Collect circle using square

Processing Coding Questions
1

so far i have this and i need help in making the circle get collected

      int x;
int y;
float circleX;
float circleY;
int points = 0;

 
void setup(){
  textSize(20);
  size (400, 400);
  x = width/2;
  y = height/2;
  circleX = random(0,400);
  circleY = random(0,400);
}
 
void draw(){
  background(0,255,0);
 fill(255,0,0);
  rect(x, y, 20,20);
        fill(255,255,0); 
 ellipse(circleX, circleY, 6,6);
fill(0);
text("Score :" + points, 0,20);
}
void keyPressed() {
   if ((keyPressed == true) && (key == CODED)) {
    if (keyCode == UP){
     y --;
    } else if (keyCode == DOWN) {
      y ++;
    } else if (keyCode == LEFT){
      x --;
    } else if (keyCode == RIGHT) {
      x ++;
    }  
    
      

    }
//collision with circle
if((x >= circleX && y >= circleY)){
}else if( x <= circleX && y <= circleY){
   ellipse(circleX, circleY, 6,6);
points++;

  }
}
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2

@jeremydouglass has an old post at this thread linking to this page which you should probably read

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3

ok, this is the complete code.

int x;
int y;
float circleX;
float circleY;
int points = 0;


void setup() {
  textSize(20);
  size (400, 400);
  x = width/2;
  y = height/2;
  circleX = random(0, 400);
  circleY = random(0, 400);
  rectMode(CENTER);
}

void draw() {
  background(0, 255, 0);
  fill(255, 0, 0);
  rect(x, y, 20, 20);
  fill(255, 255, 0); 
  ellipse(circleX, circleY, 6, 6);
  fill(0);
  text("Score :" + points, 0, 20);
}
void keyPressed() {
  if ((keyPressed == true) && (key == CODED)) {
    if (keyCode == UP) {
      y --;
    } else if (keyCode == DOWN) {
      y ++;
    } else if (keyCode == LEFT) {
      x --;
    } else if (keyCode == RIGHT) {
      x ++;
    }
  }
  //collision with circle
  if(is_player_on_coin()){
    points++;
    circleX = random(width);
    circleY = random(height);
  }
}

boolean is_player_on_coin(){
  float d = dist(x, y, circleX, circleY);
  //we assuming the player as a circle
  // player radius = 10
  // circle radius = 3
  if(d < 3 + 10){ 
    return true;
  }
  return false;
}
1 Like
4

I still don’t get it

5

…what don’t you get?

6

this is how the distance between two circle calculatedq1solnpic

solve the distance using pythagorean theorem
download

if the distance less than player radius + coin radius, then the player is on coin

2 Likes