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Array or For loop??

[1 Reply]
- 10-Dec-2012 06:07 PM
- Forum: General Discussion
Hi,
I'm working on a game and I want to throw obstacles across the screen. I have a "box" class for the obstacles and each time one goes out of the sketch, a new box should come from the opposite side. I'm using a class so that when the first ten or so pass, I can increase the level to make them go faster, etcetera.

What kind of function will allow me to create a new instance of the box class each time the previous box leaves the sketch?

I'm guessing I would need to create an array of boxes for the first level and have the for loop control the incrementation of the array?

how can I make this work?

keyPressed problem

[3 Replies]
- 10-Dec-2012 11:23 AM
- Forum: Programming Questions
Hi, I'm working on a very simple game and have a temporary character at the bottom that should move up and down when the UP and DOWN keys are pressed. For some reason the character will not move when the keys are pressed and I'm not sure why. Any suggestions?

float spdx, spdy;

float gravity;

float damping;

float xpos,ypos;

float px, py;

void setup(){

size(800,600);

background(200,200,255);

fill(100,255,100);

rect(0,500,800,100);

cloud(100,100);

cloud(300,200);

cloud(500,150);

cloud(550,100);

cloud(450,100);

cloud(450,300);

player(100,475);

}

void draw(){

if(keyPressed == true){

if(key == CODED){

if(keyCode == UP){

py = py + 25;

}

if(keyCode == DOWN){

py = py-25;

}

}

}

}

void cloud(float xpos, float ypos){

noStroke();

fill(255);

ellipse(xpos,ypos,40,40);

ellipse(xpos-20,ypos+15,40,40);

ellipse(xpos-15,ypos+15,40,40);

ellipse(xpos+25,ypos-15,40,40);

ellipse(xpos+40,ypos,100,40);

ellipse(xpos+45,ypos+30,40,40);

ellipse(xpos+10,ypos+30,40,40);

ellipse(xpos+60,ypos+20,40,40);

ellipse(xpos+80,ypos+20,65,40);

}

void player(float px, float py){

noStroke();

fill(255,255,0);

ellipse(px,py,50,50);

fill(0);

ellipse(px-10,py-10,5,5);

ellipse(px+10,py-10,5,5);

bezier(px-15,py+5,px-10,py+20,px+10,py+20,px+15,py+5);

}

how do I subtract one 3D shape from another to make a hole?

[2 Replies]
- 18-Sep-2012 05:20 PM
- Forum: Programming Questions
I'm writing a program to have a ball bounce into a hole in a large box.
I'm rendering in P3D and want to make the hole without using vertexes.

How can I use a boolean function to subtract a cylinder from the box?

the code for the box is:

void _box(){

strokeWeight(3);

stroke(0);

fill(100,100,255);

translate(width/2,height/2+100);

beginShape(QUADS);

//right side

       vertex(300,0,200);

      vertex(300,0,-200);

      vertex(300,125,-200);

      vertex(300,125,200);

//left side

      vertex(-300,0,200);

      vertex(-300,0,-200);

      vertex(-300,125,-200);

      vertex(-300,125,200);

//top

      vertex(300,0,200);

      vertex(300,0,-200);

      vertex(-300,0,-200);

      vertex(-300,0,200);

//bottom

      vertex(300,125,200);

vertex(300,125,-200);

      vertex(-300,125,-200);

      vertex(-300,125,200);

//back

      vertex(300,0,200);

      vertex(300,125,200);

      vertex(-300,125,200);

      vertex(-300,0,200);

//front

      vertex(300,0,-200);

      vertex(300,125,-200);

      vertex(-300,125,-200);

      vertex(-300,0,-200);

endShape(CLOSE);

}

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