Processing Forum

Complex Shape Colission

[7 Replies]
- 08-Dec-2012 02:09 PM
- Forum: General Discussion
I'm trying to have a bullet collide with a shape drawn with beginShape(); and endShape();. All of my points are stored as PVectors in an array. How can I test if a point is inside of the shape?

Asteroids

[12 Replies]
- 05-Dec-2012 06:31 PM
- Forum: Programming Questions
I'm working on an Asteroids clone, but I'm having trouble when it comes to movement. I got the player to move properly, but then I realized that in Asteroids, when you stop moving forwards, you drift in the same direction, and can turn on the spot without moving in a different direction (hopefully you understand this). Can anybody help me with this?

Relevant class files:
2. Player player;
3. Factory factory = new Factory();
4. ArrayList enemies = new ArrayList();
6. boolean upReleased = true;
8. int score;
10. boolean show;
12. boolean keys[] = new boolean[512];
14. void setup() {
15. size(screen.width-300, screen.height);
16. smooth();
17. player = new Player();
18. factory.newEnemy();
19. }
21. void draw() {
22. background(0);
23. text("Score: "+score, 0, 10);
24. player.update();
25. if (keys[' ']) player.fire();
26. updateEnemies();
27. if (keys[81]) factory.newEnemy();
28. println(upReleased);
29. }
31. void keyPressed() {
32. keys[keyCode] = true;
33. }
35. void keyReleased() {
36. keys[keyCode] = false;
37. }
39. void updateEnemies() {
40. //if (frameCount % 120 == 0) factory.newEnemy();
41. for (int i = 0; i < enemies.size(); i++) {
42. Enemy e =(Enemy) enemies.get(i);
43. e.update();
44. if (e.destroyed) {
45. enemies.remove(i);
46. factory.split(e, i);
47. if (enemies.size() == 0) {
48. show = true;
49. }
50. }
51. }
52. }
2. class Player {
3. float ang, moveang, speed, x, y;
4. boolean canshoot = true;
5. ArrayList bullets;
6. Player() {
7. bullets = new ArrayList();
8. ang = PI+HALF_PI;
9. moveang = PI+HALF_PI;
10. speed = 0;
11. x = width/2;
12. y = height/2;
13. }
14. void update() {
15. if (frameCount % 45 == 0) canshoot = true;
17. pushMatrix();
18. translate(x, y);
19. rotate(ang);
20. fill(255);
21. rect(-20, -7.5, 40, 15); // Center the rect
22. translate(20, 0); // Translate to default Polar Coordinate 0 radians
23. ellipse(0, 0, 5, 5); // Display direction
24. popMatrix();
26. x += cos(moveang)*speed;
27. y += sin(moveang)*speed;
29. if (frameCount % 5 == 0) speed = speed*9/10;
30. if (speed < 0.05) speed = 0;
32. if (keys[UP]) {
33. speedup();
34. keys[UP] = false;
35. }
36. if (keys[LEFT]) {
37. ang -= 0.05;
38. }
39. if (keys[RIGHT]) {
40. ang += 0.05;
41. }
43. if (speed == 0||(keyCode==UP)) moveang = ang;
45. if (speed > 10) speed = 5;
47. if (x > width+20) x = -20;
48. if (x < -20) x = width+20;
50. if (y > height+20) y = -20;
51. if (y < -20) y = height+20;
54. for (int i = 0; i < bullets.size(); i++) {
55. Bullet b = (Bullet) bullets.get(i);
56. b.update();
57. if (b.speed < 0.05) bullets.remove(i);
58. }
59. }
60. void fire() {
61. //if (canshoot) {
62. bullets.add(new Bullet(x, y, ang));
63. canshoot = false;
64. //}
65. }
66. void speedup() {
67. while (speed < 5) {
68. speed += 0.25;
69. }
70. return;
71. }
72. }

