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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', 'fade_step')
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
self.fade_step = 0
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 fade_to_black(self, steps):
hue = self.color.to_HSV().h()
sat = self.color.to_HSV().s()
value = self.color.to_HSV().v()
new_color = color.HSV(hue, sat, value - value / steps * self.fade_step).to_RGB()
self.fade_step += 1
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)
if fish.is_diamond:
return coverage * scale
return coverage * 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 * 75
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.started_fade_tick = None
self.depth = 0
self.send_event('disable image', {'name': 'jellyfish'})
self.send_event('disable image', {'name': 'dolphin'})
self.send_event('disable image', {'name': 'boat'})
self.send_event('disable image', {'name': 'nemo'})
self.send_event('disable image', {'name': 'dory'})
self.send_event('disable image', {'name': 'whale'})
self.send_event('disable image', {'name': 'eel'})
self.send_event('disable image', {'name': 'stingray'})
self.send_event('disable image', {'name': 'shark'})
def update(self):
event = self.recv_event()
if self.depth <= self.MAX_DEPTH:
if event and event[0] == 'spawn':
new_fish = Fish.by_type(event[1]['type'])
if new_fish:
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 == 1:
"""boat, dolphin"""
self.send_event('enable image', {'name': 'boat'})
self.send_event('enable image', {'name': 'dolphin'})
elif self.depth == 2:
"""dolphin, jellyfish"""
self.send_event('disable image', {'name': 'boat'})
self.send_event('enable image', {'name': 'jellyfish'})
elif self.depth == 3:
"""jellyfish, nemo, dory, whale"""
self.send_event('disable image', {'name': 'dolphin'})
self.send_event('enable image', {'name': 'nemo'})
self.send_event('enable image', {'name': 'dory'})
self.send_event('enable image', {'name': 'whale'})
elif self.depth == 4:
"""nemo, dory, whale, shark"""
self.send_event('disable image', {'name': 'jellyfish'})
self.send_event('enable image', {'name': 'shark'})
elif self.depth == 5:
"""whale, shark, stingray"""
self.send_event('disable image', {'name': 'nemo'})
self.send_event('disable image', {'name': 'dory'})
self.send_event('enable image', {'name': 'stingray'})
elif self.depth == 6:
"""stingray, eel"""
self.send_event('disable image', {'name': 'whale'})
self.send_event('disable image', {'name': 'shark'})
self.send_event('enable image', {'name': 'eel'})
else:
self.send_event('disable image', {'name': 'stingray'})
self.send_event('disable image', {'name': 'eel'})
fade_time = 5 # sec
if self.started_fade_tick is None:
self.started_fade_tick = self.tick_count
if self.tick_count > self.started_fade_tick + FRAME_RATE * fade_time:
self.stop()
return
for col in self.lights:
for light in col:
light.fade_to_black(fade_time * FRAME_RATE)
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