Question

我想控制我的3D模型，向各个方向移动，但我不知道如何做到这一点。有人有任何想法吗？

Answer 1

您只需提供模型的世界变换效果。

 Matrix World = Matrix.CreateWorld(position, forward, up);

在您的更新方法中，您可以修改位置：

  LastPosition = Position;  

  if (IsKeyDonw(Left)  Position -= Vector3.UnitX * Speed * ElapsedTime; ForwardDirty = true;     
  if (IsKeyDonw(Right)  Position += Vector3.UnitX * Speed * ElapsedTime; ForwardDirty = true;     
  if (IsKeyDonw(Up)  Position -= Vector3.UnitZ * Speed * ElapsedTime;  ForwardDirty = true;     
  if (IsKeyDonw(Down)  Position += Vector3.UnitZ * Speed * ElapsedTime; ForwardDirty = true;     


// the forward is the direction where will point your model.

if (ForwardDirty) {
     Forward = Position - LastPosition;
     Forward.Normalize();
     ForwardDirty = false;
}

你也可以将你的动作建立在前向矢量的基础上，或者平滑角度变化，用当前内插最后的前进，...

如何在XNA上移动3D模型？

1 个答案: