/*
===========================================================================
Copyright (C) 1997-2001 Id Software, Inc.
Copyright (C) 2000-2002 Mr. Hyde and Mad Dog

This file is part of Lazarus Quake 2 Mod source code.

Lazarus Quake 2 Mod source code is free software; you can redistribute it
and/or modify it under the terms of the GNU General Public License as
published by the Free Software Foundation; either version 2 of the License,
or (at your option) any later version.

Lazarus Quake 2 Mod source code 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 Lazarus Quake 2 Mod source code; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
===========================================================================
*/

/*
==============================================================================

TANK

==============================================================================
*/

#include "g_local.h"
#include "m_tank.h"


void tank_refire_rocket (edict_t *self);
void tank_doattack_rocket (edict_t *self);
void tank_reattack_blaster (edict_t *self);

static int	sound_thud;
static int	sound_pain;
static int	sound_idle;
static int	sound_die;
static int	sound_step;
static int	sound_sight;
static int	sound_windup;
static int	sound_strike;

//
// misc
//

void tank_sight (edict_t *self, edict_t *other)
{
	gi.sound (self, CHAN_VOICE, sound_sight, 1, ATTN_NORM, 0);
}


void tank_footstep (edict_t *self)
{
	gi.sound (self, CHAN_BODY, sound_step, 1, ATTN_NORM, 0);
}

void tank_thud (edict_t *self)
{
	gi.sound (self, CHAN_BODY, sound_thud, 1, ATTN_NORM, 0);
}

void tank_windup (edict_t *self)
{
	gi.sound (self, CHAN_WEAPON, sound_windup, 1, ATTN_NORM, 0);
}

void tank_idle (edict_t *self)
{
	if (!(self->spawnflags & SF_MONSTER_AMBUSH))
		gi.sound (self, CHAN_VOICE, sound_idle, 1, ATTN_IDLE, 0);
}


//
// stand
//

mframe_t tank_frames_stand []=
{
	ai_stand, 0, NULL,
	ai_stand, 0, NULL,
	ai_stand, 0, NULL,
	ai_stand, 0, NULL,
	ai_stand, 0, NULL,
	ai_stand, 0, NULL,
	ai_stand, 0, NULL,
	ai_stand, 0, NULL,
	ai_stand, 0, NULL,
	ai_stand, 0, NULL,
	ai_stand, 0, NULL,
	ai_stand, 0, NULL,
	ai_stand, 0, NULL,
	ai_stand, 0, NULL,
	ai_stand, 0, NULL,
	ai_stand, 0, NULL,
	ai_stand, 0, NULL,
	ai_stand, 0, NULL,
	ai_stand, 0, NULL,
	ai_stand, 0, NULL,
	ai_stand, 0, NULL,
	ai_stand, 0, NULL,
	ai_stand, 0, NULL,
	ai_stand, 0, NULL,
	ai_stand, 0, NULL,
	ai_stand, 0, NULL,
	ai_stand, 0, NULL,
	ai_stand, 0, NULL,
	ai_stand, 0, NULL,
	ai_stand, 0, NULL
};
mmove_t	tank_move_stand = {FRAME_stand01, FRAME_stand30, tank_frames_stand, NULL};
	
void tank_stand (edict_t *self)
{
	self->monsterinfo.currentmove = &tank_move_stand;
}


//
// walk
//

void tank_walk (edict_t *self);

mframe_t tank_frames_start_walk [] =
{
	ai_walk,  0, NULL,
	ai_walk,  6, NULL,
	ai_walk,  6, NULL,
	ai_walk, 11, tank_footstep
};
mmove_t	tank_move_start_walk = {FRAME_walk01, FRAME_walk04, tank_frames_start_walk, tank_walk};

mframe_t tank_frames_walk [] =
{
	ai_walk, 4,	NULL,
	ai_walk, 5,	NULL,
	ai_walk, 3,	NULL,
	ai_walk, 2,	NULL,
	ai_walk, 5,	NULL,
	ai_walk, 5,	NULL,
	ai_walk, 4,	NULL,
	ai_walk, 4,	tank_footstep,
	ai_walk, 3,	NULL,
	ai_walk, 5,	NULL,
	ai_walk, 4,	NULL,
	ai_walk, 5,	NULL,
	ai_walk, 7,	NULL,
	ai_walk, 7,	NULL,
	ai_walk, 6,	NULL,
	ai_walk, 6,	tank_footstep
};
mmove_t	tank_move_walk = {FRAME_walk05, FRAME_walk20, tank_frames_walk, NULL};

mframe_t tank_frames_stop_walk [] =
{
	ai_walk,  3, NULL,
	ai_walk,  3, NULL,
	ai_walk,  2, NULL,
	ai_walk,  2, NULL,
	ai_walk,  4, tank_footstep
};
mmove_t	tank_move_stop_walk = {FRAME_walk21, FRAME_walk25, tank_frames_stop_walk, tank_stand};

void tank_walk (edict_t *self)
{
		self->monsterinfo.currentmove = &tank_move_walk;
}


