/***
*
*	Copyright (c) 1996-2001, 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.
*
****/

#include "extdll.h"
#include "util.h"
#include "cbase.h"
#include "monsters.h"
#include "weapons.h"
#include "nodes.h"
#include "player.h"
#include "gamerules.h"

#define	SPANNER_BODYHIT_VOLUME 128
#define	SPANNER_WALLHIT_VOLUME 512

extern void FindHullIntersection( const Vector &vecSrc, TraceResult &tr, float *mins, float *maxs, edict_t *pEntity );

LINK_ENTITY_TO_CLASS( weapon_th_spanner, CWeaponEinarSpanner )

enum spanner_e
{
	SPANNER_IDLE = 0,
	SPANNER_ATTACK1,
	SPANNER_ATTACK2,
	SPANNER_USE,
	SPANNER_DRAW,
	SPANNER_HOLSTER
};

void CWeaponEinarSpanner::Spawn()
{
	Precache();
	m_iId = WEAPON_SPANNER;
	SET_MODEL( ENT( pev ), "models/backpack.mdl" );
	m_iClip = -1;

	FallInit();// get ready to fall down.
}

void CWeaponEinarSpanner::Precache()
{
	PRECACHE_MODEL( "models/v_tfc_spanner.mdl" );
	PRECACHE_MODEL( "models/backpack.mdl" );
	PRECACHE_MODEL( "models/p_spanner.mdl" );
/*
	PRECACHE_SOUND( "weapons/cbar_hit1.wav" );
	PRECACHE_SOUND( "weapons/cbar_hit2.wav" );
	PRECACHE_SOUND( "weapons/cbar_hitbod1.wav" );
	PRECACHE_SOUND( "weapons/cbar_hitbod2.wav" );
	PRECACHE_SOUND( "weapons/cbar_hitbod3.wav" );
	PRECACHE_SOUND( "weapons/cbar_miss1.wav" );

	PRECACHE_SOUND( "kelly/cbar_hitkelly1.wav" );
	PRECACHE_SOUND( "kelly/cbar_hitkelly2.wav" );
	PRECACHE_SOUND( "kelly/cbar_hitkelly3.wav" );
*/
}

int CWeaponEinarSpanner::GetItemInfo( ItemInfo *p )
{
	p->pszName = STRING( pev->classname );
	p->pszAmmo1 = NULL;
	p->iMaxAmmo1 = -1;
	p->pszAmmo2 = NULL;
	p->iMaxAmmo2 = -1;
	p->iMaxClip = WEAPON_NOCLIP;
	p->iSlot = 0;
	p->iPosition = 2;
	p->iId = WEAPON_SPANNER;
	p->iWeight = SPANNER_WEIGHT;
	return 1;
}

int CWeaponEinarSpanner::AddToPlayer( CBasePlayer *pPlayer )
{
	if( CBasePlayerWeapon::AddToPlayer( pPlayer ) )
	{
		MESSAGE_BEGIN( MSG_ONE, gmsgWeapPickup, NULL, pPlayer->pev );
			WRITE_BYTE( m_iId );
		MESSAGE_END();
		return TRUE;
	}
	return FALSE;
}

BOOL CWeaponEinarSpanner::Deploy()
{
	return DefaultDeploy( "models/v_tfc_spanner.mdl", "models/p_spanner.mdl", SPANNER_DRAW, "crowbar" );
}

void CWeaponEinarSpanner::Holster(int skiplocal /* = 0 */)
{
	m_pPlayer->m_flNextAttack = UTIL_WeaponTimeBase() + 0.5f;
	SendWeaponAnim( SPANNER_HOLSTER );
}

void CWeaponEinarSpanner::PrimaryAttack()
{
	if( !Swing( 1 ) )
	{
		SetThink( &CWeaponEinarSpanner::SwingAgain );
		pev->nextthink = gpGlobals->time + 0.1f;
	}
}

void CWeaponEinarSpanner::Smack()
{
	DecalGunshot( &m_trHit, BULLET_PLAYER_CROWBAR );
}

void CWeaponEinarSpanner::SwingAgain( void )
{
	Swing( 0 );
}

int CWeaponEinarSpanner::Swing( int fFirst )
{
	int fDidHit = FALSE;

