Sloppy Platform Engine

import osimport rabbytfrom rabbyt import lerp, wrapfrom math import cos,sin,pi,sqrt,atan2from random import *import pygamefrom pygame.locals import *#setup windowpygame.init() pygame.display.set_mode((640, 480), pygame.OPENGL | pygame.DOUBLEBUF) rabbyt.set_viewport((640, 480))rabbyt.set_default_attribs()def collidelist_add(list):	for instance in list:			sprites.append(instance)def collidelist_remove(list):	for instance in list:		if instance in sprites:			sprites.remove(instance)#create pSprite classclass pSprite(rabbyt.Sprite):	def __init__(self,x=0,y=0,sprite=None,shape=None,gravity=0):		rabbyt.Sprite.__init__(self,x=x,y=y,texture=sprite,shape=shape)		self.speed=0		self.direction=0		self.gravity=gravity	def motion_add(self,adddir,addspeed):		cx1=addspeed*cos(adddir*(pi/180))		cy1=addspeed*sin(adddir*(pi/180))		cx2=self.speed*cos(self.direction*(pi/180))		cy2=self.speed*sin(self.direction*(pi/180))		nx,ny=(cx1+cx2,cy1+cy2)		self.speed=sqrt(nx*nx+ny*ny)		atta=atan2(ny,nx)		self.direction=atta*(180/pi)	def xspeed(self,newxspeed):		theta=sin(self.direction*(pi/180))		if abs(theta) < 0.0001: theta=0		yspeed=self.speed*theta		self.direction=atan2(yspeed,newxspeed)*(180/pi)		self.speed=sqrt(newxspeed*newxspeed+yspeed*yspeed)	def yspeed(self,newyspeed):		theta = cos(self.direction*(pi/180))		if abs(theta) < 0.0001: theta=0		xspeed=self.speed*theta		self.direction=atan2(newyspeed,xspeed)*(180/pi)		self.speed=sqrt(xspeed*xspeed+newyspeed*newyspeed)	def getxspeed(self):		theta=round(cos(self.direction*(pi/180))*10000)/10000		return self.speed*theta	def getyspeed(self):		theta=round(sin(self.direction*(pi/180))*10000)/10000		return self.speed*theta	def place_free(self,newx,newy):		hit = 1		tempx=self.x		tempy=self.y		self.x=newx		self.y=newy		collisions = rabbyt.collisions.aabb_collide(sprites)		for pSpr1,pSpr2 in collisions:    			if (isinstance(pSpr1,player) and isinstance(pSpr2,block)) or (isinstance(pSpr2,player) and isinstance(pSpr1,block)):				hit = 0				break		self.x=tempx		self.y=tempy		return hit	def move_contact(self,dir,iter):		for n in range(0,iter*2):			if self.place_free(self.x+cos(dir*(pi/180))*0.5,self.y+sin(dir*(pi/180))*0.5):				self.x+=cos(dir*(pi/180))*0.5				self.y+=sin(dir*(pi/180))*0.5			else:				break	def update(self):		if self.rot>360: self.rot-=360		if self.rot<0: self.rot+=360		if self.direction>360: self.direction-=360		if self.direction<0: self.direction+=360		self.x=self.x+self.getxspeed()		self.y=self.y+self.getyspeed()		if self.gravity > 0: self.motion_add(270,self.gravity)	def handle_collision(self,other):passclass player(pSprite):	def __init__(self,x=0,y=0,sprite=None,shape=None,gravity=0):		pSprite.__init__(self,x,y,sprite,shape,gravity)		self.maxxspeed=3		self.grav=0.25		self.xaccel = 0.5		self.rgb=(.7,.3,.6)	def update(self):		pSprite.update(self)		if pygame.key.get_focused:			keys = pygame.key.get_pressed()			if self.place_free(self.x+self.getxspeed(),self.y):				if keys[K_LEFT]: self.xspeed(self.getxspeed()-self.xaccel)				if keys[K_RIGHT]: self.xspeed(self.getxspeed()+self.xaccel)			if keys[K_UP]:				if not self.place_free(self.x,self.y-1):					self.yspeed(7)			if not keys[K_RIGHT] and not keys[K_LEFT]:				self.xspeed(self.getxspeed()*(0.6+0.3*self.place_free(self.x,self.y-1)))		if abs(self.getyspeed()) < 0.0001: self.yspeed(0)										#limit speeds _before_ calculations?		if abs(self.getxspeed()) < 0.0001: self.xspeed(0)		if abs(self.getxspeed()) > self.maxxspeed: self.xspeed(self.maxxspeed*self.getxspeed()/abs(self.getxspeed()))		self.xspeed(round(self.getxspeed()*1000)/1000)		self.yspeed(round(self.getyspeed()*1000)/1000)		if self.place_free(self.x,self.y+self.getyspeed()) and self.place_free(self.x+self.getxspeed(),self.y):	#handles weird collision,			if not self.place_free(self.x+self.getxspeed(),self.y+self.getyspeed()):					#running into the wall/floor diagonally				self.xspeed(0)		if self.place_free(self.x,self.y-1):												#handles gravity			self.gravity=self.grav		if not self.place_free(self.x,self.y+self.getyspeed()):									#handles vertical collision			self.move_contact(atan2(self.getyspeed(),0)*(180/pi),40)			self.yspeed(0)			self.gravity=0			if not self.place_free(self.x,self.y-1):				self.y=round(self.y)		if not self.place_free(self.x+self.getxspeed(),self.y):									#handles horizontal collision			self.move_contact(atan2(0,self.getxspeed())*(180/pi),self.maxxspeed)class block(pSprite):	def __init__(self,x=0,y=0,sprite=None,shape=None,gravity=0):		pSprite.__init__(self,x,y,sprite,shape,gravity)		self.rgb=(.2,.3,.4)	def update(self):		pSprite.update(self)sprites=[]player1=player(y=-97,x=-100,shape=(-8,8,8,-8))sprites.append(player1)b=block(y=-180,shape=(-160,8,8,-8))sprites.append(b)b2=block(y=-100,x=-50,shape=(-8,8,8,-8))sprites.append(b2)#the gameloopkeepRunning = TruespawnTime = 40c = pygame.time.Clock()last_fps = 0while keepRunning:	#messagepump	for event in pygame.event.get():		if event.type == QUIT:			keepRunning = False		elif event.type == KEYDOWN:			if event.key == K_ESCAPE:				keepRunning = False	#FPS	c.tick()	if pygame.time.get_ticks() - last_fps > 1000:		#print "FPS: ", c.get_fps()		last_fps = pygame.time.get_ticks()	#collision	collisions = rabbyt.collisions.brute_force(sprites)	for pSpr1,pSpr2 in collisions:    		pSpr1.handle_collision(pSpr2)		pSpr2.handle_collision(pSpr1)	#the actual rendering code	rabbyt.clear() #clear the screen	for sprite in sprites[:]:		sprite.update()		sprite.render()	pygame.display.flip() #flip the buffers