1 from plomrogue.errors import ArgError
6 class YX(collections.namedtuple('YX', ('y', 'x'))):
8 def __add__(self, other):
9 return YX(self.y + other.y, self.x + other.x)
11 def __sub__(self, other):
12 return YX(self.y - other.y, self.x - other.x)
15 return 'Y:%s,X:%s' % (self.y, self.x)
21 def __init__(self, size=YX(0, 0), init_char = '?'):
23 self.terrain = init_char*self.size_i
25 def __getitem__(self, yx):
26 return self.terrain[self.get_position_index(yx)]
28 def __setitem__(self, yx, c):
29 pos_i = self.get_position_index(yx)
31 self.terrain = self.terrain[:pos_i] + c + self.terrain[pos_i + 1:]
33 self.terrain[pos_i] = c
36 """Iterate over YX position coordinates."""
37 for y in range(self.size.y):
38 for x in range(self.size.x):
43 return self.size.y * self.size.x
45 def set_line(self, y, line):
46 height_map = self.size.y
47 width_map = self.size.x
49 raise ArgError('too large row number %s' % y)
50 width_line = len(line)
51 if width_line > width_map:
52 raise ArgError('too large map line width %s' % width_line)
53 self.terrain = self.terrain[:y * width_map] + line +\
54 self.terrain[(y + 1) * width_map:]
56 def get_position_index(self, yx):
57 return yx.y * self.size.x + yx.x
61 for y in range(self.size.y):
62 yield (y, self.terrain[y * width:(y + 1) * width])
68 def get_directions(self):
70 for name in dir(self):
71 if name[:5] == 'move_':
72 directions += [name[5:]]
75 def get_neighbors(self, pos, map_size):
77 if not hasattr(self, 'neighbors_to'):
78 self.neighbors_to = {}
79 if not map_size in self.neighbors_to:
80 self.neighbors_to[map_size] = {}
81 if pos in self.neighbors_to[map_size]:
82 return self.neighbors_to[map_size][pos]
83 for direction in self.get_directions():
84 neighbors[direction] = self.move(pos, direction, map_size)
85 self.neighbors_to[map_size][pos] = neighbors
88 def undouble_coordinate(self, maps_size, coordinate):
89 y = maps_size.y * coordinate[0].y + coordinate[1].y
90 x = maps_size.x * coordinate[0].x + coordinate[1].x
93 def get_view_offset(self, maps_size, center, radius):
94 yx_to_origin = self.undouble_coordinate(maps_size, center)
95 return yx_to_origin - YX(radius, radius)
97 def pos_in_view(self, pos, offset, maps_size):
98 return self.undouble_coordinate(maps_size, pos) - offset
100 def correct_double_coordinate(self, map_size, big_yx, little_yx):
102 def adapt_axis(axis):
103 maps_crossed = little_yx[axis] // map_size[axis]
104 new_big = big_yx[axis] + maps_crossed
105 new_little = little_yx[axis] % map_size[axis]
106 return new_big, new_little
108 new_big_y, new_little_y = adapt_axis(0)
109 new_big_x, new_little_x = adapt_axis(1)
110 return YX(new_big_y, new_big_x), YX(new_little_y, new_little_x)
112 def move(self, start_pos, direction, map_size):
113 mover = getattr(self, 'move_' + direction)
114 big_yx, little_yx = start_pos
115 uncorrected_target = mover(little_yx)
116 return self.correct_double_coordinate(map_size, big_yx,
121 class MapGeometryWithLeftRightMoves(MapGeometry):
123 def move_LEFT(self, start_pos):
124 return YX(start_pos.y, start_pos.x - 1)
126 def move_RIGHT(self, start_pos):
127 return YX(start_pos.y, start_pos.x + 1)
131 class MapGeometrySquare(MapGeometryWithLeftRightMoves):
133 def move_UP(self, start_pos):
134 return YX(start_pos.y - 1, start_pos.x)
136 def move_DOWN(self, start_pos):
137 return YX(start_pos.y + 1, start_pos.x)
141 class MapGeometryHex(MapGeometryWithLeftRightMoves):
143 def __init__(self, *args, **kwargs):
144 super().__init__(*args, **kwargs)
145 self.fov_map_type = FovMapHex
147 def move_UPLEFT(self, start_pos):
148 if start_pos.y % 2 == 1:
149 return YX(start_pos.y - 1, start_pos.x - 1)
151 return YX(start_pos.y - 1, start_pos.x)
153 def move_UPRIGHT(self, start_pos):
154 if start_pos.y % 2 == 1:
155 return YX(start_pos.y - 1, start_pos.x)
157 return YX(start_pos.y - 1, start_pos.x + 1)
159 def move_DOWNLEFT(self, start_pos):
160 if start_pos.y % 2 == 1:
161 return YX(start_pos.y + 1, start_pos.x - 1)
163 return YX(start_pos.y + 1, start_pos.x)
165 def move_DOWNRIGHT(self, start_pos):
166 if start_pos.y % 2 == 1:
167 return YX(start_pos.y + 1, start_pos.x)
169 return YX(start_pos.y + 1, start_pos.x + 1)
175 def __init__(self, source_map, center):
176 self.source_map = source_map
177 self.size = self.source_map.size
178 self.fov_radius = (self.size.y / 2) - 0.5
179 self.terrain = '?' * self.size_i
181 self.shadow_cones = []
182 self.circle_out(center, self.shadow_process_hex)
184 def shadow_process_hex(self, yx, distance_to_center, dir_i, dir_progress):
