Question by Lunier · Mar 09, 2017 at 05:30 PM · rigidbody addforce moveposition

myRigidbody.MovePosition influences the force.

Hello,

somehow this part of my Code:

myRigidbody.MovePosition(targetPosition);

influences this one:

 if (Input.GetMouseButtonDown(0))
         {
             myRigidbody.velocity = Vector2.zero;
             myRigidbody.AddForce(new Vector2(0, upforce));
         }

in that way that the added force isnt as big it was without the moveposition code. Can someone help me?

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hexagonius · Mar 09, 2017 at 05:52 PM 0

can you rephrase, I don't understand your sentence

Lunier hexagonius · Mar 09, 2017 at 05:58 PM 0

 using System.Collections;
 using System.Collections.Generic;
 using UnityEngine;
 
 public class NewBehaviourScript : $$anonymous$$onoBehaviour
 {
 
     public Rigidbody2D myRigidbody;
     public Camera cam;
     private float maxWidth;
     private bool isGrounded;
     private float upforce = 200f;
 
     void Start()
     {
         //Screen.sleepTimeout = SleepTimeout.NeverSleep;
         myRigidbody = GetComponent<Rigidbody2D>();
         if (cam == null)
         {
             cam = Camera.main;
         }
         
         Vector2 upperCorner = new Vector2(Screen.width, Screen.height);
         Vector2 targetWidth = cam.ScreenToWorldPoint(upperCorner);
         float ballWidth = GetComponent<Renderer>().bounds.extents.x;
         maxWidth = targetWidth.x - ballWidth;
     }
     // Update is called once per frame
     void FixedUpdate()
     {
 
         Vector2 rawPosition = cam.ScreenToWorldPoint(Input.mousePosition);
         Vector2 targetPosition = new Vector2(rawPosition.x, transform.position.y);
         float targetWidth = $$anonymous$$athf.Clamp(targetPosition.x, -maxWidth, maxWidth);
         targetPosition = new Vector2(targetWidth, targetPosition.y);
         myRigidbody.$$anonymous$$ovePosition(targetPosition);
 
         if (Input.Get$$anonymous$$ouseButtonDown(0))
         {
             myRigidbody.velocity = Vector2.zero;
             myRigidbody.AddForce(new Vector2(0, upforce));
         }
 
         //myRigidbody.AddForce(Vector2.down * 100);
         
         
     }

Thats my whole code yet. With the line of code to move the object so:

myRigidbody.$$anonymous$$ovePosition(targetPosition);

somehow the object doesnt get the force correctly applied to it.

hexagonius Lunier · Mar 09, 2017 at 06:36 PM 0

ok, doing a move on two axis while trying to apply forces on one or two of the same axis just cannot work. You need to decide if it's a complete axis you want to ignore (like the y axis cause it should be influenced by forces), or if you just calculate everything together and set that as the rigidbodies velocity.
A sidenote to that. Setting velocity is the savest you can do. I tried with $$anonymous$$ovePosition once and it's just not a good way to move a rigidbody. While $$anonymous$$ovePosition complies with the interpolation settings set, it doesn't comply with collision (tried it once, just glitched through a wall).
Bottom line. I would calculate the velocity on the x axis for the mouseposition and leave y as is. Or do some fancy calculation with y so it's half the mouse click and half the force.

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hexagonius · Mar 11, 2017 at 07:57 AM 0

mouse position $$anonymous$$us position (both in world space), normalize times speed. that's the velocity in unit per second towards the target (overshooting).

myRigidbody.MovePosition influences the force.

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