	TraceResult tr;

	UTIL_MakeVectors( m_pPlayer->pev->v_angle );
	Vector vecSrc = m_pPlayer->GetGunPosition();
	Vector vecEnd = vecSrc + gpGlobals->v_forward * 32;

	UTIL_TraceLine( vecSrc, vecEnd, dont_ignore_monsters, ENT( m_pPlayer->pev ), &tr );

#if !CLIENT_DLL
	if( tr.flFraction >= 1.0f )
	{
		UTIL_TraceHull( vecSrc, vecEnd, dont_ignore_monsters, head_hull, ENT( m_pPlayer->pev ), &tr );
		if( tr.flFraction < 1.0f )
		{
			// Calculate the point of intersection of the line (or hull) and the object we hit
			// This is and approximation of the "best" intersection
			CBaseEntity *pHit = CBaseEntity::Instance( tr.pHit );
			if( !pHit || pHit->IsBSPModel() )
				FindHullIntersection( vecSrc, tr, VEC_DUCK_HULL_MIN, VEC_DUCK_HULL_MAX, m_pPlayer->edict() );
			vecEnd = tr.vecEndPos;	// This is the point on the actual surface (the hull could have hit space)
		}
	}
#endif
	if( tr.flFraction >= 1.0f )
	{
		if( fFirst )
		{
			// miss
			if( RANDOM_FLOAT( 0.0f, 1.0f ) <= 0.25f )
				++m_iSwing;
			switch( ( m_iSwing++ ) % 2 )
			{
			case 0:
				SendWeaponAnim( SPANNER_ATTACK1 );
				break;
			case 1:
				SendWeaponAnim( SPANNER_ATTACK2 );
				break;
			}
			m_flNextPrimaryAttack = UTIL_WeaponTimeBase() + 0.4f;

			EMIT_SOUND_DYN( ENT( m_pPlayer->pev ), CHAN_WEAPON, "weapons/cbar_miss1.wav", 1, ATTN_NORM, 0, 94 + RANDOM_LONG( 0, 0xF ) );
#if CROWBAR_IDLE_ANIM
			m_flTimeWeaponIdle = UTIL_WeaponTimeBase() + UTIL_SharedRandomFloat( m_pPlayer->random_seed, 10, 15 );
#endif
			// player "shoot" animation
			m_pPlayer->SetAnimation( PLAYER_ATTACK1 );
		}
	}
	else
	{
		switch( ( m_iSwing++ ) % 2 )
		{
		case 0:
			SendWeaponAnim( SPANNER_ATTACK1 );
			break;
		case 1:
			SendWeaponAnim( SPANNER_ATTACK2 );
			break;
		}

		// player "shoot" animation
		m_pPlayer->SetAnimation( PLAYER_ATTACK1 );
#if !CLIENT_DLL
		// hit
		fDidHit = TRUE;
		CBaseEntity *pEntity = CBaseEntity::Instance( tr.pHit );

		// play thwack, smack, or dong sound
		float flVol = 1.0;
		int fHitWorld = TRUE;

		if( pEntity )
		{
			float flDmg;
			ClearMultiDamage();

			if( g_pGameRules->IsMultiplayer() )
			{
				// more damage in multiplayer
				flDmg = gSkillData.plrDmgCrowbar * 1.2f;
			}
			else if( m_flNextPrimaryAttack + 1.0f < UTIL_WeaponTimeBase() )
			{
				// first swing does full damage
				flDmg = gSkillData.plrDmgCrowbar * 0.8f;
			}
			else
			{
				// subsequent swings do half
				flDmg = gSkillData.plrDmgCrowbar * 0.4f;
			}
			pEntity->TraceAttack( m_pPlayer->pev, flDmg, gpGlobals->v_forward, &tr, DMG_CLUB );
			ApplyMultiDamage( m_pPlayer->pev, m_pPlayer->pev );

