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annotate pytouhou/game/eclrunner.py @ 42:1b0ca2fb89f9

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Refactor ECL parsing/etc.
author Thibaut Girka <thib@sitedethib.com>
date Thu, 18 Aug 2011 22:11:39 +0200
parents e3ba2fa966f6
children 7195aaf95f6e
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444ac7bca7bc Refacto ECL stuff, add support for a few instructions, and add some culling
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1 class ECLRunner(object):
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2 def __init__(self, ecl, sub, frame=0, instruction_pointer=0, implementation=None):
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3 self.ecl = ecl
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4
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5 self.labels = {}
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6 self.implementation = {4: (self.set_label),
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7 3: (self.goto)}
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8 if implementation:
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9 self.implementation.update(implementation)
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11 self.sub = sub
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12 self.frame = frame
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13 self.instruction_pointer = instruction_pointer
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15
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16 def set_label(self, label, count):
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17 self.labels[label & 0xffff] = (self.sub, self.instruction_pointer, count)
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19
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20 def goto(self, frame, instruction_pointer, label):
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21 try:
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22 sub, instruction_pointer, count = self.labels[label & 0xffff]
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23 except KeyError:
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24 pass
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25 else:
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26 count -= 1
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27 if count:
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28 self.labels[label & 0xffff] = sub, instruction_pointer, count
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29 else:
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30 del self.labels[label & 0xffff]
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31 self.frame = frame
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32 self.sub, self.instruction_pointer = sub, instruction_pointer
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35 def update(self):
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36 frame = self.frame
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37 try:
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38 while frame <= self.frame:
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39 frame, instr_type, rank_mask, param_mask, args = self.ecl.subs[self.sub][self.instruction_pointer]
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41 if frame == self.frame:
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42 try:
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43 callback = self.implementation[instr_type]
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44 except KeyError:
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45 print('Warning: unhandled opcode %d!' % instr_type) #TODO
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46 else:
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47 callback(*args)
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48 if frame <= self.frame:
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49 self.instruction_pointer += 1
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50 except IndexError:
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51 pass #TODO: script ended, destroy enemy
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53 self.frame += 1
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54