minecraft-kajetans-mod/src/main/java/me/km/networking/CustomInventoryScreen.java

package me.km.networking;

import com.mojang.blaze3d.matrix.MatrixStack;
import com.mojang.blaze3d.systems.RenderSystem;
import me.km.KajetansMod;
import me.km.inventory.CustomContainer;
import me.km.inventory.ModInventory;
import net.minecraft.client.gui.screen.inventory.ContainerScreen;
import net.minecraft.entity.player.PlayerInventory;
import net.minecraft.util.ResourceLocation;
import net.minecraft.util.text.ITextComponent;
import net.minecraftforge.api.distmarker.Dist;
import net.minecraftforge.api.distmarker.OnlyIn;

@OnlyIn(Dist.CLIENT)
public class CustomInventoryScreen extends ContainerScreen<CustomContainer> {
    private static final ResourceLocation CHEST_GUI_TEXTURE =
            new ResourceLocation("textures/gui/container/generic_54.png");
    private static final ResourceLocation EMPTY_TILE =
            new ResourceLocation(KajetansMod.MODID, "textures/gui/container/empty_tile.png");

    private final int inventoryRows;

    public CustomInventoryScreen(CustomContainer cc, PlayerInventory pInv, ITextComponent title) {
        super(cc, pInv, title);
        passEvents = false;
        inventoryRows = cc.getInventoryBase().getRows();
        imageHeight = 114 + inventoryRows * 18;
    }

    @Override
    public void render(MatrixStack matrixStack, int mouseX, int mouseY, float partialTicks) {
        this.renderBackground(matrixStack);
        super.render(matrixStack, mouseX, mouseY, partialTicks);
        this.renderTooltip(matrixStack, mouseX, mouseY);
    }

    @Override
    protected void renderLabels(MatrixStack matrixStack, int x, int y) {
        this.font.draw(matrixStack, title.getString(), 8.0f, 6.0f, 4210752);
        this.font.draw(matrixStack, inventory.getDisplayName().getString(), 8.0f, imageHeight - 94,
                4210752);
    }

    @SuppressWarnings("deprecation")
    @Override
    protected void renderBg(MatrixStack matrixStack, float partialTicks, int ix, int iy) {
        RenderSystem.color4f(1.0F, 1.0F, 1.0F, 1.0F);
        this.minecraft.getTextureManager().bind(CHEST_GUI_TEXTURE);
        int i = (width - imageWidth) / 2;
        int j = (height - imageHeight) / 2;
        blit(matrixStack, i, j, 0, 0, imageWidth, inventoryRows * 18 + 17);
        blit(matrixStack, i, j + inventoryRows * 18 + 17, 0, 126, imageWidth, 96);

        i += 7;
        j += 17;
        minecraft.getTextureManager().bind(EMPTY_TILE);
        ModInventory base = this.getMenu().getInventoryBase();
        for(int x = 0; x < 9; x++) {
            for(int y = 0; y < inventoryRows; y++) {
                if(base.shouldRenderOverlay(x, y)) {
                    blit(matrixStack, i + 18 * x, j + 18 * y, 0, 0, 18, 18, 64, 64);
                } else if(base.shouldRenderDarker(x, y)) {
                    blit(matrixStack, i + 18 * x, j + 18 * y, 18, 0, 18, 18, 64, 64);
                }
            }
        }
    }
}