class Viewport(object):
def __init__(self, w, h, worldW, worldH):
self.position = Position(0,0)
self.worldW = worldW
self.worldH = worldH
self.redraw(w,h)
def getX(self):
return self.position.getX()
def getY(self):
return self.position.getY()
def getX2(self):
return self.position.getX() + self.w
def getY2(self):
return self.position.getY() + self.h
def redraw(self, w, h):
self.w = w
self.h = h
self.focusX = w/2
self.focusY = h/2
self.maxX = self.worldW - self.w
self.maxY = self.worldH - self.h
def move(self, centerx, centery):
minx = self.position.x + self.focusX
miny = self.position.y + self.focusY
if centerx < minx:
self.position.x = self.position.x - (minx-centerx)
if centery < miny:
self.position.y = self.position.y - (miny-centery)
if centerx > minx:
self.position.x = self.position.x + (centerx - minx)
if centery > miny:
self.position.y = self.position.y + (centery - miny)
self.clamp()
def clamp(self):
if self.position.x < 0:
self.position.x = 0
if self.position.y < 0:
self.position.y = 0
if self.position.x > self.maxX:
self.position.x = self.maxX
if self.position.y > self.maxY:
self.position.y = self.maxY
def __init__(self, w, h, worldW, worldH):
self.position = Position(0,0)
self.worldW = worldW
self.worldH = worldH
self.redraw(w,h)
