enemy = GameObject(
  x = 0,
  y = 0,
  name="enemy"
)
SpriteBehaviour.Attach(enemy,
  texture="alien1",
  scale=2
)
PhysicsBehaviour.Attach(enemy)
EnemyBehaviour.Attach(enemy)
#etc.

enemy = EntitySpawner.Spawn("enemy")

texmap = {
'kisschicklogo' : [0, 0, 500, 300],
'ming' : [501, 0, 202, 162],
'ship' : [704, 0, 32, 32],
'alien' : [737, 0, 32, 32],
'alien_shadow' : [770, 0, 32, 32],
'fighter' : [803, 0, 32, 32],
'sheep' : [836, 0, 32, 32],
'star' : [869, 0, 20, 20],
'star2' : [890, 0, 20, 20],
'bullet' : [911, 0, 4, 4],
'beerman_logo' : [0, 301, 477, 305],
}

#Beercave Gamews Beerware license v1.0
#This code is free to use for anything you want.
#If you find it useful, I'd appreciate it if you buy me a beer :)
#See http://www.beercave.co.uk/content/beerware for details
 
#quick and dirty spritesheet packer
#based on http://www.blackpawn.com/texts/lightmaps/default.html
import os, pygame, glob
from operator import itemgetter
 
 
class SpritePacker():
	def __init__(self, **kwargs):
		#defaults for input/output folders and texture size
		self.folder = kwargs.get("folder", "input")
		self.outfolder = kwargs.get("outfolder", "output")
		self.texturew = kwargs.get("texturew", 1024)
		self.textureh = kwargs.get("textureh", 1024)
	def Pack(self):
		patterns = ["*.gif", "*.png", "*.bmp"]
		#check for files in folder
		print os.path.abspath(self.folder)
		result = []
		for pattern in patterns:
			pattern = os.path.join(self.folder, pattern)
			result.extend(glob.glob(pattern))
 
		if len(result) == 0:
			print "No files in input folder!"
			return
		#build a new texture
		print "processing %d files:" % len(result)
 
		texture = pygame.Surface((self.texturew, self.textureh), pygame.SRCALPHA, 32)
		NodeTree = Node(texture, 0, 0, self.texturew, self.textureh)
		#sort our sprites by size
		sprites = []
		for filepath in result:
			head, tail = os.path.split(filepath)
			filename = tail
			spritename, ext = os.path.splitext(tail)
			surface = pygame.image.load(filepath)
			x,y = surface.get_rect().size
			size = x*y #area should work as a proxy for size unless we get some badly out of proportion sprites
			sprites.append([filepath, spritename, size])
 
		sprites.sort(key = itemgetter(2), reverse=True)
 
		print sprites
		for filepath, spritename, size in sprites:
			surface = pygame.image.load(filepath)
			print "Inserting %s - %s" %(spritename, surface)
			NodeTree.Insert(surface, spritename)
 
		#save the finished texture to outfolder
		outfile = os.path.join(self.outfolder, "texture.png")
		mapfile = os.path.join(self.outfolder, "texmap.py")
		pygame.image.save(texture, outfile)
		print "texture written to %s" % outfile
 
		#now dump the list of nodes
		map = NodeTree.Dump(True) + "}"
		with open(mapfile, 'w') as f:
			f.write(map)
		print "texture map written to %s" % mapfile
class Node():
	def __init__(self, texture, x, y, w, h):
		print "Creating node %d, %d, %d, %d" %(x,y,w,h)
		self.texture = texture
		self.bottom = None
		self.right = None
		self.rect = [x,y,w,h]
		self.imagerect = [0,0,0,0]
		self.image = None
	def Insert(self, surface, name):
		if self.image != None:
			print "node at %s contains %s. Adding to child node" % (self.rect, self.image)
			result = self.AddChild(surface, name)
			if not result:
				print "Could not add %s!" %name
			return result
 
