// ItemGrid.h
// Declares the cItemGrid class representing a storage for items in a XY grid (chests, dispensers, inventory etc.)
#pragma once
#include "Item.h"
// tolua_begin
class cItemGrid
{
public:
// tolua_end
cItemGrid(int a_Width, int a_Height);
~cItemGrid();
// tolua_begin
int GetWidth (void) const { return m_Width; }
int GetHeight (void) const { return m_Height; }
int GetNumSlots(void) const { return m_NumSlots; }
/// Converts XY coords into slot number; returns -1 on invalid coords
int GetSlotNum(int a_X, int a_Y) const;
// tolua_end
/// Converts slot number into XY coords; sets coords to -1 on invalid slot number. Exported in ManualBindings.cpp
void GetSlotCoords(int a_SlotNum, int & a_X, int & a_Y) const;
// tolua_begin
// Retrieve items by coords or slot number; Logs warning and returns the first item on invalid coords / slotnum
const cItem & GetItem(int a_X, int a_Y) const;
cItem & GetItem(int a_X, int a_Y);
const cItem & GetItem(int a_SlotNum) const;
cItem & GetItem(int a_SlotNum);
// Set item by coords or slot number; Logs warning and doesn't set on invalid coords / slotnum
void SetItem(int a_X, int a_Y, const cItem & a_Item);
void SetItem(int a_X, int a_Y, short a_ItemType, char a_ItemCount, short a_ItemDamage);
void SetItem(int a_SlotNum, const cItem & a_Item);
void SetItem(int a_SlotNum, short a_ItemType, char a_ItemCount, short a_ItemDamage);
/// Sets all items as empty
void Clear(void);
/// Returns number of items out of a_ItemStack that can fit in the storage
int HowManyCanFit(const cItem & a_ItemStack);
/// Adds as many items out of a_ItemStack as can fit; the rest is left in a_ItemStack; returns true if any items fit.
bool AddItem(cItem & a_ItemStack);
/// Same as AddItem, but works on an entire list of item stacks
bool AddItems(cItems & a_ItemStackList);
/// Returns the index of the first empty slot; -1 if all full
int GetFirstEmptySlot(void) const;
/// Returns the index of the last empty slot; -1 if all full
int GetLastEmptySlot(void) const;
/// Returns the index of the first empty slot following a_StartFrom (a_StartFrom is not checked)
int GetNextEmptySlot(int a_StartFrom) const;
/// Copies the contents into a cItems object
void CopyToItems(cItems & a_Items) const;
// tolua_end
/** Generates random loot from the specified loot probability table, with a chance of enchanted books added.
A total of a_NumSlots are taken by the loot.
Cannot export to Lua due to raw array a_LootProbabs.
*/
void GenerateRandomLootWithBooks(const cLootProbab * a_LootProbabs, int a_CountLootProbabs, int a_NumSlots, int a_Seed);
// tolua_begin
protected:
int m_Width;
int m_Height;
int m_NumSlots; // m_Width * m_Height, for easier validity checking in the access functions
cItem * m_Items; // x + m_Width * y
} ;
// tolua_end
