Mercurial > nagslang

annotate nagslang/screens/area.py @ 269:9fcdb106424a

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Add first draft of sound support.
author Simon Cross <hodgestar@gmail.com>
date Thu, 05 Sep 2013 00:54:26 +0200
parents 9d05f0c4bca3
children 933c2f9371ca
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1 """Display a game area."""
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2
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3 import pygame
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4 import pymunk
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5 import pymunk.pygame_util
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6
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7 from nagslang.constants import COLLISION_TYPE_PLAYER, CALLBACK_COLLIDERS
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8 from nagslang.events import ScreenChange, DoorEvent, FireEvent
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9 from nagslang.level import Level
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10 from nagslang.protagonist import Protagonist
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11 from nagslang.screens.base import Screen
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12 from nagslang.game_object import Bullet
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13 from nagslang.sound import sound
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15
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16 class ControlKeys(object):
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17 direction_keys = {
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18 (0, 1): set([pygame.locals.K_UP, pygame.locals.K_w]),
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19 (0, -1): set([pygame.locals.K_DOWN, pygame.locals.K_s]),
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20 (-1, 0): set([pygame.locals.K_LEFT, pygame.locals.K_a]),
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21 (1, 0): set([pygame.locals.K_RIGHT, pygame.locals.K_d]),
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22 }
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23
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24 def __init__(self):
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25 self.keys_down = set()
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26
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27 def key_down(self, key):
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28 self.keys_down.add(key)
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29
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30 def key_up(self, key):
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31 self.keys_down.discard(key)
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32
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33 def handle_event(self, ev):
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34 if ev.type == pygame.locals.KEYDOWN:
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35 self.key_down(ev.key)
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36 elif ev.type == pygame.locals.KEYUP:
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37 self.key_up(ev.key)
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38
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39 def get_direction(self):
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40 dx, dy = 0, 0
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41 for (tx, ty), keys in self.direction_keys.iteritems():
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42 if self.keys_down & keys:
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43 dx += tx
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44 dy += ty
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45 return (dx, dy)
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46
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47
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48 class Drawables(object):
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49 def __init__(self):
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50 self._drawables = {}
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51
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52 def add(self, drawable):
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53 self._drawables.setdefault(drawable.zorder, []).append(drawable)
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54
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55 def remove(self, drawable):
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56 self._drawables[drawable.zorder].remove(drawable)
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57
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58 def get_drawables(self):
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59 for zorder in sorted(self._drawables):
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60 for drawable in self._drawables[zorder]:
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61 yield drawable
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62
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63 __iter__ = get_drawables
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64
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65
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66 class AreaScreen(Screen):
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67
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68 def setup(self):
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69 self._disable_render = False # Avoid redrawing on scene changes
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70 self.keys = ControlKeys()
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71 self._level = Level(self.name)
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72 self._level.load(self.space)
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73 self._drawables = Drawables()
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74 self.add_walls()
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75 self._add_collision_handlers()
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76 if self.protagonist is not None:
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77 # We do things this way to avoid extra pymunk
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78 # juggling to move objects between spaces
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79 old_protagonist = self.protagonist
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80 self.add_protagonist()
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81 self.protagonist.copy_state(old_protagonist)
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82 else:
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83 self.add_protagonist()
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84 self.add_game_objects()
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85 sound.play_music("POL-cyber-factory-short.ogg")
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86
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87 def _collision_pre_solve_handler(self, space, arbiter):
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88 gobj = arbiter.shapes[1].physicser.game_object
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89 result = gobj.collide_with_protagonist(self.protagonist)
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90 # The collision handler must return `True` or `False`. We don't want to
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91 # accidentally reject collisions from handlers that return `None`, so
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92 # we explicitly check for `False` and treate everything else as `True`.
