Re: [pygame] Framerate Normalizer

["Jake b" <ninmonkeys@xxxxxxxxx>]

You can define movement speed per second. That way every computer
moves X pixels/sec ( and faster computers still get the benefit of
more FPS )

Ie: velocity = 10 pixels/sec , or rotation = 90degrees/sec

Then calculate how much to move based on the users FPS:

# fps.py
class FPS():
	def __init__(self):
		# FPS() calc's delta ( AKA: fps_elapsed )
		self.ticks_cur = pygame.time.get_ticks()
		self.ticks_last = pygame.time.get_ticks()
		
	def tick(self):
		"""call once each game-loop to calculate .delta"""		
		# calculate delta
		self.ticks_cur = pygame.time.get_ticks()		
		self.delta = ( self.ticks_cur - self.ticks_last ) / 1000.0
		self.ticks_last = self.ticks_cur

# unit.py
class Unit():
	def update(self):
		"""update physics / etc. for all units."""

		# delta is what you multiple your speed per second by
		delta = self.fps.delta
		
		# in my example: .vel, .accel are euclid.Vector2()
		self.vel += self.accel * delta
		new_loc = self.loc + self.vel * delta


-- 
Jake