red dot.java

   WorldRenderEvents.AFTER_ENTITIES.register(context -> {
            MatrixStack matrices = context.matrixStack();
            matrices.push();

            // Use the correct render layer for drawing lines (does not require UVs)
            VertexConsumer buffer = context.consumers().getBuffer(RenderLayer.getLines());

            // Get the player's current position
            PlayerEntity player = MinecraftClient.getInstance().player;
            Vec3d playerPos = player.getPos();

            // Place the box near the player (slightly above for visibility)
            double boxX = playerPos.getX();
            double boxY = playerPos.getY() + 2;
            double boxZ = playerPos.getZ();
            float size = 1.0f; // Set a reasonable size for the box

            // Draw the box at the new position
            WorldRenderer.drawBox(
                    matrices, buffer,
                    boxX - size / 2, boxY - size / 2, boxZ - size / 2,  // Min coordinates
                    boxX + size / 2, boxY + size / 2, boxZ + size / 2,  // Max coordinates
                    1.0f, 0.0f, 0.0f, 1.0f // Red color with full opacity
            );

            matrices.pop();
        });