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annotate pytouhou/game/bullet.py @ 122:174324a4da51

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Add support for launch animations! (Warning: slow :()
author Thibaut Girka <thib@sitedethib.com>
date Sat, 10 Sep 2011 01:26:30 +0200
parents 4300a832f033
children d1c82d43bbf3
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rev   line source
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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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14
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15 from math import cos, sin, atan2, pi
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16
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17 from pytouhou.utils.interpolator import Interpolator
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18 from pytouhou.vm.anmrunner import ANMRunner
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19 from pytouhou.game.sprite import Sprite
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20
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21
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22 class Bullet(object):
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23 def __init__(self, pos, type_idx, sprite_idx_offset,
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24 angle, speed, attributes, flags, player, game_state):
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25 self._game_state = game_state
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26 self._sprite = None
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27 self._anmrunner = None
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28 self._removed = False
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29 self._launched = False
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30 self._bullet_type = game_state.bullet_types[type_idx]
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31
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32 self.speed_interpolator = None
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33 self.frame = 0
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34 self.grazed = False
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35
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36 self.player = player
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37
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38 self.sprite_idx_offset = sprite_idx_offset
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39
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40 self.flags = flags
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41 self.attributes = list(attributes)
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42
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43 self.x, self.y = pos
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44 self.angle = angle
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45 self.speed = speed
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46 dx, dy = cos(angle) * speed, sin(angle) * speed
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47 self.delta = dx, dy
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48
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49 #TODO
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50 if flags & 14:
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51 bt = self._bullet_type
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52 if flags & 2:
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53 index = bt.launch_anim2_index
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54 launch_mult = bt.launch_anim_penalties[0]
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55 elif flags & 4:
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56 index = bt.launch_anim4_index
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57 launch_mult = bt.launch_anim_penalties[1]
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58 else:
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59 index = bt.launch_anim8_index
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60 launch_mult = bt.launch_anim_penalties[2]
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61 self.launch_delta = dx * launch_mult, dy * launch_mult
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62 self._sprite = Sprite()
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63 self._anmrunner = ANMRunner(bt.anm_wrapper,
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64 index, self._sprite,
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65 bt.launch_anim_offsets[sprite_idx_offset])
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66 self._anmrunner.run_frame()
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67 else:
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68 self.launch()
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69
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70 self._sprite.angle = angle
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71
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72
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73 def is_visible(self, screen_width, screen_height):
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74 tx, ty, tw, th = self._sprite.texcoords
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75 if self._sprite.corner_relative_placement:
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76 raise Exception #TODO
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77
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78 max_x = tw / 2.
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79 max_y = th / 2.
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80
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81 if any((max_x < self.x - screen_width,
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82 max_x < -self.x,
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83 max_y < self.y - screen_height,
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84 max_y < -self.y)):
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85 return False
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86 return True
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87
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88
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89 def set_anim(self, sprite_idx_offset=None):
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90 if sprite_idx_offset is not None:
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91 self.sprite_idx_offset = sprite_idx_offset
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92
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93 bt = self._bullet_type
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94 self._sprite = Sprite()
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95 self._sprite.angle = self.angle
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96 self._anmrunner = ANMRunner(bt.anm_wrapper, bt.anim_index,
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97 self._sprite, self.sprite_idx_offset)
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98 self._anmrunner.run_frame()
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99
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100
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101 def launch(self):
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102 self._launched = True
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103 self.update = self.update_full
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104 self.set_anim()
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105 if self.flags & 1:
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106 self.speed_interpolator = Interpolator((self.speed + 5.,), 0,
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107 (self.speed,), 16)
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108
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109
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110 def update(self):
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111 dx, dy = self.launch_delta
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112 self.x += dx
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113 self.y += dy
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114
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115 self.frame += 1
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116
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117 if not self._anmrunner.run_frame():
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118 self.launch()
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119
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120
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121 def update_simple(self):
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122 dx, dy = self.delta
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123 self.x += dx
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124 self.y += dy
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125
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126
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127 def update_full(self):
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128 sprite = self._sprite
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129
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130 if self._anmrunner is not None and not self._anmrunner.run_frame():
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131 self._anmrunner = None
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132
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133 #TODO: flags
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134 x, y = self.x, self.y
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135 dx, dy = self.delta
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136
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137 if self.flags & 16:
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138 frame, count = self.attributes[0:2]
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139 length, angle = self.attributes[4:6]
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140 angle = self.angle if angle < -900.0 else angle #TODO: is that right?
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141 dx, dy = dx + cos(angle) * length, dy + sin(angle) * length
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142 self.delta = dx, dy
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143 if self.frame == frame: #TODO: include last frame, or not?
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144 if count > 0:
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145 self.attributes[1] -= 1
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146 self.frame = 0
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147 else:
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148 self.flags ^= 16
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149 elif self.flags & 32:
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150 #TODO: check
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151 frame, count = self.attributes[0:2]
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152 acceleration, angular_speed = self.attributes[4:6]
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153 self.speed += acceleration
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154 self.angle += angular_speed
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155 dx, dy = cos(self.angle) * self.speed, sin(self.angle) * self.speed
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156 self.delta = dx, dy
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157 sprite.angle = self.angle
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158 if sprite.automatic_orientation:
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159 sprite._changed = True
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160 if self.frame % frame == 0:
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161 if count > 0:
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162 self.attributes[1] -= 1
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163 else:
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164 self.flags ^= 32
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165 elif self.flags & 448:
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166 #TODO: check
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167 frame, count = self.attributes[0:2]
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168 angle, speed = self.attributes[4:6]
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169 if self.frame % frame == 0:
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170 count = count - 1
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171
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172 if self.flags & 64:
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173 self.angle += angle
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174 elif self.flags & 128:
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175 self.angle = atan2(self.player.y - y, self.player.x - x) + angle
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176 elif self.flags & 256:
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177 self.angle = angle
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178
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179 dx, dy = cos(self.angle) * speed, sin(self.angle) * speed
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180 self.delta = dx, dy
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181 sprite.angle = self.angle
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182 if sprite.automatic_orientation:
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183 sprite._changed = True
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184
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185 if count > 0:
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186 self.speed_interpolator = Interpolator((speed,), self.frame,
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187 (0.,), self.frame + frame - 1)
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188 else:
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189 self.flags &= ~448
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190 self.speed = speed
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191
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192 self.attributes[1] = count
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193 #TODO: other flags
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194 elif not self.speed_interpolator and self._anmrunner is None:
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195 self.update = self.update_simple
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196
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197 if self.speed_interpolator:
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198 self.speed_interpolator.update(self.frame)
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199 self.speed, = self.speed_interpolator.values
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200
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201 self.x, self.y = x + dx, y + dy
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202
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203 self.frame += 1
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204