CleanerMenu.java

import [...]

public class CleanerMenu extends AbstractContainerMenu {


    private Inventory playerInv;

    private CleanerBlockEntity instance;

    public boolean isInstanceNull(){
        return instance == null;
    }


    public CleanerMenu(int pContainerId, Inventory playerInv, BlockEntity temp) {
        super(modBlockEntities.modScreenTypes.CleanerScreenType.get(), pContainerId);
        if(temp instanceof CleanerBlockEntity instance) {

            for(int i = 0; i < 3; ++i) {
                for(int j = 0; j < 9; ++j) {
                    this.addSlot(new Slot(playerInv, j + i * 9 + 9, 8 + j * 18, 84 + i * 18));
                }
            }

            for(int k = 0; k < 9; ++k) {
                this.addSlot(new Slot(playerInv, k, 8 + k * 18, 142));
            }

            this.addSlot(new Slot(instance, 0, 56, 17));
            this.addSlot(new Slot(instance, 1, 56, 53));

            this.addSlot(new Slot(instance, 2, 124, 24));
            this.addSlot(new Slot(instance, 3, 124+9, 24));
            this.addSlot(new Slot(instance, 4, 124+18, 24));
            this.addSlot(new Slot(instance, 5, 124, 24+9));
            this.addSlot(new Slot(instance, 6, 124+9, 24+9));
            this.addSlot(new Slot(instance, 7, 124+18, 24+9));

            this.instance = instance;
            this.playerInv = playerInv;
        }

    }

    public int getAmountOfFluid(){
        if(this.instance != null)
            return this.instance.fluid.getAmount();
        return 0;
    }
    public boolean isCleaning(){
        if(this.instance != null)
            return this.instance.isCleaning();
        return false;
    }

    public int getProgress(){
        if(this.instance != null)
            return this.instance.getProgress()/22/*or 24 idk which but if it doesn't work that's why lol*/;
        return 0;
    }

    public CleanerMenu(int id, Inventory inventory) {


        super(modBlockEntities.modScreenTypes.CleanerScreenType.get(), id);
        for(int i = 0; i < 3; ++i) {
            for(int j = 0; j < 9; ++j) {
                this.addSlot(new Slot(inventory, j + i * 9 + 9, 8 + j * 18, 84 + i * 18));
            }
        }

        for(int k = 0; k < 9; ++k) {
            this.addSlot(new Slot(inventory, k, 8 + k * 18, 142));
        }


        this.playerInv = inventory;
    }


    @Override
    public boolean stillValid(Player pPlayer) {
        return true;
    }

    public void setInstance(CleanerBlockEntity entity){
        this.instance = entity;
    }
}

CleanerScreen.java

import [...]

public class CleanerScreen extends AbstractContainerScreen<CleanerMenu> {

    private static final ResourceLocation TEXTURE = resource("textures/gui/cleaning_station.png");
    private static final int progressBarXOffset = 176;
    private static final int progressBarYOffset = 14;

    private static final int fluidBarXOffset = 177;
    private static final int fluidBarYOffset = 81;//move this DOWN




    public CleanerScreen(CleanerMenu pMenu, Inventory pPlayerInventory, Component pTitle) {
        super(pMenu, pPlayerInventory, pTitle);
        this.itemRenderer = Minecraft.getInstance().getItemRenderer();

//        BlockEntity tempOwner = pPlayerInventory.player.getCommandSenderWorld().getBlockEntity( pPlayerInventory.player.getCommandSenderWorld().clip(new ClipContext( pPlayerInventory.player.getLookAngle(), pPlayerInventory.player.getLookAngle().add(5, 5, 5), ClipContext.Block.COLLIDER, ClipContext.Fluid.NONE, pPlayerInventory.player)).getBlockPos());
//        pMenu.setInstance(tempOwner instanceof CleanerBlockEntity ? (CleanerBlockEntity) tempOwner : null);
    }

    public CleanerScreen(CleanerMenu menu, Inventory inv, Component title, BlockEntity entity){
        super(menu, inv, title);
        this.itemRenderer = Minecraft.getInstance().getItemRenderer();
        this.minecraft = Minecraft.getInstance();
        this.itemRenderer = minecraft.getItemRenderer();
        this.font = minecraft.font;

        if(entity instanceof CleanerBlockEntity e)
            menu.setInstance(e);

    }




    @Override
    protected void renderBg(PoseStack pPoseStack, float pPartialTick, int pMouseX, int pMouseY) {
        RenderSystem.setShader(GameRenderer::getPositionTexShader);
        RenderSystem.setShaderColor(1.0F, 1.0F, 1.0F, 1.0F);
        RenderSystem.setShaderTexture(0, TEXTURE);
        int i = this.leftPos;
        int j = this.topPos;
        this.blit(pPoseStack, i, j, 0, 0, 175, 165);
        boolean isInstanceNull = menu.isInstanceNull();

        //render progress bar
        if(!isInstanceNull && this.menu.isCleaning()){
            int progress = menu.getProgress();
            this.blit(pPoseStack, 78, 34, progressBarXOffset, progressBarYOffset, progress, 16/*or 17 if it doesn't work thats why*/);
        }

        //render fluid amount
        if(!isInstanceNull && this.menu.getAmountOfFluid() > 0){
            int fluidHeight = this.menu.getAmountOfFluid()/49;
            this.blit(pPoseStack, 47, 68, fluidBarXOffset, fluidBarYOffset, 4, fluidHeight);
        }

    }
}