/***
*
*	Copyright (c) 1996-2002, Valve LLC. All rights reserved.
*	
*	This product contains software technology licensed from Id 
*	Software, Inc. ("Id Technology").  Id Technology (c) 1996 Id Software, Inc. 
*	All Rights Reserved.
*
*   Use, distribution, and modification of this source code and/or resulting
*   object code is restricted to non-commercial enhancements to products from
*   Valve LLC.  All other use, distribution, or modification is prohibited
*   without written permission from Valve LLC.
*
****/
//
// teamplay_gamerules.cpp
//
#include	"extdll.h"
#include	"util.h"
#include	"cbase.h"
#include	"player.h"
#include	"weapons.h"
#include	"gamerules.h"
#include	"skill.h"
#include	"items.h"

extern DLL_GLOBAL CGameRules	*g_pGameRules;
extern DLL_GLOBAL BOOL	g_fGameOver;
extern int gmsgDeathMsg;	// client dll messages
extern int gmsgScoreInfo;
extern int gmsgMOTD;

//=========================================================
//=========================================================
CHalfLifeRules::CHalfLifeRules( void )
{
	RefreshSkillData();
}

//=========================================================
//=========================================================
void CHalfLifeRules::Think ( void )
{
}

//=========================================================
//=========================================================
BOOL CHalfLifeRules::IsMultiplayer( void )
{
	return FALSE;
}

//=========================================================
//=========================================================
BOOL CHalfLifeRules::IsDeathmatch ( void )
{
	return FALSE;
}

//=========================================================
//=========================================================
BOOL CHalfLifeRules::IsCoOp( void )
{
	return FALSE;
}


//=========================================================
//=========================================================
BOOL CHalfLifeRules::FShouldSwitchWeapon( CBasePlayer *pPlayer, CBasePlayerItem *pWeapon )
{
	if ( !pPlayer->m_pActiveItem )
	{
		// player doesn't have an active item!
		return TRUE;
	}

	if ( !pPlayer->m_pActiveItem->CanHolster() )
	{
		return FALSE;
	}

	return TRUE;
}

//=========================================================
//=========================================================
// buz: скопировано из MultiplayerRules
BOOL CHalfLifeRules :: GetNextBestWeapon( CBasePlayer *pPlayer, CBasePlayerItem *pCurrentWeapon )
{
	CBasePlayerItem *pCheck;
	CBasePlayerItem *pBest;// this will be used in the event that we don't find a weapon in the same category.
	int iBestWeight;
	int i;

	iBestWeight = -1;// no weapon lower than -1 can be autoswitched to
	pBest = NULL;

	if ( !pCurrentWeapon->CanHolster() )
	{
		// can't put this gun away right now, so can't switch.
		return FALSE;
	}

	for ( i = 0 ; i < MAX_ITEM_TYPES ; i++ )
	{
		pCheck = pPlayer->m_rgpPlayerItems[ i ];

		while ( pCheck )
		{
			if ( pCheck->iWeight() > -1 && pCheck->iWeight() == pCurrentWeapon->iWeight() && pCheck != pCurrentWeapon )
			{
				// this weapon is from the same category. 
				if ( pCheck->CanDeploy() )
				{
					if ( pPlayer->SwitchWeapon( pCheck ) )
					{
						return TRUE;
					}
				}
			}
			else if ( pCheck->iWeight() > iBestWeight && pCheck != pCurrentWeapon )// don't reselect the weapon we're trying to get rid of
			{
				//ALERT ( at_console, "Considering %s\n", STRING( pCheck->pev->classname ) );
				// we keep updating the 'best' weapon just in case we can't find a weapon of the same weight
				// that the player was using. This will end up leaving the player with his heaviest-weighted 
				// weapon. 
				if ( pCheck->CanDeploy() )
				{
					// if this weapon is useable, flag it as the best
					iBestWeight = pCheck->iWeight();
					pBest = pCheck;
				}
			}

			pCheck = pCheck->m_pNext;
		}
	}

	// if we make it here, we've checked all the weapons and found no useable 
	// weapon in the same catagory as the current weapon. 
	
	// if pBest is null, we didn't find ANYTHING. Shouldn't be possible- should always 
	// at least get the crowbar, but ya never know.
	if ( !pBest )
	{
		return FALSE;
	}

	pPlayer->SwitchWeapon( pBest );

	return TRUE;
}

//=========================================================
//=========================================================
BOOL CHalfLifeRules :: ClientConnected( edict_t *pEntity, const char *pszName, const char *pszAddress, char szRejectReason[ 128 ] )
{
	return TRUE;
}

void CHalfLifeRules :: InitHUD( CBasePlayer *pl )
{
}

//=========================================================
//=========================================================
void CHalfLifeRules :: ClientDisconnected( edict_t *pClient )
{
}

//=========================================================
//=========================================================
float CHalfLifeRules::FlPlayerFallDamage( CBasePlayer *pPlayer )
{
	// subtract off the speed at which a player is allowed to fall without being hurt,
	// so damage will be based on speed beyond that, not the entire fall
	pPlayer->m_flFallVelocity -= PLAYER_MAX_SAFE_FALL_SPEED;
	return pPlayer->m_flFallVelocity * DAMAGE_FOR_FALL_SPEED;
}

//=========================================================
//=========================================================
void CHalfLifeRules :: PlayerSpawn( CBasePlayer *pPlayer )
{
	CBaseEntity	*pWeaponEntity = NULL;

// LRC what's wrong with allowing "game_player_equip" entities in single player? (The
// level designer is God: if he wants the player to start with a weapon, we should allow it!)
	while (( pWeaponEntity = UTIL_FindEntityByClassname( pWeaponEntity, "game_player_equip" )))
	{
		pWeaponEntity->Touch( pPlayer );
	}
}