Moving on an angle

[5 Replies]
- 28-Nov-2012 01:02 PM
- Forum: Programming Questions
I'm trying to make a character controlled by arrow keys, and I want it to move in any direction. when I hit left and right, i would like it to turn, and up and down should be forwards and backwards. I have something that kinda works, but it only rotates around the screen corner, and is technically only sliding on the x axis. Can anybody help?
2. int x;
3. int y;
5. float ang;
7. void setup() {
8. size(500, 500);
9. smooth();
10. }
12. void draw() {
13. background(0);
14. pushMatrix();
15. rotate(ang);
16. translate(x, y);
17. rect(0, -5, 40, 10);
18. popMatrix();
19. if (keyPressed) {
21. switch(keyCode) {
22. case UP:
23. x+=5;
24. break;
25. case DOWN:
26. x-=5;
27. break;
28. case LEFT:
29. ang -= 0.01;
30. break;
31. case RIGHT:
32. ang += 0.01;
33. break;
34. }
35. }
36. }

Yet another paint question

[5 Replies]
- 03-Nov-2012 01:02 PM
- Forum: Contributed Library Questions
Once again, I'm modifying my paint program. This time, i'll be adding a fill bucket.
<sarcasm> Oh, joy! </sarcasm>.
I found this paint bucket function on the internet, and I modified slightly to suit my needs. The only problem is that when I implement it into my paint program, it gives me a NullPointer exception.
2. import controlP5.*;
3. ControlP5 slider;
5. PGraphics canvas;
7. int r = 255;
8. int g = 255;
9. int b = 255;
10. float s = 50;
12. float br, bg, bb;
14. void setup() {
15. size(screen.width, screen.height);
16. smooth();
17. canvas = createGraphics(width-350, height, JAVA2D);
18. canvas.beginDraw();
19. canvas.smooth();
20. canvas.background(br, bg, bb);
21. canvas.endDraw();
22. cursor(CROSS);
23. slider = new ControlP5(this);
24. slider.addSlider("r", 0, 255, 10, 10, 255, 30);
25. slider.addSlider("g", 0, 255, 10, 50, 255, 30);
26. slider.addSlider("b", 0, 255, 10, 90, 255, 30);
27. slider.addSlider("s", 0, 100, 10, 130, 255, 30);
28. slider.addSlider("br", 0, 255, 10, 510, 255, 30);
29. slider.addSlider("bg", 0, 255, 10, 550, 255, 30);
30. slider.addSlider("bb", 0, 255, 10, 590, 255, 30);
31. }
33. void draw() {
34. background(0);
35. drawMenu();
36. image(canvas, 350, 0);
38. fill(r,g,b);
39. ellipse(mouseX, mouseY, s, s);
41. stroke(r, g, b);
42. strokeWeight(s);
43. if (mousePressed && mouseButton == LEFT && mouseX > 350) {
44. canvas.beginDraw();
45. canvas.stroke(r, g, b);
46. canvas.strokeWeight(s);
47. canvas.line(mouseX-350, mouseY, pmouseX-350, pmouseY);
48. canvas.endDraw();
49. }
50. if (mousePressed && mouseButton == RIGHT && mouseX > 350) {
51. canvas.beginDraw();
52. canvas.stroke(br, bg, bb);
53. canvas.strokeWeight(s);
54. canvas.line(mouseX-350, mouseY, pmouseX-350, pmouseY);
55. canvas.endDraw();
56. }
57. }
59. void drawMenu() {
60. noStroke();
61. fill(0);
62. rect(0, 0, 350, height);
63. fill(r, g, b);
64. ellipse(100, 300, s, s);
65. fill(br, bg, bb);
66. ellipse(100, 450, 50, 50);
67. fill(200, 0, 0);
68. textSize(48);
69. text("SAVE", 90, height-90);
70. }
72. void keyPressed() {
73. if (key == ' ') {
74. canvas.beginDraw();
75. canvas.background(br, bg, bb);
76. canvas.endDraw();
77. }
78. if (key == 'z' || key == 'Z') {
79. color c = canvas.get(mouseX-350, mouseY);
80. slider.controller("r").setValue(red(c));
81. slider.controller("g").setValue(green(c));
82. slider.controller("b").setValue(blue(c));
83. }
84. if (key == 'x' || key == 'X') {
85. color c = canvas.get(mouseX-350, mouseY);
86. slider.controller("br").setValue(red(c));
87. slider.controller("bg").setValue(green(c));
88. slider.controller("bb").setValue(blue(c));
89. }
90. }
92. void mouseReleased() {
93. if (mouseX <= 350 && mouseY >= 650) {
94. String savePath = selectOutput("Save Image");
95. canvas.save(savePath);
96. }
97. }
99. void floodFill(int x, int y, int currcol, int newcol) {
100. int pixelQueue[] = new int[width * height];
101. int pixelQueueSize = 0;
103. pixelQueue[0] = (y << 16) + x;
104. pixelQueueSize = 1;
106. canvas.set(x, y, newcol);
108. while (pixelQueueSize > 0) {
109. x = pixelQueue[0] & 0xffff;
110. y = (pixelQueue[0] >> 16) & 0xffff;
112. pixelQueueSize--;
113. pixelQueue[0] = pixelQueue[pixelQueueSize];
115. if (x > 0) {
116. if ((canvas.get(x-1, y) == currcol) && (canvas.get(x-1, y) != newcol)) {
117. canvas.set(x-1, y, newcol);
118. pixelQueue[pixelQueueSize] = (y << 16) + x-1;
119. pixelQueueSize++;
120. }
121. }
122. if (y > 0) {
123. if ((canvas.get(x, y-1) == currcol) && (canvas.get(x, y-1) != newcol)) {
124. canvas.set(x, y-1, newcol);
125. pixelQueue[pixelQueueSize] = ((y-1) << 16) + x;
126. pixelQueueSize++;
127. }
128. }
129. if (x < width-1) {
130. if ((canvas.get(x+1, y) == currcol) && (canvas.get(x+1, y) != newcol)) {
131. canvas.set(x+1, y, newcol);
132. pixelQueue[pixelQueueSize] = (y << 16) + x+1;
133. pixelQueueSize++;
134. }
135. }
136. if (y < height-1) {
137. if ((canvas.get(x, y+1) == currcol) && (canvas.get(x, y+1) != newcol)) {
138. canvas.set(x, y+1, newcol);
139. pixelQueue[pixelQueueSize] = ((y+1) << 16) + x;
140. pixelQueueSize++;
141. }
142. }
143. }
145. updatePixels();
146. }

