4jcraft/Minecraft.Client/Platform/Common/UI/IUIScene_HopperMenu.cpp

#include "../../stdafx.h"
#include "IUIScene_HopperMenu.h"
#include "../../../../Minecraft.World/Headers/net.minecraft.world.inventory.h"

IUIScene_AbstractContainerMenu::ESceneSection
IUIScene_HopperMenu::GetSectionAndSlotInDirection(ESceneSection eSection,
                                                  ETapState eTapDirection,
                                                  int* piTargetX,
                                                  int* piTargetY) {
    ESceneSection newSection = eSection;

    int xOffset = 0;

    // Find the new section if there is one
    switch (eSection) {
        case eSectionHopperContents:
            if (eTapDirection == eTapStateDown) {
                newSection = eSectionHopperInventory;
                xOffset = -2;
            } else if (eTapDirection == eTapStateUp) {
                xOffset = -2;
                newSection = eSectionHopperUsing;
            }
            break;
        case eSectionHopperInventory:
            if (eTapDirection == eTapStateDown) {
                newSection = eSectionHopperUsing;
            } else if (eTapDirection == eTapStateUp) {
                xOffset = 2;
                newSection = eSectionHopperContents;
            }
            break;
        case eSectionHopperUsing:
            if (eTapDirection == eTapStateDown) {
                xOffset = 2;
                newSection = eSectionHopperContents;
            } else if (eTapDirection == eTapStateUp) {
                newSection = eSectionHopperInventory;
            }
            break;
        default:
            assert(false);
            break;
    }

    updateSlotPosition(eSection, newSection, eTapDirection, piTargetX,
                       piTargetY, xOffset);

    return newSection;
}

int IUIScene_HopperMenu::getSectionStartOffset(ESceneSection eSection) {
    int offset = 0;
    switch (eSection) {
        case eSectionHopperContents:
            offset = HopperMenu::CONTENTS_SLOT_START;
            break;
        case eSectionHopperInventory:
            offset = HopperMenu::INV_SLOT_START;
            break;
        case eSectionHopperUsing:
            offset = HopperMenu::USE_ROW_SLOT_START;
            break;
        default:
            assert(false);
            break;
    }
    return offset;
}