Processing Forum

help with removal of hearts

[2 Replies]
- 15-May-2012 05:34 AM
- Forum: Programming Questions
Hey guys, I'm doing a game as a schoolproject where u are supposed to catch some things falling, and I want to have hearts that indicates that you have missed an item. I have manage to make one heart dissapear. But the other two hearts i dont know how to remove, i have tried different things...but it hasnt worked.

so please help me out!
2. Heart heartOne;
3. Heart heartTwo;
4. Heart heartThree;
6. Catcher catcher; // One catcher object
7. Timer timer; // One timer object
8. Drop _drops;
9. Drop[] drops; // An array of drop objects
10. int totalDrops = 0; // totalDrops
11. int xValue = 200;
13. void setup() {
15. size(400, 400);
16. smooth();
17. catcher = new Catcher(32); // Create the catcher with a radius of 32
18. drops = new Drop[1000]; // Create 1000 spots in the array
19. timer = new Timer(1500); // Create a timer that goes off every 2 seconds
20. timer.start(); // Starting the timer
22. heartOne = new Heart(382, 20, 20, 20);
23. heartTwo = new Heart(360, 20, 20, 20);
24. heartThree = new Heart(338, 20, 20, 20);
25. }
27. void draw() {
28. background(255);
30. // Set catcher location
31. catcher.setLocation(xValue, 360);
32. // Display the catcher
33. catcher.display();
35. //display heart
36. heartOne.heartDisplay();
37. heartTwo.heartDisplay();
38. heartThree.heartDisplay();
40. // Check the timer
41. if (timer.isFinished()) {
42. // Deal with raindrops
43. // Initialize one drop
44. drops[totalDrops] = new Drop();
45. // Increment totalDrops
46. totalDrops ++ ;
47. // If we hit the end of the array
48. if (totalDrops >= drops.length) {
49. totalDrops = 0; // Start over
50. }
51. timer.start();
52. }
56. // Move and display all drops
57. for (int i = 0; i < totalDrops; i++ ) {
58. drops[i].move();
59. drops[i].display();
60. if (catcher.intersect(drops[i])) {
61. drops[i].caught();
62. }
63. }
64. //BOUNCE ON WALL
65. if (xValue<=0)
66. {
67. xValue = 0;
68. }
70. if (xValue>=width)
71. {
72. xValue = width;
73. }
75. for (int i = 0; i < totalDrops; i++) {
76. if (drops[i].reachedBottom())
77. {
78. heartOne.remove();
79. }
80. }
81. }
83. void keyPressed() {
84. if (key == CODED) {
85. if (keyCode == LEFT) {
86. xValue = xValue-20;
87. }
88. }
89. if (key == CODED) {
90. if (keyCode == RIGHT) {
91. xValue = xValue+20;
92. }
93. }
94. }
96. ////////
99. class Drop {
100. float x,y; // Variables for location of raindrop
101. float speed; // Speed of raindrop
102. color c;
103. float r; // Radius of raindrop
105. Drop() {
106. r = 8; // All raindrops are the same size
107. x = random(width); // Start with a random x location
108. y = -r*4; // Start a little above the window
109. speed = random(1,2); // Pick a random speed
110. c = color(50,100,150); // Color
111. }
113. // Move the raindrop down
114. void move() {
115. // Increment by speed
116. y += speed;
117. }
119. // Check if it hits the bottom
120. boolean reachedBottom() {
121. // If we go a little beyond the bottom
122. if (y > height) {
123. return true;
124. } else {
125. return false;
126. }
127. }
129. // Display the raindrop
130. void display() {
131. // Display the drop
132. fill(c);
133. noStroke();
134. for (int i = 2; i < r; i++ ) {
135. ellipse(x,y + i*4,i*2,i*2);
136. }
137. }
139. // If the drop is caught
140. void caught() {
141. // Stop it from moving by setting speed equal to zero
142. speed = 0;
143. // Set the location to somewhere way off-screen
144. y = - 1000;
145. }
146. }
148. /////////////////
151. class Heart {
153. int xHeart;
154. int yHeart;
155. int wHeart;
156. int hHeart;
157. boolean heartCheck;
159. Heart(int _x, int _y, int _w, int _h)
160. {
161. xHeart = _x;
162. yHeart = _y;
163. wHeart = _w;
164. hHeart = _h;
165. }
169. void remove()
170. {
171. xHeart = 100;
172. heartCheck = true;
173. }
177. void heartDisplay()
178. {
179. ellipse(xHeart, yHeart, wHeart, hHeart);
180. }
183. }

Need help with Array intersection.