P2D

[5 Replies]
- 01-Nov-2012 06:40 PM
- Forum: Contributed Library Questions
I made a paint program a while back, and it works fine, however I decided to add a few things. I can now save my images, and I was working on getting a circe to appear above where you are about to paint, as it does in MS Paint. I experimented with PGraphics, but the P2D renderer messes with my shapes, and turns them into weird lines, and I can't get the mouse image to clear from the screen. Help anybody?
2. import controlP5.*;
4. ControlP5 slider;
6. PGraphics mouse;
8. int r = 255;
9. int g = 255;
10. int b = 255;
11. float s = 50;
13. float br=0;
14. float bg=0;
15. float bb=0;
17. void setup() {
18. size(screen.width, screen.height);
20. mouse=createGraphics(width-350, height, P2D);
22. smooth();
23. mouse.smooth();
24. frameRate(500);
25. background(br, bg, bb);
26. strokeWeight(50);
27. stroke(255, 0, 0);
28. cursor(CROSS);
30. slider=new ControlP5(this);
31. slider.addSlider("r", 0, 255, 10, 10, 255, 30);
32. slider.addSlider("g", 0, 255, 10, 50, 255, 30);
33. slider.addSlider("b", 0, 255, 10, 90, 255, 30);
34. slider.addSlider("s", 0, 100, 10, 130, 255, 30);
35. slider.addSlider("br", 0, 255, 10, 510, 255, 30);
36. slider.addSlider("bg", 0, 255, 10, 550, 255, 30);
37. slider.addSlider("bb", 0, 255, 10, 590, 255, 30);
38. }
39. void draw() {
40. noStroke();
41. fill(0);
42. rect(0, 0, 350, height);
43. fill(r, g, b);
44. ellipse(100, 300, s, s);
45. fill(br, bg, bb);
46. ellipse(100, 500, 50, 50);
47. fill(200, 0, 0);
48. textSize(48);
49. text("SAVE", 90, height-90);
50. mouse.stroke(r, g, b);
51. mouse.strokeWeight(s);
52. mouse.beginDraw();
53. mouse.background(0, 0, 0, 0);
54. mouse.ellipse(mouseX-350, mouseY, s/2, s/2);
55. mouse.endDraw();
56. stroke(r, g, b);
57. strokeWeight(s);
58. if (mousePressed) {
59. if (mouseButton==LEFT&&mouseX>350) {
60. line(mouseX, mouseY, pmouseX, pmouseY);
61. }
62. }
63. image(mouse, 350, 0);
64. }
65. void keyPressed() {
66. if (keyCode==' ') {
67. background(br, bg, bb);
68. }
69. if (keyCode=='z'||keyCode=='Z') {
70. color c=get(mouseX, mouseY);
71. slider.controller("r").setValue(red(c));
72. slider.controller("g").setValue(green(c));
73. slider.controller("b").setValue(blue(c));
74. }
75. if (keyCode=='x'||keyCode=='X') {
76. color c=get(mouseX, mouseY);
77. slider.controller("br").setValue(red(c));
78. slider.controller("bg").setValue(green(c));
79. slider.controller("bb").setValue(blue(c));
80. }
81. }
82. void mouseReleased() {
83. if (mouseX<=350&&mouseY>=650) {
84. PImage frame = get(350, 0, width, height);
85. String savePath=selectOutput("Save Image");
86. frame.save(savePath);
87. cursor(CROSS);
88. }
89. }

