Adding Sound to a Button (SOLVED)

[tierdal]

Hi all! While making a main menu I came up to a small problem. Everything is fine BUT I cannot figure out how to Assign sound effects (like a little beep) to a Button within the GUI. I want it to be so where when I mouse over an Item on the menu, that sound is played. If you need more information, please let me know.

[Khris]

You need a state change loop, like this:

Code: ags

// this line above repeatedly_execute_always
Button *old_button;

  // inside repeatedly_execute_always
  GUIControl *gc = GUIControl.GetAtScreenXY(mouse.x, mouse.y);
  Button *b;
  if (gc != null) b = gc.AsButton;

  if (b != old_button && b != null) { // mouse has just entered a button
    if (b.OwningGUI == gMenu) {
      // code here, e.g. aButtonSound.Play();
    }
  }
  old_button = b;

Edit: corrected code

[tierdal]

Thank you so much, however I have 2 new questions:

1. Is it possible to add sound to just one of the buttons or just to a certain GUI?

2. (I dont think there is a fix for this) but my menu buttons are stacked up in a column, and when I move mouse over them only 1 or 2 sounds play for the whole menu of 6 buttons, to hear the sound again i have to move mouse left or right from the GUI itself..

[Khris]

Both are easily possible, and my code was faulty anyway.
It should work now even if the mouse goes directly from button to button. I also added a check for the GUI; just replace "gMenu" with your menu GUI's name.

[tierdal]

kudos to you, good sir. works perfectly!

[tierdal]

Coming back to the topic of Buttons...

I have this code and I'm looking for a way to simplify it but nothing comes to mind:
(what it does is it changes the font color to black as mouse moves over it and back to white when mouse moves away from it)

Code: AGS

/*=======================  Menu BUTTON SOUNDS & ANIMATION & COLOR  ============================ */  

  GUIControl *gc = GUIControl.GetAtScreenXY(mouse.x, mouse.y);
  Button *b;
  int IsOverButton = false;
  
  if (gc != null) b = gc.AsButton;
 
  if (b != old_button && b != null) { // mouse has just entered a button
    if (b.OwningGUI == gMainMenu) {
      //IsOverButton = true;                                                  //BUTTON SOUND
      aButton_16.Play();
    }  
  }
  
//Button Font Color Changer
  if (b == Main_NewGame) {
      Main_NewGame.TextColor = 0;
       Main_LoadGame.TextColor = 65535;
       Main_Options.TextColor = 65535;
       Main_Credits.TextColor = 65535;
       Main_Extras.TextColor = 65535;
       Main_Help.TextColor = 65535;
       Main_Exit.TextColor = 65535;
     } else if (b == Main_LoadGame) {
       Main_LoadGame.TextColor = 0;
       Main_NewGame.TextColor = 65535;
       Main_Options.TextColor = 65535;
       Main_Credits.TextColor = 65535;
       Main_Extras.TextColor = 65535;
       Main_Help.TextColor = 65535;
       Main_Exit.TextColor = 65535;
     } else if (b == Main_Options) {
       Main_Options.TextColor = 0;
       Main_NewGame.TextColor = 65535;
       Main_LoadGame.TextColor = 65535;
       Main_Credits.TextColor = 65535;
       Main_Extras.TextColor = 65535;
       Main_Help.TextColor = 65535;
       Main_Exit.TextColor = 65535;
     } else if (b == Main_Credits) {
       Main_Credits.TextColor = 0;
       Main_NewGame.TextColor = 65535;
       Main_LoadGame.TextColor = 65535;
       Main_Options.TextColor = 65535;
       Main_Extras.TextColor = 65535;
       Main_Help.TextColor = 65535;
       Main_Exit.TextColor = 65535;
     } else if (b == Main_Extras) {
       Main_Extras.TextColor = 0;
       Main_NewGame.TextColor = 65535;
       Main_LoadGame.TextColor = 65535;
       Main_Options.TextColor = 65535;
       Main_Credits.TextColor = 65535;
       Main_Help.TextColor = 65535;
       Main_Exit.TextColor = 65535;
     } else if (b == Main_Help) {
        Main_Help.TextColor = 0;
       Main_NewGame.TextColor = 65535;
       Main_LoadGame.TextColor = 65535;
       Main_Options.TextColor = 65535;
       Main_Credits.TextColor = 65535;
       Main_Extras.TextColor = 65535;
       Main_Exit.TextColor = 65535;
     } else if (b == Main_Exit) {
       Main_Exit.TextColor = 0;
       Main_NewGame.TextColor = 65535;
       Main_LoadGame.TextColor = 65535;
       Main_Options.TextColor = 65535;
       Main_Credits.TextColor = 65535;
       Main_Extras.TextColor = 65535;
       Main_Help.TextColor = 65535;
     } else {
       Main_NewGame.TextColor = 65535;
       Main_LoadGame.TextColor = 65535;
       Main_Options.TextColor = 65535;
       Main_Credits.TextColor = 65535;
       Main_Extras.TextColor = 65535;
       Main_Help.TextColor = 65535;
       Main_Exit.TextColor = 65535;  
     }
    
  old_button = b;
  //END BUTTON SOUNDS

EDIT: i tried doing a while loop and it crashed

[Khris]

What you do is loop through all the controls, set them to white, then set b's text to black.

Code: ags

  int i;
  GUIButton gb;
  while (i < gMainMenu.ControlCount) {
    gb = gMainMenu.Controls[i].Asbutton;
    if (gb != null) gb.TextColor = 15;  // white
    i++;
  }
  if (b != null) b.TextColor = 0;

But there's of course another possibility:

Code: ags

  if (b != old_button && b != null) { // mouse has just entered button b
    if (b.OwningGUI == gMainMenu) {
      aButton_16.Play();  //BUTTON SOUND
      b.TextColor = 0;
    }  
  }

  if (b != old_button && old_button != null) { // mouse has just left the button old_button
    if (old_button.OwningGUI == gMainMenu) {
      old_button.TextColor = 15;  // white
    }  
  }

The crash you got was probably a null pointer error, right?
You get those whenever you use aaaaa.bbbbb in your code and aaaaa happens to be null.

[tierdal]

thanks works like a charm