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93 if result is False:
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94 return False
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95 return True
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96
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97 def _add_collision_handlers(self):
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98 for collision_type in CALLBACK_COLLIDERS:
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99 self.space.add_collision_handler(
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100 COLLISION_TYPE_PLAYER, collision_type,
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101 pre_solve=self._collision_pre_solve_handler)
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102
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103 def add_walls(self):
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104 self.walls = []
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105 body = pymunk.Body()
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106 body.position = (0, 0)
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107 walls = self._level.get_walls()
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108 for wall in walls:
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109 corners = wall
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110 corner = corners[-1]
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111 for next_corner in corners:
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112 wall = pymunk.Segment(body, corner, next_corner, 5)
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113 wall.elasticity = 1.0
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114 self.walls.append(wall)
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115 corner = next_corner
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116 self.space.add(*self.walls)
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117
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118 def add_game_objects(self):
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119 for drawable in self._level.drawables:
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120 self._drawables.add(drawable)
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121
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122 def add_protagonist(self):
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123 self.protagonist = Protagonist(self.space, (350, 300))
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124 self._drawables.add(self.protagonist)
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125
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126 def handle_event(self, ev):
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127 if ev.type == pygame.locals.KEYDOWN:
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128 if ev.key == pygame.locals.K_ESCAPE:
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129 ScreenChange.post('menu')
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130 if ev.key == pygame.locals.K_c:
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131 self.protagonist.toggle_form()
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132 self.world.transformations += 1
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133 if ev.key == pygame.locals.K_SPACE:
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134 self.world.attacks += 1
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135 self.protagonist.attack()
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136 elif DoorEvent.matches(ev):
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137 self.protagonist.set_position(ev.dest_pos)
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138 if ev.destination != self.name:
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139 # Go to anther screen
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140 self._disable_render = True
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141 self.world.rooms += 1
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142 ScreenChange.post(ev.destination, self.protagonist)
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143 return
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144 # else we're teleporting within the screen, and just the
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145 # position change is enough
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146 elif FireEvent.matches(ev):
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Stefano Rivera <stefano@rivera.za.net>
parents: 258
diff changeset
147 bullet = Bullet(self.space, ev.source, ev.impulse)
db7c8e74efb4 (really rubbish) bullets
Stefano Rivera <stefano@rivera.za.net>
parents: 258
diff changeset
148 self._drawables.add(bullet)
34
2995723e8ccf Move and hold.
Simon Cross <hodgestar@gmail.com>
parents: 27
diff changeset
149 self.keys.handle_event(ev)
18
9ecb1d222ee0 Screens.
Simon Cross <hodgestar@gmail.com>
parents:
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150
87
75d8ad4bf9b5 Hack in viewport
Neil Muller <drnlmuller@gmail.com>
parents: 86
diff changeset
151 def _calc_viewport(self, level_surface, display_surface):
75d8ad4bf9b5 Hack in viewport