			if( pEntity->Classify() != CLASS_NONE && pEntity->Classify() != CLASS_MACHINE )
			{
				// Skeletons make different hit sounds.
				if( pEntity->Classify() == CLASS_SKELETON )
				{
					// play thwack or smack sound
					switch( RANDOM_LONG( 0, 2 ) )
					{
					case 0:
						EMIT_SOUND( ENT( m_pPlayer->pev ), CHAN_ITEM, "kelly/cbar_hitkelly1.wav", 1, ATTN_NORM );
						break;
					case 1:
						EMIT_SOUND( ENT( m_pPlayer->pev ), CHAN_ITEM, "kelly/cbar_hitkelly2.wav", 1, ATTN_NORM );
						break;
					case 2:
						EMIT_SOUND( ENT( m_pPlayer->pev ), CHAN_ITEM, "kelly/cbar_hitkelly3.wav", 1, ATTN_NORM );
						break;
					}
				}
				else
				{
					// play thwack or smack sound
					switch( RANDOM_LONG( 0, 2 ) )
					{
					case 0:
						EMIT_SOUND( ENT( m_pPlayer->pev ), CHAN_ITEM, "weapons/cbar_hitbod1.wav", 1, ATTN_NORM );
						break;
					case 1:
						EMIT_SOUND( ENT( m_pPlayer->pev ), CHAN_ITEM, "weapons/cbar_hitbod2.wav", 1, ATTN_NORM );
						break;
					case 2:
						EMIT_SOUND( ENT( m_pPlayer->pev ), CHAN_ITEM, "weapons/cbar_hitbod3.wav", 1, ATTN_NORM );
						break;
					}
				}

				m_pPlayer->m_iWeaponVolume = SPANNER_BODYHIT_VOLUME;
				if( !pEntity->IsAlive() )
					return TRUE;
				else
					flVol = 0.1;

				fHitWorld = FALSE;
			}
		}

		// play texture hit sound
		// UNDONE: Calculate the correct point of intersection when we hit with the hull instead of the line

		if( fHitWorld )
		{
			float fvolbar = TEXTURETYPE_PlaySound( &tr, vecSrc, vecSrc + ( vecEnd - vecSrc ) * 2, BULLET_PLAYER_CROWBAR );

			if( g_pGameRules->IsMultiplayer() )
			{
				// override the volume here, cause we don't play texture sounds in multiplayer, 
				// and fvolbar is going to be 0 from the above call.
				fvolbar = 1;
			}

			// also play crowbar strike
			switch( RANDOM_LONG( 0, 1 ) )
			{
			case 0:
				EMIT_SOUND_DYN( ENT( m_pPlayer->pev ), CHAN_ITEM, "weapons/cbar_hit1.wav", fvolbar, ATTN_NORM, 0, 98 + RANDOM_LONG( 0, 3 ) );
				break;
			case 1:
				EMIT_SOUND_DYN( ENT( m_pPlayer->pev ), CHAN_ITEM, "weapons/cbar_hit2.wav", fvolbar, ATTN_NORM, 0, 98 + RANDOM_LONG( 0, 3 ) );
				break;
			}

			// delay the decal a bit
			m_trHit = tr;
		}

		m_pPlayer->m_iWeaponVolume = flVol * SPANNER_WALLHIT_VOLUME;
#endif
		m_flNextPrimaryAttack = UTIL_WeaponTimeBase() + 0.2f;

		SetThink( &CWeaponEinarSpanner::Smack );
		pev->nextthink = UTIL_WeaponTimeBase() + 0.2f;
	}
#if CROWBAR_IDLE_ANIM
	m_flTimeWeaponIdle = UTIL_WeaponTimeBase() + UTIL_SharedRandomFloat( m_pPlayer->random_seed, 10, 15 );
#endif
	return fDidHit;
}

#if CROWBAR_IDLE_ANIM
void CWeaponEinarSpanner::WeaponIdle()
{
	if( m_flTimeWeaponIdle < UTIL_WeaponTimeBase() )
	{
		m_flTimeWeaponIdle = UTIL_WeaponTimeBase() + UTIL_SharedRandomFloat( m_pPlayer->random_seed, 5, 10 );
		SendWeaponAnim( SPANNER_IDLE );
	}
}
#endif