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Topic: 0046: random() failing inside classes (p46) (Read 316 times) |
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Glen Murphy
 
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0046: random() failing inside classes (p46)
« on: Dec 2nd, 2002, 6:45am » |
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While I've used random() in other projects often without fail, if I uncomment the 'float r = random(50);', the applet window fails to appear, with no error messages.
(this code is a mutilated version of working code, just to show the error).
////////////////////////
int WIDTH = 500;
int HEIGHT = 500;
int NUMMINES = 6;
Mine mine[] = new Mine[NUMMINES];
class Mine {
int NUMSPOKES = 12;
float x, y, size;
Spoke spoke[] = new Spoke[NUMSPOKES];
Mine(float xIn, float yIn, float sizeIn) {
x = xIn;
y = yIn;
size = sizeIn;
for(int i = 0; i < NUMSPOKES; i++) {
//float r = random(50);
spoke[i] = new Spoke(size+i, i*5, i);
}
}
}
class Spoke {
float dist, dir, dirVel;
Spoke(float distIn, float dirIn, float dirVelIn) {
}
}
void setup() {
size(500,500);
ellipseMode(CENTER_DIAMETER);
for(int i = 0; i < NUMMINES; i++) {
mine[i] = new Mine(random(0,WIDTH), random(0,HEIGHT), random(10,30));
}
}
void loop() {
}
//////////////////////////
(edit: added version number to title, for future reference)
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| « Last Edit: Dec 9th, 2002, 6:00am by Glen Murphy » |
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REAS
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Re: random() failing inside classes (p46)
« Reply #1 on: Dec 2nd, 2002, 6:23pm » |
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Yes, I've just recently seen this too. It only fails within the constructor. For a temporary workaround, you can make a new class method (that is called in the constructor) for setting your random values.
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fry
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Re: random() failing inside classes (p46)
« Reply #2 on: Dec 2nd, 2002, 8:09pm » |
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that's really odd.. i'll look into it.
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Glen Murphy
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Re: 0046: random() failing inside classes (p46)
« Reply #3 on: Dec 10th, 2002, 11:15pm » |
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In addition, the same thing happens when using print / println within a constructor.
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fry
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Re: 0046: random() failing inside classes (p46)
« Reply #4 on: Aug 15th, 2003, 6:48pm » |
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the p5 functions inside constructors issue should now be taken care of (as of 57/5
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