Drag Player Object using Physics 2D

Unity Engine
1

I want to drag a player object to throw coming obstacles in the way. For this purpose, I require to hold the player object and using it, I require to hit upcoming obstacles in the gameplay.

Basically currently I am working on this type of gameplay:

At present I am trying to hit obstacles using this setup:

void Update()
     {   
         Vector2 mousePos = Camera.main.ScreenToWorldPoint(Input.mousePosition);
         Rigidbody2D.position = mousePos;   
     }

Here are the inspector settings:

5130068--507104--player_crosshair_inspector.PNG
5130068--507104--player_crosshair_inspector.PNG774Ă—846 107 KB

Still, the player hitting is jerky or not smooth. Multiple times obstacles get fixed within a player object.

So how to make this hitting proper?

2

You’re just teleporting the Rigidbody2D from position to position instantly and doing that per-frame. I can only assume then that you’re also running the physics simulation during the fixed-update and not per-frame so it runs at the stock fixed-frequency. Instantly setting the position of a Rigidbody2D just means you’re potentially just causing overlaps with other colliders (it isn’t actually moving at all, just appearing in new positions like a teleport) when the sim runs and it also means you won’t get per-frame interpolation either as you’re just stomping over its position.

If you want to “drag” a Rigidbody2D/Collider then you should consider either using Rigidbody2D.MovePosition (with interpolation on) which is actioned when the sim runs or use the TargetJoint2D and configure how fast it moves etc.

I have a GitHub project which shows a lot of the 2D physics working here. It uses a lot of dragging and following the mouse but there’s also a specific scene showing following the mouse with the TargetJoint2D here.

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