s.length; i++) { s[i]=null; }
  for (int i=0; i < w.length; i++) { w[i]=null; }
  for (int i=0; i < a.length; i++) { a[i]=null; }
  for (int i=0; i < mp.length; i++) { mp[i]=null; }
  level.setLevel(0);

  this.setFocusable(true);
  this.requestFocus();
 addKeyListener(this);
 game=false;
}

public void reinit() 
{
int tempGoal = level.getGoal();
level.reset();
level.setGoal(tempGoal + 5);
bodies=2;
countApple=0;

  for (int i=0; i < s.length; i++) { s[i]=null; }
  for (int i=0; i < w.length; i++) { w[i]=null; }
  for (int i=0; i < a.length; i++) { 
            a[i]=new Apple(); 
            a[i].init();
        for (int ii=0; ii < w.length; ii++) {
            if (w[ii] != null) {
while (w[ii].x == a[i].x && w[ii].y == a[i].y) { a[i].init(); ii=0; }
}
}

    }
  for (int i=0; i < mp.length; i++) { mp[i]=null; }
  s[0]=new Section();
  s[1]=new Section();
  s[2]=new Section();
  s[0].init(250,250,"right");
  s[1].init(245,250,"right");
  s[2].init(240,250,"right");
  s[0].setHead(true);
        puase=true;
}

public boolean updateSpace() {
  // Wipe off everything that has been drawn before
  // Otherwise previous drawings would also be displayed.
  bufferGraphics.clearRect(0,0,dim.width,dim.height);

if (game == false) {
if (gameOver == true) {
 bufferGraphics.setColor(Color.green);
 bufferGraphics.drawString("Game Over!",dim.width / 2 - 100,dim.height / 2);
 GameOverTimer++;
 if (GameOverTimer >= 10) { 
     gameOver=false;
     GameOverTimer=0;
    }
}
else {
 bufferGraphics.setColor(Color.green);
 bufferGraphics.drawString("Pickled Snake",dim.width / 2 - 100,dim.height / 2);
 bufferGraphics.drawString("Press Space to Start ",dim.width / 2 - 100,dim.height / 2 + 15);
}
}
else {

if (puase != true) {
  level.time+=0.1;
  level.time=Round(level.time,1);
}

  for (int i=0; i < s.length; i++) {
    if (s[i] != null) {
        if (puase != true) { s[i].move(); }
      //check collsion with apples
      if (bodies <= s.length) {
        for (int ii=0; ii < a.length; ii++) {
            if (a[ii] != null) {
          if (s[0].x == a[ii].x && s[0].y == a[ii].y) {   
            int X=s[bodies].x;
            int Y=s[bodies].y;
            String D=s[bodies].direction;
            bodies++;
            if (D == "up") {
              s[bodies]=new Section();
              s[bodies].init(X, Y+5, D);
            }
            if (D == "down") {
              s[bodies]=new Section();
              s[bodies].init(X, Y-5,  D);
            }
             if (D == "right") {
              s[bodies]=new Section();
              s[bodies].init(X-5, Y, D);
            }
             if (D == "left") {
              s[bodies]=new Section();
              s[bodies].init(X+5, Y, D);
            }
                 a[ii].init();
                  for (int iii=0; iii < w.length; iii++) {
            if (w[iii] != null) {
         while (w[iii].x == a[ii].x && w[iii].y == a[ii].y) { a[ii].init(); iii=0; }
    }
}
              countApple++;
              break;
          }
        }
       }
      }
       //check if snake section collides with self

              if (i != 0 && s[0].x == s[i].x && s[0].y == s[i].y || s[0].x < 0 || s[0].y < 0 ||  s[0].x > dim.width  || s[0].y > dim.height) { 
                  LoseLive();
                  return false;
            }

 //check if snake section is over move point if so then move in the direction told by move point
      for (int ii=0; ii < mp.length; ii++) {
        if (mp[ii] != null) {
          if (s[i].x == mp[ii].x && s[i].y == mp[ii].y) { 
            s[i].direction=mp[ii].direction;
            if (bodies == i) { mp[ii]=null; }
          }
        }
      }
      s[i].Paint(bufferGraphics);
    }
  }
          //paint walls
               for (int i=0; i < w.length; i++) { 
                   if (w[i] != null) {
                     //check if snake section collides with a wall
                   if (s[0].x == w[i].x && s[0].y == w[i].y) {
                     LoseLive();
                     return false;
                    } 
                   w[i].Paint(bufferGraphics);
                }
                }
  for (int i=0; i < a.length; i++) {
    a[i].Paint(bufferGraphics);
  }

    //check the level goal
            if (countApple >= level.getGoal()) { 
                level.setLevel(level.getLevel() + 1);
                reinit();
            }

  bufferGraphics.setColor(Color.orange);
  bufferGraphics.drawString("Time: "+ level.time,10,15);
  bufferGraphics.drawString("Lives: "+ lives,80,15);
  bufferGraphics.drawString("Level: "+ level.getLevel(),(dim.width / 2) - 75,15);
  bufferGraphics.drawString("Goal: "+ level.getGoal(),dim.width - 100,15);
  bufferGraphics.drawString("Apples:  "+ countApple,dim.width - 100,30);

  if (puase == true) {
bufferGraphics.setColor(Color.green);
bufferGraphics.drawString("Puase ",dim.width / 2 ,dim.height / 2);
}

