python乌龟模块中的推力和加速度有问题

如何解决python乌龟模块中的推力和加速度有问题

我正在尝试编写一艘在放开“w”后保持其动力的船。但是，我也希望它在放开“w”后逐渐变慢。我得到了一艘不错的船，但有时当我在向某个方向前进后按“w”时，船就会飞起来。有什么办法可以增加最高速度或让它变慢吗？

self.thrust = 0.0
self.acceleration = 0.0001




self.dx += math.cos(math.radians(self.heading)) * self.thrust
self.dy += math.sin(math.radians(self.heading)) * self.thrust




def accelerate(self):
    self.thrust += self.acceleration

def decelerate(self):
    self.thrust = 0

解决方法

如果您希望它在不按“w”时逐渐减速，那么您可能希望它以相同的速度或更快的速度运行。此代码将使其以相同的速度运行。这应该适用于任何 Python IDE。

假设你的船是一只乌龟。

import turtle
Win = turtle.screen()
Boat = turtle.Turtle()

如果你想让它看起来也像一艘船，你可以这样做：

screen.adshape(Saved Document Direction)
Boat.shape(Saved Document Direction)

否则，您可以创建自己的形状。现在，我们希望它以恒定速度运行，同时按下“w”：所以：

def Constant_Speed():
    Boat.speed(Speed You Want it to Go)
Win.listen()
Win.onkeypress(Constant_Speed,"w")

否则，它应该会变慢。

Initial_Speed = Initial Speed
Boat.speed(Initial_Speed)
Initial_Speed *= Fraction of what you want it to be in/decimal

所以，如果你用变量替换，这应该可以工作：

import turtle
Win = turtle.screen()
Boat = turtle.Turtle()
screen.adshape(Saved Document Direction)
Boat.shape(Saved Document Direction)
def Constant_Speed():
    Boat.speed(Speed You Want it to Go)
Win.listen()
Win.onkeypress(Constant_Speed,"w")
Initial_Speed = Initial Speed
Boat.speed(Initial_Speed)
Initial_Speed *= Fraction of what you want it to be in/decimal and must be less than 1

但是如果你想让它跑得更快，而不是匀速怎么办？然后转到 def Constant_Speed() 部分。您可以重命名它：def Go_Faster() 现在，代码：

Speed = Initial_Speed
Boat.speed(Speed)
Speed *= Times you want to increase speed by

还有：将最后一行更改为：

Initial_Speed2 = Initial Speed * Fraction of what you want it to be in/decimal and must be less than 1

用你的变量。现在，这应该有效：

import turtle
Win = turtle.screen()
Boat = turtle.Turtle()
screen.adshape(Saved Document Direction)
Boat.shape(Saved Document Direction)
def Go_Faster():
    Speed = Initial_Speed()
    Boat.speed(Speed)
    Speed *= Times you want to increase by
Win.listen()
Win.onkeypress(Constant_Speed,"w")
Initial_Speed = Initial Speed
Boat.speed(Initial_Speed)
Initial_Speed2 = Initial Speed * Fraction of what you want it to be in/decimal and must be less than 1