Mercurial > nagslang
annotate nagslang/game_object.py @ 91:5c31b4d1851c
Remove NullPhysicser, since it looks like everything needs PHYSICS!!!
author | Jeremy Thurgood <firxen@gmail.com> |
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date | Mon, 02 Sep 2013 08:36:46 +0200 |
parents | 11b0017b5e4b |
children | d6a49f0c1e6e |
rev | line source |
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1 import math |
62 | 2 |
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3 import pygame |
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4 import pymunk |
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5 |
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6 from nagslang.constants import SWITCH_PUSHERS, COLLISION_TYPE_SWITCH |
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7 |
82 | 8 |
81
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9 class Puzzler(object): |
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10 def get_state(self, space): |
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11 raise NotImplementedError() |
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12 |
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13 def notify(self): |
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14 pass |
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15 |
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16 |
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17 class FloorSwitchPuzzler(Puzzler): |
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18 def __init__(self, shape): |
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19 self.shape = shape |
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20 |
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21 def get_state(self, space): |
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22 for shape in space.shape_query(self.shape): |
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23 if shape.collision_type in SWITCH_PUSHERS: |
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24 return True |
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25 return False |
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26 |
59 | 27 |
28 class Physicser(object): | |
29 def add_to_space(self, space): | |
30 raise NotImplementedError() | |
31 | |
32 def remove_from_space(self, space): | |
33 raise NotImplementedError() | |
34 | |
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35 def render_position(self, surface): |
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36 raise NotImplementedError() |
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37 |
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38 def render_angle(self): |
59 | 39 raise NotImplementedError() |
40 | |
41 | |
42 class SingleShapePhysicser(Physicser): | |
43 def __init__(self, shape): | |
44 self._shape = shape | |
45 | |
46 def add_to_space(self, space): | |
47 space.add(self._shape, self._shape.body) | |
48 | |
49 def remove_from_space(self, space): | |
50 space.remove(self._shape, self._shape.body) | |
51 | |
52 def render_position(self, surface): | |
53 pos = self._shape.body.position | |
54 import pymunk.pygame_util | |
55 return pymunk.pygame_util.to_pygame(pos, surface) | |
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56 |
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57 def render_angle(self): |
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58 return self._shape.body.angle |
59 | 59 |
60 | |
61 class Renderer(object): | |
63
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62 def render(self, surface, pos, angle): |
59 | 63 raise NotImplementedError() |
64 | |
65 | |
63
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66 def image_pos(image, pos): |
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67 return (pos[0] - image.get_width() / 2, |
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68 pos[1] - image.get_height() / 2) |
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69 |
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70 |
59 | 71 class ImageRenderer(Renderer): |
72 def __init__(self, image): | |
73 self._image = image | |
74 | |
63
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75 def render(self, surface, pos, angle): |
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76 surface.blit(self._image, image_pos(self._image, pos)) |
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77 |
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78 |
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79 class FacingImageRenderer(Renderer): |
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80 def __init__(self, left_image, right_image): |
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81 self._images = { |
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82 'left': left_image, |
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83 'right': right_image, |
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84 } |
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85 |
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86 def get_image(self, angle): |
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87 if abs(angle) < math.pi / 2: |
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88 return self._images['right'] |
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89 return self._images['left'] |
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90 |
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91 def render(self, surface, pos, angle): |
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92 image = self.get_image(angle) |
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93 surface.blit(image, image_pos(image, pos)) |
59 | 94 |
95 | |
96 class ShapeRenderer(Renderer): | |
97 def __init__(self, shape): | |
98 self._shape = shape | |
99 | |
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100 def render(self, surface, pos, angle): |
59 | 101 import pymunk.pygame_util |
102 pymunk.pygame_util.draw(surface, self._shape) | |
103 | |
104 | |
105 class GameObject(object): | |
106 """A representation of a thing in the game world. | |
107 | |
108 This has a rendery thing, physicsy things and maybe some other things. | |
109 """ | |
110 | |
91
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111 def __init__(self, renderer, physicser, puzzler=None): |
59 | 112 self.renderer = renderer |
113 self.physicser = physicser | |
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114 self.puzzler = puzzler |
59 | 115 |
116 def add_to_space(self, space): | |
117 self.physicser.add_to_space(space) | |
118 | |
119 def render(self, surface): | |
60 | 120 return self.renderer.render( |
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121 surface, self.physicser.render_position(surface), |
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122 self.physicser.render_angle()) |
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123 |
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124 |
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125 class FloorSwitch(GameObject): |
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126 def __init__(self, position): |
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127 body = pymunk.Body() |
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128 body.position = position |
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129 self.shape = pymunk.Circle(body, 30) |
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130 self.shape.collision_type = COLLISION_TYPE_SWITCH |
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131 self.shape.sensor = True |
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132 super(FloorSwitch, self).__init__( |
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133 ShapeRenderer(self.shape), |
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134 SingleShapePhysicser(self.shape), |
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135 FloorSwitchPuzzler(self.shape), |
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136 ) |
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137 |
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138 def add_to_space(self, space): |
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139 # XXX: Hacky hack. |
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140 self._space = space |
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141 |
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142 def render(self, surface): |
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143 if self.puzzler.get_state(self._space): |
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144 self.shape.color = pygame.color.THECOLORS['green'] |
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145 else: |
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146 self.shape.color = pygame.color.THECOLORS['red'] |
82 | 147 super(FloorSwitch, self).render(surface) |