[1.7.10] How to render a gui over another gui?

[HappyKiller1O1]

The title says it all. I want to render a gui over another gui that is already displayed. I went to the Minecraft.displayGuiScreen to see if there is a work around but it seems to always close the gui if another is going to be displayed. Any way around this?

[Enginecrafter]

If you are opening GUIs using Minecraft.getMinecraft().displayGuiScreen(GuiScreen) your mod becomes multiplayer inpompatible. If you try to play multiplayer with that, it always opens the gui to server's owner. For example, server owner has his server and you are it's admin and you installed your mod to this server. And when you open the gui, the gui opens to admin. I think you don't want this.

Use:

player.openGui(ModInstance, GuiID, world, x, y, z);

And I recommend to watch diesieben07's tutorial about simple packet handling. It's very usefull if you are changing something like tile entity that is on server side.

Tutorial link http://www.minecraftforge.net/forum/index.php/topic,20135.0.html

[jabelar]

You can use events for this.  You can intercept the opening, init, button behavior and drawing of any GuiScreen with:

GuiOpenEvent

GuiScreenEvent.ActionPerformedEvent

GuiScreenEvent.DrawScreenEvent

GuiScreenEvent.InitGuiEvent

[HappyKiller1O1]

I didn't know using displayGuiScreen did that, but thanks. I already know how to make a gui handler, just thought that way was easier. And, how would I use those events to display a Gui over another? Maybe just a simple example would be nice.

[Ernio]

Main idea is:

You save fields inside your own storage (event class for example).

Initialize them inside GuiScreenEvent.InitGuiEvent by checking if event.gui is instance of gui desired.

And then draw those elements in GuiScreenEvent.DrawScreenEvent, do button actions in GuiScreenEvent.ActionPerformedEvent.

 

 

[HappyKiller1O1]

That is so much work. ;-; I think I'll just have to deal with not having it drawn over. I have way too many gui's to display over.

[HappyKiller1O1]

So, I am trying to do what you told me Ernio but, this happens. ;-;

 

http://i.imgur.com/Lqfv5jY.png

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

 

Here's where I render it in my EventForgeClient Class:

 

@SubscribeEvent
public void onGuiScreenDrawn(DrawScreenEvent event) {
	int width = event.gui.width;
	int height = event.gui.height;

	int xSize = 80;
	int ySize = 40;

	if(event.gui instanceof GuiShopBlock) {
		if(GuiShopBlock.getDisplayE()) {
			this.drawPurchaseOverlay("Emerald", Items.emerald, 500, width, height, xSize, ySize, event.gui.mc, event.gui);
			System.out.println("Emerald is True");
		}
	}
}

private void drawPurchaseOverlay(String title, Item itemForRender, int price, int width, int height, int xSize, int ySize, Minecraft mc, GuiScreen gui) {
	GL11.glPushMatrix();

	GL11.glColor4f(1.0F, 1.0F, 1.0F, 1.0F);

        int k = (width - xSize) / 2;
        int l = (height - ySize) / 2;

	mc.getTextureManager().bindTexture(crewShopPurchase);

	gui.drawTexturedModalRect(k, l, 0, 0, width, height);

	gui.drawCenteredString(mc.fontRenderer, "Purchase: " + title + "'s", k, l, 0xFFFFFF);

	RenderHelper.enableGUIStandardItemLighting();
        GL11.glDisable(GL11.GL_LIGHTING);
        GL11.glEnable(GL12.GL_RESCALE_NORMAL);
        GL11.glEnable(GL11.GL_COLOR_MATERIAL);
        GL11.glEnable(GL11.GL_LIGHTING);
        
        //GL11.glScalef(2.00F, 2.00F, 2.00F);
        
        renderedItem.renderItemAndEffectIntoGUI(mc.fontRenderer, mc.getTextureManager(), new ItemStack(itemForRender), k + 25, l + 25);
        GL11.glDisable(GL11.GL_LIGHTING);
        GL11.glDepthMask(true);
        GL11.glEnable(GL11.GL_DEPTH_TEST);
        
        GL11.glPopMatrix();
}

[HappyKiller1O1]

If you're wondering, when I click the Emerald is when it attempts to draw the texture overlay.

[Abastro]

Since the Gui is yours, You can just draw the overlay Gui after the main Gui is drawn, in the method 'drawScreen'.

[HappyKiller1O1]

I'm stupid huh? I'll go do that now

[HappyKiller1O1]

That works but, it's still doing what was shown above. Am I doing something wrong with OpenGL?

 

public class GuiShopBlock extends GuiScreen {

public static final ResourceLocation texture = new ResourceLocation(MR.TNAME + "textures/gui/crew_shop.png");
private static final ResourceLocation crewShopPurchase = new ResourceLocation(MR.TNAME + "textures/gui/crew_shop_purchase.png");

private int xSize;
private int ySize;

RenderItem renderedItem;

private static boolean displayE;

public GuiShopBlock() {
	this.xSize = 176;
	this.ySize = 166;

	renderedItem = new RenderItem();

	displayE = false;
}

public void initGui() {
        int k = (this.width - this.xSize) / 2;
        int l = (this.height - this.ySize) / 2;
        
	buttonList.clear();
	//buttonList.add(new GuiSlider(0, k + 25, l + 25, 30, 20, "", "", 1, 64, 1, false, true));
}

public void actionPerformed(GuiButton button) {

}

public void drawScreen(int x, int y, float f) { //Add buttons for shop
	GL11.glColor4f(1.0F, 1.0F, 1.0F, 1.0F);

        int k = (this.width - this.xSize) / 2;
        int l = (this.height - this.ySize) / 2;

	mc.getTextureManager().bindTexture(texture);

	this.drawTexturedModalRect(k, l, 0, 0, xSize, ySize);

	this.drawString(mc.fontRenderer, "Crew Shop", k + 60, l + 4, 0xFFFFFF);

	this.renderItemOnGui(Items.emerald, 0, 0);
	this.renderItemOnGui(Items.diamond, 100, 0);

	this.drawToolTips(x, y);

	if(this.getDisplayE()) {
		this.drawPurchaseOverlay("Emerald", Items.emerald, 500);
	}

	super.drawScreen(x, y, f);
}

public void drawToolTips(int mouseX, int mouseY) {
    int boxX = (this.width - this.xSize) / 2 + 25;
    int boxY = (this.height - this.ySize) / 2 + 25;

	int defaultX = 16;
	int defaultY = 16;

	if(mouseX > boxX && mouseX < boxX + defaultX && mouseY > boxY && mouseY < boxY + defaultY) {
		List list = new ArrayList();
		list.add("DEAFULT TEXT");
		this.drawHoveringText(list, mouseX, mouseY, fontRendererObj);
		//System.out.println("SHOULD DRAW THE TEXT");
	}
}

public void mouseClicked(int mouseX, int mouseY, int which) {
    int boxX = (this.width - this.xSize) / 2 + 25;
    int boxY = (this.height - this.ySize) / 2 + 25;

	int defaultX = 16;
	int defaultY = 16;

	if(mouseX > boxX && mouseX < boxX + defaultX && mouseY > boxY && mouseY < boxY + defaultY) {
		this.displayE = true;
		//FMLNetworkHandler.openGui(this.mc.thePlayer, CrewMod.instance, GuiId.guiPurchase, this.mc.theWorld, (int)this.mc.thePlayer.posX, (int)this.mc.thePlayer.posY, (int)this.mc.thePlayer.posZ);
		//System.out.println("SHOULD DISPLAY EMERALD SCREEN");
	}

	super.mouseClicked(mouseX, mouseY, which);
}

public void renderItemOnGui(Item item, int mulX, int mulY) {
        int k = (this.width - this.xSize) / 2 + 25;
        int l = (this.height - this.ySize) / 2 + 25;
        
	GL11.glPushMatrix();

	RenderHelper.enableGUIStandardItemLighting();
        GL11.glDisable(GL11.GL_LIGHTING);
        GL11.glEnable(GL12.GL_RESCALE_NORMAL);
        GL11.glEnable(GL11.GL_COLOR_MATERIAL);
        GL11.glEnable(GL11.GL_LIGHTING);
        
        //GL11.glScalef(2.00F, 2.00F, 2.00F);
        
        renderedItem.renderItemAndEffectIntoGUI(mc.fontRenderer, mc.getTextureManager(), new ItemStack(item), k + mulX, l + mulY);
        GL11.glDisable(GL11.GL_LIGHTING);
        GL11.glDepthMask(true);
        GL11.glEnable(GL11.GL_DEPTH_TEST);
        
        GL11.glPopMatrix();
}

private void drawPurchaseOverlay(String title, Item itemForRender, int price) {
	GL11.glPushMatrix();

	GL11.glColor4f(1.0F, 1.0F, 1.0F, 1.0F);

        int k = (this.width - this.xSize) / 2;
        int l = (this.height - this.ySize) / 2;

	mc.getTextureManager().bindTexture(crewShopPurchase);

	this.drawTexturedModalRect(k, l, 0, 0, this.width, this.height);

	this.drawCenteredString(mc.fontRenderer, "Purchase: " + title + "'s", k, l, 0xFFFFFF);

	RenderHelper.enableGUIStandardItemLighting();
        GL11.glDisable(GL11.GL_LIGHTING);
        GL11.glEnable(GL12.GL_RESCALE_NORMAL);
        GL11.glEnable(GL11.GL_COLOR_MATERIAL);
        GL11.glEnable(GL11.GL_LIGHTING);
        
        //GL11.glScalef(2.00F, 2.00F, 2.00F);
        
        renderedItem.renderItemAndEffectIntoGUI(mc.fontRenderer, mc.getTextureManager(), new ItemStack(itemForRender), k + 25, l + 25);
        GL11.glDisable(GL11.GL_LIGHTING);
        GL11.glDepthMask(true);
        GL11.glEnable(GL11.GL_DEPTH_TEST);
        
        GL11.glPopMatrix();
}

public boolean doesGuiPauseGame() {
	return false;
}

public static boolean getDisplayE() {
	return displayE;
}
}

[Abastro]

How does your texture look like? Does it contain 4 images?

[HappyKiller1O1]

No, it doesn't. I fixed it by rendering the items on the gui after I rendered the overlay. But, the items overlap the overlay. How would I render the items behind the overlay?

[Abastro]

You should render the item after the overlay is rendered.. There is no other way for this.

+ It would be your UV problem. Don't use drawTexturedModalRect.

        since it uses fixed u/x rate, it would use wrong UV and might cause problems like yours.

  Instead make your own version for that. There you should set the (u,v) to (0,1),(1,1),(1,0),(0,0).

[HappyKiller1O1]

So, creating my own would render it over the items? I do not see how this would work.

[Abastro]

No, it will solve this problem: http://i.imgur.com/Lqfv5jY.png

+ I said this thing wrong: You should render the item after the overlay is rendered. You should render item before the overlay is rendered.

And, draw the tooltip after everything is rendered.

[HappyKiller1O1]

Well, when I render it after the items are rendered, I get quite a weird lighting glitch and, the items still overlap.

[Abastro]

Well, when I render it after the items are rendered, I get quite a weird lighting glitch and, the items still overlap.

Weird lighting glitch would be from tooltip rendering. As I said, render the Tooltip AFTER everything is rendered.

And item overlapping cannot happen if item is rendered before the overlay is rendered...

So, post your current code.