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annotate pytouhou/utils/interpolator.pyx @ 316:f0be7ea62330

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Fix a bug with ECL instruction 96, and fix overall ECL handling. The issue with instruction 96 was about death callbacks, being executed on the caller of instruction 96 instead of the dying enemies. This was introduced by changeset 5930b33a0370. Additionnaly, ECL processes are now an attribute of the Enemy, and death/timeout conditions are checked right after the ECL frame, even if the ECL script has already ended, just like in the original game.
author Thibaut Girka <thib@sitedethib.com>
date Thu, 29 Mar 2012 21:18:35 +0200
parents fab7ad2f0d8b
children d778db08190f
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1 # -*- encoding: utf-8 -*-
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2 ##
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3 ## Copyright (C) 2011 Thibaut Girka <thib@sitedethib.com>
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4 ##
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5 ## This program is free software; you can redistribute it and/or modify
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6 ## it under the terms of the GNU General Public License as published
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7 ## by the Free Software Foundation; version 3 only.
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8 ##
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9 ## This program is distributed in the hope that it will be useful,
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10 ## but WITHOUT ANY WARRANTY; without even the implied warranty of
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11 ## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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12 ## GNU General Public License for more details.
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13 ##
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16 class Interpolator(object):
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17 __slots__ = ('values', 'start_values', 'end_values', 'start_frame', 'end_frame', '_frame', '_formula')
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18 def __init__(self, values=(), start_frame=0, end_values=(), end_frame=0, formula=None):
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19 self.values = tuple(values)
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20 self.start_values = tuple(values)
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21 self.end_values = tuple(end_values)
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22 self.start_frame = start_frame
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23 self.end_frame = end_frame
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24 self._frame = 0
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25 self._formula = formula or (lambda x: x)
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28 def __nonzero__(self):
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29 return self._frame < self.end_frame
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32 def set_interpolation_start(self, frame, values):
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33 self.start_values = tuple(values)
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34 self.start_frame = frame
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37 def set_interpolation_end(self, frame, values):
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38 self.end_values = tuple(values)
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39 self.end_frame = frame
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42 def set_interpolation_end_frame(self, end_frame):
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43 self.end_frame = end_frame
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46 def set_interpolation_end_values(self, values):
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47 self.end_values = tuple(values)
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50 def update(self, frame):
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51 self._frame = frame
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52 if frame >= self.end_frame - 1: #XXX: skip the last interpolation step
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53 # This bug is replicated from the original game
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54 self.values = self.end_values
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55 self.start_values = self.end_values
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56 self.start_frame = frame
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57 else:
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58 coeff = self._formula(float(frame - self.start_frame) / float(self.end_frame - self.start_frame))
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59 self.values = [start_value + coeff * (end_value - start_value)
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60 for (start_value, end_value) in zip(self.start_values, self.end_values)]
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