source: tools/area_editor.py@ 183:7ffb43164042

Last change on this file since 183:7ffb43164042 was 167:bb297f3f99f4, checked in by Neil Muller <drnlmuller@…>, 8 years ago

Allow using right mouse button to drag level display

  • Property exe set to *
File size: 12.5 KB
Line 
1#!/usr/bin/env python
2
3# The basic area editor
4#
5# To edit an existing level, use
6# editor levelname
7#
8# To create a new level:
9#
10# editor levelname <xsize> <ysiz>
11# (size specified in pixels
12#
13
14import os
15import sys
16
17import pygame
18import pygame.locals as pgl
19
20sys.path.append(os.path.join(os.path.dirname(__file__), '..'))
21
22import pymunk
23
24from albow.root import RootWidget
25from albow.widget import Widget
26from albow.controls import Button
27from albow.dialogs import alert
28
29from nagslang.constants import SCREEN
30from nagslang.level import Level, POLY_COLORS
31
32
33# layout constants
34MENU_BUTTON_HEIGHT = 35
35MENU_PAD = 6
36MENU_HALF_PAD = MENU_PAD // 2
37MENU_LEFT = SCREEN[0] + MENU_HALF_PAD
38MENU_WIDTH = 200 - MENU_PAD
39
40
41class EditorLevel(Level):
42
43 def __init__(self, name, x=800, y=600):
44 super(EditorLevel, self).__init__(name)
45 self.x = x
46 self.y = y
47
48 def round_point(self, pos):
49 return (10 * (pos[0] // 10), 10 * (pos[1] // 10))
50
51 def point_to_pymunk(self, pos):
52 # inverse of point_to_pygame
53 # (this is also the same as point_to_pygame, but a additional
54 # function for sanity later in pyweek).
55 return (pos[0], self.y - pos[1])
56
57 def add_point(self, poly_index, pos):
58 self.polygons.setdefault(poly_index, [])
59 if not self.polygons[poly_index]:
60 point = self.point_to_pymunk(self.round_point(pos))
61 self.polygons[poly_index].append(point)
62 else:
63 add_pos = self.fix_angle(poly_index, pos)
64 self.polygons[poly_index].append(add_pos)
65
66 def fix_angle(self, index, pos):
67 # Last point
68 point1 = self.point_to_pygame(self.polygons[index][-1])
69 pos = self.round_point(pos)
70 # We want the line (point1 to pos) to be an angle of
71 # 0, 45, 90, 135, 180, 225, 270, 305
72 # However, we only need to consider half the circle
73 # This is a hack to approximate the right thing
74 pos0 = (pos[0], point1[1])
75 pos90 = (point1[0], pos[1])
76 dist = max(abs(point1[0] - pos[0]), abs(point1[1] - pos[1]))
77 pos45 = (point1[0] + dist, point1[1] + dist)
78 pos135 = (point1[0] + dist, point1[1] - dist)
79 pos225 = (point1[0] - dist, point1[1] - dist)
80 pos305 = (point1[0] - dist, point1[1] + dist)
81 min_dist = 9999999
82 new_pos = point1
83 for cand in [pos0, pos90, pos45, pos135, pos225, pos305]:
84 dist = (pos[0] - cand[0]) ** 2 + (pos[1] - cand[1]) ** 2
85 if dist < min_dist:
86 new_pos = cand
87 min_dist = dist
88 return self.point_to_pymunk(new_pos)
89
90 def delete_point(self, index):
91 if index in self.polygons and len(self.polygons[index]) > 0:
92 self.polygons[index].pop()
93
94 def close_poly(self, index):
95 """Attempts to close the current polygon.
