Master

FunctionChallenge/FunctionChallenge.pde

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+//declare variables
+float x;
+float y;
+float diam;
+float v;
+
+void setup(){
+  //set canvas size and background
+  size(800,600);
+  background(0);
+
+  //initialize variables
+  x = width/2;
+  y = height/2;
+  diam = 50;
+  v = random(-7,7);
+}
+
+void draw(){
+  background(0);
+  //color ellipse
+  stroke(20,50,20);
+  fill(20,50,20);
+  //call mouseGravity function
+  gravity(.1);
+
+  //draw ellipse
+  ellipse(x,y,diam,diam);
+
+  //draw crosshairs by calling "crosshair" function
+  crosshair(50,mouseX,mouseY,15,5,25,150,200);
+
+  //have ellipse bounce off of the canvas' floor
+  if(y + diam/2 > height){
+    y = height - diam/2;
+    v = -v;
+  }
+
+  //set a given number to forty two, print it in the console, and answer the ultimate question by calling the "fortyTwo" function
+  fortyTwo(9001);
+}
+
+//create gravity to create gravity with a given strength
+void gravity(float g){
+  //add gravity to velocity
+  v += g;
+  //add velocity to the ball's y-position
+  y += v;
+}
+
+//create crosshair function to draw crosshairs at a given location
+void crosshair(float d, float xi, float yi, float l, float w, float r, float g, float b){
+  //color crosshairs
+  stroke(r,g,b);
+  fill(r,g,b);
+
+  //draw center of crosshairs
+  ellipse(xi,yi,d/4,d/4);
+
+  //draw rectangles around crosshairs
+  rectMode(CENTER);
+  rect(xi, yi + l + w, w, l);
+  rect(xi, yi - l - w, w, l);
+  rect(xi + l + w, yi, l, w);
+  rect(xi - l - w, yi, l, w);
+}
+
+//create fortyTwo function to set a given number to forty two in a circuitious way
+void fortyTwo(float num){
+  println("What do you get when you multiply six by nine?");
+
+  //use an overly circuitous route to set the function to print 42
+  num /= num;
+  num = num * 60;
+  num = num * 7;
+  num = num / 10;
+  println(num);
+
+  println("'I always thought there was something fundamentaly wrong with the universe...'");
+}