1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
|
from __future__ import division
import color
from color import Vector
import random
import constants
from constants import *
import math
from show import Show
from fish_types import Fish
class Light(object):
"""Represent a bridge light and its state."""
__slots__=('light', 'color', 'transitioning_to', 'x', 'y', 'step')
def __init__(self, x, y, light):
"""Store all facts about a light."""
self.light = light
self.color = color.black
self.transitioning_to = self.color
self.step = 0
self.x = x
self.y = y
def update(self, depth, fishes):
"""Change color depending on where the fish is."""
if abs(self.transitioning_to - self.color) <= self.step:
self.transitioning_to = pick_HSV(depth).to_RGB()
self.step = (random_change()
* abs(self.color - self.transitioning_to))
new_background = transition(
self.color, self.transitioning_to, self.step
)
self.color = new_background
new_color = new_background
for fish in fishes:
coverage = compute_coverage(fish, self.x, self.y)
if coverage > 0.01:
fish_color = fish.color_at(self.x, self.y)
new_color = coverage * fish_color + (1 - coverage) * new_color
self.light.setRGBRaw(
*map(lambda x: clamp(0, x, 1), new_color.components)
)
def compute_coverage(fish, x, y):
"""Calculate the coverage of a fish over a box."""
middle_of_fish = fish.x + fish.width / 2
middle_of_panel = x + 0.5
diff = abs(middle_of_fish - middle_of_panel) / (fish.width / 2)
scale = 1 - diff
min_x = min(max(x, fish.x), x + 1)
max_x = max(min(x+1, fish.x + fish.width), x)
min_y = min(max(y, fish.y), y + 1)
max_y = max(min(y+1, fish.y + fish.height), y)
coverage = (max_x - min_x) * (max_y - min_y)
return coverage * scale * fish.alpha_at(x, y)
def pick_HSV(depth):
"""Return a random color in an appropriate interval."""
min_hue = constants.MIN_HUE + (10/360)*depth
min_saturation = constants.MIN_SATURATION + 0.05*depth
hue = random.random() * (constants.MAX_HUE - min_hue) + min_hue
saturation = random.random() * (MAX_SATURATION - min_saturation) + min_saturation
value = random.random() * (MAX_VALUE - MIN_VALUE) + MIN_VALUE
return color.HSV(hue, saturation, value)
def transition(start, end, step):
"""Return a vector equal to (end - start) * step + start."""
if start == end:
return start
diff_vector = end - start
step_vector = diff_vector / abs(diff_vector) * step
result = step_vector + start
return result
def random_change():
"""Return a random amount that a light should change each frame."""
min_time = int(constants.MIN_TIME * FRAME_RATE)
max_time = int(MAX_TIME * FRAME_RATE)
return 1 / random.randint(min_time, max_time)
def clamp(low, x, high):
"""Return v such that low <= v <= high and |x - v| is minimal."""
return max(low, min(x, high))
class FishShow(Show):
# 1 minute show
TICKS_PER_DEPTH = FRAME_RATE * 10
MAX_DEPTH = 6
def init(self):
self.lights = [Light(x, y, self.bridge.get_light(x, y))
for y in xrange(self.bridge.HEIGHT)
for x in xrange(self.bridge.WIDTH)]
self.fishes = set()
self.tick_count = 0
self.depth = 0
def update(self):
event = self.recv_event()
if event and event[0] == 'spawn':
new_fish = Fish.by_type(event[1]['type'])
self.fishes.add(new_fish)
for fish in list(self.fishes):
if not fish.update():
self.fishes.remove(fish)
for light in self.lights:
light.update(self.depth, self.fishes)
self.tick_count += 1
if self.tick_count % self.TICKS_PER_DEPTH == 0:
self.depth += 1
print("DEPTH: ", self.depth)
if self.depth > self.MAX_DEPTH:
self.stop()
|
