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Question by adit1 · Feb 13, 2013 at 04:15 AM · camera2dplatformer

2d camera movement

I want to have a threshold where the camera wont move until the object being tracked goes beyond a certain value. My pseudo code looks like this:

 var thresholdX = 5;
 var thresholdY = 5;

 function Update(){
 if(target.position.x > thresholdX){
 //do the lerp transition
 transform.position.x = Mathf.Lerp(transform.position.x, target.transform.position.x + 20, Time.deltaTime);
 }

The problem is it's only applying the transition in one frame. Is there any other way I could achieve this? Something like path based camera.

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Answer by Benproductions1 · Feb 13, 2013 at 08:41 AM

Instead of allways lerping to a certain amount, why not just clamp the camera? It might be a bit jolty, but you can allways apply smoothing form there.

 //Instead of Lerp, use clamp
 //This is just for moving along the X axis, similarly it would have to be done for other axis
 transform.position.x = Mathf.Clamp(transform.position.x, target.position.x + thresholdX, target.position - thresholdX);

Hope this helps, Benproductions1

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avatar image adit1 · Feb 13, 2013 at 10:05 AM 0
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But that's not the problem for me, the logic itself is flawed.

avatar image Benproductions1 · Feb 14, 2013 at 05:31 AM 0
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Sorry, my code was incorrect, but it should do exactly what you described in the firsts paragraph

avatar image AlucardJay · Feb 25, 2013 at 04:50 AM 0
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Just put the two together :

     //do the lerp transition
     transform.position.x = $$anonymous$$athf.Lerp(transform.position.x, target.transform.position.x + 20, Time.deltaTime);
     // clamp the x to between preset values
     transform.position.x = $$anonymous$$athf.Clamp(transform.position.x, target.position.x + thresholdX, target.position - thresholdX);

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