python_notes/Turtle/Turtle Crossing/car_manager.py

87 lines
3.4 KiB
Python

from car import Car
import random
import turtle
COLORS = ["red", "orange", "yellow", "green", "blue", "purple"]
CAR_TYPES = [["BlueCarRight.gif", "BrightGreenCarRight.gif", "DarkBlueCarRight.gif",
"GreenCarRight.gif", "BMW-Z4Right.gif"],
["BlueCarLeft.gif", "BrightGreenCarLeft.gif", "DarkBlueCarLeft.gif", "GreenCarLeft.gif", "BMW-Z4Left.gif"]]
STARTING_POSITIONS = [(0, (-350, -205)), (0, (-350, -145)), (0, (-350, -80)),
(180, (350, 80)), (180, (350, 145)), (180, (350, 205))]
BASE_MOVE_DISTANCE = 5
MOVE_INCREMENT = 10
class CarManager:
def __init__(self):
self.cars = []
self.lanes = [0, 1, 2, 3, 4, 5]
self.last_lane = -1
for car_shape_list in CAR_TYPES:
for car_shape in car_shape_list:
car_shape = 'graphics/' + car_shape
turtle.register_shape(car_shape)
def create_car(self):
# Makes sure don't get 2 cars in a row in same lane
if len(self.lanes) == 0:
self.lanes = [0, 1, 2, 3, 4, 5]
lane = random.choice(self.lanes)
while lane == self.last_lane:
lane = random.choice(self.lanes)
self.lanes.remove(lane)
self.last_lane = lane
# Set up the car
starting_info = STARTING_POSITIONS[lane]
# Get car type (left or right) by using first index in starting_info, then set random shape (gif) accordingly
index = 0 if starting_info[0] == 0 else 1
shape = random.choice(CAR_TYPES[index])
shape = 'graphics/' + shape
# Create and add car
self.cars.append(Car(shape, starting_info[1], starting_info[0], BASE_MOVE_DISTANCE + random.randint(-1, 5)))
def update_cars(self):
# Remove cars that are finished going on road (off-screen and not coming back)
self.cars = [car for car in self.cars if (car.heading() == 0 and car.xcor() < 350)
or (car.heading() == 180 and car.xcor() > -350)]
# Iterate over remaining cars, and move them
for car in self.cars:
car.move()
def is_collision(self, other):
"""
:param other: A turtle object, or object of a child class of turtle
:return:
"""
# Get edges of other
other_top_edge = other.ycor() + 12
other_bottom_edge = other.ycor() - 12
other_left_edge = other.xcor() - 12
other_right_edge = other.xcor() + 12
# Check each car for whether the distance between edges overlaps
for car in self.cars:
car_top_edge = car.ycor() + 11
car_bottom_edge = car.ycor() - 11
car_left_edge = car.xcor() - 20
car_right_edge = car.xcor() + 20
# It's mom's spaghetti (code)
if (
(
(other_top_edge - car_bottom_edge > 0 and car_top_edge - other_top_edge > 0)
or
(car_top_edge - other_bottom_edge > 0 and other_bottom_edge - car_bottom_edge > 0)
)
and
(
(other_left_edge - car_left_edge > 0 and car_right_edge - other_left_edge > 0)
or
(other_right_edge - car_left_edge > 0 and car_right_edge - other_right_edge > 0)
)
):
return True
return False