[4 Replies]
- 10-Apr-2012 06:24 AM
- Forum: Programming Questions
Hey guys, i have made some balls from an array which are just bouncing around at the moment...I have tried to make them bounce when they intersect with each other, but i have no clue of how to do it. I can manage it when there are only two instances of the ballclass... so please can someone tell me how to make the balls from the same array bounce away from each other?!

Code:
2. Ball[] ball;
3. int totalBalls = 0;
4. int lastMillis = 0;
6. void setup() {
7. size(400, 400);
8. smooth();
10. // Initialize balls
11. ball = new Ball[100];
12. }
14. void draw() {
15. background(255);
16. //timer; display a new ball randomly
17. if (millis()- lastMillis>random(1000, 3000))
18. {
19. ball[totalBalls] = new Ball();
21. lastMillis = millis();
22. //add one each time
23. totalBalls ++;
24. }
26. //when all balls have been created, start over
27. if (totalBalls >= ball.length)
28. {
29. totalBalls = 0;
30. }
31. //move and display
32. for (int i = 0; i<totalBalls; i++ )
33. {
34. ball[i].movement();
35. ball[i].display();
36. }
37. }
40. class Ball {
41. float r; // radius
42. float x, y;
43. float xspeed, yspeed;
44. color c = color(100, 50);
46. // Constructor
47. Ball() {
48. r = random(20, 50);
49. x = random(width);
50. y = random(height);
51. xspeed = 5;
52. yspeed = 5;
53. }
54. //movement
55. void movement() {
56. x += xspeed; // Increment x
57. y += yspeed; // Increment y
59. // Check horizontal edges
60. if (x > width || x < 0) {
61. xspeed *= - 1;
62. }
64. // Check vertical edges
65. if (y > height || y < 0) {
66. yspeed *= - 1;
67. }
68. }
70. // //bounce function
71. // void bounce()
72. // {
73. // xspeed = xspeed * -1;
74. // yspeed = yspeed * -1;
75. // }
78. // Draw the ball
79. void display() {
80. stroke(0);
81. fill(c);
82. ellipse(x, y, r*2, r*2);
83. }
84. }

Help with bullets

[10 Replies]
- 18-Mar-2012 06:06 AM
- Forum: Programming Questions
Hey guys, I'm doing a game where you shoot some bullets when you press space, that is already done. But instead of only firing one shot once, it shoots alot of bullets..how can i make it so that when you press space it only fire one bullet once?

Thanks!
1. //variables
  ball myBall;
  ArrayList enemies;
  ArrayList bullets;
  
  void setup()
  {
  //size and shit
  size(400, 400);
  frameRate(60);
  smooth();
  
  //declare new instances of the classes
  myBall = new ball(200, 300);
  enemies = new ArrayList();
  bullets = new ArrayList();
  }
  
  void draw()
  {
  background(0);
  //run the classes
  /////////////////////////////BALL///////////////////////////
  myBall.run();
  
  /////////////////////////BULLETS/////////////////////////////
  //DISPLAY, FUNCTIONS for BULLETS
  for (int i = bullets.size()-1; i>=0; i--)
  {
      Bullet bullet =(Bullet) bullets.get(i);
      bullet.movement();
      bullet.display();
  }
  
  ////////////////////////////ENEMIES/////////////////////////////
  enemies.add(new enemies1());
  
  //add enemies
  for (int i = enemies.size()-1; i>= 0; i--)
  {
      enemies1 e = (enemies1) enemies.get(i);
      e.displayEnemies();
  }
  //remove enemies
  if (enemies.size() > height)
  {
      enemies.remove(0);
  }
  ////////////////////////// KEY ///////////////////////////////
  //KEY RIGHT
  if (keyPressed)
  {
      if (key == CODED)
      {
        if (keyCode == RIGHT)
        {
          myBall.rightArrow();
        }
      }
  }
  //KEY RIGHT
  if (keyPressed)
  {
      if (key == CODED)
      {
        if (keyCode == LEFT)
        {
          myBall.leftArrow();
        }
      }
  }
  // SHOTBUTTON
      if (keyPressed)
      {
        if (key == ' ')
        {
          bullets.add(new Bullet(myBall.xPos, myBall.yPos-25, 5, 5));
        }
  }
  }
2. class Bullet {
  //variables
  float xPos;
  float yPos;
  float hPos;
  float wPos;
  float speed = 5;
  boolean keys = false;
  
