def buildDistributionRects(tmxmap, layer, gid=None):
"""
generate a set of non-overlapping rects that represents the distribution
of the specfied gid. if gid is not passed, then will choose one.
useful for collision detection
"""
import maputils
if gid == None:
gid = tmxmap.gidmap[tmxmap.tilesets[layer].firstgid]
layer_data = tmxmap.getLayerData(layer)
p = product(xrange(tmxmap.width), xrange(tmxmap.height))
points = [(x, y) for (x, y) in p if layer_data[y][x] == gid]
rects = maputils.simplify(points, tmxmap.tilewidth, tmxmap.tileheight)
return rects
def buildDistributionRects(tmxmap, layer, gid=None):
"""
generate a set of non-overlapping rects that represents the distribution
of the specfied gid. if gid is not passed, then will choose one.
useful for collision detection
"""
import maputils
if gid == None:
gid = tmxmap.gidmap[tmxmap.tilesets[layer].firstgid]
layer_data = tmxmap.getLayerData(layer)
p = product(xrange(tmxmap.width), xrange(tmxmap.height))
points = [ (x,y) for (x,y) in p if layer_data[y][x] == gid ]
rects = maputils.simplify(points, tmxmap.tilewidth, tmxmap.tileheight)
return rects
def makeCollisionLayer(self, layer, gid=None):
"""
Builds a Quadtree for collision detection using tiles from the
specified layer and tile. The quadtree can be queried for collisions
between a rect and the layer, but not between objects in the layer.
The quad tree reduces the number of checks that must be made and is
overall better than a brute force collision check.
"""
import quadtree
import maputils
if gid == None:
gid = self.data.gidmap[self.data.tilesets[-1].firstgid]
layer_data = self.data.getLayerData(layer)
p = product(range(self.data.width),range(self.data.height))
points = [ (x,y) for (x,y) in p if layer_data[y][x] == gid ]
rects=maputils.simplify(points,self.data.tilewidth,self.data.tileheight)
self.collisionQuadtree = quadtree.QuadTree(rects, 8)
msg = "Tileset must be either a int or string. got: {}"
raise ValueError, msg.format(type(tileset))
gid = None
if real_gid:
try:
gid, flags = tmxmap.mapGID(real_gid)[0]
except KeyError, IndexError:
msg = "GID #{} not found"
raise ValueError, msg.format(real_gid)
if isinstance(layer, int):
layer_data = tmxmap.getLayerData(layer).data
elif isinstance(layer, str):
try:
layer = [ l for l in tmxmap.layers if l.name == layer ].pop()
layer_data = layer.data
except IndexError:
msg = "Layer \"{}\" not found in map {}."
raise ValueError, msg.format(layer, tmxmap)
p = product(xrange(tmxmap.width), xrange(tmxmap.height))
if gid:
points = [ (x,y) for (x,y) in p if layer_data[y][x] == gid ]
else:
points = [ (x,y) for (x,y) in p if layer_data[y][x] ]
rects = maputils.simplify(points, tmxmap.tilewidth, tmxmap.tileheight)
return rects
