protected override void ApplyRotation(float delta, Physics2DDirectBodyState state)
{
if (Vel.Length() > 0f || RotateBy != 0)
{
Transform2D xform = state.Transform.Rotated(MathU.LerpAngle(state.Transform.Rotation, RotateBy == 0 ? LinearVelocity.Angle() + Mathf.Deg2Rad(90) : RotateBy,
Type.RotationSpeed * delta * (Speed / Type.MaxSpeed) + Mathf.Abs(RotateBy / Mathf.Tau)) - state.Transform.Rotation);
state.Transform = xform;
}
}
private void HandlerControl(float seconds)
{
if (!isDead && openControl)
{
float maxSpeed = SpaceWarConfig.SpeedMax;
float accel = SpaceWarConfig.SpeedAccel;
if (stillTimer < 0)
{
// 硬直状态
// maxSpeed *= cStillSpeedScale;
accel *= SpaceWarConfig.StillSpeedScale;
}
#region 获取键盘输入
bool Up = InputHandler.IsKeyDown(Keys.W);
bool Left = InputHandler.IsKeyDown(Keys.A);
bool Down = InputHandler.IsKeyDown(Keys.S);
bool Right = InputHandler.IsKeyDown(Keys.D);
Vector2 deltaSpeed = new Vector2();
bool noInput = false;
// 左上
if (Up && Left && !Right && !Down)
{
deltaSpeed.X = -cRootTwoDivideTwo;
deltaSpeed.Y = -cRootTwoDivideTwo;
}
// 右上
else if (Up && Right && !Left && !Down)
{
deltaSpeed.X = cRootTwoDivideTwo;
deltaSpeed.Y = -cRootTwoDivideTwo;
}
// 右下
else if (Down && Right && !Up && !Left)
{
deltaSpeed.X = cRootTwoDivideTwo;
deltaSpeed.Y = cRootTwoDivideTwo;
}
// 左下
else if (Down && Left && !Up && !Right)
{
deltaSpeed.X = -cRootTwoDivideTwo;
deltaSpeed.Y = cRootTwoDivideTwo;
}
// 上
else if (Up && !Down)
{
deltaSpeed.X = 0;
deltaSpeed.Y = -1.0f;
}
// 下
else if (Down && !Up)
{
deltaSpeed.X = 0;
deltaSpeed.Y = 1.0f;
}
// 左
else if (Left && !Right)
{
deltaSpeed.X = -1.0f;
deltaSpeed.Y = 0;
}
// 右
else if (Right && !Left)
{
deltaSpeed.X = 1.0f;
deltaSpeed.Y = 0;
}
else
{
noInput = true;
}
#endregion
#region 获得鼠标状态
if (InputHandler.LastMouseLeftDown)
{
Vector2 mousePos = InputHandler.GetCurMousePosInLogic(BaseGame.RenderEngine);
float shootAzi = MathTools.AziFromRefPos(mousePos - this.Pos);
this.Shoot(shootAzi);
}
#endregion
if (!noInput)
{
phisicalUpdater.Azi = MathTools.AziFromRefPos(Vel);
deltaSpeed *= seconds * accel;
Vel += deltaSpeed;
float SpeedAbs = Vel.Length();
if (SpeedAbs > maxSpeed)
{
Vel *= maxSpeed / SpeedAbs;
}
}
else // 衰减
{
// 假设时间间隔是均匀的，并且间隔很小。
if (SpaceWarConfig.SpeedDecay * seconds < 1)
{
Vel *= (1 - SpaceWarConfig.SpeedDecay * seconds);
}
}
phisicalUpdater.Vel = Vel;
}
}
