Processing Forum

Displaying an Image N times

[9 Replies]
- 05-Apr-2012 01:33 PM
- Forum: Programming Questions
I have this challenge. I am trying to display the same image in n locations at the same time.
In this case, im looking at placing it at five different location on my Sketch.This is what i have so far. I guess i have to increment the Value of x and y somewhere, but i dont know where.
1. ...
2. setup(){
3. x = 90;
4. y = 90;
5. }
6. void draw(){
7. PlaceImages();
8. }
9. public void PlaceImages() {
  
        int randomImage = (int)random(1, 23);
        PImage loadedImage;
        String imagePath = "shape/1.png";
        loadedImage = loadImage(imagePath);
  
        for (int i = 0; i<=5; i++) {
  
          image(loadedImage, x, y);
  
        }
      }

Glitch in Collision Detection

[4 Replies]
- 05-Jan-2012 12:12 PM
- Forum: Programming Questions
New Year Wishes to all.
Please i have this little Challenge, i got this Code with the help of this forum that drops Objects( actually images) at random. I also have a Stationary Object(an Image also). I want to detect when one of these droping objects Touches my Other Stationary Object.

This is what i have so far, it works(so poorly), and does not detect most of these falling objects when they touch my stationary object

Thanks for the help
2. void setup(){
3. ...
5. for (int i=0; i < nbrParticles; ++i) {
6. myFlakes[i] = new Particle();
7. }
8. }
9. void draw(){
10. background(109);
11. drop();
12. }
13. class Particle
14. {
15. float vx, vy, vspin; // velocities - added
16. float x, y, spin;
17. boolean show ;
19. Particle() {
20. x = random(width);
21. y = random(height);
22. show = true;
24. vspin = random(-maxSpin, maxSpin);
25. spin = random(TWO_PI);
26. vx = 0;
27. vy = 0;
28. }
30. void render() {
31. pushMatrix();
32. translate(x,y);
33. rotate(spin);
34. if(millis()/2 ==2){
35. image(deathBall, -deathBall.width, -deathBall.height);
36. }
37. else{
38. image(deathBall, -deathBall.width, -deathBall.height);
39. }
40. popMatrix();
41. }
44. }
45. Particle[] myFlakes = new Particle[nbrParticles];
48. public void drop(){
49. for (int i=0; i < nbrParticles; ++i) {
50. Particle f = myFlakes[i];
51. if(f.show){
52. f.render();
53. }
54. // application of forces to velocities
55. f.vy += random(-drift,+drift); // brownian motion
56. f.vx += random(-drift,+drift);
57. f.vy += gravity; // gravity
59. // velocity affects position
60. f.x += f.vx; // add vx to x
61. f.y += f.vy; // add vy to y
63. // constant spin rate
64. f.spin += f.vspin;
66. // apply damping (air friction) to movement velocities
67. f.vx *= damping; // shortcut for vx = vx * damping
68. f.vy *= damping;
70. // wrap around
71. if (f.y > height+50) {
72. f.y = -50;
73. }
74. if (f.x > width+50) {
75. f.x = -50;
76. }
77. if (f.x < -50) {
78. f.x = width+50;
79. }
80. if(isColiding(floor(marioX), floor(marioY), floor(f.x), floor(f.y))){ //marioX and marioY is the X and Y Location of the Image(the Stationary Object)
81. gameOver();
83. }
85. }
86. }
88. public boolean isColiding(float ix,float iy,float ix1,float iy2){
89. if( floor(iy2) > floor(iy) && floor(ix1)== floor(ix)){
90. return true;
91. }
92. return false;
93. }
Credit is given to the Original author of the Particle Class, i only tweaked it a little to serve my Purpose

Reading file content randomly

[5 Replies]
- 08-Dec-2011 06:40 AM
- Forum: Programming Questions
I intend to present Questions to my Users from a text file rather than an array.
Im facing Two problems:

