Game Help

annmo

I'm doing the game project of spaceship moving around the asteroids. The problem is that I can't figure out how make the collision work when the spaceship touches the asteroid and it will say Game Over. Here are the codes. Don't give me some complicated codes. I'm new to this. Thanks! :)

// Main class

PFont font;

Star s1;
Spaceship sP1; Asteroids a1;

void setup() { size(900, 500); background(0); colorMode(HSB);

s1 = new Star();
sP1 = new Spaceship(); a1 = new Asteroids(); }

void draw() { background(0); s1.display(); sP1.display(); a1.move(); a1.display();

if (hit(s)) { println("Game Over");
youLose(); } }

void youLose() { font = loadFont("AdobeFanHeitiStd-Bold-48.vlw"); textFont(font); text("Game Over! Click Mouse to Restart", 26, 30, 260, 200); } void reset() { setup(); }

void mousePressed() { reset(); }

/////////////////////////////////////////////////////// // Asteroids class

class Asteroids { float diam;
float xPos;
float yPos; float xDir = random(-5, -1);

Asteroids() { xPos = random(width);
yPos = random(height); diam = random(30.0, 60.0);
}

void move() { xPos = xPos + xDir; if (xPos < 0) { xPos = width; } }

void display() { fill(#FF0000); stroke(#000066); ellipse(xPos, yPos, diam, diam); }

boolean hit(Spaceship s) { float distance = dist (s.xPos, s.yPos, this.xPos, this.yPos); if (distance < (s.diam + this.diam) / 2.0) { return true; } else { return false; } } }

_vk

A simple instruction then... :)

Leave an empty line after, one before, highlight your code, hit ctrl-o.

Code formmated for the forum so people can read it.

;)

Chrisir

just loop over the asteroids

when dist() (see reference) between this asteroid position (plus radius) and ship (dito) is < 120 HIT

assuming that the asteroid is more or less round but it should be accurate enough

https://www.processing.org/reference/

annmo

I got everything worked but now I am trying to figure out how to make lots of astroids. I only made one asteroid but I want more.

``//Main class``

    PFont font;

    Star s1;          
    Spaceship sP1;
    Asteroids [] aField;

    /*
    Asteroids a1;
    */

    void setup()
    {
      size(900, 500);
      background(0);
      colorMode(HSB);

      s1 = new Star();    
      sP1 = new Spaceship();
      //a1 = new Asteroids();
      aField = new Asteroids[15];
      for (int i = 0; i < aField.length; i++)
      {
        aField[i] = new Asteroids(random(1, random(1, 10)));
      }
    }

    void draw()
    {
      background(0);
      s1.display();
      sP1.move();
      sP1.display();
      //a1.move();
      //a1.display();
      if (aField.hit(sP1))
      {
        println("Game Over");  // Prints on the console window
        youLose();
        noLoop();
      }

    }

    void youLose()
    {
      println("font");
      font = loadFont("AdobeFanHeitiStd-Bold-48.vlw");
      textFont(font);
      text("Game Over Click Mouse to Restart", 75, 250, 200);
    }

    void reset() 
    {
      loop();
    }

    void mousePressed()
    {
      reset();
    }

    ////////////////////////////
    //Asteroids class

    class Asteroids
    {
      float diam;    // Diameter of ball
      float xPos;    // Location
      float yPos;
      float xDir = random(-5, -1);

      Asteroids()
      {
        xPos = width;    // Middle of screen
        yPos = random(height);
        diam = random(30.0, 60.0);    // Scaled of x position
      }

      Asteroids(float d)
      {
        xPos = width;    // Middle of screen
        yPos = random(height);
        diam = d;    // Scaled of x position
      }

      void move()
      {
        xPos = xPos + xDir;
        if (xPos < 0)
        {
          xPos = width;
        }
      }

      void display()
      {
        fill(#FFF000);
        stroke(#000066);
        ellipse(xPos, yPos, diam, diam);
      }

      boolean hit(Spaceship s)
      {
        float distance = dist (s.xPos, s.yPos, this.xPos, this.yPos);
        println(distance);
        if (distance < (s.diam + this.diam) / 2.0)
        {
          return true;
        } 
        else
        {
          return false;
        }
      }
    }

Chrisir

well you set up 15 asteroids in setup()

just display them in draw() with a for loop and check the collision for each as well

annmo

It works fine in the setup. But I am trying to figure out how to fix the error in "if (aField.hit(sP1))". It might be something different but I don't know. I made some changes.

void draw()
{
  background(0);

  if (aField.hit(sP1))
  {
    aField.move();
    aField.display();
    println("Game Over");  // Prints on the console window
    youLose();
    noLoop();
  }

  s1.display();
  sP1.move();
  sP1.display();
  //a1.move();
  //a1.display();
}

Chrisir

??

you wrote

how to make lots of astroids.

answer:

• just display your 15 asteroids from setup() in draw() with a for loop and check the collision for each as well

Chrisir

 for (int i = 0; i < aField.length; i++)
      {
        aField[i].display(); 

        ................

Chrisir

if (aField[0].hit(sP1))

or later with the for-loop

if (aField[i].hit(sP1))

annmo

Ahh that's what I want! Thank you for helping!