//
// run
//

void tank_run (edict_t *self);

mframe_t tank_frames_start_run [] =
{
	ai_run,  0, NULL,
	ai_run,  6, NULL,
	ai_run,  6, NULL,
	ai_run, 11, tank_footstep
};
mmove_t	tank_move_start_run = {FRAME_walk01, FRAME_walk04, tank_frames_start_run, tank_run};

mframe_t tank_frames_run [] =
{
	ai_run, 4,	NULL,
	ai_run, 5,	NULL,
	ai_run, 3,	NULL,
	ai_run, 2,	NULL,
	ai_run, 5,	NULL,
	ai_run, 5,	NULL,
	ai_run, 4,	NULL,
	ai_run, 4,	tank_footstep,
	ai_run, 3,	NULL,
	ai_run, 5,	NULL,
	ai_run, 4,	NULL,
	ai_run, 5,	NULL,
	ai_run, 7,	NULL,
	ai_run, 7,	NULL,
	ai_run, 6,	NULL,
	ai_run, 6,	tank_footstep
};
mmove_t	tank_move_run = {FRAME_walk05, FRAME_walk20, tank_frames_run, NULL};

mframe_t tank_frames_stop_run [] =
{
	ai_run,  3, NULL,
	ai_run,  3, NULL,
	ai_run,  2, NULL,
	ai_run,  2, NULL,
	ai_run,  4, tank_footstep
};
mmove_t	tank_move_stop_run = {FRAME_walk21, FRAME_walk25, tank_frames_stop_run, tank_walk};

void tank_run (edict_t *self)
{
	if (self->enemy && self->enemy->client)
		self->monsterinfo.aiflags |= AI_BRUTAL;
	else
		self->monsterinfo.aiflags &= ~AI_BRUTAL;

	if (self->monsterinfo.aiflags & AI_STAND_GROUND)
	{
		self->monsterinfo.currentmove = &tank_move_stand;
		return;
	}

	if (self->monsterinfo.currentmove == &tank_move_walk ||
		self->monsterinfo.currentmove == &tank_move_start_run)
	{
		self->monsterinfo.currentmove = &tank_move_run;
	}
	else
	{
		self->monsterinfo.currentmove = &tank_move_start_run;
	}
}

//
// pain
//

mframe_t tank_frames_pain1 [] =
{
	ai_move, 0, NULL,
	ai_move, 0, NULL,
	ai_move, 0, NULL,
	ai_move, 0, NULL
};
mmove_t tank_move_pain1 = {FRAME_pain101, FRAME_pain104, tank_frames_pain1, tank_run};

mframe_t tank_frames_pain2 [] =
{
	ai_move, 0, NULL,
	ai_move, 0, NULL,
	ai_move, 0, NULL,
	ai_move, 0, NULL,
	ai_move, 0, NULL
};
mmove_t tank_move_pain2 = {FRAME_pain201, FRAME_pain205, tank_frames_pain2, tank_run};

mframe_t tank_frames_pain3 [] =
{
	ai_move, -7, NULL,
	ai_move, 0,  NULL,
	ai_move, 0,  NULL,
	ai_move, 0,  NULL,
	ai_move, 2,  NULL,
	ai_move, 0,  NULL,
	ai_move, 0,  NULL,
	ai_move, 3,  NULL,
	ai_move, 0,  NULL,
	ai_move, 2,  NULL,
	ai_move, 0,  NULL,
	ai_move, 0,  NULL,
	ai_move, 0,  NULL,
	ai_move, 0,  NULL,
	ai_move, 0,  NULL,
	ai_move, 0,  tank_footstep
};
mmove_t	tank_move_pain3 = {FRAME_pain301, FRAME_pain316, tank_frames_pain3, tank_run};


void tank_pain (edict_t *self, edict_t *other, float kick, int damage)
{
	if (self->health < (self->max_health / 2))
	{
		self->s.skinnum |= 1;
		if (!(self->fogclip & 2)) //custom bloodtype flag check
			self->blood_type = 3; //sparks and blood
	}

	if (damage <= 10)
		return;

	if (level.time < self->pain_debounce_time)
			return;

	if (damage <= 30)
		if (random() > 0.2)
			return;
	
