Added Pong

Author: milanocookies93

animations/pong/main.py

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+#Written by Milan Dasgupta
+
+from Queue import Queue
+import time
+from animations import FadeAnimation
+import sys
+from oscapi import ColorsOut
+
+
+def check_speed(curr, speed, end): #Helper function that keeps the ball in bounds
+	delta = 1
+	if curr + speed >= end:
+		delta = -1
+
+	if curr + speed <= -1:
+		delta = -1
+
+	return delta * speed
+
+if __name__ == "__main__":
+	MAX_X = 6		   #Width and length of Chroma
+        MAX_Y = 8
+	tailsize = 4		   #Size of ping-pong ball's tail
+	speed = 15.		   #Speed of the Ball
+
+	green_x = 0		   #The Ball starts at (0,0) going bottom-right
+	green_y = 0
+	green_dir_x = 1
+        green_dir_y = 1
+	
+	off = (0.0,0.0,0.0)        #We define three states the lights can be in
+	half = (0.0, 512.0, 0.0)
+	green = (0.0, 1023.0, 0.0)
+	pix = []		   #Set up data structures that hold light information
+	x_vals = Queue(maxsize=tailsize)
+	y_vals = Queue(maxsize=tailsize)
+	out = FadeAnimation()	   #Set up the fade animation
+	out.FADERATE = 1.0
+	out.start()
+	
+	for i in range(MAX_X * MAX_Y):
+                pix.append(off)	   #Turns Off all Lights
+	x_vals.put(green_x)	   #Put the first light on the array and turns it on
+	y_vals.put(green_y)
+	pix[(green_y * MAX_X) + green_x] = green
+        out.write(pix)
+
+	while True:
+		time.sleep(1/speed)	#Sleeps to keep the animation running at speed
+
+		green_dir_x = check_speed(green_x, green_dir_x, MAX_X)	#Find the next direction we're going
+                green_dir_y = check_speed(green_y, green_dir_y, MAX_Y)
+		pix[(green_y * MAX_X) + green_x] = half		#Set the last light to half
+		if x_vals.full():				#If we're at tailsize, we turn off the last light in the tail
+			pix[(y_vals.get() * MAX_X) + x_vals.get()] = off
+                green_x += green_dir_x				#Set coordinates to the next light
+                green_y += green_dir_y
+		if (green_x == 0 and green_y == 0) or (green_x == MAX_X-1 and green_y == MAX_Y-1):
+			 while not x_vals.empty():		#If we're in a corner, we turn off the tail
+				pix[(y_vals.get() * MAX_X) + x_vals.get()] = off
+		x_vals.put(green_x)	#Put the new coordinates on the queue
+		y_vals.put(green_y)
+                pix[(green_y * MAX_X) + green_x] = green	#Turn on the light
+
+        	out.write(pix)

animations/pong/manifest.json

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+{
+	"name":"Pong",
+        "description":"Bouncing green ping-pong ball",
+        "creator":"Milan Dasgupta"
+}
+