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annotate pytouhou/game/laser.py @ 281:13dcde917083

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Fix bullet spawning along lasers.
author Thibaut Girka <thib@sitedethib.com>
date Fri, 10 Feb 2012 11:01:11 +0100
parents 3539520fff93
children 18e4ed141dd8
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1 # -*- encoding: utf-8 -*-
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2 ##
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3 ## Copyright (C) 2012 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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14
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15 from math import cos, sin, pi
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16
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17 from pytouhou.vm.anmrunner import ANMRunner
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18 from pytouhou.game.sprite import Sprite
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19
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20
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21 STARTING, STARTED, STOPPING = range(3)
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22
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23
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24 class Laser(object):
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25 def __init__(self, base_pos, laser_type, sprite_idx_offset,
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26 angle, speed, start_offset, end_offset, max_length, width,
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27 start_duration, duration, stop_duration,
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28 grazing_delay, grazing_extra_duration,
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29 game):
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30 self._game = game
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31 #TODO: aux sprite
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32 self._sprite = None
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33 self._anmrunner = None
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34 self._removed = False
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35 self._laser_type = laser_type
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36 self.state = STARTING
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37
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38 #TODO: hitbox
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39
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40 self.frame = 0
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41 self.start_duration = start_duration
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42 self.duration = duration
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43 self.stop_duration = stop_duration
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44 self.grazing_delay = grazing_delay
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45 self.grazing_extra_duration = grazing_extra_duration
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46
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47 self.sprite_idx_offset = sprite_idx_offset
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48 self.base_pos = base_pos
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49 self.x, self.y = 0, 0
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50 self.angle = angle
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51 self.speed = speed
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52 self.start_offset = start_offset
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53 self.end_offset = end_offset
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54 self.max_length = max_length
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55 self.width = width
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56
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57 self.set_anim()
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58
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59
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60 def set_anim(self, sprite_idx_offset=None):
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61 if sprite_idx_offset is not None:
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62 self.sprite_idx_offset = sprite_idx_offset
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63
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64 lt = self._laser_type
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65 self._sprite = Sprite()
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66 self._sprite.angle = self.angle
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67 self._anmrunner = ANMRunner(lt.anm_wrapper, lt.anim_index,
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68 self._sprite, self.sprite_idx_offset)
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69 self._anmrunner.run_frame()
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70
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71
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72 def get_bullets_pos(self):
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73 #TODO: check
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74 length = min(self.end_offset - self.start_offset, self.max_length)
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75 offset = self.end_offset - length
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76 dx, dy = cos(self.angle), sin(self.angle)
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77 while self.start_offset <= offset < self.end_offset:
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78 yield (self.base_pos[0] + offset * dx, self.base_pos[1] + offset * dy)
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79 offset += 48.
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80
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81
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82 def cancel(self):
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83 if self.state != STOPPING:
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84 self.frame = 0
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85 self.state = STOPPING
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86
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87
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88 def update(self):
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89 if self._anmrunner is not None and not self._anmrunner.run_frame():
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90 self._anmrunner = None
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91
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92 self.end_offset += self.speed
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93
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94 length = min(self.end_offset - self.start_offset, self.max_length) # TODO
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95 if self.state == STARTING:
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96 if self.frame == self.start_duration:
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97 self.frame = 0
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98 self.state = STARTED
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99 else:
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100 width = self.width * float(self.frame) / self.start_duration #TODO
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101 if self.state == STARTED:
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102 width = self.width #TODO
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103 if self.frame == self.duration:
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104 self.frame = 0
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105 self.state = STOPPING
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106 if self.state == STOPPING:
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107 if self.frame == self.stop_duration:
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108 width = 0.
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109 self._removed = True
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110 else:
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111 width = self.width * (1. - float(self.frame) / self.stop_duration) #TODO
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112
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113 offset = self.end_offset - length / 2.
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114 self.x, self.y = self.base_pos[0] + offset * cos(self.angle), self.base_pos[1] + offset * sin(self.angle)
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115 self._sprite.width_override = width or 0.01 #TODO
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116 self._sprite.height_override = length or 0.01 #TODO
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117
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118 self._sprite.update_orientation(pi/2. - self.angle, True)
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119 self._sprite._changed = True #TODO
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120
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121 self.frame += 1
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122