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--- spcs:2015:day5 [2015/07/09 17:28]
ffpaladin
+++ spcs:2015:day5 [2015/07/09 19:24]
ffpaladin
@@ Line 74: / Line 74: @@
 </code>
+<code java>
+// Example: Two Car objects
+Car myCar1;
+Car myCar2; // Two objects!
+void setup() {
+  size(200,200);
+  // Parameters go inside the parentheses when the object is constructed.
+  myCar1 = new Car(color(255,0,0),0,100,2);
+  myCar2 = new Car(color(0,0,255),0,10,1);
+}
+void draw() {
+  background(255);
+  myCar1.drive();
+  myCar1.display();
+  myCar2.drive();
+  myCar2.display();
+}
+// Even though there are multiple objects, we still only need one class.
+// No matter how many cookies we make, only one cookie cutter is needed.
+class Car {
+  color c;
+  float xpos;
+  float ypos;
+  float xspeed;
+  // The Constructor is defined with arguments.
+  Car(color tempC, float tempXpos, float tempYpos, float tempXspeed) {
+    c = tempC;
+    xpos = tempXpos;
+    ypos = tempYpos;
+    xspeed = tempXspeed;
+  }
+  void display() {
+    stroke(0);
+    fill(c);
+    rectMode(CENTER);
+    rect(xpos,ypos,20,10);
+  }
+  void drive() {
+    xpos = xpos + xspeed;
+    if (xpos > width) {
+      xpos = 0;
+    }
+  }
+}
+</code>
+<code java>
+int x, y;
+void setup()
+{
+  size (500,500);
+}
+void draw()
+{
+  ellipse(x,y,20,20);
+  if ((key == 'd') && (keyPressed))
+  {
+    x++;
+  }
+  else if (key == 's')
+  {
+    y++;
+  }
+}
+</code>

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