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@l1am9111
Created October 19, 2011 20:51
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Python GTA: SA Path Reader
from struct import unpack
from cStringIO import StringIO
class SAPath():
def __init__(self, node):
self.path = StringIO(open(node, "rb").read())
self.header = {}
self.pathnodes = []
self.navinodes = []
self.links = []
self.navilinks = []
self.linklengths = []
self._offset = 20
# headers
self.header['nodes'] = unpack('I', self.path.read(4))[0]
self.header['vehnodes'] = unpack('I', self.path.read(4))[0]
self.header['pednodes'] = unpack('I', self.path.read(4))[0]
self.header['navinodes'] = unpack('I', self.path.read(4))[0]
self.header['links'] = unpack('I', self.path.read(4))[0]
def Headers(self):
return self.header
def Paths(self):
if len(self.pathnodes) != self.header['nodes']:
self.path.seek(self._offset, 0)
for i in range(self.header['nodes']):
self.pathnodes.append({})
self.pathnodes[i]['mem'] = unpack('I', self.path.read(4))[0]
self.pathnodes[i]['zero'] = unpack('I', self.path.read(4))[0]
self.pathnodes[i]['x'] = float(unpack('h', self.path.read(2))[0]) / 8
self.pathnodes[i]['y'] = float(unpack('h', self.path.read(2))[0]) / 8
self.pathnodes[i]['z'] = float(unpack('h', self.path.read(2))[0]) / 8
self.pathnodes[i]['unknown'] = unpack('h', self.path.read(2))[0]
self.pathnodes[i]['link'] = unpack('h', self.path.read(2))[0]
self.pathnodes[i]['area'] = unpack('h', self.path.read(2))[0]
self.pathnodes[i]['node'] = unpack('h', self.path.read(2))[0]
self.pathnodes[i]['width'] = unpack('b', self.path.read(1))[0] / 8
self.pathnodes[i]['type'] = unpack('b', self.path.read(1))[0]
self.pathnodes[i]['flags'] = unpack('I', self.path.read(4))[0]
return self.pathnodes
def NaviNodes(self):
if len(self.navinodes) != self.header['navinodes']:
self.path.seek(self._offset + (self.header['nodes'] * 28), 0)
for i in range(self.header['navinodes']):
self.navinodes.append({})
self.navinodes[i]['x'] = float(unpack('h', self.path.read(2))[0]) / 8
self.navinodes[i]['y'] = float(unpack('h', self.path.read(2))[0]) / 8
self.navinodes[i]['area'] = unpack('h', self.path.read(2))[0]
self.navinodes[i]['node'] = unpack('h', self.path.read(2))[0]
self.navinodes[i]['disx'] = float(unpack('b', self.path.read(1))[0]) / 8
self.navinodes[i]['disy'] = float(unpack('b', self.path.read(1))[0]) / 8
self.navinodes[i]['flags'] = unpack('I', self.path.read(4))[0]
return self.navinodes
def Links(self):
if len(self.links) != self.header['links']:
self.path.seek(self._offset + (self.header['nodes'] * 28) + (self.header['navinodes'] * 14), 0)
for i in range(self.header['links']):
self.links.append({})
self.links[i]['area'] = unpack('h', self.path.read(2))[0]
self.links[i]['node'] = unpack('h', self.path.read(2))[0]
return self.links
def NaviLinks(self):
if len(self.navilinks) != self.header['links']:
self.path.seek(self._offset + (self.header['nodes'] * 28) + (self.header['navinodes'] * 14) + (self.header['links'] * 4) + 768, 0)
for i in range(self.header['links']):
self.navilinks.append(unpack('h', self.path.read(2))[0])
return self.navilinks
def LinkLengths(self):
if len(self.linklengths) != self.header['links']:
self.path.seek(self._offset + (self.header['nodes'] * 28) + (self.header['navinodes'] * 14) + (self.header['links'] * 4) + 768 + (self.header['links'] * 2), 0)
for i in range(self.header['links']):
self.linklengths.append(unpack('b', self.path.read(1))[0])
return self.linklengths
def Close(self):
self.path.close()
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