185 # Possible optimization: If no shadow_cones yet and self[yx] == '.',
187 CIRCLE = 360 # Since we'll float anyways, number is actually arbitrary.
189 def correct_arm(arm):
194 def in_shadow_cone(new_cone):
195 for old_cone in self.shadow_cones:
196 if old_cone[0] >= new_cone[0] and \
197 new_cone[1] >= old_cone[1]:
198 #print('DEBUG shadowed by:', old_cone)
200 # We might want to also shade hexes whose middle arm is inside a
201 # shadow cone for a darker FOV. Note that we then could not for
202 # optimization purposes rely anymore on the assumption that a
203 # shaded hex cannot add growth to existing shadow cones.
206 def merge_cone(new_cone):
208 for old_cone in self.shadow_cones:
209 if new_cone[0] > old_cone[0] and \
210 (new_cone[1] < old_cone[0] or
211 math.isclose(new_cone[1], old_cone[0])):
212 #print('DEBUG merging to', old_cone)
213 old_cone[0] = new_cone[0]
214 #print('DEBUG merged cone:', old_cone)
216 if new_cone[1] < old_cone[1] and \
217 (new_cone[0] > old_cone[1] or
218 math.isclose(new_cone[0], old_cone[1])):
219 #print('DEBUG merging to', old_cone)
220 old_cone[1] = new_cone[1]
221 #print('DEBUG merged cone:', old_cone)
226 #print('DEBUG CONE', cone, '(', step_size, distance_to_center, number_steps, ')')
227 if in_shadow_cone(cone):
230 if self.source_map[yx] != '.':
231 #print('DEBUG throws shadow', cone)
233 while merge_cone(cone):
236 self.shadow_cones += [cone]
239 step_size = (CIRCLE/len(self.circle_out_directions)) / distance_to_center
240 number_steps = dir_i * distance_to_center + dir_progress
241 left_arm = correct_arm(-(step_size/2) - step_size*number_steps)
242 right_arm = correct_arm(left_arm - step_size)
243 # Optimization potential: left cone could be derived from previous
244 # right cone. Better even: Precalculate all cones.
245 if right_arm > left_arm:
246 eval_cone([left_arm, 0])
247 eval_cone([CIRCLE, right_arm])
249 eval_cone([left_arm, right_arm])
251 def basic_circle_out_move(self, pos, direction):
252 """Move position pos into direction. Return whether still in map."""
253 mover = getattr(self.geometry, 'move_' + direction)
255 if pos.y < 0 or pos.x < 0 or \
256 pos.y >= self.size.y or pos.x >= self.size.x:
260 def circle_out(self, yx, f):
261 # Optimization potential: Precalculate movement positions. (How to check
262 # circle_in_map then?)
263 # Optimization potential: Precalculate what hexes are shaded by what hex
264 # and skip evaluation of already shaded hexes. (This only works if hex
265 # shading implies they completely lie in existing shades; otherwise we
266 # would lose shade growth through hexes at shade borders.)
268 # TODO: Start circling only in earliest obstacle distance.
269 # TODO: get rid of circle_in_map logic
273 #print('DEBUG CIRCLE_OUT', yx)
275 if distance > self.fov_radius:
277 circle_in_map = False
278 yx, _ = self.basic_circle_out_move(yx, 'RIGHT')
279 for dir_i in range(len(self.circle_out_directions)):
280 for dir_progress in range(distance):
281 direction = self.circle_out_directions[dir_i]
282 yx, test = self.circle_out_move(yx, direction)
284 f(yx, distance, dir_i, dir_progress)
290 class FovMapHex(FovMap):
291 circle_out_directions = ('DOWNLEFT', 'LEFT', 'UPLEFT',
292 'UPRIGHT', 'RIGHT', 'DOWNRIGHT')
294 def __init__(self, *args, **kwargs):
295 self.geometry = MapGeometryHex()
296 super().__init__(*args, **kwargs)
298 def circle_out_move(self, yx, direction):
299 return self.basic_circle_out_move(yx, direction)
303 class FovMapSquare(FovMap):
304 circle_out_directions = (('DOWN', 'LEFT'), ('LEFT', 'UP'),
305 ('UP', 'RIGHT'), ('RIGHT', 'DOWN'))
307 def __init__(self, *args, **kwargs):
308 self.geometry = MapGeometrySquare()
309 super().__init__(*args, **kwargs)
311 def circle_out_move(self, yx, direction):
312 self.basic_circle_out_move(yx, direction[0])
313 return self.basic_circle_out_move(yx, direction[1])