AdventuresInLestoria/Crawler/MenuItemButton.h

/*
License (OLC-3)
~~~~~~~~~~~~~~~

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*/
#pragma once
#include "Menu.h"
#include "MenuLabel.h"
#include "MenuIconButton.h"
#include "DEFINES.h"
#include "Crawler.h"
#include "Item.h"
#include "safemap.h"
#include "olcPGEX_Graphics2D.h"
#include "drawutil.h"

INCLUDE_game
INCLUDE_ITEM_DATA

class MenuItemButton:public MenuIconButton{
private:
    std::vector<IT>&invRef;
    int inventoryIndex=0;
public:
    int selected=-1; //0-2 representing which loadout slot this item consumes. -1 means not selected.
    inline MenuItemButton(MenuType parent,geom2d::rect<float>rect,std::vector<IT>&invRef,int invIndex,MenuFunc onClick)
        :MenuIconButton(parent,rect,invRef.size()>invIndex?ITEM_DATA.at(invRef[invIndex]).Decal():nullptr,onClick),invRef(invRef),inventoryIndex(invIndex){
        draggable=false;
        valid=invRef.size()>invIndex;
    }
    inline Item GetItem(){
        return Inventory::GetItem(invRef.at(inventoryIndex));
    }
    //Returns true if the item has been consumed completely and there are 0 remaining of that type in our inventory.
    inline bool UseItem(uint32_t amt=1){
        if(invRef.size()<=inventoryIndex)return false;
        return Inventory::UseItem(invRef.at(inventoryIndex),amt);
    }
protected:
    virtual inline void Update(Crawler*game)override{
	    MenuIconButton::Update(game);
        valid=invRef.size()>inventoryIndex&&ITEM_DATA.count(invRef[inventoryIndex]);
        if(Menu::stack.size()>0){
            Menu*menu=Menu::stack.back();
            if(valid){
                icon=ITEM_DATA.at(invRef[inventoryIndex]).Decal();
                if(hovered){
                    switch(parentMenu){
                        case INVENTORY:{
                            //There should be an itemName label to modify.
                            Component<MenuLabel>(INVENTORY,"itemName")->label=ITEM_DATA.at(invRef[inventoryIndex]).Name();
                            //There should be an itemDescription label to modify.
                            Component<MenuLabel>(INVENTORY,"itemDescription")->label=ITEM_DATA.at(invRef[inventoryIndex]).Description();
                        }break;
                    }
                }
            }else{
                icon=nullptr;
                if(hovered){
                    switch(parentMenu){
                        case INVENTORY:{
                            //There should be an itemName label to modify.
                            Component<MenuLabel>(INVENTORY,"itemName")->label="";
                            //There should be an itemDescription label to modify.
                            Component<MenuLabel>(INVENTORY,"itemDescription")->label="";
                        }break;
                    }
                }
            }
        }
    }
    virtual inline void Draw(Crawler*game,vf2d parentPos)override{
        MenuIconButton::Draw(game,parentPos);
        if(selected!=-1){
		    drawutil::DrawCrosshair(game,{parentPos+rect.pos,rect.size},0);
        }
    }
    virtual inline void DrawDecal(Crawler*game,vf2d parentPos,bool focused)override{
	    MenuIconButton::DrawDecal(game,parentPos,focused);
        if(valid){
            std::string quantityText="x"+std::to_string(Inventory::GetItemCount(invRef.at(inventoryIndex)));
            vf2d textSize=vf2d(game->GetTextSizeProp(quantityText))*0.5;
            vf2d drawPos=parentPos+rect.pos+rect.size-textSize;
            if(PointWithinParent(this,drawPos)){
                game->DrawShadowStringDecal(drawPos,quantityText,WHITE,BLACK,{0.5,0.5},0.5);
            }
        }
    }
    virtual inline MenuComponent*PickUpDraggableItem()override{
        if(valid){
            MenuItemButton*pickUp=NEW MenuItemButton(parentMenu,rect,invRef,inventoryIndex,onClick);
            valid=false;
            return pickUp;
        }else{
            return nullptr;
        }
    }

    virtual inline bool DropDraggableItem(MenuComponent*draggable)override{
        //HACK Warning! We're making a bold assumption that every component that is draggable is of the same type! This may change in the future....
        MenuItemButton*draggedItem=(MenuItemButton*)draggable;
        ITCategory cat=ITEM_DATA.at(draggedItem->invRef.at(draggedItem->inventoryIndex)).Category();
        return Inventory::SwapItems(cat,draggedItem->inventoryIndex,inventoryIndex);
    }
};