/*
===========================================================================
Copyright (C) 2000 - 2013, Raven Software, Inc.
Copyright (C) 2001 - 2013, Activision, Inc.
Copyright (C) 2013 - 2015, OpenJK contributors

This file is part of the OpenJK source code.

OpenJK is free software; you can redistribute it and/or modify it
under the terms of the GNU General Public License version 2 as
published by the Free Software Foundation.

This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.

You should have received a copy of the GNU General Public License
along with this program; if not, see <http://www.gnu.org/licenses/>.
===========================================================================
*/

#include "g_local.h"
#include "b_local.h"
#include "g_functions.h"
#include "wp_saber.h"
#include "w_local.h"
#include "bg_local.h"

#include <JKXR/VrClientInfo.h>

//-------------------
//	Wookiee Bowcaster
//-------------------

//---------------------------------------------------------
static void WP_BowcasterMainFire( gentity_t *ent )
//---------------------------------------------------------
{
	int			damage	= weaponData[WP_BOWCASTER].damage, count;
	float		vel;
	vec3_t		angs, forward, dir, start;
	gentity_t	*missile;

	if ( BG_UseVRPosition(ent))
	{
		BG_CalculateVRWeaponPosition(muzzle, angs);
		AngleVectors(angs, forward, NULL, NULL);
	}
	else {
		VectorCopy(forwardVec, forward);
	}

	VectorCopy( muzzle, start );
	WP_TraceSetStart( ent, start, vec3_origin, vec3_origin );//make sure our start point isn't on the other side of a wall

	// Do the damages
	if ( ent->s.number != 0 )
	{
		if ( g_spskill->integer == 0 )
		{
			damage = BOWCASTER_NPC_DAMAGE_EASY;
		}
		else if ( g_spskill->integer == 1 )
		{
			damage = BOWCASTER_NPC_DAMAGE_NORMAL;
		}
		else
		{
			damage = BOWCASTER_NPC_DAMAGE_HARD;
		}
	}

	count = ( level.time - ent->client->ps.weaponChargeTime ) / BOWCASTER_CHARGE_UNIT;

	if ( count < 1 )
	{
		count = 1;
	}
	else if ( count > 5 )
	{
		count = 5;
	}

	if ( !(count & 1 ))
	{
		// if we aren't odd, knock us down a level
		count--;
	}

//	if ( ent->client && ent->client->ps.powerups[PW_WEAPON_OVERCHARGE] > 0 && ent->client->ps.powerups[PW_WEAPON_OVERCHARGE] > cg.time )
//	{
//		// in overcharge mode, so doing double damage
//		damage *= 2;
//	}

	WP_MissileTargetHint(ent, start, forwardVec);
	for ( int i = 0; i < count; i++ )
	{
		// create a range of different velocities
		vel = BOWCASTER_VELOCITY * ( Q_flrand(-1.0f, 1.0f) * BOWCASTER_VEL_RANGE + 1.0f );

		vectoangles( forward, angs );

		if ( !(ent->client->ps.forcePowersActive&(1<<FP_SEE))
			|| ent->client->ps.forcePowerLevel[FP_SEE] < FORCE_LEVEL_2 )
		{//force sight 2+ gives perfect aim
			//FIXME: maybe force sight level 3 autoaims some?
			// add some slop to the fire direction
			angs[PITCH] += Q_flrand(-1.0f, 1.0f) * BOWCASTER_ALT_SPREAD * 0.2f;
			angs[YAW]	+= ((i+0.5f) * BOWCASTER_ALT_SPREAD - count * 0.5f * BOWCASTER_ALT_SPREAD );
			if ( ent->NPC )
			{
				angs[PITCH] += ( Q_flrand(-1.0f, 1.0f) * (BLASTER_NPC_SPREAD+(6-ent->NPC->currentAim)*0.25f) );
				angs[YAW]	+= ( Q_flrand(-1.0f, 1.0f) * (BLASTER_NPC_SPREAD+(6-ent->NPC->currentAim)*0.25f) );
			}
		}

