Adding Flashes class

.gitignore

@@ -1 +1,3 @@
-build-tmp/
+build-tmp/
+*.sublime-project
+*.sublime-workspace

Flashes.pde

@@ -0,0 +1,58 @@
+class Flashes extends Effect{
+
+	ArrayList <Flash> flashes;
+
+	Flashes(int _millis){
+		super(_millis);
+		flashes = new ArrayList();
+	}
+
+	void update(){
+		super.update();
+
+		// make a new flash every frame
+		Flash newF = new Flash();
+		flashes.add(newF);
+
+		// clear out finished flashes. Update the others
+		for(int i=flashes.size()-1; i>=0; i--){
+			Flash f = flashes.get(i);
+			if(f.isDead()){
+				flashes.remove(i);
+			} else {				
+				f.update();
+
+				imageBuffer.beginDraw();
+				// load buffer's pixels in to pixel[] array
+				imageBuffer.loadPixels();
+				imageBuffer.pixels[f.id] = color(f.value);
+				// load pixel[] array back into image
+				imageBuffer.updatePixels();
+				imageBuffer.endDraw();	
+			}
+		}
+	}
+
+	// starts a pixel at 255 brightness. Fade to zero
+	class Flash{
+		int id;
+		float value;
+
+		float dimSpeed = .90;
+		Flash(){
+			id = floor(random(LEDCount));
+			value = 90;
+		}
+
+		void update(){
+			value *= dimSpeed;
+		}
+
+		boolean isDead(){
+			if(value < 1){
+				return true;
+			}
+			return false;
+		}
+	}
+}