Differential D2716 Diff 9119 extern/audaspace/bindings/python/examples/siren2.py

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				#!/usr/bin/python
				import aud, math, time
				length = 0.5
				fadelength = 0.05
				runtime = 10
				distance = 100
				velocity = 2 * distance / runtime

				device = aud.Device()
				high = aud.Sound.sine(880).limit(0, length).fadein(0, fadelength).fadeout(length - fadelength, length)
				low = aud.Sound.sine(700).limit(0, length).fadein(0, fadelength).fadeout(length - fadelength, length).volume(0.6)
				sound = high.join(low)
				handle = device.play(sound)
				handle.loop_count = -1

				handle.velocity = [velocity, 0, 0]

				start = time.time()

				while time.time() - start < runtime:
				location = -distance + velocity * (time.time() - start)

				handle.location = [location, 10, 0]