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annotate pytouhou/game/particle.pyx @ 791:a29122662cde

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utils: Simplify translate_2d and align Mat4 to 16 bytes This lowers the amount of instructions from 61 to 32 on PowerPC with AltiVec, and from 25 to 14 on amd64 with AVX2.
author Link Mauve <linkmauve@linkmauve.fr>
date Sat, 17 Jan 2026 14:19:58 +0100
parents cd8a2baf468c
children
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rev   line source
631
cd8a2baf468c Move Particle to its own module, to not pollute pytouhou.game.effect.
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1 # -*- encoding: utf-8 -*-
cd8a2baf468c Move Particle to its own module, to not pollute pytouhou.game.effect.
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2 ##
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3 ## Copyright (C) 2015 Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
cd8a2baf468c Move Particle to its own module, to not pollute pytouhou.game.effect.
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4 ##
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5 ## This program is free software; you can redistribute it and/or modify
cd8a2baf468c Move Particle to its own module, to not pollute pytouhou.game.effect.
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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.
cd8a2baf468c Move Particle to its own module, to not pollute pytouhou.game.effect.
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13 ##
cd8a2baf468c Move Particle to its own module, to not pollute pytouhou.game.effect.
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14
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15 from pytouhou.game.game cimport Game
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16
cd8a2baf468c Move Particle to its own module, to not pollute pytouhou.game.effect.
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17
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18 cdef class Particle(Effect):
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19 def __init__(self, pos, index, anm, long amp, Game game, bint reverse=False, long duration=24):
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20 Effect.__init__(self, pos, index, anm)
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21
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22 self.frame = 0
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23 self.duration = duration
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24
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25 random_pos = (self.x + amp * game.prng.rand_double() - amp / 2,
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26 self.y + amp * game.prng.rand_double() - amp / 2)
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27
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28 if not reverse:
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29 self.pos_interpolator = Interpolator((self.x, self.y), 0,
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30 random_pos, duration, formula=(lambda x: 2. * x - x ** 2))
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31 else:
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32 self.pos_interpolator = Interpolator(random_pos, 0,
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33 (self.x, self.y), duration, formula=(lambda x: 2. * x - x ** 2))
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34 self.x, self.y = random_pos
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35
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36
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37 cpdef update(self):
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38 Effect.update(self)
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39
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40 self.pos_interpolator.update(self.frame)
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41 self.x, self.y = self.pos_interpolator.values
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42
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43 self.frame += 1