class World:
def __init__(self,width=500,height=400,color="white",title="Simulated World"):
self._canvas = Canvas(width,height,color,title)
self._canvas.setAutoRefresh(False)
self._star = None
self._controller = None
self._timestamp = 0
def getWidth(self):
return self._canvas.getWidth()
def getHeight(self):
return self._canvas.getHeight()
def setController(self,controller):
self._controller = controller
def getGravity(self):
if self._controller:
return self._controller.getGravity()
else:
return 0.0
def getStar(self):
return self._star
def _setStar(self,star):
if (self._star):
self._canvas.remove(star)
self._star = star
star.setDepth(0)
self._canvas.add(star)
self._canvas.refresh()
def add(self,updatable):
try:
updatable.advance # note this is not a call, just a check to see if advance exists
except:
raise StandardError, "You may only add objects which support an appropriate 'advance' method"
self._timestamp += 1
updatable.setDepth(self._timestamp)
self._canvas.add(updatable)
self._canvas.refresh()
def remove(self, obj):
self._canvas.remove(obj)
def numObj(self):
return len(self._canvas.getContents())
def _mainloop(self):
more = True
while more:
# global debug
# if debug:
# print "within world's mainloop"
objects = self._canvas.getContents() # latest list of objects
for obj in objects:
obj.advance(self)
self._canvas.refresh()
if self._controller:
more = self._controller.processDelay(self)
