/* donatello_v3.pde
   Edited by Justin Hsia (orig. Larry Synder)
   
   Draws multiple abstracted Teenage Mutant Ninja Turtles.
   We use separate variables to control their horizontal movements.
   Using the modulus operator, make one Donatello wrap from right-to-left.
*/

int x1 = 0;    // x-position of Donatello 1
int x2 = 460;  // x-position of Donatello 2


void setup() {
  size(500,500);  // set drawing canvas size
  noStroke();     // no outlines
}


// draw Donatellos moving
void draw() {
  background(255,245,220);   // paint over drawing canvas
  
  donatello(x1);
  donatello(x2);
  
  // update body positions (change increment/decrement to change speed)
  x1 = (x1 + 3) % 460;  // move right, but wrap around once right edge encountered
  x2 = max(x2 - 1, 0);  // move left, but stop at edge
}


// draw Donatello
void donatello(int x_pos) {
  fill(0,100,0);           // dark green
  rect(x_pos,182,40,15);   // top of head
  
  fill(88,44,141);         // purple
  rect(x_pos,197,40,6);    // bandana mask
  
  fill(0,100,0);           // dark green
  rect(x_pos,203,40,20);   // bottom of head
  
  fill(219,136,0);         // dark yellow
  rect(x_pos,223,40,50);   // shell
  
  fill(0,100,0);           // dark green
  rect(x_pos,273,40,45);   // lower body
}