/// <summary>
/// mech's A.I. function.
/// turns the body left.
/// </summary>
/// <param name="aiBase">current A.I.</param>
/// <param name="gameTime"></param>
public override void OnAITurnLeftEvent(AIBase aiBase)
{
MoveStop();
if (aiBase.IsActive)
{
float fTurnAngleSpeed = SpecData.TurnAngle;
// Turning left
Rotate(new Vector2(fTurnAngleSpeed, 0.0f));
ActionTurn(fTurnAngleSpeed);
}
else
{
if (isMoveBlocked)
{
CollideSphere collideSphere = Collide as CollideSphere;
float movingTime =
(float)HelperMath.Randomi(2) + HelperMath.RandomNormal();
Vector3 simulateAmount =
new Vector3(0.0f, 0.0f, SpecData.MoveSpeed) * movingTime;
simulateAmount = CalculateVelocity(simulateAmount);
Vector3 start =
WorldTransform.Translation + (WorldTransform.Up * 1.0f);
// Test collision
CollisionResult result = HitTestWithWorld(start, Direction);
// clear moving way?
if (result != null)
{
float moveDistance = SpecData.MoveSpeed * movingTime;
float resultDistance = result.distance - collideSphere.Radius;
if (resultDistance > 0.0f)
{
if (resultDistance < moveDistance)
{
// Recalculate moving time for move and stop
movingTime *= resultDistance / moveDistance;
isMoveBlocked = true;
}
else
{
isMoveBlocked = false;
}
}
// Don't move
else
{
isMoveBlocked = true;
}
}
else
{
isMoveBlocked = false;
}
if (isMoveBlocked)
{
// turn right
SetNextAI(AIType.TurnLeft, 90.0f / SpecData.TurnAngle);
}
else
{
SetNextAI(AIType.Move, movingTime);
}
}
else
{
SetNextAI(AIType.Search, HelperMath.RandomNormal());
}
}
}