		x,y,myw,myh = self.rect
		rect = surface.get_rect()
		print "image size : (%d,%d)" % rect.size
		w,h =  rect.size
		#add some padding around sprites
		h += 1
		w += 1
		if w > myw or h > myh:
			print "Node too small!"
			return False
		print "adding to node at %s" % self.rect
		self.texture.blit(surface, (x,y))
		self.image = name
		self.imagerect = [x,y,w-1,h-1]
		print self.imagerect
		#generate ChildNodes
		dw = myw - w
		dh = myh - h
		if dw > dh:
			self.right = Node(self.texture, x+w, y, dw, myh)
			self.bottom = Node(self.texture, x, y+h, w, dh)
		else:
			self.right = Node(self.texture, x+w, y, dw, h)
			self.bottom = Node(self.texture, x, y+h, myw, dh)
		return True
 
	def AddChild(self, surface, name):
		if not self.right.Insert(surface, name):
			return self.bottom.Insert(surface, name)
		return True
 
	#dump structure
	#{"filename" : [x,y,w,h],
	#}
	def Dump(self, first = False):
		#print "Dumping node"
		if self.image == None:
			return ""
 
		result = "'%s' : %s,\n" % (self.image, self.imagerect)
		if first: result = "texmap = {\n%s" %result
		result += self.right.Dump()
		result += self.bottom.Dump()
		return result
packer = SpritePacker()
packer.Pack()

input = Input()
while running:
  input.Poll()
 
  ship.x += input.GetControl('THRUST')
  ship.y += input.GetControl('CLIMB')
  if input.GetControl('FIRE')
    ship.fire()
 
  if input.GetControl('QUIT'):
    running = False
 
  render()

#Beercave Gamews Beerware license v1.0
#This code is free to use for anything you want.
#If you find it useful, I'd appreciate it if you buy me a beer :)
#See http://www.beercave.co.uk/content/beerware for details
import pygame 
from pygame.locals import * 
 
#wrapper class for all input methods
#maps controllers to named controls, eg 'FIRE', 'JUMP' etc
#keeps all that nasty control handling code out of the game classes
#call GetControl(CONTROL_NAME) to check the control state in game
 
#clamp value to a min/max range	
def clamp(sourceval, minval, maxval):
	return max(min(sourceval, maxval), minval)
 
class Input():
	def __init__(self, **kwargs):
		#mappings for keydowns, key states and axis positions
		#format is controlname : [list of [source, (arguments...)]] 
		#multiple inputs can all map to the same control
 
		#key/button press events (1,0)
		#identifies if a key/button was pressed this frame
		#['keyevent'], (KEY_ID,)] where KEY_ID is the pygame key id
		#['buttonevent', (STICK_ID, BUTTON_ID)]
		#['mouseevent', (BUTTON_ID)]
		#stickevent tracks whether the joystick was moved in a given 
		#direction this frame. Threshold parameter allows for
		#filtering out of small movements
		#['stickevent', (STICK_ID,AXIS_ID,DIRECTION,THRESHOLD)]
 
		#key/button states (1,0)
		#identifies if a key/button is currently pressed
		#['keystate'], (KEY_ID,)]
		#['buttonstate', (STICK_ID, BUTTON_ID)]
 
		#axis mappings
		#track a joystick axis
		#can also map keyboard controls to a virtual axis so
		#the game code doesn't need to know whether it's
		#dealing with keys or a controller
		#['keyaxis'], (+KEY_ID, -KEY_ID)] 
		#+KEY_ID is mapped to the positive axis direction
		#-KEY_ID is mapped to the negative axis direction
		#['stickaxis', (STICK_ID, AXIS_ID,)]
		#use '-stickaxis' to invert axis values
 
