ActuallyAdditions/src/main/java/de/ellpeck/actuallyadditions/mod/inventory/ContainerDrill.java

/*
 * This file ("ContainerDrill.java") is part of the Actually Additions mod for Minecraft.
 * It is created and owned by Ellpeck and distributed
 * under the Actually Additions License to be found at
 * http://ellpeck.de/actaddlicense
 * View the source code at https://github.com/Ellpeck/ActuallyAdditions
 *
 * © 2015-2017 Ellpeck
 */

package de.ellpeck.actuallyadditions.mod.inventory;

import de.ellpeck.actuallyadditions.mod.inventory.slot.SlotImmovable;
import de.ellpeck.actuallyadditions.mod.inventory.slot.SlotItemHandlerUnconditioned;
import de.ellpeck.actuallyadditions.mod.items.ItemDrill;
import de.ellpeck.actuallyadditions.mod.items.ItemDrillUpgrade;
import de.ellpeck.actuallyadditions.mod.util.ItemStackHandlerCustom;
import de.ellpeck.actuallyadditions.mod.util.StackUtil;
import net.minecraft.entity.player.EntityPlayer;
import net.minecraft.entity.player.InventoryPlayer;
import net.minecraft.inventory.ClickType;
import net.minecraft.inventory.Container;
import net.minecraft.inventory.Slot;
import net.minecraft.item.ItemStack;


public class ContainerDrill extends Container{

    public static final int SLOT_AMOUNT = 5;

    private final ItemStackHandlerCustom drillInventory = new ItemStackHandlerCustom(SLOT_AMOUNT);
    private final InventoryPlayer inventory;

    public ContainerDrill(InventoryPlayer inventory){
        this.inventory = inventory;

        for(int i = 0; i < SLOT_AMOUNT; i++){
            this.addSlotToContainer(new SlotItemHandlerUnconditioned(this.drillInventory, i, 44+i*18, 19){
                @Override
                public boolean isItemValid(ItemStack stack){
                    return stack.getItem() instanceof ItemDrillUpgrade;
                }
            });
        }

        for(int i = 0; i < 3; i++){
            for(int j = 0; j < 9; j++){
                this.addSlotToContainer(new Slot(inventory, j+i*9+9, 8+j*18, 58+i*18));
            }
        }
        for(int i = 0; i < 9; i++){
            if(i == inventory.currentItem){
                this.addSlotToContainer(new SlotImmovable(inventory, i, 8+i*18, 116));
            }
            else{
                this.addSlotToContainer(new Slot(inventory, i, 8+i*18, 116));
            }
        }

        ItemStack stack = inventory.getCurrentItem();
        if(StackUtil.isValid(stack) && stack.getItem() instanceof ItemDrill){
            ItemDrill.loadSlotsFromNBT(this.drillInventory, inventory.getCurrentItem());
        }
    }

    @Override
    public ItemStack transferStackInSlot(EntityPlayer player, int slot){
        int inventoryStart = 5;
        int inventoryEnd = inventoryStart+26;
        int hotbarStart = inventoryEnd+1;
        int hotbarEnd = hotbarStart+8;

        Slot theSlot = this.inventorySlots.get(slot);

        if(theSlot != null && theSlot.getHasStack()){
            ItemStack newStack = theSlot.getStack();
            ItemStack currentStack = newStack.copy();

            //Other Slots in Inventory excluded
            if(slot >= inventoryStart){
                //Shift from Inventory
                if(newStack.getItem() instanceof ItemDrillUpgrade){
                    if(!this.mergeItemStack(newStack, 0, 5, false)){
                        return StackUtil.getNull();
                    }
                }
                //

                else if(slot >= inventoryStart && slot <= inventoryEnd){
                    if(!this.mergeItemStack(newStack, hotbarStart, hotbarEnd+1, false)){
                        return StackUtil.getNull();
                    }
                }
                else if(slot >= inventoryEnd+1 && slot < hotbarEnd+1 && !this.mergeItemStack(newStack, inventoryStart, inventoryEnd+1, false)){
                    return StackUtil.getNull();
                }
            }
            else if(!this.mergeItemStack(newStack, inventoryStart, hotbarEnd+1, false)){
                return StackUtil.getNull();
            }

            if(!StackUtil.isValid(newStack)){
                theSlot.putStack(StackUtil.getNull());
            }
            else{
                theSlot.onSlotChanged();
            }

            if(StackUtil.getStackSize(newStack) == StackUtil.getStackSize(currentStack)){
                return StackUtil.getNull();
            }
            theSlot.onTake(player, newStack);

            return currentStack;
        }
        return StackUtil.getNull();
    }

    @Override
    public ItemStack slotClick(int slotId, int dragType, ClickType clickTypeIn, EntityPlayer player){
        if(clickTypeIn == ClickType.SWAP && dragType == this.inventory.currentItem){
            return null;
        }
        else{
            return super.slotClick(slotId, dragType, clickTypeIn, player);
        }
    }

    @Override
    public void onContainerClosed(EntityPlayer player){
        ItemStack stack = this.inventory.getCurrentItem();
        if(StackUtil.isValid(stack) && stack.getItem() instanceof ItemDrill){
            ItemDrill.writeSlotsToNBT(this.drillInventory, this.inventory.getCurrentItem());
        }
        super.onContainerClosed(player);
    }

    @Override
    public boolean canInteractWith(EntityPlayer player){
        return true;
    }
}