Gui Help!

[MOMOTHEREAL]

Hello,

I have basic understanding of the Forge API now.

What I am trying to do is to have a GUI drawn at the top right of the screen when the player has a special helmet.

The problem is that I cannot figure out the event that is triggered when the player changes his helmet, and also check if the player has that helmet when it joins the world to draw that gui. Any help is appreciated!

 

~Momo.

[MOMOTHEREAL]

Please help!

[MineMaarten]

There's no event for that. However you can poll if the player has a certain helmet every tick. when you have the player you can do EntityPlayer#getCurrentArmor(3) to get the currently worn helmet. To do things every tick implement ITickHandler, listen for Render ticks, and don't forget to register it. Now you can draw 2D objects every time you tick and have a certain helmet on.

[MOMOTHEREAL]

But what is the Tick event?

[MineMaarten]

Here's your answer:

http://www.minecraftforge.net/forum/index.php/topic,13504.msg69629.html#msg69629

You add checks in there so you only render stuff when the player has a certain helmet on. 

 

If you really want to do it clean and don't want to use too much computing resources of the rendering you can also listen for player ticks and only check in there if the helmet's on. However I don't think checking for a inventory item is that resource intensive.

[MOMOTHEREAL]

How can I listen to Player ticks? :3 Sorry if I seem noob, I am kinda new to Forge.

[MineMaarten]

That wasn't that necessary for now, I only mentioned it for completeness. But if you want to listen for Player ticks as well you can do this in your implementation of ITickHandler:

 @Override
    public EnumSet<TickType> ticks(){
        return EnumSet.of(TickType.RENDER, TickType.PLAYER);
    }

Because you only register it for the client you'll only get client sided player ticks (which is great).

[MOMOTHEREAL]

Thanks a lot for your patience.

I have this code now in my TickHandler class:

@SideOnly(Side.CLIENT)
public class TickHandler implements ITickHandler{

@Override
public void tickStart(EnumSet<TickType> type, Object... tickData) {

}

@Override
public void tickEnd(EnumSet<TickType> type, Object... tickData) {

	 if(type.contains(TickType.PLAYER)) {
		 if (Variables.status == 0){
			 FMLClientHandler.instance().getClient().fontRenderer.drawStringWithShadow("POTATO", 2, 2, 16777215);
             Variables.status = 1;
		 }
             
	 }
}

@Override
public EnumSet<TickType> ticks() {

	return EnumSet.of(TickType.PLAYER);
}

@Override
public String getLabel() {
	// TODO Auto-generated method stub
	return null;
}

}

 

I used the String POTATO as a test. When I join, I see the string, but it disappears on the next tick. How to let it stay there?

Also, what method do you suggest for detecting the Helmet. Creating a Minecraft instance?

[MineMaarten]

You're rendering things. You need to do this every render tick. Thinking about this I can see two things:

1. You're listening for player ticks instead of render ticks. These are only ticked 20 times a second instead of FPS times (>20 times usually).

2. You're only calling the render method once. You need to draw POTATO every render tick. So no need for a variable to keep up if you already have rendered.

 

Also, what method do you suggest for detecting the Helmet. Creating a Minecraft instance?

Not creating a Minecraft instance! Getting the Minecraft instance (that's probably what you meant). This is only possible because you're working on the client side off course. So to get the player you can do FMLClientHandler.instance().getClient().thePlayer and go on from there to retrieve its helmet stack.

[yomy]

		 if (Variables.status == 0){
			 FMLClientHandler.instance().getClient().fontRenderer.drawStringWithShadow("POTATO", 2, 2, 16777215);
                         Variables.status = 1;
		 }

 

You are setting status to 1 after first display, so it does not pass the IF clause next time.

[MOMOTHEREAL]

New code (tickEnd):

public void tickEnd(EnumSet<TickType> type, Object... tickData) {

	 if(type.contains(TickType.RENDER)) {

		 if (Variables.status == 0){
			 FMLClientHandler.instance().getClient().fontRenderer.drawStringWithShadow("POTATO", 2, 2, 16777215);
             

		 }
             
	 }
}

Now it also displays on the Main Menu!  How to check if it is ingame?

[MineMaarten]

You'll automatically solve this when you check for the player wearing the helmet, because there's only a player object when you're in the world. So when player != null results in true you're in the world. Check out https://github.com/MineMaarten/Worms-Mod/blob/master/src/wormsmod/client/render/ProjectileChargeRenderer.java for an example . Minecraft#inGameHasFocus() returns true when you're not in the pause screen or other gui which is also a helpful method.

[MOMOTHEREAL]

The tickEnd:

@Override
public void tickEnd(EnumSet<TickType> type, Object... tickData) {

	 if(type.contains(TickType.RENDER)) {
		 if (FMLClientHandler.instance().getClient().thePlayer != null){

			 if (FMLClientHandler.instance().getClient().thePlayer.getCurrentArmor(0)==GoogleGlassesMod.GoogleGlassStack){
				 FMLClientHandler.instance().getClient().fontRenderer.drawStringWithShadow("POTATO", 2, 2, 16777215);
			 }

		 }

             
	 }
}

And the GoogleGlassStack:

ublic static ItemStack GoogleGlassStack = new ItemStack(GoogleGlassHelmet);

I think I am doing it wrong at the GoogleGlassStack. Help?

[MineMaarten]

Two things:

1. EntityPlayer#getCurrentArmor(0) returns the boots armor slot. You need EntityPlayer#getCurrentArmor(3).

2. Basic Java . With '==' you're checking if the checked objects are the same. This never is the case. You need to do:

ItemStack helmetStack = FMLClientHandler.instance().getClient().thePlayer.getCurrentArmor(3); //just a new variable because the if statement is getting long otherwise
if(helmetStack != null && helmetStack.itemID == GoogleGlassesMod.GoogleGlassStack.itemID){
    //render
}

[MOMOTHEREAL]

OMG OMG THANK YOU!!!!

Final code (working):

@Override
public void tickEnd(EnumSet<TickType> type, Object... tickData) {

	 if(type.contains(TickType.RENDER)) {
		 if (FMLClientHandler.instance().getClient().thePlayer != null){
			 ItemStack helmetStack = FMLClientHandler.instance().getClient().thePlayer.getCurrentArmor(3);
			 if(helmetStack != null && helmetStack.itemID == GoogleGlassesMod.GoogleGlassHelmet.itemID){
				 FMLClientHandler.instance().getClient().fontRenderer.drawStringWithShadow("POTATO", 2, 2, 16777215); 
			 }




		 }




             
	 }
}

[GotoLink]

Guys...

Item#renderHelmetOverlay(ItemStack stack, EntityPlayer player, ScaledResolution resolution, float partialTicks, boolean hasScreen, int mouseX, int mouseY)

 

[MineMaarten]

Lol! I was reinventing the wheel apparently...

[Draco18s]

Lol! I was reinventing the wheel apparently...

 

None the less, it was a valuable thing to do (in case he wants to do other kinds of gui effects!)