1. How do i randomly Read separate lines from the file and

2. i would also love to put comment in the files, but i would not want to read the commented lines,( they are just there to help the user), assuming he intends to add more Questions to the game.

or is there a better Option apart from these two.

thank You

Code i have so far for reading file's content:
1. File file = new File("data\questions.txt");
      FileInputStream fis = null;
      BufferedInputStream bis = null;
      DataInputStream dis = null;
  
      try{
        fis = new FileInputStream(file);
  
        // Here BufferedInputStream is added for fast reading.
        bis = new BufferedInputStream(fis);
        dis = new DataInputStream(bis);
  
        // dis.available() returns 0 if the file does not have more lines.
        while (dis.available() != 0) {
  ...
        }

Error Loading background Image: Processing + Eclipse

[8 Replies]
- 22-Nov-2011 01:16 PM
- Forum: Integration and Hardware
I Hope this is the right place to ask this.
1. background(bg);// where bg is a background image, same size as size(X,Y)
should set the background image. Im using eclipse(Helios) for Processing Development, added the required libraries but that code always throws an error "background image must be the same size as your application", funny enough, the same Piece of code loads the background image when run from within the PDE.
Any fix for this?

Using random() in draw()

[2 Replies]
- 18-Nov-2011 03:35 PM
- Forum: Programming Questions
I have a challenge, to drop images from various positions in my Program, Im using random() to randomly generate numbers for the x- axis of my Image Location, the Problem is that since my method is called in the draw() function, it loops continuously generating random numbers each time. This makes the circle "shake" when it's droping. This is what i have to far
1. int z = 10;
2. int timedelay,time;
3. void dropBall() {
4. image(ball, generateRandom(), z);
5. z += speed * direction;//speed and direction are earlier declared variables
6. }
7. public float generateRandom(){
8. float nextX;
9. if (z > height + radius) { //height = height of the Screen, radius = radius of image
10. nextX = random(screenWidth);
11. }
12. else{
13. nextX = 100;
14. }
15. return nextX;
16. }
17. void setup(){
18. ...
20. timeDelay = 1000;
21. time = millis();
22. }
1. void draw(){
2. background(204);
3. timer.showTimer(this,600,40);
4. stroke(0);//Bottom Stroke
5. ...
6. if (millis() > time + timeDelay) {
7. dropBall();
8. if (z > height + radius) {
9. z = 0;
10. time = millis();
11. }
12. }
13. }

Reset Timer Problem

[5 Replies]
- 27-Oct-2011 05:09 PM
- Forum: Programming Questions
I have this Challenge, to "drop" an ellipse across a screen every 1 minute, this is the code i have so far
2. float y = 10;
3. float speed = 1.0;
4. float radius = 15.0;
5. int direction = 1;
6. int time;
7. int timeDelay;//Time Delay between calls
9. void setup() {
10. size(500, 500);
11. smooth();
12. noStroke();
13. ellipseMode(RADIUS);
14. time = millis();
15. timeDelay = 10000;
17. }
19. void draw() {
20. background(0);
21. fill(255);
22. if(millis() > time + timeDelay){
23. dropBall();
24. //time =millis(); this didnt give me the Desired Effect
25. }
26. }
27. void dropBall(){
28. ellipse(33, y, radius, radius);
29. y += speed * direction;
30. }
31. void reset(){
32. time = millis();
33. print("called");
}
The dropBall() Function is called only once, i guess i'ld probably need to reset the Millis() function?, how would i achieve calling the dropBall() Function every minute

Thank You

Collision Detection

[2 Replies]
- 22-Oct-2011 05:45 AM
- Forum: Programming Questions
I'm new with processing and i have a little challenge, i have an image say A that moves across my Screen encountering obstacles along it's path. I have the first Obstacle at a position on the screen(500,300 for instance), how do i stop the the already moving image when it approaches this Obstacle.
Thank You

Activity Trend