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Hi, I've been looking for a scrip that creates a laser from the characters gun. The game is in Top-down view and so i don't want a cursor or anything i just want a laser to go from the specific character point(Maybe an object that beams out the laser forward of the character?). However, I managed to make a laser with the class LineRenderer, but... I wasn't able to get it to follow the character while he was turning or even get it too look right since it's "glowing". I want a red and transparent straight line to go forward.

So to define exactly what i'm looking for i'll list it nicely:

A "laserbeam" (Red and transparent)
Coming from an object which is connected to the Player prefab (So it will follow while the character spinns)
stops when hitting a tree or another object

(- and can be turned off by a button click)

Nor should it continue forward for all eternity either, the line length should be editable. Could this be done by using some kind if sprite? How?

I know its much to ask for but i've been looking everywhere for this!:shock: Would be nice if this could be shared with the Unity3D community since all i've found is people who are looking for the exact same thing.

Ps: Scripting isn't my strong side so be nice & explain carefully!

Thanks, N0tiC!

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Answer 1

0

I have a script where I'm doing something like this, but with several lines. Ingore the 'first line' part of the script, just read 'laser'. I should've edited but.. I'm lazy. ;)

var maxDistance : float = 2

function Start () {
    GetComponent(LineRenderer).useWorldSpace = true;
}

function Update () {
    var laser = GetComponent(LineRenderer);
    var forward = transform.forward;
    var hit : RaycastHit;

    firstLine.SetPosition(0, transform.position);

    if(Physics.Raycast(transform.position, forward, hit) && Vector3.Distance(transform,position, hit) >= maxDistance)){
        laser.SetPosition(1, hit.point);

    }
    else{
        laser.SetPosition(1, transform.TransformDirection(0, 0, MaxDistance));
    }
}

Attach this to an empty gameobject which is childed to your gun. Make sure the z-axis is pointing 'character forward'.

answered Apr 01 '11 at 01:08 AM

Joshua
6.4k ● 19 ● 25 ● 70

I could definetly need help finding the laser material. It would be super if you could mail the material to me! Quick question: Why is the "laser" going towards the corner?

Apr 01 '11 at 01:34 AM N0tiC

right so i didn't alter the script because I'm lazy. where it says cueForward is where it is casting forward ( on the z axis). Alter this to change it.

Apr 01 '11 at 01:46 AM Joshua

I've tested what i know and i can't figure out how to do this. The object has the Line Renderer attached to it and its rendering alright. However, the object which i placed in center of the player suddenly moved to the corner and cannot be moved(Doesn't move visualy in the editor, just "in-game", going straight to where it's not suppose to go.).

And i'm pretty sure it's going from the object and hitting the player...

Apr 01 '11 at 01:54 AM N0tiC

Hmm... This is not going anywhere... So i decided to make it very simple for now and get back to it later on(When there finaly is something to work with.). Anyhow... Now: http://xlentprojects.se/laser.jpg

Apr 01 '11 at 03:02 AM N0tiC

Do you have all this done on an empty game object, which is childed to your 'character' or gun with the z axis pointing player - forward? Also, please upvote/select the answer as correct if it's done :) it's nice for me + it will stop the bot from bumping your question for no reason

Apr 01 '11 at 10:57 AM Joshua

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