Mercurial > nagslang
annotate nagslang/level.py @ 75:79748a884eb5
Put levels in a levels directory
author | Stefano Rivera <stefano@rivera.za.net> |
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date | Sun, 01 Sep 2013 21:44:45 +0200 |
parents | 5db052531510 |
children | ecba9550ad8d |
rev | line source |
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50
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1 import pygame |
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2 import pygame.locals as pgl |
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3 |
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4 from nagslang.resources import resources |
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5 |
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6 POLY_COLORS = { |
53 | 7 1: pygame.color.THECOLORS['red'], |
8 2: pygame.color.THECOLORS['green'], | |
9 3: pygame.color.THECOLORS['yellow'], | |
10 4: pygame.color.THECOLORS['blue'], | |
11 5: pygame.color.THECOLORS['lightblue'], | |
12 6: pygame.color.THECOLORS['magenta'], | |
13 } | |
50
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14 |
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15 |
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16 class Level(object): |
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17 |
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18 def __init__(self, name): |
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19 self.name = name |
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20 # defaults |
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21 self.x = 800 |
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22 self.y = 600 |
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23 self.polygons = {} |
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24 self.basetile = 'tiles/floor.png' |
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25 self._tile_image = None |
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26 self._surface = None |
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27 |
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28 def load(self): |
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29 |
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30 def add_polygon(polygon, index, num_points): |
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31 self.polygons[index] = polygon |
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32 if len(polygon) != num_points: |
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33 print 'Error - incorrect polygon size' |
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34 print 'Expected: %d, got %d' % (num_points, len(polygon)) |
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35 |
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36 inpoly = False |
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37 polygon = [] |
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38 index = 0 |
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39 num_points = 0 |
75
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40 with resources.get_file('levels', self.name) as f: |
50
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41 for line in f: |
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42 if inpoly: |
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43 if not line.startswith('Point:'): |
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44 add_polygon(polygon, index, num_points) |
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45 polygon = [] |
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46 inpoly = False |
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47 index = 0 |
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48 else: |
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49 point = line.split(':', 1)[1] |
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50 x, y = [int(i) for i in point.split()] |
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51 polygon.append((x, y)) |
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52 if line.startswith('X-Size:'): |
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53 self.x = int(line.split(':', 1)[1]) |
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54 elif line.startswith('Y-Size:'): |
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55 self.y = int(line.split(':', 1)[1]) |
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56 elif line.startswith('Base tile:'): |
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57 self.basetile = line.split(':', 1)[1].strip() |
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58 elif line.startswith('Polygon'): |
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59 rest = line.split(' ', 1)[1] |
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60 index, num_points = [int(x) for x in rest.split(':', 1)] |
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61 inpoly = True |
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62 if index: |
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63 add_polygon(polygon, index, num_points) |
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64 |
72 | 65 def save(self): |
66 closed = True | |
67 for poly in self.polygons.values(): | |
68 if len(poly) == 0: | |
69 # We ignore empty polygons | |
70 continue | |
71 elif len(poly) == 1: | |
72 closed = False | |
73 print "\033[31mError: polygon too small\033[0m" | |
74 elif poly[-1] != poly[0]: | |
75 closed = False | |
76 print "\033[31mError: polygon not closed\033[0m" | |
77 if not closed: | |
78 print 'Not saving the level' | |
79 return | |
75
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72
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80 with resources.get_file('levels', self.name, mode='w') as f: |
72 | 81 f.write('X-Size: %s\n' % self.x) |
82 f.write('Y-Size: %s\n' % self.y) | |
83 f.write('Base tile: %s\n' % self.basetile) | |
84 for i, poly in self.polygons.items(): | |
85 if len(poly) == 0: | |
86 continue | |
87 f.write('Polygon %d : %d\n' % (i, len(poly))) | |
88 for point in poly: | |
89 f.write('Point: %d %d\n' % point) | |
90 print 'level %s saved' % self.name | |
91 | |
50
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92 def get_size(self): |
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93 return self.x, self.y |
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94 |
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95 def set_base_tile(self, new_tile): |
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96 self.basetile = new_tile |
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97 self._tile_image = None |
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98 |
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99 def point_to_pygame(self, pos): |
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100 # Convert a point from pymunk (which is what we store) |
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101 # to pygame for drawing |
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102 return (pos[0], self.y - pos[1]) |
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103 |
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104 def get_walls(self): |
53 | 105 return self.polygons.values() |
50
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106 |
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107 def _draw_walls(self): |
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108 for index, polygon in self.polygons.items(): |
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109 color = POLY_COLORS[index] |
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110 if len(polygon) > 1: |
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111 pointlist = [self.point_to_pygame(p) for p in polygon] |
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112 pygame.draw.lines(self._surface, color, False, pointlist, 2) |
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113 |
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114 def get_background(self): |
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115 self._draw_background() |
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116 # Draw polygons |
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117 self._draw_walls() |
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118 return self._surface |
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119 |
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120 def _draw_background(self, force=False): |
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121 if self._tile_image is None: |
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122 self._tile_image = resources.get_image(self.basetile) |
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123 if self._surface is not None and not force: |
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124 # We assume we don't change |
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125 return self._surface |
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126 self._surface = pygame.surface.Surface((self.x, self.y), pgl.SRCALPHA) |
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127 self._surface.fill(pygame.color.THECOLORS['black']) |
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128 x_step = self._tile_image.get_rect().width |
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129 y_step = self._tile_image.get_rect().height |
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130 x_count = self.x // x_step + 1 |
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131 y_count = self.y / y_step + 1 |
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132 for x in range(x_count): |
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133 for y in range(y_count): |
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134 tile_rect = pygame.rect.Rect(x * x_step, y * y_step, |
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135 x_step, y_step) |
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136 self._surface.blit(self._tile_image, tile_rect) |
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137 return self._surface |