96
97 We allow a small additional step to close the polygon, but
98 it's limited as it's a magic point addition"""
99 if len(self.polygons[index]) < 2:
100 # Too small
101 return False
102 first = self.polygons[index][0]
103 if self.fix_angle(index, self.point_to_pygame(first)) == first:
104 self.add_point(index, self.point_to_pygame(first))
105 return True
106 candidates = [(first[0] + 10 * i, first[1]) for
107 i in (-3, -2, -1, 1, 2, 3)]
108 candidates.extend([(first[0], first[1] + 10 * i) for
109 i in (-3, -2, -1, 1, 2, 3)])
110 candidates.extend([(first[0] + 10 * i, first[1] + 10 * i) for
111 i in (-3, -2, -1, 1, 2, 3)])
112 candidates.extend([(first[0] + 10 * i, first[1] - 10 * i) for
113 i in (-3, -2, -1, 1, 2, 3)])
114 min_dist = 99999
115 poss = None
116 for cand in candidates:
117 if self.fix_angle(index, self.point_to_pygame(cand)) == cand:
118 dist = (first[0] - cand[0]) ** 2 + (first[1] - cand[1]) ** 2
119 if dist < min_dist:
120 poss = cand
121 if poss is not None:
122 self.add_point(index, self.point_to_pygame(poss))
123 self.add_point(index, self.point_to_pygame(first))
124 return True
125 return False
126
127 def draw(self, surface, topleft, mouse_pos, mouse_poly, filled):
128 self._draw_background(True)
129 # Draw polygons as needed for the editor
130 if filled:
131 self._draw_exterior(True)
132 for index, polygon in self.polygons.items():
133 color = POLY_COLORS[index]
134 if len(polygon) > 1:
135 pointlist = [self.point_to_pygame(p) for p in polygon]
136 pygame.draw.lines(self._surface, color, False, pointlist, 2)
137 if index == mouse_poly and mouse_pos:
138 endpoint = self.fix_angle(index, mouse_pos)
139 pygame.draw.line(self._surface, color,
140 self.point_to_pygame(polygon[-1]),
141 self.point_to_pygame(endpoint))
142 surface_area = pygame.rect.Rect(topleft, SCREEN)
143 surface.blit(self._surface, (0, 0), surface_area)
144
145
146class LevelWidget(Widget):
147
148 def __init__(self, level):
149 super(LevelWidget, self).__init__(pygame.rect.Rect(0, 0,
150 SCREEN[0], SCREEN[1]))
151 self.level = level
152 self.pos = (0, 0)
153 self.filled_mode = False
154 self.mouse_pos = None
155 self.cur_poly = None
156 self._mouse_drag = False
157
158 def _level_coordinates(self, pos):
159 # Move positions to level values
160 if not pos:
161 return (0, 0)
162 return pos[0] + self.pos[0], pos[1] + self.pos[1]
163
164 def _move_view(self, offset):
165 new_pos = [self.pos[0] + offset[0], self.pos[1] + offset[1]]
166 if new_pos[0] < 0:
167 new_pos[0] = self.pos[0]
168 elif new_pos[0] > self.level.x - SCREEN[0]:
169 new_pos[0] = self.pos[0]
170 if new_pos[1] < 0:
171 new_pos[1] = self.pos[1]
172 elif new_pos[1] > self.level.y - SCREEN[1]:
173 new_pos[1] = self.pos[1]
174 self.pos = tuple(new_pos)
175
176 def draw(self, surface):
177 if (self.cur_poly is not None and self.cur_poly in self.level.polygons
178 and len(self.level.polygons[self.cur_poly])):
179 # We have an active polygon
180 mouse_pos = self._level_coordinates(self.mouse_pos)
181 else:
182 mouse_pos = None
183 level.draw(surface, self.pos, mouse_pos, self.cur_poly,
184 self.filled_mode)
185
186 def change_poly(self, new_poly):
187 self.cur_poly = new_poly
188 if self.cur_poly is not None:
189 self.filled_mode = False
190
191 def key_down(self, ev):
192 if ev.key == pgl.K_LEFT:
193 self._move_view((-10, 0))
194 elif ev.key == pgl.K_RIGHT:
195 self._move_view((10, 0))
196 elif ev.key == pgl.K_UP:
197 self._move_view((0, -10))
198 elif ev.key == pgl.K_DOWN:
199 self._move_view((0, 10))
200 elif ev.key in (pgl.K_1, pgl.K_2, pgl.K_3, pgl.K_4, pgl.K_5, pgl.K_6):
201 self.change_poly(ev.key - pgl.K_0)
202 elif ev.key == pgl.K_0:
203 self.change_poly(None)
204 elif ev.key == pgl.K_d and self.cur_poly:
205 self.level.delete_point(self.cur_poly)
206 elif ev.key == pgl.K_f:
207 self.set_filled()
208 elif ev.key == pgl.K_c:
209 self.close_poly()
210
211 def set_filled(self):
212 closed, _ = self.level.all_closed()
213 if closed:
214 self.cur_poly = None
215 self.filled_mode = True
216 else:
217 alert('Not all polygons closed, so not filling')
218
219 def mouse_move(self, ev):
220 old_pos = self.mouse_pos
221 self.mouse_pos = ev.pos
222 if self.cur_poly and old_pos != self.mouse_pos:
223 self.invalidate()
224
225 def mouse_drag(self, ev):
226 if self._mouse_drag:
227 old_pos = self.mouse_pos
