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Need help getting mouseX and mouseY location when you press the mouse

[1 Reply]
- 30-May-2012 08:23 AM
- Forum: Programming Questions
2. int x = mouseX;
3. int y = mouseY;
4. string x1 = str(x);
  string y1 = str(y);
5. void setup(){
6. size(700,500);
7. }
9. void draw(){
11. //gives the location of the mouse on the top left corner
12. fill(#000000); //black
13. rect(700-60,10,55,30);
14. String mouseLocation = "" + mouseX + ", " + mouseY;
15. fill(#FFFF00); //yellow
16. text(mouseLocation, 700-55,30);
18. //evaluates to determine if mouse is pressed. If true, then it prints out the mouseX and mouseY location.
19. if(mousePressed == true){
20. print(x1+y1);
21. }
22. }
So I can't get this to work. Everytime I click on the screen that pops up when I run, all it returns is "00000".

I essentially want to have a variable that stores the x and y mouse location when it's pressed so I can use it later. But i'm not sure why my logic is wrong. Can somebody help me fix it?

Having trouble getting various things to happen in my program. Deals with constructors, changing object direction when it bounces, and 1 more

[3 Replies]
- 29-May-2012 04:03 PM
- Forum: Programming Questions
THE CODE IS BELOW THIS WALL OF TEXT (SORRY)

So here's my problem. First I'd like to get the constructor to have all the parameters instead of doing

it individually for each new instance. I tried following an example here:

https://forum.processing.org/topic/oop-error

But didn't work out very well.

Secondly, I'm trying to get my fishes to bounce around based off of the "law of reflection" in physics

around a specified bound for my width and height of an aquarium that isn't there atm. What my fish does

instead is bounce once and then goes to the left of the screen straight horizontally.

I'm not entirely sure what I did wrong. My code for trying to do that is in a function called moveFish(fish f){..}

It's on lines 92-102.

Thirdly, I'd like to say the following:

If i press the left mouse button and if the button pressed was in between a certain bound for height and width,

then the fishes will move away from the point at which it's clicked.

This is what I have so far but i'm not even sure if the syntax for this is right:

if (mousePressed){

if (mouseButton == RIGHT){

if((mouseX>=TANK_LEFT)&& (mouseX<=TANK_RIGHT)){

(do something here)

}

}

}

if (mousePressed){

if (mouseButton == RIGHT){

if(mouseY>=WATER_TOP)&& (mouseY<=WATER_TOP)){

(do something here)

}

}

}
2. int randw = (int)random(30, 50);
3. int randh = (int)random(randw-20, randw);
5. fish f1;
7. class fish{
8. int x, y;
9. int h;
10. int w;
11. float dir;
12. int r;
13. int g;
14. int b;
15. float spd;
17. fish(int p1, int p2, int p3, int p4, int p5, int p6, int p7, int p8, int p9){
18. x = p1;
19. y = p2;
20. h = p3;
21. w = p4;
22. dir = p5;
23. r = p6;
24. g = p7;
25. b = p8;
26. spd = p9;
27. }
28. }
30. //useful constants for Assigment 2
31. final int TANK_LEFT = 100;
32. final int TANK_RIGHT = 900;
33. final int WATER_TOP = 300;
34. final int WATER_BOTTOM = 700;
36. void setup(){
37. size(1000, 800);
38. // The 1 fish to draw
40. f1 = new fish(
41. (int)random(TANK_LEFT+randw, TANK_RIGHT-(randw/2)),
42. (int)random(WATER_TOP, WATER_BOTTOM -(randh/2)),
43. (int)random(randw-20, randw),
44. (int)random(30, 50),
45. (int)random(360),
46. (int)random(0, 256),
47. (int)random(0, 256),
48. (int)random(0, 256),
49. (int)random(3,7)
50. );
51. }
53. void draw(){
55. background(255,255,255);
56. makeFish(f1);
57. moveFish(f1);
58. }
60. void makeFish(fish f) {
61. stroke(0);
62. fill(f.r, f.g, f.b);
63. ellipse(f.x, f.y, f.w, f.h); //body
65. int tail; //x-offset for tail's connection to the body
66. /*basically what i'm saying here is that if the direction variable has a number between
67. 90 degrees and 270 degrees, then the fish faces left. For all other values it faces right*/
68. if (radians((f.dir)60) > PI*0.5 && radians((f.dir)60) < PI*1.5) { //facing left
69. tail = (f.w/2); //tail is to the right of the body
71. //draw an eye on the left side of the head
72. fill(255);
73. ellipse(f.x-(f.w*.25), f.y-(f.h*.25), 10, 10);
74. fill(0);
75. ellipse(f.x-(f.w*.25), f.y-(f.h*.25), 5, 5);
77. }
78. else { //facing right
79. tail = -(f.w/2); //tail is to the left of the body
81. //draw an eye on the right side of the head
82. fill(255);
83. ellipse(f.x+(f.w*.25), f.y-(f.h*.25), 10, 10);
84. fill(0);
85. ellipse(f.x+(f.w*.25), f.y-(f.h*.25), 5, 5);
86. }
87. //draw the tail using the offset calculated above
88. fill(f.r, f.g, f.b);
89. triangle(f.x+tail, f.y, (f.x+(2*tail)), (f.y+(f.h/2)), (f.x+(2*tail)), (f.y-(f.h/2)));
90. }
92. void moveFish(fish f){
93. //uses trigonometry for f.x and f.y
94. f.x = f.x + int(f.spd*cos(radians((f.dir)60)));
95. f.y = f.y + int(f.spd*sin(radians((f.dir)60)));
97. //check to see if fish collides with borders and adjust accordingly
98. if ((f.x + f.w/2 >= TANK_RIGHT) || (f.x - f.w/2 <=TANK_LEFT))
99. f.dir = PI - radians((f.dir)60);
100. if ((f.y + f.h/2 >= WATER_BOTTOM) || (f.y - f.h/2 <=WATER_TOP))
101. f.dir = radians((-f.dir));
102. }

