public static float MoveAlongVector(MovingObject entity, TimeStamp p1, TimeStamp p2, float timeStep)
{
Vector3 direction = Vector3.Subtract(p2.Vector3, entity.TimePosition);
double distance = direction.Length();
Vector3 movement = Vector3.Normalize(direction);
//Note: This doesn't really work. Different objects travel at different speeds, so having a constant speed here breaks the whole thing. Change the algorithm so that it takes the speeds of different objects into accoutn.
entity.TimePosition += movement*(entity.Acceleration*timeStep)*5;
Vector3 checkVector = Vector3.Subtract(p2.Vector3, entity.TimePosition);
double checkDistance = checkVector.Length();
if(checkDistance > distance )
{
entity.TimePosition = p2.Vector3;
int navigation = (int) (p2.Time - p1.Time);
entity.TimeStamps.Navigate(navigation);
return (float)(checkDistance - distance);
}
return 0;
}
//TODO: Implement a collision detection between moving objects
/// <summary>
/// Handels Collision between a moving object (i.e. the player or an npc) and the level structure
/// </summary>
/// <param name="levelBlock">The levelBlock which the object could collide with</param>
/// <param name="moveableObject">the animatedobject that needs to be checked</param>
public void HandleLevelCollisions(LevelBlock levelBlock, MovingObject moveableObject)
{
if (levelBlock.IntersectRectangle.Intersects(moveableObject.IntersectRectangle))
{
if (moveableObject.PrevPosition.Y > levelBlock.IntersectRectangle.Bottom)
{
moveableObject.Position = moveableObject.PrevPosition;
if (moveableObject is Player)
{
((Player)moveableObject).AbortJump();
}
}
else if (levelBlock.IsAboveLevelObject(moveableObject))
{
moveableObject.Position = new Vector2(moveableObject.Position.X,
levelBlock.Position.Y - moveableObject.Size.Y);
}
else if (levelBlock.Position.X > moveableObject.Position.X)
{
moveableObject.Position = new Vector2(moveableObject.PrevPosition.X, moveableObject.Position.Y);
}
else if (levelBlock.Position.X < moveableObject.Position.X)
{
moveableObject.Position = new Vector2(moveableObject.PrevPosition.X, moveableObject.Position.Y);
}
}
}
private void SpoolMovingObject(MovingObject movingObject, KeyboardState keyboardState, GameTime gameTime)
{
float carry = 0;
TimeStamp p2 = new TimeStamp();
if(keyboardState.IsKeyDown(Keys.Left))
{
if(movingObject.TimeStamps.Index.Next != null)
{
p2 = movingObject.TimeStamps.Index.Next.Value;
carry = TimeStampHelper.MoveAlongVector( movingObject, movingObject.TimeStamps.Index.Value, p2, 5);
if(carry != 0)
{
// ReSharper disable ConditionIsAlwaysTrueOrFalse
if(movingObject.TimeStamps.Index.Next != null)
{
TimeStampHelper.MoveAlongVector(movingObject, movingObject.TimeStamps.Index.Value, movingObject.TimeStamps.Index.Next.Value, carry);
}
// ReSharper restore ConditionIsAlwaysTrueOrFalse
}
}
}
if (keyboardState.IsKeyDown(Keys.Right))
{
if(movingObject.TimeStamps.Index.Previous != null)
{
p2 = movingObject.TimeStamps.Index.Previous.Value;
carry = TimeStampHelper.MoveAlongVector(movingObject, movingObject.TimeStamps.Index.Value, p2, 5);
if(carry != 0)
{
// ReSharper disable ConditionIsAlwaysTrueOrFalse
if(movingObject.TimeStamps.Index.Previous != null)
// ReSharper restore ConditionIsAlwaysTrueOrFalse
{
TimeStampHelper.MoveAlongVector(movingObject, movingObject.TimeStamps.Index.Value, movingObject.TimeStamps.Index.Previous.Value, carry);
}
}
}
}
}
public KeyPressedEventArgs(MovingObject sender, double time,KeyboardState keyboardState)
{
this.sender = sender;
this.time = time;
this.keyboardState = keyboardState;
}
public ActionEventArgs(MovingObject caller, FRect queryRect)
: base(EventType.Action)
{
this.caller = caller;
this.queryRect = queryRect;
}
private void HitWall(MovingObject collider, LevelBlock levelBlock)
{
}