//=========================================================
//=========================================================
BOOL CHalfLifeRules :: AllowAutoTargetCrosshair( void )
{
	return ( g_iSkillLevel == SKILL_EASY );
}

//=========================================================
//=========================================================
void CHalfLifeRules :: PlayerThink( CBasePlayer *pPlayer )
{
}


//=========================================================
//=========================================================
BOOL CHalfLifeRules :: FPlayerCanRespawn( CBasePlayer *pPlayer )
{
	return TRUE;
}

//=========================================================
//=========================================================
float CHalfLifeRules :: FlPlayerSpawnTime( CBasePlayer *pPlayer )
{
	return gpGlobals->time;//now!
}

//=========================================================
// IPointsForKill - how many points awarded to anyone
// that kills this player?
//=========================================================
int CHalfLifeRules :: IPointsForKill( CBasePlayer *pAttacker, CBasePlayer *pKilled )
{
	return 1;
}

//=========================================================
// PlayerKilled - someone/something killed this player
//=========================================================
void CHalfLifeRules :: PlayerKilled( CBasePlayer *pVictim, entvars_t *pKiller, entvars_t *pInflictor )
{
}

//=========================================================
// Deathnotice
//=========================================================
void CHalfLifeRules::DeathNotice( CBasePlayer *pVictim, entvars_t *pKiller, entvars_t *pInflictor )
{
}

//=========================================================
// PlayerGotWeapon - player has grabbed a weapon that was
// sitting in the world
//=========================================================
void CHalfLifeRules :: PlayerGotWeapon( CBasePlayer *pPlayer, CBasePlayerItem *pWeapon )
{
}

//=========================================================
// FlWeaponRespawnTime - what is the time in the future
// at which this weapon may spawn?
//=========================================================
float CHalfLifeRules :: FlWeaponRespawnTime( CBasePlayerItem *pWeapon )
{
	return -1;
}

//=========================================================
// FlWeaponRespawnTime - Returns 0 if the weapon can respawn 
// now,  otherwise it returns the time at which it can try
// to spawn again.
//=========================================================
float CHalfLifeRules :: FlWeaponTryRespawn( CBasePlayerItem *pWeapon )
{
	return 0;
}

//=========================================================
// VecWeaponRespawnSpot - where should this weapon spawn?
// Some game variations may choose to randomize spawn locations
//=========================================================
Vector CHalfLifeRules :: VecWeaponRespawnSpot( CBasePlayerItem *pWeapon )
{
	return pWeapon->pev->origin;
}

//=========================================================
// WeaponShouldRespawn - any conditions inhibiting the
// respawning of this weapon?
//=========================================================
int CHalfLifeRules :: WeaponShouldRespawn( CBasePlayerItem *pWeapon )
{
	return GR_WEAPON_RESPAWN_NO;
}

//=========================================================
//=========================================================
BOOL CHalfLifeRules::CanHaveItem( CBasePlayer *pPlayer, CItem *pItem )
{
	return TRUE;
}

//=========================================================
//=========================================================
void CHalfLifeRules::PlayerGotItem( CBasePlayer *pPlayer, CItem *pItem )
{
}

//=========================================================
//=========================================================
int CHalfLifeRules::ItemShouldRespawn( CItem *pItem )
{
	return GR_ITEM_RESPAWN_NO;
}


//=========================================================
// At what time in the future may this Item respawn?
//=========================================================
float CHalfLifeRules::FlItemRespawnTime( CItem *pItem )
{
	return -1;
}

//=========================================================
// Where should this item respawn?
// Some game variations may choose to randomize spawn locations
//=========================================================
Vector CHalfLifeRules::VecItemRespawnSpot( CItem *pItem )
{
	return pItem->pev->origin;
}

//=========================================================
//=========================================================
BOOL CHalfLifeRules::IsAllowedToSpawn( CBaseEntity *pEntity )
{
	return TRUE;
}

//=========================================================
//=========================================================
void CHalfLifeRules::PlayerGotAmmo( CBasePlayer *pPlayer, char *szName, int iCount )
{
}

//=========================================================
//=========================================================
int CHalfLifeRules::AmmoShouldRespawn( CBasePlayerAmmo *pAmmo )
{
	return GR_AMMO_RESPAWN_NO;
}

//=========================================================
//=========================================================
float CHalfLifeRules::FlAmmoRespawnTime( CBasePlayerAmmo *pAmmo )
{
	return -1;
}

//=========================================================
//=========================================================
Vector CHalfLifeRules::VecAmmoRespawnSpot( CBasePlayerAmmo *pAmmo )
{
	return pAmmo->pev->origin;
}

//=========================================================
//=========================================================
float CHalfLifeRules::FlHealthChargerRechargeTime( void )
{
	return 0;// don't recharge
}

//=========================================================
//=========================================================
int CHalfLifeRules::DeadPlayerWeapons( CBasePlayer *pPlayer )
{
	return GR_PLR_DROP_GUN_NO;
}

//=========================================================
//=========================================================
int CHalfLifeRules::DeadPlayerAmmo( CBasePlayer *pPlayer )
{
	return GR_PLR_DROP_AMMO_NO;
}

//=========================================================
//=========================================================
int CHalfLifeRules::PlayerRelationship( CBaseEntity *pPlayer, CBaseEntity *pTarget )
{
	// why would a single player in half life need this? 
	return GR_NOTTEAMMATE;
}

//=========================================================
//=========================================================
BOOL CHalfLifeRules :: FAllowMonsters( void )
{
	return TRUE;
}