Removing from an ArrayList

[6 Replies]
- 25-Oct-2012 10:51 AM
- Forum: Programming Questions
I'm trying to make Rush Hour, and it's working fine, but the blocks don't reset for each level. I've tried using the arrraylist.remove command, but it keeps drawing them. Help?
Main code:
2. color grid[][]=new color[6][6];
3. ArrayList blocks=new ArrayList();
5. int active;
6. int level=1;
8. void setup() {
9. strokeWeight(2);
10. for (int x=5; x>=0; x--) {
11. for (int y=5; y>=0; y--) {
12. grid[x][y]=color(176);
13. }
14. }
15. blocks.add(new Block(1, 0, 2));
16. size(600, 600);
17. initializeLevel(level);
18. }
20. void draw() {
21. Block current=(Block) blocks.get(active);
22. background(0);
23. if (!didIwin()) {
24. updateBlocks();
25. drawGrid();
26. fill(255, 0, 255);
27. rect(current.xpos*100, current.ypos*100, 100, 100);
28. }
29. else {
30. if (level < 10) {
31. level++;
32. initializeLevel(level);
33. }
34. }
35. }
37. void keyPressed() {
38. Block current=(Block) blocks.get(active);
39. switch (keyCode) {
40. case TAB:
41. active++;
42. active%=blocks.size();
43. break;
44. case RIGHT:
45. current.moveRight();
46. break;
47. case LEFT:
48. current.moveLeft();
49. break;
50. case UP:
51. current.moveUp();
52. break;
53. case DOWN:
54. current.moveDown();
55. break;
56. }
57. }
59. void updateBlocks() {
60. for (int i=blocks.size()-1; i>=0; i--) {
61. Block block=(Block) blocks.get(i);
62. block.update();
63. }
64. }
66. void drawGrid() {
67. for (int x=5; x>=0; x--) {
68. for (int y=5; y>=0; y--) {
69. fill (grid[x][y]);
70. rect(x*100, y*100, 100, 100);
71. }
72. }
73. }
75. void initializeLevel(int lvl) {
76. for (int i=1; i<blocks.size(); i++) {
77. blocks.remove(i);
78. }
79. for (int x=0; x<6; x++) {
80. for (int y=0; y<6; y++) {
81. grid[x][y]=color(176);
82. }
83. }
84. Block player=(Block) blocks.get(0);
85. switch (lvl) {
86. case 0:
87. blocks.add(new Block(2, 0, 0));
88. break;
89. case 1:
90. player.xpos=1;
91. blocks.add(new Block(2, 0, 0));
92. blocks.add(new Block(5, 5, 0));
93. blocks.add(new Block(5, 0, 1));
94. blocks.add(new Block(5, 3, 1));
95. blocks.add(new Block(4, 0, 4));
96. blocks.add(new Block(2, 4, 4));
97. blocks.add(new Block(3, 2, 5));
98. break;
99. case 2:
100. player.xpos=0;
101. blocks.add(new Block(4, 0, 0));
102. blocks.add(new Block(3, 3, 0));
103. blocks.add(new Block(4, 3, 1));
104. blocks.add(new Block(4, 4, 2));
105. blocks.add(new Block(5, 5, 3));
106. blocks.add(new Block(4, 2, 4));
107. blocks.add(new Block(2, 3, 4));
108. blocks.add(new Block(2, 0, 5));
109. blocks.add(new Block(2, 3, 5));
110. break;
111. }
112. }
114. boolean didIwin() {
115. Block player=(Block) blocks.get(0);
116. if (player.xpos==4) {
117. return true;
118. }
119. else {
120. return false;
121. }
122. }
