Mercurial > nagslang
annotate nagslang/screens/area.py @ 127:fe1f0bb4ecf0
Handle case of display larger than the level better
| author | Neil Muller <drnlmuller@gmail.com> |
|---|---|
| date | Mon, 02 Sep 2013 17:22:42 +0200 |
| parents | b90d01e4d9d4 |
| children | 79e1888573d3 |
| rev | line source |
|---|---|
| 18 | 1 """Display a game area.""" |
| 2 | |
| 20 | 3 import pygame |
| 21 | 4 import pymunk |
| 5 import pymunk.pygame_util | |
| 20 | 6 |
| 107 | 7 from nagslang.constants import ZORDER_HIGH |
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8 from nagslang.events import ScreenChange |
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9 from nagslang.game_object import FloorSwitch, FloorLight, PuzzleGlue |
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10 from nagslang.level import Level |
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11 from nagslang.protagonist import Protagonist |
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12 from nagslang.screens.base import Screen |
| 18 | 13 |
| 83 | 14 |
| 34 | 15 class ControlKeys(object): |
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16 direction_keys = { |
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17 (0, 1): set([pygame.locals.K_UP, pygame.locals.K_w]), |
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18 (0, -1): set([pygame.locals.K_DOWN, pygame.locals.K_s]), |
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19 (-1, 0): set([pygame.locals.K_LEFT, pygame.locals.K_a]), |
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20 (1, 0): set([pygame.locals.K_RIGHT, pygame.locals.K_d]), |
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21 } |
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22 |
| 34 | 23 def __init__(self): |
| 24 self.keys_down = set() | |
| 25 | |
| 26 def key_down(self, key): | |
| 27 self.keys_down.add(key) | |
| 28 | |
| 29 def key_up(self, key): | |
| 30 self.keys_down.discard(key) | |
| 31 | |
| 32 def handle_event(self, ev): | |
| 33 if ev.type == pygame.locals.KEYDOWN: | |
| 34 self.key_down(ev.key) | |
| 35 elif ev.type == pygame.locals.KEYUP: | |
| 36 self.key_up(ev.key) | |
| 37 | |
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38 def get_direction(self): |
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39 dx, dy = 0, 0 |
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40 for (tx, ty), keys in self.direction_keys.iteritems(): |
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41 if self.keys_down & keys: |
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42 dx += tx |
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43 dy += ty |
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44 return (dx, dy) |
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45 |
| 34 | 46 |
| 107 | 47 class Drawables(object): |
| 48 def __init__(self): | |
| 49 self._drawables = {} | |
| 50 | |
| 51 def add(self, drawable): | |
| 52 self._drawables.setdefault(drawable.zorder, []).append(drawable) | |
| 53 | |
| 54 def remove(self, drawable): | |
| 55 self._drawables[drawable.zorder].remove(drawable) | |
| 56 | |
| 57 def get_drawables(self): | |
| 58 for zorder in sorted(self._drawables): | |
| 59 for drawable in self._drawables[zorder]: | |
| 60 yield drawable | |
| 61 | |
| 62 __iter__ = get_drawables | |
| 63 | |
| 64 | |
| 18 | 65 class AreaScreen(Screen): |
| 21 | 66 |
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67 def setup(self): |
| 34 | 68 self.keys = ControlKeys() |
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69 self._level = Level(self.name) |
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70 self._level.load() |
| 107 | 71 self._drawables = Drawables() |
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72 self.add_walls() |
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73 self.add_protagonist() |
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74 # TODO: Put this in a level instead: |
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75 glue = PuzzleGlue() |
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76 switch = FloorSwitch(self.space, (300, 400)) |
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77 light = FloorLight(self.space, (300, 500), 'switch') |
| 107 | 78 light2 = FloorLight(self.space, (250, 500), 'switch') |
| 79 light2.zorder = ZORDER_HIGH | |
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80 glue.add_component('switch', switch.puzzler) |
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81 glue.add_component('light', light.puzzler) |
| 107 | 82 glue.add_component('light2', light2.puzzler) |
| 83 self._drawables.add(switch) | |
| 84 self._drawables.add(light) | |
| 85 self._drawables.add(light2) | |
| 21 | 86 |
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87 def add_walls(self): |
| 21 | 88 self.walls = [] |
| 89 body = pymunk.Body() | |
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90 body.position = (0, 0) |
| 53 | 91 walls = self._level.get_walls() |
| 92 for wall in walls: | |
| 93 corners = wall | |
| 94 corner = corners[-1] | |
| 95 for next_corner in corners: | |
| 96 wall = pymunk.Segment(body, corner, next_corner, 5) | |
| 97 wall.elasticity = 1.0 | |
| 98 self.walls.append(wall) | |
| 99 corner = next_corner | |
| 21 | 100 self.space.add(*self.walls) |
| 101 | |
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102 def add_protagonist(self): |
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103 self.protagonist = Protagonist(self.space, (350, 300)) |
| 107 | 104 self._drawables.add(self.protagonist) |
| 21 | 105 |
| 18 | 106 def handle_event(self, ev): |
| 20 | 107 if ev.type == pygame.locals.KEYDOWN: |
| 108 if ev.key == pygame.locals.K_ESCAPE: | |
| 109 ScreenChange.post('menu') | |
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110 if ev.key == pygame.locals.K_c: |
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111 self.protagonist.toggle_form() |
| 34 | 112 self.keys.handle_event(ev) |
| 18 | 113 |
| 87 | 114 def _calc_viewport(self, level_surface, display_surface): |
| 115 level_size = level_surface.get_size() | |
| 116 display_size = display_surface.get_size() | |
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117 protagnist_pos = self.protagonist.physicser.get_render_position( |
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118 level_surface) |
| 87 | 119 x_wide = display_size[0] // 2 |
| 120 y_wide = display_size[1] // 2 | |
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121 if display_size[0] > level_size[0]: |
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122 x = -(display_size[0] - level_size[0]) // 2 |
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123 elif protagnist_pos[0] < x_wide: |
| 87 | 124 x = 0 |
| 125 elif protagnist_pos[0] > level_size[0] - x_wide: | |
| 126 x = level_size[0] - display_size[0] | |
| 127 else: | |
| 128 x = protagnist_pos[0] - x_wide | |
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129 if display_size[1] > level_size[1]: |
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130 y = -(display_size[1] - level_size[1]) // 2 |
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131 elif protagnist_pos[1] < y_wide: |
| 87 | 132 y = 0 |
| 133 elif protagnist_pos[1] > level_size[1] - y_wide: | |
| 134 y = level_size[1] - display_size[1] | |
| 135 else: | |
| 136 y = protagnist_pos[1] - y_wide | |
| 137 return pygame.rect.Rect(x, y, display_size[0], display_size[1]) | |
| 138 | |
| 18 | 139 def render(self, surface): |
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140 #surface.fill(pygame.color.Color(0, 0, 0)) |
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141 background = self._level.get_background() |
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142 mysurface = background.copy() |
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143 for drawable in self._drawables: |
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144 drawable.render(mysurface) |
| 87 | 145 render_rect = self._calc_viewport(mysurface, surface) |
| 146 surface.blit(mysurface, (0, 0), render_rect) | |
| 34 | 147 |
| 148 def tick_protagonist(self): | |
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149 dx, dy = self.keys.get_direction() |
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Simon Cross <hodgestar@gmail.com>
parents:
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150 self.protagonist.set_direction(dx, dy) |
| 34 | 151 |
| 152 def tick(self, seconds): | |
| 153 self.tick_protagonist() | |
| 154 super(AreaScreen, self).tick(seconds) |