Mercurial > nagslang
comparison tools/area_editor.py @ 51:9c4681f35866
The level editor
author | Neil Muller <drnlmuller@gmail.com> |
---|---|
date | Sun, 01 Sep 2013 18:29:04 +0200 |
parents | |
children | 26d7bb8c09c8 |
comparison
equal
deleted
inserted
replaced
50:94d47bfcc7bb | 51:9c4681f35866 |
---|---|
1 # The basic area editor | |
2 # | |
3 # To edit an existing level, use | |
4 # editor levelname | |
5 # | |
6 # To create a new level: | |
7 # | |
8 # editor levelname <xsize> <ysiz> | |
9 # (size specified in pixels | |
10 # | |
11 | |
12 import pygame | |
13 import pygame.locals as pgl | |
14 | |
15 from nagslang.resources import resources | |
16 from nagslang.constants import SCREEN, FPS | |
17 from nagslang.level import Level, POLY_COLORS | |
18 | |
19 import sys | |
20 | |
21 | |
22 class EditorLevel(Level): | |
23 | |
24 def __init__(self, name, x=800, y=600): | |
25 super(EditorLevel, self).__init__(name) | |
26 self.x = x | |
27 self.y = y | |
28 | |
29 def round_point(self, pos): | |
30 return (10 * (pos[0] // 10), 10 * (pos[1] // 10)) | |
31 | |
32 def point_to_pymunk(self, pos): | |
33 # inverse of point_to_pygame | |
34 # (this is also the same as point_to_pygame, but a additional | |
35 # function for sanity later in pyweek). | |
36 return (pos[0], self.y - pos[1]) | |
37 | |
38 def add_point(self, poly_index, pos): | |
39 self.polygons.setdefault(poly_index, []) | |
40 if not self.polygons[poly_index]: | |
41 self.polygons[poly_index].append( | |
42 self.point_to_pymunk(self.round_point(pos))) | |
43 else: | |
44 add_pos = self.fix_angle(poly_index, pos) | |
45 self.polygons[poly_index].append(add_pos) | |
46 | |
47 def fix_angle(self, index, pos): | |
48 # Last point | |
49 point1 = self.point_to_pygame(self.polygons[index][-1]) | |
50 pos = self.round_point(pos) | |
51 # We want the line (point1 to pos) to be an angle of | |
52 # 0, 45, 90, 135, 180, 225, 270, 305 | |
53 # However, we only need to consider half the circle | |
54 # This is a hack to approximate the right thing | |
55 pos0 = (pos[0], point1[1]) | |
56 pos90 = (point1[0], pos[1]) | |
57 dist = max(abs(point1[0] - pos[0]), abs(point1[1] - pos[1])) | |
58 pos45 = (point1[0] + dist, point1[1] + dist) | |
59 pos135 = (point1[0] + dist, point1[1] - dist) | |
60 pos225 = (point1[0] - dist, point1[1] - dist) | |
61 pos305 = (point1[0] - dist, point1[1] + dist) | |
62 min_dist = 9999999 | |
63 new_pos = point1 | |
64 for cand in [pos0, pos90, pos45, pos135, pos225, pos305]: | |
65 dist = (pos[0] - cand[0]) ** 2 + (pos[1] - cand[1]) ** 2 | |
66 if dist < min_dist: | |
67 new_pos = cand | |
68 min_dist = dist | |
69 return self.point_to_pymunk(new_pos) | |
70 | |
71 def delete_point(self, index): | |
72 if index in self.polygons and len(self.polygons[index]) > 0: | |
73 self.polygons[index].pop() | |
74 | |
75 def draw(self, surface, topleft, mouse_pos, mouse_poly): | |
76 self._draw_background(True) | |
77 # Draw polygons as needed for the editor | |
78 for index, polygon in self.polygons.items(): | |
79 color = POLY_COLORS[index] | |
80 if len(polygon) > 1: | |
81 pointlist = [self.point_to_pygame(p) for p in polygon] | |
82 pygame.draw.lines(self._surface, color, False, pointlist, 2) | |
83 if index == mouse_poly and mouse_pos: | |
84 endpoint = self.fix_angle(index, mouse_pos) | |
85 pygame.draw.line(self._surface, color, | |
86 self.point_to_pygame(polygon[-1]), | |
87 self.point_to_pygame(endpoint)) | |
88 surface_area = pygame.rect.Rect(topleft, SCREEN) | |
89 surface.blit(self._surface, (0, 0), surface_area) | |
90 | |
91 def save(self): | |
92 levelfile = resources.get_resource_path(self.name) | |