Block class:
2. class Block {
3. int xpos, ypos;
4. int blocktype;
5. Block (int b, int x, int y) {
6. blocktype = b;
7. xpos = x;
8. ypos = y;
9. }
10. void update() {
11. switch (blocktype) {
12. case 1:
13. grid[xpos][ypos]=color(255, 0, 0);
14. grid[xpos+1][ypos]=color(255, 0, 0);
15. break;
16. case 2:
17. grid[xpos][ypos]=color(0, 255, 255);
18. grid[xpos+1][ypos]=color(0, 255, 255);
19. break;
20. case 3:
21. grid[xpos][ypos]=color(0, 0, 255);
22. grid[xpos+1][ypos]=color(0, 0, 255);
23. grid[xpos+2][ypos]=color(0, 0, 255);
24. break;
25. case 4:
26. grid[xpos][ypos]=color(255, 255, 0);
27. grid[xpos][ypos+1]=color(255, 255, 0);
28. break;
29. case 5:
30. grid[xpos][ypos]=color(0, 255, 0);
31. grid[xpos][ypos+1]=color(0, 255, 0);
32. grid[xpos][ypos+2]=color(0, 255, 0);
33. break;
34. }
35. }
36. void moveLeft() {
37. switch (blocktype) {
38. case 1:
39. if (xpos>0&&grid[xpos-1][ypos]==color(176)) {
40. grid[xpos][ypos]=color(176);
41. grid[xpos+1][ypos]=color(176);
42. xpos--;
43. }
44. break;
45. case 2:
46. if (xpos>0&&grid[xpos-1][ypos]==color(176)) {
47. grid[xpos][ypos]=color(176);
48. grid[xpos+1][ypos]=color(176);
49. xpos--;
50. }
51. break;
52. case 3:
53. if (xpos>0&&grid[xpos-1][ypos]==color(176)) {
54. grid[xpos][ypos]=color(176);
55. grid[xpos+1][ypos]=color(176);
56. grid[xpos+2][ypos]=color(176);
57. xpos--;
58. }
59. break;
60. }
61. }
62. void moveRight() {
63. switch (blocktype) {
64. case 1:
65. if (xpos+1<5&&grid[xpos+2][ypos]==color(176)) {
66. grid[xpos][ypos]=color(176);
67. grid[xpos+1][ypos]=color(176);
68. xpos++;
69. }
70. break;
71. case 2:
72. if (xpos+1<5&&grid[xpos+2][ypos]==color(176)) {
73. grid[xpos][ypos]=color(176);
74. grid[xpos+1][ypos]=color(176);
75. xpos++;
76. }
77. break;
78. case 3:
79. if (xpos+2<5) {
80. grid[xpos][ypos]=color(176);
81. grid[xpos+1][ypos]=color(176);
82. grid[xpos+2][ypos]=color(176);
83. xpos++;
84. }
85. break;
86. }
87. }
88. void moveUp() {
89. switch (blocktype) {
90. case 4:
91. if (ypos>0&&grid[xpos][ypos-1]==color(176)) {
92. grid[xpos][ypos]=color(176);
93. grid[xpos][ypos+1]=color(176);
94. ypos--;
95. }
96. break;
97. case 5:
98. if (ypos>0&&grid[xpos][ypos-1]==color(176)) {
99. grid[xpos][ypos]=color(176);
100. grid[xpos][ypos+1]=color(176);
101. grid[xpos][ypos+2]=color(176);
102. ypos--;
103. }
104. break;
105. }
106. }
107. void moveDown() {
108. switch (blocktype) {
109. case 4:
110. if (ypos<4&&grid[xpos][ypos+2]==color(176)) {
111. grid[xpos][ypos]=color(176);
112. grid[xpos+1][ypos]=color(176);
113. ypos++;
114. }
115. break;
116. case 5:
117. if (ypos<3&&grid[xpos][ypos+3]==color(176)) {
118. grid[xpos][ypos]=color(176);
119. grid[xpos][ypos+1]=color(176);
120. grid[xpos][ypos+2]=color(176);
121. ypos++;
122. }
123. break;
124. }
125. }
126. }

