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How Do I Make A Health Bar

I have health bar textures and a working health system but how do i make it into a bar? so how would i change between the images according to how much health is left out of 100??

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asked May 13, 2010 at 01:31 PM

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You can try this tutorial if you want to create a dynamic health bar that also changes color according to the amount of health left. This is all done with the new UI from UNITY 4.6: Health bar turorial

Oct 18, 2014 at 05:34 AM Artifactx
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5 answers: sort voted first

Have a look at this answer, which gives source code for display health bars using the new GUI system.

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answered May 13, 2010 at 03:14 PM

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duck ♦♦
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works great thanks I had to change it a bit to make it for health and get rid of the box around it but otherwise it works perfectly!

May 14, 2010 at 04:25 AM Nallac

the link doesn't seem to work anymore. can you make a new one? Thanks!

Jun 16, 2011 at 10:49 PM cidmodder
Aug 07, 2011 at 09:10 PM SisterKy

fixed the link!

Jun 04, 2014 at 09:21 AM duck ♦♦

If you would like to use the new Unity UI system to create a Health bar. Go to this link

Health Bar Unity 4.6

Sep 08, 2014 at 06:06 AM GluedBrain
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There's plenty of tutorials with health bars in them. Take a look at the 3D platformer tutorial, it has a round health bar but I'm pretty sure you can work out how to make a straight one. Also take a look at UnityGUI guide.

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answered May 13, 2010 at 02:10 PM

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I know this has been answered a ton of times, but I thought I'd answer it :)

My way of doing this:

  1. Make a UI slider and leave the canvas properties the same. Turn off interactable in the properties of the slider.

  2. Make a health variable in a script attached to the player.

  3. Make a public GameObject variable in a script attached to the healthbar. Drag the player in.

  4. Write

    using UnityEngine.UI;


 using UnityEngine;

  1. Make a public Slider and do

    SliderVar = GetComponent ();

SliderVar being the slider type variable.

  1. Write this code in update:

    SliderVar.value = PlayerVar.GetComponent ().HealthVar;

PlayerVar being the public GameObject you wrote in the health script, PlayerScript being the player's script, and HealthVar being the health variable in the player's script.

Hope this helps :-)

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answered Jan 23 at 01:24 PM

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Here is a way to set this up for the player's health in case anyone is looking for that solution in the future (in C#).

This will work perfectly if you have a script attached to your main character (in this example PlayerMoveScript) with two public static variables for the player's current health (playerHealth), and their maximum health (playerHealthTotal). Just make sure that their maximum health is a float or the division will not work properly.

You can create two textures in Photoshop and size them to be identical to the Vector 2 (size) variable. Once you import the textures into Unity (.PSD extension works fine) you can switch the texture type from Texture to GUI in the Inspector.

Hope this helps someone!

     using UnityEngine;
     using System.Collections;
     public class PlayerHealthBarScript : MonoBehaviour
     public GUIStyle progress_empty;
     public GUIStyle progress_full;
     //current progress
     public float barDisplay;
     Vector2 pos = new Vector2(10,50);
     Vector2 size = new Vector2(250,50);
     public Texture2D emptyTex;
     public Texture2D fullTex;
     void OnGUI()
     //draw the background:
     GUI.BeginGroup(new Rect(pos.x, pos.y, size.x, size.y), emptyTex, progress_empty);
     GUI.Box(new Rect(pos.x, pos.y, size.x, size.y), fullTex, progress_full);
     //draw the filled-in part:
     GUI.BeginGroup(new Rect(0, 0, size.x * barDisplay, size.y));

     GUI.Box(new Rect(0, 0, size.x, size.y), fullTex, progress_full);
     void Update()
     //the player's health
     barDisplay = PlayerMoveScript.playerHealth/PlayerMoveScript.playerHealthTotal;
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answered Feb 08, 2013 at 10:37 AM

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And you know, you can use horizontal slider its just 1 line of code

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answered Jul 30, 2014 at 05:13 AM

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asked: May 13, 2010 at 01:31 PM

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Last Updated: Jan 23 at 01:24 PM