Help with my error please. " expecting EOF, found 'if' "

[4 Replies]
- 15-May-2012 08:27 AM
- Forum: Programming Questions
2. void setup() {
3. size(1000,1000);
5. fish(250,250,80,40,23,64,232,1);
8. }
9. int d;
11. if (d=1){
12. void fish(int xOffset, int yOffset, float xBody, float yBody, int r, int g, int b, int d) {
13. fill(r,g,b);
14. ellipse(250 + xOffset,250 + yOffset,xBody,yBody); //body of the fish
15. triangle(250 - xBody/2 + xOffset, 250 + yOffset, 250 - xBody/2 - yBody*sqrt(3)/2 + xOffset, 250 - yBody/2 + yOffset, 250 - xBody/2 - yBody*sqrt(3)/2 + xOffset, 250 + yBody/2 + yOffset); //tail of the fish
16. fill(255);
17. ellipse(250 + (0.25)*(xBody)+ xOffset,250 - (0.25)*(yBody) + yOffset,2*sqrt(xBody*yBody/128),2*sqrt(xBody*yBody/128)); // sclera of the fish (white part of the eye)
18. fill(0);
19. //ellipse(250 + 0.5*sqrt((xBody+yBody)*(xBody-yBody)) + xOffset,250 - (yBody*yBody/xBody) + sqrt(xBody*yBody/128) + yOffset,2*sqrt(xBody*yBody/pow(2,9)),2*sqrt(xBody*yBody/pow(2,9))); //iris of the fish
20. ellipse(250 + (0.25)*(xBody)+ xOffset,250 - (0.25)*(yBody) + yOffset,2*sqrt(xBody*yBody/pow(2,9)),2*sqrt(xBody*yBody/pow(2,9)));
21. }
22. }
23. else if(d=0) {
24. void fish(int xOffset, int yOffset, float xBody, float yBody, int r, int g, int b, int d) {
25. fill(r,g,b);
26. ellipse(250 + xOffset,250 + yOffset,xBody,yBody); //body of the fish
27. triangle(250 + xBody/2 + xOffset, 250 + yOffset, 250 + xBody/2 + yBody*sqrt(3)/2 + xOffset, 250 - yBody/2 + yOffset, 250 + xBody/2 + yBody*sqrt(3)/2 + xOffset, 250 + yBody/2 + yOffset); //tail of the fish
28. fill(255);
29. ellipse(250 - (0.25)*(xBody)+ xOffset,250 - (0.25)*(yBody) + yOffset,2*sqrt(xBody*yBody/128),2*sqrt(xBody*yBody/128)); // sclera of the fish (white part of the eye)
30. fill(0);
31. //ellipse(250 + 0.5*sqrt((xBody+yBody)*(xBody-yBody)) + xOffset,250 - (yBody*yBody/xBody) + sqrt(xBody*yBody/128) + yOffset,2*sqrt(xBody*yBody/pow(2,9)),2*sqrt(xBody*yBody/pow(2,9))); //iris of the fish
32. ellipse(250 - (0.25)*(xBody)+ xOffset,250 - (0.25)*(yBody) + yOffset,2*sqrt(xBody*yBody/pow(2,9)),2*sqrt(xBody*yBody/pow(2,9)));
33. }
34. }
So basically when I try to run this code, I get an error saying " expecting EOF, found 'if' "

I've only been programming for 1 week now but i'm not sure if what i'm doing is even possible or if it's more of a language issue that i'm saying.

Basically what i want this to do is the following. I have to draw a fish.

um i have a parameter called "d" If I put in a "1", I want the fish to have a "right" orientation. However if i put in a "0", I want the fish to have a "left" orientation. I think I can do this with an if statement

because there's only 2 states right? left and right. I can say if the "d" value is "1" then draw a fish with a right orientation.

(Now this part i'm not sure... ) else if "d" value is "0" then draw a fish with a left orientation.

Please help =/

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