[1.7.10] [SOLVED] Having trouble with glTranslateF

[ADonkeyTaboggan]

So I'm drawing images to the hud using RenderGameOverlay. I want to shift around the normal gui to get better placement with my new additions, thus I am attempting to translate the vanilla gui based on what Element type the event is on.

 

Problem is I can't seem to change the position of the experience bar without changing every element even though I'm checking if the ElementType is Experience. I tried to use push and pop matrix but that didn't seem to help things.

 

Code:

public void renderGameOverlay(RenderGameOverlayEvent event) {
        if(event.type == ElementType.EXPERIENCE) {
            GL11.glTranslatef(0.0F, (float)(-7), 0.0F);
        } else {
            GL11.glTranslatef(0.0F, (float)(0), 0.0F);
        }
}

 

Result:

http://i.imgur.com/MyVDs66.png

 

I'm probably not quite understanding something simple tbh =p

 

[HappyKiller1O1]

It seems like it is moving everything BUT the experience bar. Try this:

public void renderGameOverlay(RenderGameOverlayEvent event) {
        if(event.type == ElementType.EXPERIENCE) {
            GL11.glTranslatef(0.0F, (float)(0), 0.0F);
        } else {
            GL11.glTranslatef(0.0F, (float)(-7), 0.0F);
        }
}

[HappyKiller1O1]

Oh wait, I might be getting this wrong. The problem is that the experience bar and the overlay when in a gui is moving? Or that everything but the experience bar is moving?

[ADonkeyTaboggan]

So first off I should of clarified that my custom gui elements are not there so I don't add more confusion.

 

The Experience bar is doing exactly as expected, and so is the rest of the HUD elements (Not hot bar is directly on the bottom of my game window) but the problem is it seems ALL other gui elements are also shifted upwards. I demonstrate that in the image from the fact I am apparently hovering over a slot when the gui is being shown above it.

 

Edit: derp my mouse isnt in the screenshot... well take my word for it I guess

 

[HappyKiller1O1]

Hm alright, this could be because you're not pushing and popping the matrix. Although, I am not sure considering I have only worked with OpenGl a handful of times. Try this:

public void renderGameOverlay(RenderGameOverlayEvent event) {
        if(event.type == ElementType.EXPERIENCE) {
            GL11.glPushMatrix();
                   GL11.glTranslatef(0.0F, (float)(-7), 0.0F);
            GL11.glPopMatrix();
        } else {
            //GL11.glTranslatef(0.0F, (float)(0), 0.0F); <- There is no need to reset this if you're just editing the Experience bar 
        }
}

 

Just trying to give you my knowledge to help.

[ADonkeyTaboggan]

Now you see this is why I couldn't wrap my head around this issue.

 

The result of your code has the experience bar stay in it's default position. I did try doing exactly what you suggested before, and I got the same result.

 

I guess it's resetting the position when we popMatrix?

 

 

[HappyKiller1O1]

Well, I know normally with OpenGL, if you don't push and pop it the matrix, it will edit other things too. I just tried doing some debugging, and it seems when I check for the HEALTH enum, it only moves the experience bar, like for some reason it's incorrect? Try messaging Erino if he doesn't reply to this post. He is very experienced in GL11, and could help you far more than I could.

 

[Draco18s]

The reason your code doesn't do anything, HappyKiller, is because you push the matrix, create an offset, then pop the matrix all before the event notification has finished executing, so when the actual render call is made, there are no changes.

[ADonkeyTaboggan]

Thanks @Draco18s & @diesieben07!

 

The fixed my issues. I didn't even know there were pre and post events, so I'm sure that will also help me in the future.

 

However, that's a sign I need to do more reading! =p