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from __future__ import division
import color as C
import functools
import constants
import random
import math
class Fish(object):
"""Object displayed on the bridge, probably a fish.
Must override color (or color_at), drag, width, height, tailThreshold,
tailDuration, tailAccelMag
"""
def __init__(self, x=None, y=None):
"""Create fish with default parameters."""
if x is not None:
self.x = x
elif not hasattr(self, 'x'):
self.x = 0
if x is not None:
self.y = y
elif not hasattr(self, 'y'):
self.y = 0.5
self.speed = C.Vector(0, 0)
self.tailAcceleration = C.Vector(self.tailAccelMag, 0)
self.tailMoving = False
self.tailMoveCount = 0
@classmethod
def by_type(cls, fish_type):
if (fish_type == 'jellyfish'):
return Jellyfish()
if fish_type == 'dolphin':
return Dolphin()
if fish_type == 'boat':
return Boat()
if fish_type == 'dory':
return Dory()
if fish_type == 'nemo':
return Nemo()
if fish_type == 'whale':
return Whale()
if fish_type == 'stingray':
return Stingray()
if fish_type == 'eel':
return Eel()
if fish_type == 'shark':
return Shark()
def update(self):
"""Swim gently to the other side of the bridge."""
if self.x > constants.BRIDGE_WIDTH or self.x < -self.width:
return False
self.speed += self.drag * self.speed
if abs(self.speed) < self.tailThreshold:
self.tailMoving = True
self.tailThreshold = rand_in_range(0.5, 1.4)
self.fix_direction()
if self.tailMoveCount > self.tailDuration:
self.tailMoveCount = 0
self.tailMoving = False
if self.tailMoving:
self.speed += self.tailAcceleration
self.tailMoveCount += 1
self.x += self.speed.components[0]
self.y += self.speed.components[1]
return True
def fix_direction(self):
min_theta = -0.32
max_theta = 0.32
if self.y < 0:
min_theta = 0
if self.y > 1:
max_theta = 0
#theta = rand_in_range(min_theta, max_theta)
theta = random.gauss(
(max_theta+min_theta)/2, (max_theta - min_theta)/12
)
self.tailAcceleration = C.Vector(self.tailAccelMag, 0).rot2d(theta)
def color_at(self, x, y):
"""May be overridden to provide multicolored fish."""
return self.color
class Jellyfish(Fish):
color = C.HSV(298/360, 89/100, 53/100).to_RGB()
drag = -0.01
width = 15
height = 1.5
tailThreshold = 0.001
tailDuration = 4
tailAccelMag = 0.001
class Dolphin(Fish):
color = C.HSV(18/360, 0/100, 40/100).to_RGB()
drag = -0.09
width = 35
height = 1.5
tailThreshold = 0.7
tailDuration = 2
tailAccelMag = 0.8
gravity = C.Vector(0, -0.01)
direction_fixed = False
def update(self):
"""Swim gently to the other side of the bridge."""
if self.x > constants.BRIDGE_WIDTH or self.x < -self.width:
return False
if not self.direction_fixed:
self.tailAcceleration = self.tailAcceleration.rot2d(math.pi / 32)
self.direction_fixed = True
self.speed += self.drag * self.speed + self.gravity
if self.y <= 0.25:
self.tailMoving = True
if self.tailMoveCount > self.tailDuration:
self.tailMoveCount = 0
self.tailMoving = False
if self.tailMoving:
self.speed += self.tailAcceleration
self.tailMoveCount += 1
self.x += self.speed.components[0]
self.y += self.speed.components[1]
return True
class Boat(Fish):
color = C.HSV(24/360, 45/100, 44/100).to_RGB()
drag = 0
width = 23
height = 1
tailDuration = 1
tailAccelMag = 0.25
tailThreshold = tailAccelMag
y = 1
def fix_direction(self):
pass
class Dory(Fish):
# Need to try this on the bridge
color = C.HSV(235/360, 100/100, 88/100).to_RGB()
drag = -0.1
width = 23
height = 1.5
tailThreshold = 0.7
tailDuration = 2
tailAccelMag = 0.4
class Nemo(Fish):
color = C.HSV(31/360, 100/100, 50/100).to_RGB()
drag = -0.09
width = 23
height = 1.5
tailThreshold = 0.7
tailDuration = 2
tailAccelMag = 0.4
class Whale(Fish):
drag = -0.2
width = 50
height = 2
tailThreshold = 0.7
tailDuration = 3
tailAccelMag = 0.4
white_x_min = 30
white_x_width = 8
white_y_min = 1
white_y_height = 1
def color_at(self, x, y):
"""Mostly copied from compute_coverage.
The point here is to render that white part of the Orca.
"""
white_x_min = self.white_x_min + self.x
white_x_max = white_x_min + self.white_x_width
white_y_min = self.white_y_min + self.y
white_y_max = white_y_min + self.white_y_height
min_x = min(max(x, white_x_min), x + 1)
max_x = max(min(x + 1, white_x_max), x)
min_y = min(max(y, white_y_min), y + 1)
max_y = max(min(y + 1, white_y_max), y)
coverage = (max_x - min_x) * (max_y - min_y)
return C.white * coverage
class Stingray(Fish):
color = C.HSV(0/360, 0/100, 50/100).to_RGB()
drag = -0.09
width = 15
height = 2
tailThreshold = 0.7
tailDuration = 2
tailAccelMag = 0.2
class Eel(Fish):
color = C.HSV(109/360, 83/100, 35/100).to_RGB()
drag = -0.09
width = 23
height = 1.5
tailThreshold = 0.7
tailDuration = 2
tailAccelMag = 0.4
class Shark(Fish):
color = C.HSV(0/360, 0/100, 50/100).to_RGB()
drag = -0.2
width = 50
height = 2
tailThreshold = 0.7
tailDuration = 3
tailAccelMag = 0.4
def rand_in_range(low, high):
return random.random() * (high - low) + low
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