Hi, I'm trying to make a custom overlay when the player has a potion effect, like in Nausea or the pumpkin. I did some research and I need the RenderGameOverlayEvent. I've declared it but It doesn't work. Maybe i have to declare it in some other place? I actually have it on event/ModEventBus

 

@Mod.EventBusSubscriber(modid = example.MOD_ID, bus = Mod.EventBusSubscriber.Bus.MOD)

public class ModEventBusEvents {
    Minecraft mc = Minecraft.getInstance();
    private static final ResourceLocation IMG_LOCATION = new ResourceLocation("textures/scream/glowing.png");
    protected int screenWidth;
    protected int screenHeight;

    @SubscribeEvent
    public void HUGGYSCREAMER(RenderGameOverlayEvent event) {

        Player player = Minecraft.getInstance().player;
        //Options settings = Minecraft.getInstance().options;
        this.screenWidth = this.mc.getWindow().getGuiScaledWidth();
        this.screenHeight = this.mc.getWindow().getGuiScaledHeight();
        assert player != null;
        if (player.hasEffect(MobEffects.GLOWING)) {

            RenderSystem.disableDepthTest();
            RenderSystem.depthMask(false);
            RenderSystem.enableBlend();
            RenderSystem.blendFunc(770, 771);
            Minecraft.getInstance().getTextureManager().bindForSetup(IMG_LOCATION);
            GuiComponent.blit(event.getMatrixStack(), 0, 0, 0, 0,screenWidth ,screenHeight, 480, 270);
            RenderSystem.depthMask(true);
            RenderSystem.enableDepthTest();
         
        }
    }
    }

 

RenderGameOverlayEvent is a runtime event not a mod specific configuration event.

So you need Bus.FORGE

The easy way to check which bus you need is whether the event implements IModBusEvent

 

It is also a client side event (it is graphics stuff), so you also need 

value = Dist.CLIENT

otherwise your mod will likely crash when loaded on a server.

Edited July 29, 20223 yr by warjort

You should use a IIngameOverlay, register it in FMLClientSetupEvent with one of the register methods in OverlayRegistry.

You can take a look at ForgeIngameGui for the vanilla Overlays.

I used the forge bus and now it works, thanks a lot.
If somebody needs it:
 

@Mod.EventBusSubscriber(modid = MYMOD.MOD_ID, bus = Mod.EventBusSubscriber.Bus.FORGE, value = Dist.CLIENT)

public class CustomEvents implements IModBusEvent {

    static Minecraft mc = Minecraft.getInstance();
    private static final ResourceLocation IMG_LOCATION = new ResourceLocation(MYMOD.MOD_ID,"textures/scream/img.png");
    protected static int screenWidth;
    protected static int screenHeight;

    @SubscribeEvent
    public static void RenderEvent(RenderGameOverlayEvent.Post event) {

        Player player = Minecraft.getInstance().player;
        //Options settings = Minecraft.getInstance().options;
        screenWidth = mc.getWindow().getGuiScaledWidth();
        screenHeight = mc.getWindow().getGuiScaledHeight();
        assert player != null;
        if (player.hasEffect(MobEffects.GLOWING)) {

            RenderSystem.disableDepthTest();
            RenderSystem.depthMask(false);
            RenderSystem.defaultBlendFunc();
            RenderSystem.setShader(GameRenderer::getPositionTexShader);
            RenderSystem.setShaderColor(1.0F, 1.0F, 1.0F, 1F);
            RenderSystem.setShaderTexture(0, IMG_LOCATION);
            Tesselator tesselator = Tesselator.getInstance();
            BufferBuilder bufferbuilder = tesselator.getBuilder();
            bufferbuilder.begin(VertexFormat.Mode.QUADS, DefaultVertexFormat.POSITION_TEX);
            bufferbuilder.vertex(0.0D, screenHeight, -90.0D).uv(0.0F, 1.0F).endVertex();
            bufferbuilder.vertex(screenWidth, (double) screenHeight, -90.0D).uv(1.0F, 1.0F).endVertex();
            bufferbuilder.vertex(screenWidth, 0.0D, -90.0D).uv(1.0F, 0.0F).endVertex();
            bufferbuilder.vertex(0.0D, 0.0D, -90.0D).uv(0.0F, 0.0F).endVertex();
            tesselator.end();
            RenderSystem.depthMask(true);
            RenderSystem.enableDepthTest();
            RenderSystem.setShaderColor(0.0F, 0.0F, 1.0F, 1.0F);

        }
    }}

 

On 7/31/2022 at 5:01 AM, diesieben07 said:

Please do this.

This makes no sense.

Sorry I'm kinda new on this. I've deleted the implementation. Also I added this:

private void clientSetup(final FMLClientSetupEvent event) {

        OverlayRegistry.registerOverlayTop("custom_effect", (gui, poseStack, partialTick, screenWidth, screenHeight) -> {
            gui.setupOverlayRenderState(true, false);
        });

Not sure if it's fine, but it works. Now I have to discover how to show an animation using this.

Inside the IIngameOverlay (which you implemented in a lambda expression) you need to render the Overlay.
Basically you can do the same things as you done it in RenderGameOverlayEvent.Post.