	// If hard or nightmare, don't go into pain while attacking
	if ( skill->value >= 2)
	{
		if ( (self->s.frame >= FRAME_attak301) && (self->s.frame <= FRAME_attak330) )
			return;
		if ( (self->s.frame >= FRAME_attak101) && (self->s.frame <= FRAME_attak116) )
			return;
	}

	self->pain_debounce_time = level.time + 3;
	gi.sound (self, CHAN_VOICE, sound_pain, 1, ATTN_NORM, 0);

	if (skill->value == 3)
		return;		// no pain anims in nightmare

	if (damage <= 30)
		self->monsterinfo.currentmove = &tank_move_pain1;
	else if (damage <= 60)
		self->monsterinfo.currentmove = &tank_move_pain2;
	else
		self->monsterinfo.currentmove = &tank_move_pain3;
};


//
// attacks
//

void TankBlaster (edict_t *self)
{
	vec3_t	forward, right;
	vec3_t	start;
	vec3_t	end;
	vec3_t	dir;
	int		flash_number;

	if (!self->enemy || !self->enemy->inuse)
		return;

	if (self->s.frame == FRAME_attak110)
		flash_number = MZ2_TANK_BLASTER_1;
	else if (self->s.frame == FRAME_attak113)
		flash_number = MZ2_TANK_BLASTER_2;
	else // (self->s.frame == FRAME_attak116)
		flash_number = MZ2_TANK_BLASTER_3;

	AngleVectors (self->s.angles, forward, right, NULL);
	G_ProjectSource (self->s.origin, monster_flash_offset[flash_number], forward, right, start);
	VectorCopy (self->enemy->s.origin, end);
	end[2] += self->enemy->viewheight;

	// Lazarus fog reduction of accuracy
	if (self->monsterinfo.visibility < FOG_CANSEEGOOD)
	{
		end[0] += crandom() * 640 * (FOG_CANSEEGOOD - self->monsterinfo.visibility);
		end[1] += crandom() * 640 * (FOG_CANSEEGOOD - self->monsterinfo.visibility);
		end[2] += crandom() * 320 * (FOG_CANSEEGOOD - self->monsterinfo.visibility);
	}

	VectorSubtract (end, start, dir);
	monster_fire_blaster (self, start, dir, 30, 800, flash_number, EF_BLASTER, BLASTER_ORANGE);
}	

void TankStrike (edict_t *self)
{
	gi.sound (self, CHAN_WEAPON, sound_strike, 1, ATTN_NORM, 0);
}	

void TankRocket (edict_t *self)
{
	trace_t	trace;
	vec3_t	forward, right;
	vec3_t	start;
	vec3_t	dir;
	vec3_t	vec;
	int		flash_number;
	// Lazarus: Added skill level-dependent rocket speed similar to Rogue pack
	int		rocketSpeed;

	// check if enemy went away
	if (!self->enemy || !self->enemy->inuse)
		return;

	if (self->s.frame == FRAME_attak324)
		flash_number = MZ2_TANK_ROCKET_1;
	else if (self->s.frame == FRAME_attak327)
		flash_number = MZ2_TANK_ROCKET_2;
	else // (self->s.frame == FRAME_attak330)
		flash_number = MZ2_TANK_ROCKET_3;

	AngleVectors (self->s.angles, forward, right, NULL);
	G_ProjectSource (self->s.origin, monster_flash_offset[flash_number], forward, right, start);

	if ((self->spawnflags & SF_MONSTER_SPECIAL))
		rocketSpeed = 400; // Lazarus: Homing rockets are tougher if slow
	else
		rocketSpeed = 500 + (100 * skill->value);

/*	VectorCopy (self->enemy->s.origin, vec);
	vec[2] += self->enemy->viewheight;
	VectorSubtract (vec, start, dir);
	VectorNormalize (dir); */
	// Lazarus: Added homers
	VectorCopy (self->enemy->s.origin, vec);
	if (random() < 0.66 || (start[2] < self->enemy->absmin[2]))
	{
//		gi.dprintf("normal shot\n");
		vec[2] += self->enemy->viewheight;
	}
	else
	{
//		gi.dprintf("shooting at feet!\n");
		vec[2] = self->enemy->absmin[2];
	}