228 self.mouse_pos = ev.pos
229 diff = (-self.mouse_pos[0] + old_pos[0],
230 -self.mouse_pos[1] + old_pos[1])
231 self._move_view(diff)
232 self.invalidate()
233
234 def mouse_down(self, ev):
235 if ev.button == 4: # Scroll up
236 self._move_view((0, -10))
237 elif ev.button == 5: # Scroll down
238 self._move_view((0, 10))
239 elif ev.button == 6: # Scroll left
240 self._move_view((-10, 0))
241 elif ev.button == 7: # Scroll right
242 self._move_view((10, 0))
243 elif self.cur_poly and ev.button == 1:
244 # Add a point
245 self.level.add_point(self.cur_poly,
246 self._level_coordinates(ev.pos))
247 elif ev.button == 3:
248 self._mouse_drag = True
249
250 def mouse_up(self, ev):
251 if ev.button == 3:
252 self._mouse_drag = False
253
254 def close_poly(self):
255 if self.cur_poly is None:
256 return
257 if self.level.close_poly(self.cur_poly):
258 alert("Successfully closed the polygon")
259 self.change_poly(None)
260 else:
261 alert("Failed to close the polygon")
262
263
264class PolyButton(Button):
265 """Button for coosing the correct polygon"""
266
267 def __init__(self, index, level_widget):
268 if index is not None:
269 text = "Draw: %s" % index
270 else:
271 text = 'Exit Draw Mode'
272 super(PolyButton, self).__init__(text)
273 self.index = index
274 self.level_widget = level_widget
275
276 def action(self):
277 self.level_widget.change_poly(self.index)
278
279
280class EditorApp(RootWidget):
281
282 def __init__(self, level, surface):
283 super(EditorApp, self).__init__(surface)
284 self.level = level
285 self.level_widget = LevelWidget(self.level)
286 self.add(self.level_widget)
287
288 # Add poly buttons
289 y = 15
290 for poly in range(1, 7):
291 but = PolyButton(poly, self.level_widget)
292 but.rect = pygame.rect.Rect(0, 0, MENU_WIDTH // 2 - MENU_PAD,
293 MENU_BUTTON_HEIGHT)
294 if poly % 2:
295 but.rect.move_ip(MENU_LEFT, y)
296 else:
297 but.rect.move_ip(MENU_LEFT + MENU_WIDTH // 2 - MENU_HALF_PAD,
298 y)
299 y += MENU_BUTTON_HEIGHT + MENU_PAD
300 self.add(but)
301
302 button_rect = pygame.rect.Rect(0, 0, MENU_WIDTH, MENU_BUTTON_HEIGHT)
303
304 end_poly_but = PolyButton(None, self.level_widget)
305 end_poly_but.rect = button_rect.copy()
306 end_poly_but.rect.move_ip(MENU_LEFT, y)
307 self.add(end_poly_but)
308 y += MENU_BUTTON_HEIGHT + MENU_PAD
309
310 fill_but = Button('Fill exterior', action=self.level_widget.set_filled)
311 fill_but.rect = button_rect.copy()
312 fill_but.rect.move_ip(MENU_LEFT, y)
313 self.add(fill_but)
314 y += MENU_BUTTON_HEIGHT + MENU_PAD
315
316 save_but = Button('Save Level', action=self.save)
317 save_but.rect = button_rect.copy()
318 save_but.rect.move_ip(MENU_LEFT, y)
319 self.add(save_but)
320 y += MENU_BUTTON_HEIGHT + MENU_PAD
321
322 close_poly_but = Button('Close Polygon',
323 action=self.level_widget.close_poly)
324 close_poly_but.rect = button_rect.copy()
325 close_poly_but.rect.move_ip(MENU_LEFT, y)
326 self.add(close_poly_but)
327 y += MENU_BUTTON_HEIGHT + MENU_PAD
328
329 quit_but = Button('Quit', action=self.quit)
330 quit_but.rect = button_rect.copy()
331 quit_but.rect.move_ip(MENU_LEFT, y)
332 self.add(quit_but)
333
334 def key_down(self, ev):
335 if ev.key == pgl.K_ESCAPE:
336 self.quit()
337 elif ev.key == pgl.K_s:
338 self.save()
339 else:
340 self.level_widget.key_down(ev)
341
342 def save(self):
343 closed, messages = self.level.all_closed()
344 if closed:
345 self.level.save()
346 # display success
347 alert("Level %s saved successfully." % self.level.name)
348 else:
349 # display errors
350 alert("Failed to save level.\n\n%s" % '\n'.join(messages))
351
352 def mouse_move(self, ev):
353 self.level_widget.mouse_move(ev)
354
355
356if __name__ == "__main__":
357 if len(sys.argv) == 2:
358 level = EditorLevel(sys.argv[1])
359 level.load(pymunk.Space())
360 elif len(sys.argv) == 4:
361 level = EditorLevel(sys.argv[1], int(sys.argv[2]), int(sys.argv[3]))
362 else:
363 print 'Please supply a levelname or levelname and level size'
364 sys.exit()
365 pygame.display.init()
366 pygame.font.init()
367 pygame.display.set_mode((SCREEN[0] + MENU_WIDTH, SCREEN[1]),
368 pgl.SWSURFACE)
369 pygame.display.set_caption('Nagslang Area Editor')
370 pygame.key.set_repeat(200, 100)
371 app = EditorApp(level, pygame.display.get_surface())
372 app.run()
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