		AngleVectors( angs, dir, NULL, NULL );

		vec3_t rotatedDir;
		VectorRotateAroundAxis(dir, forward, vr->weaponangles[ANGLES_ADJUSTED][ROLL], rotatedDir);

		missile = CreateMissile( start, rotatedDir, vel, 10000, ent );

		missile->classname = "bowcaster_proj";
		missile->s.weapon = WP_BOWCASTER;

		VectorSet( missile->maxs, BOWCASTER_SIZE, BOWCASTER_SIZE, BOWCASTER_SIZE );
		VectorScale( missile->maxs, -1, missile->mins );

//		if ( ent->client && ent->client->ps.powerups[PW_WEAPON_OVERCHARGE] > 0 && ent->client->ps.powerups[PW_WEAPON_OVERCHARGE] > cg.time )
//		{
//			missile->flags |= FL_OVERCHARGED;
//		}

		missile->damage = damage;
		missile->dflags = DAMAGE_DEATH_KNOCKBACK;
		missile->methodOfDeath = MOD_BOWCASTER;
		missile->clipmask = MASK_SHOT | CONTENTS_LIGHTSABER;
		missile->splashDamage = weaponData[WP_BOWCASTER].splashDamage;
		missile->splashRadius = weaponData[WP_BOWCASTER].splashRadius;

		// we don't want it to bounce
		missile->bounceCount = 0;
		ent->client->sess.missionStats.shotsFired++;
	}
}

//---------------------------------------------------------
static void WP_BowcasterAltFire( gentity_t *ent )
//---------------------------------------------------------
{
	vec3_t	start, forward, angs;
	int		damage	= weaponData[WP_BOWCASTER].altDamage;

	if ( BG_UseVRPosition(ent))
	{
		BG_CalculateVRWeaponPosition(start, angs);
		AngleVectors(angs, forward, NULL, NULL);
	}
	else {
		VectorCopy( muzzle, start );
		VectorCopy( forwardVec, forward );
	}

	WP_TraceSetStart( ent, start, vec3_origin, vec3_origin );//make sure our start point isn't on the other side of a wall

	WP_MissileTargetHint(ent, start, forward);

	gentity_t *missile = CreateMissile( start, forward, BOWCASTER_VELOCITY, 10000, ent, qtrue );

	missile->classname = "bowcaster_alt_proj";
	missile->s.weapon = WP_BOWCASTER;

	// Do the damages
	if ( ent->s.number != 0 )
	{
		if ( g_spskill->integer == 0 )
		{
			damage = BOWCASTER_NPC_DAMAGE_EASY;
		}
		else if ( g_spskill->integer == 1 )
		{
			damage = BOWCASTER_NPC_DAMAGE_NORMAL;
		}
		else
		{
			damage = BOWCASTER_NPC_DAMAGE_HARD;
		}
	}

	VectorSet( missile->maxs, BOWCASTER_SIZE, BOWCASTER_SIZE, BOWCASTER_SIZE );
	VectorScale( missile->maxs, -1, missile->mins );

//	if ( ent->client && ent->client->ps.powerups[PW_WEAPON_OVERCHARGE] > 0 && ent->client->ps.powerups[PW_WEAPON_OVERCHARGE] > cg.time )
//	{
//		// in overcharge mode, so doing double damage
//		missile->flags |= FL_OVERCHARGED;
//		damage *= 2;
//	}

	missile->s.eFlags |= EF_BOUNCE;
	missile->bounceCount = 3;

	missile->damage = damage;
	missile->dflags = DAMAGE_DEATH_KNOCKBACK;
	missile->methodOfDeath = MOD_BOWCASTER_ALT;
	missile->clipmask = MASK_SHOT | CONTENTS_LIGHTSABER;
	missile->splashDamage = weaponData[WP_BOWCASTER].altSplashDamage;
	missile->splashRadius = weaponData[WP_BOWCASTER].altSplashRadius;
}

//---------------------------------------------------------
void WP_FireBowcaster( gentity_t *ent, qboolean alt_fire )
//---------------------------------------------------------
{
	if ( alt_fire )
	{
		WP_BowcasterAltFire( ent );
	}
	else
	{
		WP_BowcasterMainFire( ent );
	}
}