	// Lazarus fog reduction of accuracy
	if (self->monsterinfo.visibility < FOG_CANSEEGOOD)
	{
		vec[0] += crandom() * 640 * (FOG_CANSEEGOOD - self->monsterinfo.visibility);
		vec[1] += crandom() * 640 * (FOG_CANSEEGOOD - self->monsterinfo.visibility);
		vec[2] += crandom() * 320 * (FOG_CANSEEGOOD - self->monsterinfo.visibility);
	}

	VectorSubtract (vec, start, dir);
	// lead target, but not if using homers
	// 20, 35, 50, 65 chance of leading
	// Lazarus: Switched this around from Rogue code... it led target more often
	//          for Easy, which seemed backwards
	if ( (random() < (0.2 + skill->value * 0.15) ) && !(self->spawnflags & SF_MONSTER_SPECIAL))
	{
		float	dist;
		float	time;

		dist = VectorLength (dir);
		time = dist/rocketSpeed;
		VectorMA(vec, time, self->enemy->velocity, vec);
		VectorSubtract(vec, start, dir);
	}

	VectorNormalize(dir);
	// paranoia, make sure we're not shooting a target right next to us
	trace = gi.trace(start, vec3_origin, vec3_origin, vec, self, MASK_SHOT);
	if (trace.ent == self->enemy || trace.ent == world)
	{
		if (trace.fraction > 0.5 || (trace.ent && trace.ent->client))
			monster_fire_rocket (self, start, dir, 50, rocketSpeed, flash_number,
				(self->spawnflags & SF_MONSTER_SPECIAL ? self->enemy : NULL) );
	}
}	

void TankMachineGun (edict_t *self)
{
	vec3_t	dir;
	vec3_t	vec;
	vec3_t	start;
	vec3_t	forward, right;
	int		flash_number;

	// check if enemy went away
	if (!self->enemy || !self->enemy->inuse)
		return;

	flash_number = MZ2_TANK_MACHINEGUN_1 + (self->s.frame - FRAME_attak406);

	AngleVectors (self->s.angles, forward, right, NULL);
	G_ProjectSource (self->s.origin, monster_flash_offset[flash_number], forward, right, start);

	if (self->enemy)
	{
		VectorCopy (self->enemy->s.origin, vec);
		vec[2] += self->enemy->viewheight;

		// Lazarus fog reduction of accuracy
		if (self->monsterinfo.visibility < FOG_CANSEEGOOD)
		{
			vec[0] += crandom() * 640 * (FOG_CANSEEGOOD - self->monsterinfo.visibility);
			vec[1] += crandom() * 640 * (FOG_CANSEEGOOD - self->monsterinfo.visibility);
			vec[2] += crandom() * 320 * (FOG_CANSEEGOOD - self->monsterinfo.visibility);
		}

		VectorSubtract (vec, start, vec);
		vectoangles (vec, vec);
		dir[0] = vec[0];
	}
	else
	{
		dir[0] = 0;
	}
	if (self->s.frame <= FRAME_attak415)
		dir[1] = self->s.angles[1] - 8 * (self->s.frame - FRAME_attak411);
	else
		dir[1] = self->s.angles[1] + 8 * (self->s.frame - FRAME_attak419);
	dir[2] = 0;

	AngleVectors (dir, forward, NULL, NULL);

	monster_fire_bullet (self, start, forward, 20, 4, DEFAULT_BULLET_HSPREAD, DEFAULT_BULLET_VSPREAD, flash_number);
}	


mframe_t tank_frames_attack_blast [] =
{
	ai_charge, 0,	NULL,
	ai_charge, 0,	NULL,
	ai_charge, 0,	NULL,
	ai_charge, 0,	NULL,
	ai_charge, -1,	NULL,
	ai_charge, -2,	NULL,
	ai_charge, -1,	NULL,
	ai_charge, -1,	NULL,
	ai_charge, 0,	NULL,
	ai_charge, 0,	TankBlaster,		// 10
	ai_charge, 0,	NULL,
	ai_charge, 0,	NULL,
	ai_charge, 0,	TankBlaster,
	ai_charge, 0,	NULL,
	ai_charge, 0,	NULL,
	ai_charge, 0,	TankBlaster			// 16
};
mmove_t tank_move_attack_blast = {FRAME_attak101, FRAME_attak116, tank_frames_attack_blast, tank_reattack_blaster};