Vectors

[4 Replies]
- 17-Oct-2012 03:25 PM
- Forum: Programming Questions
I'm trying to import vectors into my program, but some of the points come out shifted to the right. Does anybody know what's going on?

Binary Converter

[4 Replies]
- 03-Oct-2012 06:23 AM
- Forum: Programming Questions
I'm trying to make a program where I can type something in binary, and it will convert it into letters for me. I came up with this simple program, but it's telling me the "[" in the third line is unexpected. What did I do wrong?
2. String letters[]=new String[26];
3. String typed="0";
4. letters[0]="a";
5. letters[1]="b";
6. letters[2]="c";
7. letters[3]="d";
8. letters[4]="e";
9. letters[5]="f";
10. letters[6]="g";
11. letters[7]="h";
12. letters[8]="i";
13. letters[9]="j";
14. letters[10]="k";
15. letters[11]="l";
16. letters[12]="m";
17. letters[13]="n";
18. letters[14]="o";
19. letters[15]="p";
20. letters[16]="q";
21. letters[17]="r";
22. letters[18]="s";
23. letters[19]="t";
24. letters[20]="u";
25. letters[21]="v";
26. letters[22]="w";
27. letters[23]="x";
28. letters[24]="y";
29. letters[25]="z";
31. void draw(){
32. text(unbinary(typed),10,10);
33. }
35. void keyReleased(){
36. if(key!=CODED){
37. switch(key){
38. case BACKSPACE:
39. typed=typed.substring(0,max(0,typed.length()-1));
40. break;
41. default:
42. typed+=key;
43. }
44. }
45. }

Paint Program

[5 Replies]
- 21-Sep-2012 10:25 AM
- Forum: Contributed Library Questions
So for my first real project in processing, I decided to go simple, and make paint. I have already finished and moved on, but there are still some things I would like to work out. The main thing I want to add is an "eyedropper" tool. I've tried many different codes that work in my mind, but I just can't seem to get it to run properly. I've already tried storing the color to a variable. I'm using controlP5 for the color picker.
2. import controlP5.*;
4. ControlP5 slider;
6. int r = 255;
7. int g = 255;
8. int b = 255;
9. float s = 50;
11. float br=0;
12. float bg=0;
13. float bb=0;
15. void setup()
16. {
17. size(screen.width,screen.height);
18. smooth();
19. frameRate(500);
20. background(br,bg,bb);
21. strokeWeight(50);
22. stroke(255,0,0);
23. cursor(CROSS);
25. slider=new ControlP5(this);
26. slider.addSlider("r",0,255,10,10,255,30);
27. slider.addSlider("g",0,255,10,50,255,30);
28. slider.addSlider("b",0,255,10,90,255,30);
29. slider.addSlider("s",0,100,10,130,255,30);
30. slider.addSlider("br",0,255,10,610,255,30);
31. slider.addSlider("bg",0,255,10,650,255,30);
32. slider.addSlider("bb",0,255,10,690,255,30);
33. }
34. void draw()
35. {
36. noStroke();
37. fill(0);
38. rect(0,0,350,height);
39. fill(r,g,b);
40. ellipse(100,300,s,s);
41. fill(br,bg,bb);
42. ellipse(100,500,50,50);
43. stroke(r,g,b);
44. strokeWeight(s);
45. if (mousePressed == true&&mouseX>350)
46. {
47. line(mouseX,mouseY,pmouseX,pmouseY);
48. }
49. }
50. void keyPressed()
51. {
52. if(keyCode==' ')
53. {
54. background(br,bg,bb);
55. }
56. }

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