Question

我一直致力于角色动作，我创造了一种方法，当按下向上键时使角色跳跃，但角色的动作没有反应。
任何人都可以看到有什么问题？这是我的代码：

构造

public PlayerSprite(string name, string magicTextureName,Vector2 position, Vector2 velocity, AnimatedTextureData textureData, SpritePresentationInfo spritePresentationInfo,SpritePositionInfo spritePositionInfo, Keys leftKey, Keys rightKey, int frameRate, int startFrame, bool bRepeatAnimation)
  : base(name, textureData, spritePresentationInfo, spritePositionInfo, frameRate, startFrame, bRepeatAnimation)

占据位置和速度。

这是在更新中。

if (SpriteManager.GAME.KEYBOARDMANAGER.isFirstKeyPress(Keys.Up))
{
    bPause = false;
    updateJump();
}

updateJump函数

 public void updateJump()
 {
     jumpPosition += jumpVelocity;
     if (Keyboard.GetState().IsKeyDown(Keys.Right))
         jumpVelocity.X = 3f;
     else if (Keyboard.GetState().IsKeyDown(Keys.Left))
         jumpVelocity.X = -3f;
     else
         jumpVelocity.X = 0f;

     if (Keyboard.GetState().IsKeyDown(Keys.Up))
     {
         jumpPosition.Y -= 10f;
         jumpVelocity.Y -= 5f;
         hasJumped = true;
     }
     if (hasJumped == true)
     {
         float i = 1;
         jumpVelocity.Y += 0.15f * i;
     }
     if (jumpPosition.Y + animatedTextureData.Height() >= 450)
     {
         hasJumped = false;
     }
     if (hasJumped == false)
     {
         jumpVelocity.Y = 0f;
     }
 }

我在主要的地方称呼这个

 AnimatedTextureData playerAnimatedTextureData = (AnimatedTextureData)textureManager.Get("PlayerAnimation");
 SpritePresentationInfo playerAnimatedPresentationInfo = new SpritePresentationInfo(playerAnimatedTextureData.FULLSOURCERECTANGLE, 1);
 SpritePositionInfo playerAnimatedPositionInfo = new SpritePositionInfo(new Vector2(100, 700), playerAnimatedTextureData.Width(), playerAnimatedTextureData.Height(), 0, 2, playerAnimatedTextureData.CENTREORIGIN);

 this.playerSprite = new PlayerSprite("PlayerAnimation", "FireballAnimation", new Vector2(50, 50), new Vector2(50, 50), playerAnimatedTextureData, playerAnimatedPresentationInfo, playerAnimatedPositionInfo,Keys.Left, Keys.Right, 10, 0, true);
 spriteManager.Add(playerSprite);

Answer 1

我的猜测：我不知道这个函数是做什么编程的，但是如果它只检测到按下向上键，那么在第一帧之后不再更新跳转。

if (SpriteManager.GAME.KEYBOARDMANAGER.isFirstKeyPress(Keys.Up))
{
    bPause = false;
    updateJump();
}

一旦你纠正了这个并且每个更新周期调用了updateJump（）函数，只要你按住向上键，火球就会很快逃离屏幕。

角色不会在XNA中跳跃

1 个答案: