Hi I would like to know how could I render an overlay (like pumpkin) once player have a certain armor piece on him.

Subscribe to the RenderGameOverlayEvent and check if the player is wearing the armor piece you want. The IngameGui class is a good source of informations, there you can find how vanilla renders the pumpkin overlay

OK so using RenderGameOverlayEvent I managed to check when the player have a certain item on the helmet slot but fore some reason the overlay itself don't work.

 

Here is the code:

public class MODIngameGui extends IngameGui
{

    protected static final ResourceLocation GASMASK_BLUR_TEX_PATH = new ResourceLocation("mod:textures/guis/gasmask.png");

    protected void renderGasmaskOverlay() {
        RenderSystem.disableDepthTest();
        RenderSystem.depthMask(false);
        RenderSystem.defaultBlendFunc();
        RenderSystem.color4f(1.0F, 1.0F, 1.0F, 1.0F);
        RenderSystem.disableAlphaTest();
        this.mc.getTextureManager().bindTexture(GASMASK_BLUR_TEX_PATH);
        Tessellator tessellator = Tessellator.getInstance();
        BufferBuilder bufferbuilder = tessellator.getBuffer();
        bufferbuilder.begin(7, DefaultVertexFormats.POSITION_TEX);
        bufferbuilder.pos(0.0D, (double)this.scaledHeight, -90.0D).tex(0.0F, 1.0F).endVertex();
        bufferbuilder.pos((double)this.scaledWidth, (double)this.scaledHeight, -90.0D).tex(1.0F, 1.0F).endVertex();
        bufferbuilder.pos((double)this.scaledWidth, 0.0D, -90.0D).tex(1.0F, 0.0F).endVertex();
        bufferbuilder.pos(0.0D, 0.0D, -90.0D).tex(0.0F, 0.0F).endVertex();
        tessellator.draw();
        RenderSystem.depthMask(true);
        RenderSystem.enableDepthTest();
        RenderSystem.enableAlphaTest();
        RenderSystem.color4f(1.0F, 1.0F, 1.0F, 1.0F);
    }

    public MODIngameGui(Minecraft mcIn, MatrixStack matrixStack)
    {
        super(mcIn);
        ItemStack itemstack = this.mc.player.inventory.armorItemInSlot(3);
        if (this.mc.gameSettings.getPointOfView().func_243192_a() && itemstack.getItem() == items_MOD.GAS_MASK.get()) {
            this.renderGasmaskOverlay();
            mod.LOGGER.info("test test test");
        }
    }
}

even tried to use, renderPumpkinOverlay but no success

 

the message appear in the console by the way

Edited November 28, 20204 yr by Grandlovania

@Mod.EventBusSubscriber
public class MODClientEvents
{
    @SubscribeEvent
    public static void RenderModOverlay(RenderGameOverlayEvent.Post event)
    {
        new MODIngameGui(Minecraft.getInstance(), event.getMatrixStack());
    }
}

 

3 hours ago, Grandlovania said:

Hi I would like to know how could I render an overlay (like pumpkin) once player have a certain armor piece on him.

If it is your own custom item, you could use the renderHelmetOverlay() method instead of an event.