Neil Muller <drnlmuller@gmail.com>
parents: 86
diff changeset
152 level_size = level_surface.get_size()
75d8ad4bf9b5 Hack in viewport
Neil Muller <drnlmuller@gmail.com>
parents: 86
diff changeset
153 display_size = display_surface.get_size()
93
d6a49f0c1e6e Rectangular human protagonist shape, refactored physicsers.
Jeremy Thurgood <firxen@gmail.com>
parents: 92
diff changeset
154 protagnist_pos = self.protagonist.physicser.get_render_position(
127
fe1f0bb4ecf0 Handle case of display larger than the level better
Neil Muller <drnlmuller@gmail.com>
parents: 107
diff changeset
155 level_surface)
87
75d8ad4bf9b5 Hack in viewport
Neil Muller <drnlmuller@gmail.com>
parents: 86
diff changeset
156 x_wide = display_size[0] // 2
75d8ad4bf9b5 Hack in viewport
Neil Muller <drnlmuller@gmail.com>
parents: 86
diff changeset
157 y_wide = display_size[1] // 2
127
fe1f0bb4ecf0 Handle case of display larger than the level better
Neil Muller <drnlmuller@gmail.com>
parents: 107
diff changeset
158 if display_size[0] > level_size[0]:
fe1f0bb4ecf0 Handle case of display larger than the level better
Neil Muller <drnlmuller@gmail.com>
parents: 107
diff changeset
159 x = -(display_size[0] - level_size[0]) // 2
fe1f0bb4ecf0 Handle case of display larger than the level better
Neil Muller <drnlmuller@gmail.com>
parents: 107
diff changeset
160 elif protagnist_pos[0] < x_wide:
87
75d8ad4bf9b5 Hack in viewport
Neil Muller <drnlmuller@gmail.com>
parents: 86
diff changeset
161 x = 0
75d8ad4bf9b5 Hack in viewport
Neil Muller <drnlmuller@gmail.com>
parents: 86
diff changeset
162 elif protagnist_pos[0] > level_size[0] - x_wide:
75d8ad4bf9b5 Hack in viewport
Neil Muller <drnlmuller@gmail.com>
parents: 86
diff changeset
163 x = level_size[0] - display_size[0]
75d8ad4bf9b5 Hack in viewport
Neil Muller <drnlmuller@gmail.com>
parents: 86
diff changeset
164 else:
75d8ad4bf9b5 Hack in viewport
Neil Muller <drnlmuller@gmail.com>
parents: 86
diff changeset
165 x = protagnist_pos[0] - x_wide
127
fe1f0bb4ecf0 Handle case of display larger than the level better
Neil Muller <drnlmuller@gmail.com>
parents: 107
diff changeset
166 if display_size[1] > level_size[1]:
fe1f0bb4ecf0 Handle case of display larger than the level better
Neil Muller <drnlmuller@gmail.com>
parents: 107
diff changeset
167 y = -(display_size[1] - level_size[1]) // 2
fe1f0bb4ecf0 Handle case of display larger than the level better
Neil Muller <drnlmuller@gmail.com>
parents: 107
diff changeset
168 elif protagnist_pos[1] < y_wide:
87
75d8ad4bf9b5 Hack in viewport
Neil Muller <drnlmuller@gmail.com>
parents: 86
diff changeset
169 y = 0
75d8ad4bf9b5 Hack in viewport
Neil Muller <drnlmuller@gmail.com>
parents: 86
diff changeset
170 elif protagnist_pos[1] > level_size[1] - y_wide:
75d8ad4bf9b5 Hack in viewport
Neil Muller <drnlmuller@gmail.com>
parents: 86
diff changeset
171 y = level_size[1] - display_size[1]
75d8ad4bf9b5 Hack in viewport
Neil Muller <drnlmuller@gmail.com>
parents: 86
diff changeset
172 else:
75d8ad4bf9b5 Hack in viewport
Neil Muller <drnlmuller@gmail.com>
parents: 86
diff changeset
173 y = protagnist_pos[1] - y_wide
75d8ad4bf9b5 Hack in viewport
Neil Muller <drnlmuller@gmail.com>
parents: 86
diff changeset
174 return pygame.rect.Rect(x, y, display_size[0], display_size[1])
75d8ad4bf9b5 Hack in viewport
Neil Muller <drnlmuller@gmail.com>
parents: 86
diff changeset
175
18
9ecb1d222ee0 Screens.
Simon Cross <hodgestar@gmail.com>
parents:
diff changeset
176 def render(self, surface):
190
97627a999042 Don't render the old scene with the protagnist's new position during scene changes
Neil Muller <drnlmuller@gmail.com>
parents: 188
diff changeset
177 if self._disable_render:
97627a999042 Don't render the old scene with the protagnist's new position during scene changes
Neil Muller <drnlmuller@gmail.com>
parents: 188
diff changeset
178 return
50
94d47bfcc7bb Approximate levels and walls
Neil Muller <drnlmuller@gmail.com>
parents: 47
diff changeset
179 background = self._level.get_background()
84
ef8e799477e0 Point pymunk at a screen surface, not the display to make things saner
Neil Muller <drnlmuller@gmail.com>
parents: 83
diff changeset
180 mysurface = background.copy()
105
0131e4606e1a List of drawables in area.
Jeremy Thurgood <firxen@gmail.com>
parents: 100
diff changeset
181 for drawable in self._drawables:
0131e4606e1a List of drawables in area.
Jeremy Thurgood <firxen@gmail.com>
parents: 100
diff changeset
182 drawable.render(mysurface)
87
75d8ad4bf9b5 Hack in viewport
Neil Muller <drnlmuller@gmail.com>
parents: 86
diff changeset
183 render_rect = self._calc_viewport(mysurface, surface)
75d8ad4bf9b5 Hack in viewport
Neil Muller <drnlmuller@gmail.com>
parents: 86
diff changeset
184 surface.blit(mysurface, (0, 0), render_rect)
191
e080fcd07fa9 Overlay notes
Stefano Rivera <stefano@rivera.za.net>
parents: 190
diff changeset
185 for overlay in self._level.overlay_drawables:
e080fcd07fa9 Overlay notes
Stefano Rivera <stefano@rivera.za.net>
parents: 190
diff changeset
186 if overlay.is_visible():
211
434b5a3aaaff Pass display offset to overlays for when the display is larger than the level
Neil Muller <drnlmuller@gmail.com>
parents: 192
diff changeset
187 overlay.render(surface, render_rect.topleft)
243
46707efbb3a5 Added health bar to main screen.
