1 # Boyd, the friendly, misunderstood turnip loving, light hating space mould
6 import pymunk.pygame_util
11 from .constants import (SCREEN_SIZE, MOULD_CATEGORY, OBSTACLE_CATEGORY,
13 from .loader import loader
14 from .sound import sound
16 MOULD_FILTER = pymunk.ShapeFilter(
17 mask=MOULD_CATEGORY | OBSTACLE_CATEGORY,
18 categories=MOULD_CATEGORY)
20 EAT_TURNIP_FILTER = pymunk.ShapeFilter(mask=TURNIP_CATEGORY)
29 MOULD_STAGES = [15, 25]
32 class Mould(pymunk.Body):
33 """A segment of Boyd"""
35 def __init__(self, gamestate, space, pos):
36 super(Mould, self).__init__(0, 0, pymunk.Body.STATIC)
38 self._shape = pymunk.Circle(self, 16)
39 space.add(self, self._shape)
40 self._shape.filter = MOULD_FILTER
41 self._resistances = {}
45 self.has_eyeball = False
48 def pygame_pos(self, surface):
49 """Convert to pygame coordinates and offset position so
50 our position is the centre of the image."""
51 # The odd sign combination is because of the pymunk / pygame
52 # transform, but we do it this way to exploit Vec2d math magic
53 return pymunk.pygame_util.to_pygame(self.position + (-16, 16), surface)
58 ('mouldA.png', 'mouldB.png', 'mouldC.png'))
59 size = "16" if self._age < MOULD_STAGES[0] else "32" if self._age < MOULD_STAGES[1] else "64"
60 self._img = loader.load_image(size, name)
63 def get_eyeball(self):
66 ('eyeballA.png', 'eyeballB.png', 'eyeballC.png'))
67 self._eyeball = loader.load_image("32", name)
70 def tick(self, gamestate, space, moulds):
71 """Grow and / or Die"""
75 # we regain a health every tick, so we heal in the dark
76 if self._health < MAX_HEALTH:
81 if (self._age % SPAWN_RATE) == 0 and len(moulds) < MAX_ELEMENTS:
82 # Spawn a new child, if we can
84 choice = random.randint(0, 3)
86 pos = self.position + (0, 24)
88 pos = self.position + (24, 0)
90 pos = self.position + (-24, 0)
92 pos = self.position + (0, -24)
94 if pos[0] < 0 or pos[0] >= SCREEN_SIZE[0]:
96 if pos[1] < 0 or pos[1] >= SCREEN_SIZE[1]:
98 # Check for free space
99 # We allow some overlap, hence not checking full radius
100 query = space.point_query(pos, 8, MOULD_FILTER)
103 # if not isinstance(x.shape.body, Mould):
104 # print x.shape, x.shape.body
107 child = Mould(gamestate, space, pos)
108 child._health = self._health
111 if random.randint(0, 10) < 2:
112 sound.play_sound("mouth_pop_2a.ogg")
114 if self._age in MOULD_STAGES:
117 self._img = None # invalidate cached image
119 if self._age > MOULD_STAGES[1] and random.randint(0, 500) < 1:
120 # Maybe we grow an eyeball
121 self.has_eyeball = True
123 if self._age > MAX_AGE:
125 space.remove(self, self._shape)
129 # Check for turnips we can eat
130 # Note that we can only eat a tick after we spawn
131 query = space.point_query(self.position, 16, EAT_TURNIP_FILTER)
133 query[0].shape.body.turnip.eaten = True
136 def damage(self, light, space, moulds):
137 """Take damage for light, adjusted for resistances."""
138 self._health -= light.base_damage()
139 if self._health <= 0 and self._age <= MAX_AGE:
141 space.remove(self, self._shape)
149 def __init__(self, gamestate, space):
151 for position in gamestate.get_spawn_positions():
152 seed = Mould(gamestate, space, position)
153 self._moulds.append(seed)
154 self._image = pygame.surface.Surface(SCREEN_SIZE)
155 self._image = self._image.convert_alpha(pygame.display.get_surface())
158 def _draw_moulds(self):
159 self._image.fill((0, 0, 0, 0))
160 for m in self._moulds:
161 self._image.blit(m.get_image(),
162 m.pygame_pos(self._image), None,
164 for m in self._moulds:
166 self._image.blit(m.get_eyeball(), m.pygame_pos(self._image),
169 def tick(self, gamestate, space, lights):
171 # Handle spawn events
172 for mould in self._moulds[:]:
174 if mould.tick(gamestate, space, self._moulds):
177 lit_by = lights.light_query(mould._shape)
179 # Todo: extract colour and intensity from light
180 if mould.damage(light, space, self._moulds):
182 break # we only die once
186 def render(self, surface):
188 surface.blit(self._image, (0, 0), None, 0)
191 return len(self._moulds) > 0