2D Flying to an object, and then passing it.

Regrettably I don't have my code on hand to demonstrate my progress; but, what I'm attempting to do is fly to an object and then keep flying past that object, eventually moving off screen.


I've been able to move to a specific object without issue but I am having difficulties flying PAST said object.

Ultimately I just want to send something in a certain direction and keep it moving that way. This is for a 2D game, similar to Asteroids.

 

You don't need to fly to the object unless the object is moving.

If the object is not moving, I think you can do something like

Code (CSharp):

1.  
2. Vector2 v; // vector I want to move in
3. v = target.position - ship.position;
4.  

Then you just fly in that direction until you're out of the world. You can then do...

Code (CSharp):

1.  
2. v.Normalize();  // to get a vector with magnitude 1
3.  

And multiple each component by the speed you want. Then just do

Code (CSharp):

1.  
2. ship.position = new Vector2(ship.position.x + v.x, ship.position.y + v.y);
3.  

If you're using physics, you have to rotate toward the target point, then add a force to fly in that direction. If there's no drag you'll just keep flying.

It's a whole other issue if the object you're flying to is moving.

There should be plenty out there. Mostly you can just keep turning toward the object you're flying toward, moving in that way, then when you reach the object, just keep flying in the same direction instead of turning again.

Hope that helps

 

I'm sure I can work something out. I found a lot of information but ultimately I had the problem of not being able to fly past the object. There is no drag on the object I'm moving, and it is moving to a stationary target. However, the object does rotate to give the spinning illusion. I'll mock up something when I get a chance and post my findings.

 

I'm actually wondering if rotating the item after a push will make it move in a circle. I have a feeling that it may.