David Sharpe
parents: 211
diff changeset
188 self.render_health_bar(surface)
34
2995723e8ccf Move and hold.
Simon Cross <hodgestar@gmail.com>
parents: 27
diff changeset
189
2995723e8ccf Move and hold.
Simon Cross <hodgestar@gmail.com>
parents: 27
diff changeset
190 def tick_protagonist(self):
100
96bdfadeb461 Cleaner direction key management.
Jeremy Thurgood <firxen@gmail.com>
parents: 97
diff changeset
191 dx, dy = self.keys.get_direction()
47
82036437ebf6 Better movement and swap between werewolf and human form with 'w' (hodgestar, decoy).
Simon Cross <hodgestar@gmail.com>
parents: 37
diff changeset
192 self.protagonist.set_direction(dx, dy)
34
2995723e8ccf Move and hold.
Simon Cross <hodgestar@gmail.com>
parents: 27
diff changeset
193
2995723e8ccf Move and hold.
Simon Cross <hodgestar@gmail.com>
parents: 27
diff changeset
194 def tick(self, seconds):
2995723e8ccf Move and hold.
Simon Cross <hodgestar@gmail.com>
parents: 27
diff changeset
195 self.tick_protagonist()
143
deac6a4008e7 Hook up protagnist animations
Neil Muller <drnlmuller@gmail.com>
parents: 140
diff changeset
196 for drawable in self._drawables:
deac6a4008e7 Hook up protagnist animations
Neil Muller <drnlmuller@gmail.com>
parents: 140
diff changeset
197 drawable.animate()
243
46707efbb3a5 Added health bar to main screen.
David Sharpe
parents: 211
diff changeset
198
34
2995723e8ccf Move and hold.
Simon Cross <hodgestar@gmail.com>
parents: 27
diff changeset
199 super(AreaScreen, self).tick(seconds)
243
46707efbb3a5 Added health bar to main screen.
David Sharpe
parents: 211
diff changeset
200
258
083053422a84 Added collision damage with enemies.
David Sharpe
parents: 257
diff changeset
201 def render_health_bar(self, surface, damage_experienced=None):
243
46707efbb3a5 Added health bar to main screen.
David Sharpe
parents: 211
diff changeset
202 rect = pygame.Rect(50, 500, 110, 50)
258
083053422a84 Added collision damage with enemies.
David Sharpe
parents: 257
diff changeset
203 if damage_experienced:
083053422a84 Added collision damage with enemies.
David Sharpe
parents: 257
diff changeset
204 health_box_colour = pygame.color.THECOLORS['red']
083053422a84 Added collision damage with enemies.
David Sharpe
parents: 257
diff changeset
205 else:
083053422a84 Added collision damage with enemies.
David Sharpe
parents: 257
diff changeset
206 health_box_colour = pygame.color.THECOLORS['white']
257
David Sharpe
parents: 256
diff changeset
207 pygame.draw.rect(surface, health_box_colour, rect, 0)
246
281c54cefe08 Added health to protagonist.
David Sharpe
parents: 244
diff changeset
208 if self.protagonist.in_human_form():
243
46707efbb3a5 Added health bar to main screen.
David Sharpe
parents: 211
diff changeset
209 health_colour = pygame.color.THECOLORS['red']
46707efbb3a5 Added health bar to main screen.
David Sharpe
parents: 211
diff changeset
210 else:
46707efbb3a5 Added health bar to main screen.
David Sharpe
parents: 211
diff changeset
211 health_colour = pygame.color.THECOLORS['purple']
246
281c54cefe08 Added health to protagonist.
David Sharpe
parents: 244
diff changeset
212 rect = pygame.Rect(55, 505, self.protagonist.get_health_level(), 40)
243
46707efbb3a5 Added health bar to main screen.
David Sharpe
parents: 211
diff changeset
213 pygame.draw.rect(surface, health_colour,
246
281c54cefe08 Added health to protagonist.
David Sharpe
parents: 244
diff changeset
214 rect, 0)