}

 repaint();
 return true;
}
/** this controls the lives */
public void LoseLive() { 
lives--;
if (lives <= 0) { EndGame(); }
reinit();
}
/** this ends the game */
public void EndGame() { 
resetGame();
gameOver=true;
game=false; 
}
/** this resets the game and destroys everything not being used */
public void resetGame() {
level.reset();
lives=3;
 for (int i=0; i < s.length; i++) { s[i]=null; }
  for (int i=0; i < w.length; i++) { w[i]=null; }
  for (int i=0; i < a.length; i++) { a[i]=null; }
  for (int i=0; i < mp.length; i++) { mp[i]=null; }
}
//paint
public void paint(Graphics g) 
{

  //credits
  bufferGraphics.setColor(Color.orange);
  bufferGraphics.drawString("Java Snake game "+ version,10,470);
  bufferGraphics.drawString("By: Pickle",10,480);

  // draw the offscreen image to the screen like a normal image.
  // Since offscreen is the screen width we start at 0,0.
  g.drawImage(offscreen,0,0,this); 
}
public void update(Graphics g)  { paint(g); } 

//key events
public void keyPressed(KeyEvent e ) { 
if (puase != true) {
  switch (e.getKeyCode()) {
    case KeyEvent.VK_LEFT:  
    if (s[0].direction == "left" || s[0].direction == "right") {}
else {
      s[0].direction="left";
      for (int i=0; i < mp.length; i++) {
        if (mp[i] == null) {
          mp[i]=new MovePoint();
          mp[i].init(s[0].x,s[0].y,"left");
          break;
        }
      }
    }
    break;
    case KeyEvent.VK_RIGHT:
    if (s[0].direction == "left" || s[0].direction == "right") {}
else {
      s[0].direction="right";
      for (int i=0; i < mp.length;  i++) {
              if (mp[i] == null) {
           mp[i]=new MovePoint();
          mp[i].init(s[0].x,s[0].y,"right");
          break;
        }
      }
    }
    break;
    case KeyEvent.VK_UP: 
    if (s[0].direction == "up" || s[0].direction == "down") {}
else {
      s[0].direction="up";
      for (int i=0; i < mp.length;  i++) {
              if (mp[i] == null) {
          mp[i]=new MovePoint();
          mp[i].init(s[0].x,s[0].y,"up");
          break;
        }
      }
    }
    break;
    case KeyEvent.VK_DOWN:  
    if (s[0].direction == "up" || s[0].direction == "down") {}
else {
      s[0].direction="down";
      for (int i=0; i < mp.length;  i++) {
              if (mp[i] == null) {
          mp[i]=new MovePoint();       
          mp[i].init(s[0].x,s[0].y,"down");
          break;
        }
      }
    }
    break;
    case KeyEvent.VK_SPACE:  
    if (game == false) {
    game=true; 
    reinit();
}
    break;
  }
}

   if (e.getKeyChar() == 'p') {
    if (puase == true) { puase=false; }
else { puase=true; }
}

}

public void keyReleased( KeyEvent e ) { }
public void keyTyped( KeyEvent e ) {}

//for my rounding needs
public static float Round(float Rval, int Rpl) {
  float p = (float)Math.pow(10,Rpl);
  Rval = Rval * p;
  float tmp = Math.round(Rval);
  return (float)tmp/p;
}

/**
 * records Level Info
 */
private class Level {
int level = 0;
int goal=0;
float time = 0.0f;
public Level() { }

public void reset() {
goal=0;
time = 0.0f;
}
public void setLevel(int l) { level=l; }
public void setGoal(int g) { goal=g; }
public int getLevel() { return level; }
public int getGoal() { return goal; }
}

/**
*  record snake sections
*/
private class Section {
  int x,y;
  String direction=null;
  boolean head=false;
  public Section() { }
  public void init(int X, int Y,  String B) {
    direction=B;
    x=X;
    y=Y;
  }
  public void setHead(boolean h) { head=h; }
  public void move() {
    if (direction == "up") { y-=5; }
    if (direction == "down") { y+=5; }
    if (direction == "right") { x+=5; }
    if (direction == "left") { x-=5; }
  }
  public void Paint(Graphics g) {
      g.setColor(Color.green);
      g.fillOval(x,y,5,5);
      if (head == true) { 
      g.setColor(Color.black);
      g.fillOval(x - 2,y - 2,2,2);
      g.fillOval(x - 4,y - 2,2,2);
    }
  }
  //end class section
}

/**
* record Move point
*/
private class MovePoint {
  int x,y;
  String direction;
  public MovePoint() {  }
  public void init(int X, int Y, String B) {
    direction=B;
    x=X;
    y=Y;
  }
  //end class section
}
/**
*Draw Wall Randomly
*/
private class Wall  {
  int x,y;
  public Wall() { }
  public void init(int X, int Y) { 
    x=X - (X % 5);
    y=Y - (Y % 5);
  }
  public void Paint(Graphics g) {
      g.setColor(Color.gray);
      g.fillOval(x,y,5,5);
  }
  //end class Wall
}

/**
*Draw Apple Randomly
*/
private class Apple {
  int x,y;
  public Apple() { }
  public void init() { 
    int rand=r.nextInt(dim.width);
    x=rand - (rand % 5);
    rand=r.nextInt(dim.height);
    y=rand - (rand % 5);
  }
  public void Paint(Graphics g) {
      g.setColor(Color.red);
      g.fillOval(x,y,5,5);
  }
  //end class apple
}

//end
}

 

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