基于恒定不一致的运动

Question

我制作了一个属于角色的类，在更新方法中，我使用了尽可能多的物理方法使它逼真地工作，并编辑了值以使运动感觉良好。我最近注意到，当我左右移动时，它以不同的速度移动，不知道多久了。我在开始时声明所有大写命名的变量常量，并使用相同的常量进行移动，所以我不知道是什么原因造成的。

我已尽力找出问题所在并解决，但我什么都没有。

我设置常数的开始：

const float GRAVITY = 1f;
const float AIR_SPEED_COEFFICIENT = 0.4f;
const float TERMINAL_AIR_HORIZONTAL_VELOCITY = 10f;
const float AIR_RESISTANCE = 0.97f;
const float FRICTION = 0.64f;

更新功能：

public void Update(Rectangle floor, GameWindow Window)
{
    jumpFrameCounter++;
    if (Keyboard.GetState().IsKeyDown(Keys.Up) || Keyboard.GetState().IsKeyDown(Keys.W))
    {
        if (jumpFrameCounter > 11 && jumpsUsed < amountOfJumps)
        {
            velocity.Y = -GRAVITY * 16 * jumpHeight;
            jumpsUsed++;
            jumpFrameCounter = 0;
        }
    }
    if (Keyboard.GetState().IsKeyDown(Keys.Left) || Keyboard.GetState().IsKeyDown(Keys.A))
    {
        if (hitbox.Bottom >= floor.Top)
        {
            velocity.X -= RUN_SPEED / 4;
        }
        else
        {
            velocity.X -= airSpeed * AIR_SPEED_COEFFICIENT;
        }
    }
    if (Keyboard.GetState().IsKeyDown(Keys.Right) || Keyboard.GetState().IsKeyDown(Keys.D))
    {
        if (hitbox.Bottom >= floor.Top)
        {
            velocity.X += RUN_SPEED / 4;
        }
        else
        {
            velocity.X += airSpeed * AIR_SPEED_COEFFICIENT;
        }
    }
    if (velocity.X > 0.00001f || velocity.X < -0.00001f && !(Keyboard.GetState().IsKeyDown(Keys.Right) || Keyboard.GetState().IsKeyDown(Keys.D) || Keyboard.GetState().IsKeyDown(Keys.Left) || Keyboard.GetState().IsKeyDown(Keys.A)))
    {
        if (hitbox.Bottom >= floor.Top)
        {
            velocity.X *= FRICTION;
        }
        else
        {
            velocity.X *= AIR_RESISTANCE;
        }

    }
    if (Keyboard.GetState().IsKeyDown(Keys.Down) || Keyboard.GetState().IsKeyDown(Keys.S))
    {
        fastFall = true;
    }

    velocity.Y += GRAVITY * unfloatyness;
    if (fastFall)
    {
        velocity.Y += 6 * GRAVITY;
    }

    if (hitbox.Bottom >= floor.Top)
    {
        if (velocity.X > RUN_SPEED * groundSpeed)
        {
            velocity.X = RUN_SPEED * groundSpeed;
        }
        else if (velocity.X < -RUN_SPEED * groundSpeed)
        {
            velocity.X = -RUN_SPEED * groundSpeed;
        }
    }
    else
    {
        if (velocity.X > TERMINAL_AIR_HORIZONTAL_VELOCITY * airSpeed)
        {
            velocity.X = TERMINAL_AIR_HORIZONTAL_VELOCITY * airSpeed;
        }
        else if (velocity.X < -TERMINAL_AIR_HORIZONTAL_VELOCITY * airSpeed)
        {
            velocity.X = -TERMINAL_AIR_HORIZONTAL_VELOCITY * airSpeed;
        }
    }

    position += velocity;

    hitbox = new Rectangle((int)position.X, (int)position.Y, fighterTexture.Width, fighterTexture.Height);

    if (hitbox.Bottom > floor.Top && velocity.Y > 0)
    {
        position.Y = floor.Top - fighterTexture.Height;
        jumpsUsed = 0;
        fastFall = false;
        velocity.Y = -1f;
    }
    if (hitbox.Left < 0)
    {
        position.X = 0;
    }
    else if (hitbox.Right > Window.ClientBounds.Width)
    {
        position.X = Window.ClientBounds.Width - fighterTexture.Width;
    }
    if (hitbox.Top < 0)
    {
        position.Y = 0;
    }
    else if (hitbox.Bottom > Window.ClientBounds.Height)
    {
        position.Y = Window.ClientBounds.Bottom - fighterTexture.Height;
    }
}

Answer 1

另一答案