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harrison.perry
harrison...

Need some help with a collision type problem in this very simple game!

in Programming Questions  •  3 years ago  
Simple Game, i want the ballto bounce of the rectangle, but for some reason(most likely obvious) it just floats pass :( here is the code and thank you for your help!!

Harrison.




Copy code
  2. float x = 400; // postion of the player
  3. float y = 193; //postion of player
  4. float speed = 10; // movement of player speed


  7. int size = 20;       // Width of the shape
  8. float xpos, ypos;    // Starting position of shape    

  10. float xspeed = 2.8;  // Speed of the shape
  11. float yspeed = 2.2;  // Speed of the shape

  13. int xdirection = 1;  // Left or Right
  14. int ydirection = 1;  // Top to Bottom
  15. int score = 50;

  17. void setup() 
  18. {
  19.   size(640, 200);
  20.   noStroke();
  21.   frameRate(30);
  22.   smooth();
  23.   // Set the starting position of the shape
  24.   xpos = width/2;
  25.   ypos = height/2;
  26. }

  28. void draw() 
  29. {
  30.   background(102);
  31.   moveright();
  32.   moveleft();
  33.   display();
  34.   collosions();
  35.   
  36.   // Update the position of the shape
  37.  // xpos = xpos + ( xspeed * xdirection );
  38.  // ypos = ypos + ( yspeed * ydirection );
  39.   
  40.   // Test to see if the shape exceeds the boundaries of the screen
  41.   // If it does, reverse its direction by multiplying by -1
  42.   if (xpos > width-size || xpos < 0) {
  43.     xdirection *= -1;
  44.   }
  45.   if (ypos > height-size) {
  46.   //  ydirection *= -1;
  47.     score += 1;
  48.     xspeed += 0.1;
  49.     yspeed += 0.1;
  50.   }
  51.     if (score == 100)  {
  52.       print("you win!");
  53.       exit(); 
  54.         
  55.   }
  56.   
  57.   if ( ypos < 0) {
  58.      ydirection *= -1;
  59.      score -= 1;
  60.  }
  61.      if (score == 0){
  62.        
  63.        print("game over");
  64.        exit();
  65.        
  66.      }
  67.      

  69.   // Draw the shape
  70.   float col= random(255);
  71.   float col2 = random(255);
  72.   float col3 = random(255);
  73.   fill(col, col2, col3);
  74.   ellipse(xpos+size/2, ypos+size/2, size, size);
  75.   print(score);
  76. }

  78. void moveright() {
  79.   if (keyPressed) {
  80.     if (key == 'd'){
  81.       x = x+speed;
  82.     }
  83.   }
  84.   if ((x + 20) < 0) {
  85.     x = 600;
  86. }
  87. }

  89. void moveleft() {
  90.   if (keyPressed){
  91.     if (key == 'a'){
  92.       x = x - speed;
  93.     }
  94.   }
  95.   if ((x + 20) > 640){
  96.     x = 40;
  97.   }
  98. }
  99. void display() {
  100.   fill(255);
  101.   rect(x,y,40,7);
  102. }

  104. void collosions() {
  105.   xpos = xpos + ( xspeed * xdirection );
  106.   ypos = ypos + ( yspeed * ydirection );
  107.   if(xpos == x){ 
  108.     ydirection *= -1; 
  109.   }
  110. }
  111.   
  112.     
    113.  

Astrophysics!

Replies(4)

adam.ts
adam.ts

Re: Need some help with a collision type problem in this very simple game!

3 years ago
this seems to work 
Copy code

  3. float x = 400; // postion of the player
  4. float y = 193; //postion of player
  5. float speed = 10; // movement of player speed


  8. int size = 20;       // Width of the shape
  9. float xpos, ypos;    // Starting position of shape    

  11. float xspeed = 2.8;  // Speed of the shape
  12. float yspeed = 2.2;  // Speed of the shape


  15. int score = 50;

  17. void setup() 
  18. {
  19.   size(640, 200);
  20.   noStroke();
  21.   frameRate(30);
  22.   smooth();
  23.   // Set the starting position of the shape
  24.   xpos = width/2;
  25.   ypos = height/2;
  26. }

  28. void draw() 
  29. {
  30.   background(102);
  31. move();
  32. moveright();
  33. moveleft();
  34.   if (xpos > width-size || xpos < 0) {
  35.     xspeed *= -1;
  36.         print(score);
  37.   }
  38.   if(ypos>=y-size&&abs(x-xpos)<=20){
  39.     if(yspeed>0){
  40.     yspeed*=-1;
  41.     }

  43.   }
  44.   if (ypos > height-size) {
  45. yspeed*=-1;
  46.     score += 1;
  47.     xspeed += 0.1;
  48.     yspeed += 0.1;
  49.   }
  50.     if (score == 100)  {
  51.       print("you win!");
  52.       exit(); 
  53.         
  54.   }
  55.   
  56.   if ( ypos < 0) {
  57.      yspeed *= -1;
  58.      score -= 1;
  59.  }
  60.      if (score == 0){
  61.        
  62.        print("game over");
  63.        exit();
  64.        
  65.      }
  66.      

  68.   // Draw the shape
  69.   float col= random(255);
  70.   float col2 = random(255);
  71.   float col3 = random(255);
  72.   fill(col, col2, col3);
  73.   ellipse(xpos+size/2, ypos+size/2, size, size);

  75.    rect(x,y,40,7);
  76. }
  77. void move(){
  78.   xpos = xpos+xspeed;
  79.   ypos=ypos+yspeed;
  80. }
  81.   
  82.   void moveright() {
  83.   if (keyPressed) {
  84.     if (key == 'd'){
  85.       x = x+speed;
  86.     }
  87.   }
  88.   if ((x + 20) < 0) {
  89.     x = 600;
  90. }
  91. }

  93. void moveleft() {
  94.   if (keyPressed){
  95.     if (key == 'a'){
  96.       x = x - speed;
  97.     }
  98.   }
  99.   if ((x + 20) > 640){
  100.     x = 40;
  101.   }
  102. }
  103.     
 
you don't need xdirectionyou can just multiply xspeed by -1 each time it hits
harrison.perry
harrison...

Re: Re: Need some help with a collision type problem in this very simple game!

3 years ago
Thank you! soo much!

Astrophysics!
shafen
shafen

Re: Need some help with a collision type problem in this very simple game!

2 years ago
did you ever get the score to display on the screen or the lose screen?
harrison.perry
harrison...

Re: Re: Need some help with a collision type problem in this very simple game!

2 years ago


Yeah, In the end the game was working very well if you go here  http://epiphanystudios.co.uk/games/ there is an example of a slightly more advance game with score and lives being displayed :)
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