93 with file(levelfile, 'w') as f: | |
94 f.write('X-Size: %s\n' % self.x) | |
95 f.write('Y-Size: %s\n' % self.y) | |
96 f.write('Base tile: %s\n' % self.basetile) | |
97 for i, poly in self.polygons.items(): | |
98 f.write('Polygon %d : %d\n' % (i, len(poly))) | |
99 for point in poly: | |
100 f.write('Point: %d %d\n' % point) | |
101 | |
102 | |
103 class Editor(object): | |
104 | |
105 def __init__(self, level, surface): | |
106 self.level = level | |
107 self.surface = surface | |
108 self.pos = (0, 0) | |
109 self.cur_poly = None | |
110 self.mouse_pos = None | |
111 | |
112 def move_view(self, offset): | |
113 new_pos = [self.pos[0] + offset[0], self.pos[1] + offset[1]] | |
114 if new_pos[0] < 0: | |
115 new_pos[0] = self.pos[0] | |
116 elif new_pos[0] > self.level.x - SCREEN[0]: | |
117 new_pos[0] = self.pos[0] | |
118 if new_pos[1] < 0: | |
119 new_pos[1] = self.pos[1] | |
120 elif new_pos[1] > self.level.y - SCREEN[1]: | |
121 new_pos[1] = self.pos[1] | |
122 self.pos = tuple(new_pos) | |
123 | |
124 def draw(self): | |
125 if (self.cur_poly is not None and self.cur_poly in self.level.polygons | |
126 and len(self.level.polygons[self.cur_poly])): | |
127 # We have an active polygon | |
128 mouse_pos = self._level_coordinates(self.mouse_pos) | |
129 else: | |
130 mouse_pos = None | |
131 self.level.draw(self.surface, self.pos, mouse_pos, | |
132 self.cur_poly) | |
133 | |
134 def _level_coordinates(self, pos): | |
135 # Move positions to level values | |
136 if not pos: | |
137 return (0, 0) | |
138 return pos[0] + self.pos[0], pos[1] + self.pos[1] | |
139 | |
140 def run(self): | |
141 pygame.key.set_repeat(100, 50) | |
142 running = True | |
143 clock = pygame.time.Clock() | |
144 while running: | |
145 for ev in pygame.event.get(): | |
146 if ev.type == pgl.QUIT: | |
147 running = False | |
148 elif ev.type == pgl.KEYDOWN: | |
149 if ev.key == pgl.K_ESCAPE: | |
150 running = False | |
151 elif ev.key == pgl.K_LEFT: | |
152 self.move_view((-10, 0)) | |
153 elif ev.key == pgl.K_RIGHT: | |
154 self.move_view((10, 0)) | |
155 elif ev.key == pgl.K_UP: | |
156 self.move_view((0, -10)) | |
157 elif ev.key == pgl.K_DOWN: | |
158 self.move_view((0, 10)) | |
159 if ev.key == pgl.K_1: | |
160 self.cur_poly = 1 | |
161 if ev.key == pgl.K_2: | |
162 self.cur_poly = 2 | |
163 if ev.key == pgl.K_3: | |
164 self.cur_poly = 3 | |
165 if ev.key == pgl.K_4: | |
166 self.cur_poly = 4 | |
167 if ev.key == pgl.K_5: | |
168 self.cur_poly = 5 | |
169 if ev.key == pgl.K_6: | |
170 self.cur_poly = 6 | |
171 if ev.key == pgl.K_0: | |
172 self.cur_poly = None | |
173 if ev.key == pgl.K_d and self.cur_poly: | |
174 self.level.delete_point(self.cur_poly) | |
175 if ev.key == pgl.K_s: | |
176 level.save() | |
177 elif ev.type == pgl.MOUSEBUTTONDOWN and self.cur_poly: | |
178 # Add a point | |
179 self.level.add_point(self.cur_poly, | |
180 self._level_coordinates(ev.pos)) | |
181 elif ev.type == pgl.MOUSEMOTION: | |
182 self.mouse_pos = ev.pos | |
183 self.draw() | |
184 pygame.display.flip() | |
185 clock.tick(FPS) | |
186 | |
187 | |
188 if __name__ == "__main__": | |
189 if len(sys.argv) == 2: | |
190 level = EditorLevel(sys.argv[1]) | |
191 level.load() | |
192 elif len(sys.argv) == 4: | |
193 level = EditorLevel(sys.argv[1], int(sys.argv[2]), int(sys.argv[3])) | |
194 else: | |
195 print 'Please supply a levelname or levelname and level size' | |
196 sys.exit() | |
197 pygame.display.init() | |
198 pygame.font.init() | |
199 pygame.display.set_mode(SCREEN, pgl.SWSURFACE) | |
200 pygame.display.set_caption('Nagslang Area Editor') | |
201 editor = Editor(level, pygame.display.get_surface()) | |
202 editor.run() |