def __init__(self,name):
self.allObjects = pygame.sprite.LayeredDirty()
bgimage = ImageHandler()[name]
self.physicalSize = Vect(float(bgimage.get_width())/PIXELS_PER_METER,float(bgimage.get_height())/PIXELS_PER_METER)
self.drawDebug = False
world_bounds = Box2D.b2AABB()
world_bounds.lowerBound = (0,0)
world_bounds.upperBound = (self.physicalSize[0],self.physicalSize[1])
doSleep = True
self.physicsWorld = Box2D.b2World(world_bounds, GRAVITY, doSleep)
self.listener = MyListener()
self.listener.test = self
self.physicsWorld.SetContactListener(self.listener)
self.points=[]
self.background = None
class RenderableObject(pygame.sprite.DirtySprite):
def __init__(self,physicalPosition,physicsWorld,imageName,hasPhysics=True,isStatic=False,canRotate=True,userData=""):
pygame.sprite.DirtySprite.__init__(self)
self.image = ImageHandler()[imageName] # Returns a pygame surface
width = self.image.get_width()
height = self.image.get_height()
self.rect = pygame.Rect(0,0,width,height)
if not isinstance(physicalPosition, Vect):
physicalPosition = Vect(*physicalPosition)
self.physicalPosition = physicalPosition
self.physicsWorld = physicsWorld
self.hasPhysics = hasPhysics
if self.hasPhysics:
self._buildPhysics(width,height,canRotate,isStatic)
self.body.SetUserData(userData)
def _buildPhysics(self,width,height,canRotate,isStatic,friction=FRICTION):
bodyDef = Box2D.b2BodyDef()
bodyDef.position = (self.physicalPosition[0],self.physicalPosition[1])
bodyDef.fixedRotation = not canRotate
bodyDef.linearDamping = 0.15
self.body = self.physicsWorld.CreateBody(bodyDef)
#self.body.SetUserData(self)
shapeDef = Box2D.b2PolygonDef()
shapeDef.SetAsBox((width / 2.0) / PIXELS_PER_METER, (height / 2.0) / PIXELS_PER_METER)
if isStatic:
shapeDef.density = 0
else:
shapeDef.density = DENSITY
shapeDef.linearDamping = AIR_RESISTANCE
shapeDef.friction = friction
self.body.CreateShape(shapeDef)
self.body.SetMassFromShapes()
def update(self, msSinceLast):
'''
Overrides Sprite update
'''
if Viewport().hasMoved:
self.rect.center = Viewport().convertPhysicalToPixelCoords(self.__physicalPosition)
self.dirty = 1
if self.hasPhysics:
newPhysicalPosition = Vect(self.body.position.x,self.body.position.y)
if newPhysicalPosition != self.physicalPosition:
self.physicalPosition = newPhysicalPosition
def __setPhysicalPosition(self,value):
self.__physicalPosition = value
self.rect.center = Viewport().convertPhysicalToPixelCoords(value)
self.dirty = 1
def __getPhysicalPosition(self):
return self.__physicalPosition
physicalPosition = property(__getPhysicalPosition,__setPhysicalPosition)
def __setPixelPosition(self,value):
self.rect.move_ip(*value)
self.__physicalPosition = Viewport().convertPixelsToPhysicalCoords(self.rect.center)
def __getPixelPosition(self):
return (self.rect.left,self.rect.top)
pixelPosition = property(__getPixelPosition,__setPixelPosition)
