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
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
|
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', 'result_color')
def __init__(self, x, y, light):
"""Store all facts about a light."""
self.light = light
self.color = color.black
self.result_color = self.color
self.transitioning_to = self.color
self.step = 0
self.x = x
self.y = y
def update_base(self, depth):
"""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
self.result_color = new_background
def update_fish(self, fish):
coverage = compute_coverage(fish, self.x, self.y)
fish_color = fish.color_at(self.x, self.y)
self.result_color = coverage * fish_color + (1 - coverage) * self.result_color
def blit(self):
self.light.setRGBRaw(
*map(lambda x: clamp(0, x, 1), self.result_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 col in self.lights:
for light in col:
light.update_base(self.depth)
for fish in list(self.fishes):
if not fish.update():
self.fishes.remove(fish)
for x in xrange(int(fish.x), int(fish.x+fish.width+1)):
if x < len(self.lights):
for light in self.lights[x]:
light.update_fish(fish)
for col in self.lights:
for light in col:
light.blit()
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()
|
