#include "global.h"
/*
-----------------------------------------------------------------------------
 Class: Inventory

 Desc: See header.

 Copyright (c) 2001-2002 by the person(s) listed below.  All rights reserved.
	Chris Danford
-----------------------------------------------------------------------------
*/

#include "Inventory.h"
#include "ThemeManager.h"
#include "RageUtil.h"
#include "GameState.h"


#define NUM_ITEM_TYPES				THEME->GetMetricF("Inventory","NumItemTypes")
#define ITEM_DURATION_SECONDS		THEME->GetMetricF("Inventory","ItemDurationSeconds")
#define ITEM_COMBO( i )				THEME->GetMetricI("Inventory",ssprintf("Item%dCombo",i+1))
#define ITEM_EFFECT( i )			THEME->GetMetric ("Inventory",ssprintf("Item%dEffect",i+1))


Inventory::Inventory()
{
	RefreshPossibleItems();
	
	// don't load battle sounds if they're not going to be used
	switch( GAMESTATE->m_PlayMode )
	{
	case PLAY_MODE_BATTLE:
		m_soundAcquireItem.Load( THEME->GetPathTo("Sounds","gameplay battle aquire item") );
		m_soundUseItem.Load( THEME->GetPathTo("Sounds","gameplay battle use item") );
		m_soundItemEnding.Load( THEME->GetPathTo("Sounds","gameplay battle item ending") );
		break;
	}
}

void Inventory::RefreshPossibleItems()
{
	m_ItemDefs.clear();

	for( int i=0; i<NUM_ITEM_TYPES; i++ )
	{
		ItemDef def;
		def.comboLevel = ITEM_COMBO(i);
		def.effect = ITEM_EFFECT(i);
		m_ItemDefs.push_back( def );
	}
}


void Inventory::Update( float fDelta )
{
	for( int p=0; p<NUM_PLAYERS; p++ )
	{
		bool bActiveItemsChanged = false;
		for( int i=m_ActiveItems[p].size()-1; i>=0; i-- )
		{
			ActiveItem& active_item = m_ActiveItems[p][i];
			active_item.fSecondsLeft -= fDelta;
			if( active_item.fSecondsLeft < 0 )
			{
				m_ActiveItems[p].erase( m_ActiveItems[p].begin()+i );
				bActiveItemsChanged = true;
			}
		}

		if( bActiveItemsChanged )
		{
			RebuildPlayerOptions( (PlayerNumber)p );
			m_soundItemEnding.Play();
		}
	}
}


bool Inventory::OnComboBroken( PlayerNumber pn, int iCombo )
{
	int* iItems = GAMESTATE->m_iItems[pn];

	// search for the item acquired
	int item;
	for( item=0; item<(int)m_ItemDefs.size(); item++ )
		if( m_ItemDefs[item].comboLevel > iCombo )
			break;

	item--;	// back up because we went one too far

	if( item == -1 )	// no item acquired
		return false;
	else
	{
		// give them an item

		// search for the first open slot
		int iOpenSlot = -1;

		if( iItems[NUM_ITEM_SLOTS/2] == ITEM_NONE )
			iOpenSlot = NUM_ITEM_SLOTS/2;
		else
		{
			for( int s=0; s<NUM_ITEM_SLOTS; s++ )
				if( iItems[s] == ITEM_NONE )
				{
					iOpenSlot = s;
					break;
				}
		}

		if( iOpenSlot != -1 )
		{
			iItems[iOpenSlot] = item;
			m_soundAcquireItem.Play();
		}
		// else not enough room to insert item
	}

	return true;
}

void Inventory::UseItem( PlayerNumber pn, int iSlot )
{
	int* iItems = GAMESTATE->m_iItems[pn];

	if( iItems[iSlot] == ITEM_NONE )
		return;

	int iItemIndex = iItems[iSlot];

    PlayerNumber pnToAttack;
	switch( pn )
	{
	case PLAYER_1:	pnToAttack = PLAYER_2;	break;
	case PLAYER_2:	pnToAttack = PLAYER_1;	break;
	default:	ASSERT(0);	pnToAttack = PLAYER_1;	break;
	}

	// see if there is already an active instance of this item index
	bool bAddedToExisting = false;
	for( unsigned i=0; i<m_ActiveItems[pnToAttack].size(); i++ )
	{
		if( m_ActiveItems[pnToAttack][i].iItemDefIndex == iItemIndex )
		{
			m_ActiveItems[pnToAttack][i].fSecondsLeft += ITEM_DURATION_SECONDS;
			bAddedToExisting = true;
		}
	}
	if( !bAddedToExisting )
	{
		ActiveItem ai = { ITEM_DURATION_SECONDS, iItemIndex };
		m_ActiveItems[pnToAttack].push_back( ai );
	}

	RebuildPlayerOptions( pnToAttack );

	// remove the item
	iItems[iSlot] = ITEM_NONE;

	m_soundUseItem.Play();
}

void Inventory::RebuildPlayerOptions( PlayerNumber pn )
{
	// rebuild player options
	PlayerOptions po = GAMESTATE->m_StoredPlayerOptions[pn];
	for( int i=0; i<(int)m_ActiveItems[pn].size(); i++ )
	{
		int iItemDefIndex = m_ActiveItems[pn][i].iItemDefIndex;
		po.FromString( m_ItemDefs[iItemDefIndex].effect );
	}
	GAMESTATE->m_PlayerOptions[pn] = po;
}


void Inventory::RemoveAllActiveItems()
{
	for( int p=0; p<NUM_PLAYERS; p++ )
		m_ActiveItems[p].clear();
}