  //constructor
  Bullet(float _xPos, float _yPos, float _h, float _w)
  {
      xPos = _xPos;
      yPos = _yPos;
      hPos = _h;
      wPos = _w;
  }
  
     void movement() {
      // Add speed to y location
      yPos = yPos - speed;
  }
  
  void display() {
      fill(255);
      strokeWeight(2);
      rect(xPos,yPos,wPos,hPos);
  }
  }

Help with movement and shooting

[2 Replies]
- 11-Mar-2012 07:22 AM
- Forum: Programming Questions
Hey, I'm making a small shooting-game. I have right now an ellipse which you can move with the arrowkeys from left to right and i have made a bullet which fires when you press a key. But my problem now is that i want the bullet to fire from the same position that my ellipse has. Right now the bullet only fires from the centre of the screen. How can I make the bullet (shot class) follow the ellipse's movement?

Thanks in advance!

My code:
1. //variables
  ball myBall;
  shot myShot;
  ArrayList enemies;
  
  void setup()
  {
  //size and shit
  size(400, 400);
  frameRate(60);
  smooth();
  
  //declare new instances of the classes
  myBall = new ball(200, 300);
  myShot = new shot(200, 300);
  enemies = new ArrayList();
  }
  
  void draw()
  {
  background(0);
  //run the classes
  myBall.run();
  myShot.displayShot();
  
  enemies.add(new enemies1());
  //add enemies
  for (int i = enemies.size()-1; i>= 0; i--)
  {
      enemies1 e = (enemies1) enemies.get(i);
      e.displayEnemies();
  }
  //remove enemies
  if (enemies.size() > height)
  {
      enemies.remove(0);
  }
  }
2. class ball {
  
  //Variables
  float xPos;
  float yPos;
  float sizeH = 50;
  float sizeW = 50;
  float speed = 3;
  float rightWall = 375;
  float leftWall = 25;
  float gravY = random(-1, 1);
  
  //constructor
  ball (float _xPos, float _yPos)
  {
      xPos = _xPos;
      yPos = _yPos;
  }
  
  //run everything in one method in first_game class
  void run()
  {
      display();
      movement();
      rightArrow();
      leftArrow();
  }
  //display the ball
  void display()
  {
      ellipse(xPos, yPos, sizeH, sizeW); //draw ellipse
      strokeWeight(2);
  }
  //move the ball
  void movement()
  {
      if (xPos >= rightWall) // bounce right
      {
        xPos = rightWall;
      }
  
      if (xPos <= leftWall) // bounce left
      {
        xPos = leftWall;
      }
  }
  //keyPressed right
  void rightArrow()
  {
      if (keyPressed)
      {
        if (key == CODED)
        {
          if (keyCode == RIGHT) // move right
          {
            xPos = xPos + speed;
          }
        }
      }
  }
  //keyPressed left
  void leftArrow()
  {
      if (keyPressed)
      {
        if (key == CODED)
        {
          if (keyCode == LEFT) // move left
          {
            xPos = xPos - speed;
          }
        }
      }
  }
  }
3. class shot {
  //variables
  float xPos;
  float yPos;
  float speed = 5;
  boolean keys = false;
  
  //constructor
  shot(float _xPos, float _yPos)
  {
      xPos = _xPos;
      yPos = _yPos;
  }
  //run everything in one method in first_game class
  void displayShot()
  {
      //movement();
      display();
      space();
  }
  //display shot, make the shot go
  void display()
  {
      if (keys == true)
      {
        rect(xPos, yPos, 5, 10);
        yPos = yPos - speed;
      }
      else
      {
        keys = false;
      }
  }
  
  void space()
  {
      if (keyPressed)
      {
        if (key == 'k' || key == 'K' && keys == false) // move right
        {
          keys = true;
        }
      }
  }
  void keyReleased()
  {
      if (key =='k'|| key == 'K' && keys == true)
      {
        //keys = false;
      }
  }
  }

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