Question

基本上我在大学里有一个任务，我必须在屏幕上显示按下时从屏幕上的xbox控制器按下游戏手柄的按钮。

我有图像来表示游戏手柄按下和所有坐标。我可以在按下按钮时显示按钮...但是。我必须在dPad上按下对角按钮才能显示，没有相应的按钮你需要按“NOT”apearing。我还需要让触发器淡入淡出，因为它们会慢慢被推入最大值。

像这样：Image of how the program should look when keys are pressed

我遇到的问题是，当我向上和向右按压时...所有三个图像都会在屏幕上亮起（而不仅仅是对角线向上/向右图像）。

我基本上在我的绘图方法中设置了IF语句，以便在按下时绘制特定的图像，并用不同的颜色为它们着色，如下所示：

spriteBatch.Begin();
        spriteBatch.Draw(under, underPos, Color.White);
        if (GamePad.GetState(PlayerIndex.One).Triggers.Right == 1.0f)
        {
            spriteBatch.Draw(rightTrigger, rTriggerPos, Color.White);
        }
        if (GamePad.GetState(PlayerIndex.One).Triggers.Left == 1.0f)
        {
            spriteBatch.Draw(leftTrigger, lTriggerPos, Color.White);
        }
        if (GamePad.GetState(PlayerIndex.One).DPad.Right == ButtonState.Pressed)
        {
            spriteBatch.Draw(right, rightPos, Color.Red);
        }
        if (GamePad.GetState(PlayerIndex.One).DPad.Left == ButtonState.Pressed)
        {
            spriteBatch.Draw(left, leftPos, Color.Blue);
        }
        if (GamePad.GetState(PlayerIndex.One).DPad.Up == ButtonState.Pressed)
        {
            spriteBatch.Draw(up, upPos, Color.Yellow);
        }
        if (GamePad.GetState(PlayerIndex.One).DPad.Down == ButtonState.Pressed)
        {
            spriteBatch.Draw(down, downPos, Color.Green);
        }
        if (GamePad.GetState(PlayerIndex.One).DPad.Right == ButtonState.Pressed)
        if (GamePad.GetState(PlayerIndex.One).DPad.Up == ButtonState.Pressed)
        {
            spriteBatch.Draw(upRight, upRightPos, Color.Orange);
        }
        if (GamePad.GetState(PlayerIndex.One).DPad.Down == ButtonState.Pressed)
        if (GamePad.GetState(PlayerIndex.One).DPad.Right == ButtonState.Pressed)
        {
            spriteBatch.Draw(downRight, dRightPos, Color.Brown);
        }
        if (GamePad.GetState(PlayerIndex.One).DPad.Up == ButtonState.Pressed)
        if (GamePad.GetState(PlayerIndex.One).DPad.Left == ButtonState.Pressed)
        {
            spriteBatch.Draw(upLeft, upLeftPos, Color.Cyan);
        }
        if (GamePad.GetState(PlayerIndex.One).DPad.Down == ButtonState.Pressed)
        if (GamePad.GetState(PlayerIndex.One).DPad.Left == ButtonState.Pressed)
        {
            spriteBatch.Draw(downLeft, dLeftPos, Color.Purple);
        }
        spriteBatch.End();

我的问题是我不知道如何将两个IF语句组合成只显示一个对角线图像，你可以同时组合两个IF语句或游戏按下吗？...以及如何获得触发器慢慢增加颜色和透明度......任何人都可以帮助我吗？

Answer 1

使用＆amp;＆amp;可以在If语句中传递多个条件对于AND和||对于OR。

如果仅为了清楚起见，我会使用else而不是多个。只需使用代码中的示例代码段来执行此操作：

else if (GamePad.GetState(PlayerIndex.One).DPad.Up == ButtonState.Pressed && GamePad.GetState(PlayerIndex.One).DPad.Left == ButtonState.Pressed) { spriteBatch.Draw(upLeft, upLeftPos, Color.Cyan); }

如果同时按下UP和LEFT，这将使条件通过。

希望这会让你朝着正确的方向前进。

XNA - 尝试使用IF同时检测2个游戏手柄按下而无济于事

1 个答案: