Unity – Scripting – OnGUI – Buttons
Videogames Development – Unity – Code GUI Objects – Buttons
UnityGUI allows you to create a wide variety of highly functional GUIs very quickly and easily. Rather than creating a GUI object, manually positioning it, and then writing a script that handles its functionality, you can do everything at once with just a few lines of code. The code produces GUI controls that are instantiated, positioned and handled with a single function call.
Simple Text Button
1. Assign the script to the Camera:
#pragma strict
function Start () {
}
function OnGUI () {
if (GUI.Button (Rect (10,10,150,100), "I am a button")) {
print ("You clicked the button!");
}
}
function Update () {
}
Statement:
GUI.Button (Rect (10,10,150,100), “I am a button”)
GUI.Button (Rectangular (x topleft,y topleft,x bottomright,y bottomright), “Button Text”)
Image Button
1. Assign the script to the Camera:
#pragma strict
var btnTexture : Texture;
function OnGUI() {
// Texture Controller
if (!btnTexture) {
Debug.LogError("Please assign a texture on the inspector");
return;
}
if (GUI.Button(Rect(10,10,150,100),btnTexture))
Debug.Log("Clicked the button with an image");
}
2. Select the Camera> ‘Inspector’> Script> DRAG AND DROP Texture from ‘Assets’ to Script> ‘Btn Texture’ variable.
3. Play and enjoy!
Multiple Buttons
1. Assign the script to the Camera:
Left Side Bar:
#pragma strict
function OnGUI() {
// Multiple Buttons - Left Side Bar
if (GUI.Button(Rect(10,10,50,50),"BTN1"))
Debug.Log("Clicked BTN1");
if (GUI.Button(Rect(10,70,50,50),"BTN2"))
Debug.Log("Clicked BTN2");
if (GUI.Button(Rect(10,130,50,50),"BTN3"))
Debug.Log("Clicked BTN3");
if (GUI.Button(Rect(10,190,50,50),"BTN4"))
Debug.Log("Clicked BTN4");
}
Top Left Bar:
#pragma strict
function OnGUI() {
// Multiple Buttons - Top Left Bar
if (GUI.Button(Rect(10,10,50,50),"BTN1"))
Debug.Log("Clicked BTN1");
if (GUI.Button(Rect(70,10,50,50),"BTN2"))
Debug.Log("Clicked BTN2");
if (GUI.Button(Rect(130,10,50,50),"BTN3"))
Debug.Log("Clicked BTN3");
if (GUI.Button(Rect(190,10,50,50),"BTN4"))
Debug.Log("Clicked BTN4");
}