		self.controlMap = {
			'QUIT' : [['keyevent', (K_ESCAPE,)]],
			'PAUSE' : [['keyevent', (K_p,)]],
			'START' : [
					['keyevent', (K_SPACE,)],
					['keyevent', (K_RETURN,)],
					['buttonevent', (0,0)]
					],
			'TEST' : [['keyevent', (K_SPACE,)]],
			'OPTIONS' : [['keyevent', (K_o,)]],
			'SCREENSHOT' : [['keyevent', (K_RCTRL,)]],
			'THRUST' : [
					['keyaxis', (K_RIGHT, K_LEFT)],
					['stickaxis', (0,0)]
					],
			'FIRE' : [['keyevent', (K_LCTRL,)],
				['keyevent', (K_z,)],
				['mouseevent', (1,)],
				['mouseevent', (2,)],
				['mouseevent', (3,)],
				['buttonevent', (0,0)]
				],
			'FIRE2' : [
					['keyevent', (K_LSHIFT,)],
					['keyevent', (K_c,)],
					['buttonevent', (0,1)]
				],
			'TURN' : [
					['keyevent', (K_x,)],
					['buttonevent', (0,2)]
				],
			'CLIMB' : [
					['keyaxis', (K_UP, K_DOWN)],
					['-stickaxis', (0,1,)]
					],
			'STICK1' : [
					['-stickaxis', (0,0,)]
					],
			'STICK2' : [
					['-stickaxis', (0,1,)]
					],
			'UP' : [
				['keyevent', (K_UP, )],
				['stickevent', (0,1,-1,.5)]
				],
			'DOWN' : [
				['keyevent', (K_DOWN, )],
				['stickevent', (0,1,1,.5)]
					],
			'RIGHT' : [
				['keyevent', (K_RIGHT, )],
				['stickevent', (0,0,1,.5)]
				],
			'LEFT' : [
				['keyevent', (K_LEFT, )],
				['stickevent', (0,0,-1,.5)]
					],
			'FLINGX' : [['mousedir', (0,)]],
			'FLINGY' : [['mousedir', (1,)]]
		}
		self.Mouse = [0,0]
		#state for all keys
		self.keys = pygame.key.get_pressed()
		#did event happen this frame for all keys
		self.keyevents = [0] *323
		#all key events this frame
		self.keyspressed = []
		#all mouse events this frame
		self.mouseevents = [0] * 4
		#button press events this frame
		self.buttonevents = [[0]*20]
		#state of all joysticks in the system
		self.stickStates = []
 
 
		self.InitSticks()
		self.gesturetime = 0
		self.gesturex = 0
		self.gesturey = 0
 
	#update the input states
	#your game engine should call this every frame
	#for mouse control to work pass time elapsed this frame as dt
	def Poll(self, dt=0):
		keyevents = pygame.event.get(pygame.KEYDOWN)
		mouseevents = pygame.event.get(pygame.MOUSEBUTTONDOWN)
		stickevents = pygame.event.get(pygame.JOYAXISMOTION)
		buttonevents = pygame.event.get(pygame.JOYBUTTONDOWN)
 
		#clear the events list from the previous frame
		self.keyevents = [0] *323
		self.mouseevents = [0] * 4
		sticks = self.stickCount
		for i in range(0,sticks):
			state = self.stickStates[i]
			axes = state['numaxes'] 
			buttons = state['numbuttons'] 
			state['axisevents'] = [0] * axes
			state['buttonevents'] = [0] * buttons
			state['axes'] = [0.] * axes
 
		#move all pressed keys to an array - will save 
		#iterating over the list every time we check
		#for a keypress
		for event in keyevents:
			self.keyevents[event.key] = True
 
		#all keyevents this frame
		#exposing this is useful for situations where we want to know
		#all the keys that were pressed - ie for handling text input
		self.keyspressed = keyevents
 
		self.keys = pygame.key.get_pressed()
 
		for event in mouseevents:
			self.mouseevents[event.button] = True
 
		for event in stickevents:
			self.stickStates[event.joy]['axisevents'][event.axis] = event.value
 
		for event in buttonevents:
			self.stickStates[event.joy]['buttonevents'][event.button] = True
 
		self.CheckMouse(dt)
 
		self.CheckSticks()
		pygame.event.clear()
 
	#check the system for attached joysticks and initialise
	def InitSticks(self):
		sticks = pygame.joystick.get_count()
		self.stickCount = sticks
		self.stickStates = []
		for i in range(0,sticks):
			state = {}
			state['stick'] = stick =pygame.joystick.Joystick(i)
			stick.init()
			state['name'] = stick.get_name()
			state['numbuttons'] = buttons = stick.get_numbuttons()
			state['numaxes'] = axes  = stick.get_numaxes()
			state['buttonstates'] = [0] * buttons
			state['axes'] = [0.] * axes
			state['axisevents'] = [0] * axes
			state['buttonevents'] = [0] * buttons
			self.stickStates.append(state)
 
	#poll all joysticks for state
	def CheckSticks(self):
		sticks = self.stickCount
		for i in range(0,sticks):
			state = self.stickStates[i]
			stick = state['stick']
			buttons = state['numbuttons']
			axes = state['numaxes']
 
			for k in range(0, axes):
				state['axes'][k] = stick.get_axis(k)
 
	#poll mouse for state
	def CheckMouse(self,dt):
		#basic mouse gestures
		relx,rely = pygame.mouse.get_rel()
 
		#clear the axes so we don't report a movement every frame
		self.Mouse = [0,0]
		#check we've moved a decent amount
		if relx*relx+rely*rely > 10:
			self.gesturetime += dt
			self.gesturex += relx
			self.gesturey += rely
 
		elif self.gesturetime > 0:
			#a gesture just ended
			#change the velocity
			self.Mouse = [self.gesturex, -self.gesturey]
			self.gesturetime = 0
			self.gesturex = 0
			self.gesturey = 0
			return
 
	#call this to get the state of a defined control
	def GetControl(self, name):
		mappings = self.controlMap.get(name, None)
		result = 0.
		for map in mappings:
			source, args = map
			if source == 'keyevent':
				key, = args
				result += self.GetKeyEvent(key)
			if source == 'buttonevent':
				stick,button = args
				result += self.GetButtonEvent(stick, button)
			if source == 'mouseevent':
				button, = args
				result += self.GetMouseEvent(button)
			if (source == 'keystate'):
				key, = args
				result += self.GetKeyState(key)
			if (source == 'keyaxis'):
				key1,key2 = args
				result += self.GetKeyAxis(key1, key2)
			if (source == 'stickaxis'):
				stick, axis = args
				val = self.GetStickAxis(stick, axis)
				result += val
			if (source == '-stickaxis'):
				stick, axis = args
				val = -self.GetStickAxis(stick, axis)
				result += val
			if (source == 'stickevent'):
				stick, axis, direction, threshold = args
				result += self.GetStickEvent(stick, axis, direction, threshold)
			if (source == 'mousedir'):
				axis, = args
				#mouse axis overrules alternatives if in use
				return self.GetMouseAxis(axis)
		return clamp(result, -1, 1)
 
	#functions to handle different control mappings
	def GetKeyEvent(self, key):
		return self.keyevents[key]
 
	def GetButtonEvent(self, stick, button):
		if self.stickCount <= stick: return False 
		return self.stickStates[stick]['buttonevents'][button]
 
	def GetStickEvent(self, stick, axis, direction, threshold):
		if self.stickCount <= stick: return False 
		value = self.stickStates[stick]['axisevents'][axis]
		return value * direction > threshold
 
	def GetMouseEvent(self, button):
		return self.mouseevents[button]
 
	def GetKeyState(self, key):
		return self.keys[key]
 
	def GetKeyAxis(self, key1, key2):
		keys = self.keys
		val1 = 1. if self.keys[key1] else 0.
		val2 = -1. if self.keys[key2] else 0.
		return val1 + val2
 
	def GetStickAxis(self, stick, axis):
		if self.stickCount <= stick: return 0. 
		state = self.stickStates[stick]
		pos = state['axes'][axis]
		return pos
 
	def GetMouseAxis(self, axis):
		return self.Mouse[axis]/1000.