mframe_t tank_frames_reattack_blast [] =
{
	ai_charge, 0,	NULL,
	ai_charge, 0,	NULL,
	ai_charge, 0,	TankBlaster,
	ai_charge, 0,	NULL,
	ai_charge, 0,	NULL,
	ai_charge, 0,	TankBlaster			// 16
};
mmove_t tank_move_reattack_blast = {FRAME_attak111, FRAME_attak116, tank_frames_reattack_blast, tank_reattack_blaster};

mframe_t tank_frames_attack_post_blast [] =	
{
	ai_move, 0,		NULL,				// 17
	ai_move, 0,		NULL,
	ai_move, 2,		NULL,
	ai_move, 3,		NULL,
	ai_move, 2,		NULL,
	ai_move, -2,	tank_footstep		// 22
};
mmove_t tank_move_attack_post_blast = {FRAME_attak117, FRAME_attak122, tank_frames_attack_post_blast, tank_run};

void tank_reattack_blaster (edict_t *self)
{
	if (skill->value >= 2)
		if (visible (self, self->enemy))
			if (self->enemy->health > 0)
				if (random() <= 0.6)
				{
					self->monsterinfo.currentmove = &tank_move_reattack_blast;
					return;
				}
	self->monsterinfo.currentmove = &tank_move_attack_post_blast;
}


void tank_poststrike (edict_t *self)
{
	self->enemy = NULL;
	tank_run (self);
}

mframe_t tank_frames_attack_strike [] =
{
	ai_move, 3,   NULL,
	ai_move, 2,   NULL,
	ai_move, 2,   NULL,
	ai_move, 1,   NULL,
	ai_move, 6,   NULL,
	ai_move, 7,   NULL,
	ai_move, 9,   tank_footstep,
	ai_move, 2,   NULL,
	ai_move, 1,   NULL,
	ai_move, 2,   NULL,
	ai_move, 2,   tank_footstep,
	ai_move, 2,   NULL,
	ai_move, 0,   NULL,
	ai_move, 0,   NULL,
	ai_move, 0,   NULL,
	ai_move, 0,   NULL,
	ai_move, -2,  NULL,
	ai_move, -2,  NULL,
	ai_move, 0,   tank_windup,
	ai_move, 0,   NULL,
	ai_move, 0,   NULL,
	ai_move, 0,   NULL,
	ai_move, 0,   NULL,
	ai_move, 0,   NULL,
	ai_move, 0,   NULL,
	ai_move, 0,   TankStrike,
	ai_move, 0,   NULL,
	ai_move, -1,  NULL,
	ai_move, -1,  NULL,
	ai_move, -1,  NULL,
	ai_move, -1,  NULL,
	ai_move, -1,  NULL,
	ai_move, -3,  NULL,
	ai_move, -10, NULL,
	ai_move, -10, NULL,
	ai_move, -2,  NULL,
	ai_move, -3,  NULL,
	ai_move, -2,  tank_footstep
};
mmove_t tank_move_attack_strike = {FRAME_attak201, FRAME_attak238, tank_frames_attack_strike, tank_poststrike};

mframe_t tank_frames_attack_pre_rocket [] =
{
	ai_charge, 0,  NULL,
	ai_charge, 0,  NULL,
	ai_charge, 0,  NULL,
	ai_charge, 0,  NULL,
	ai_charge, 0,  NULL,
	ai_charge, 0,  NULL,
	ai_charge, 0,  NULL,
	ai_charge, 0,  NULL,
	ai_charge, 0,  NULL,
	ai_charge, 0,  NULL,			// 10

	ai_charge, 0,  NULL,
	ai_charge, 1,  NULL,
	ai_charge, 2,  NULL,
	ai_charge, 7,  NULL,
	ai_charge, 7,  NULL,
	ai_charge, 7,  tank_footstep,
	ai_charge, 0,  NULL,
	ai_charge, 0,  NULL,
	ai_charge, 0,  NULL,
	ai_charge, 0,  NULL,			// 20

	ai_charge, -3, NULL
};
mmove_t tank_move_attack_pre_rocket = {FRAME_attak301, FRAME_attak321, tank_frames_attack_pre_rocket, tank_doattack_rocket};

mframe_t tank_frames_attack_fire_rocket [] =
{
	ai_charge, -3, NULL,			// Loop Start	22 
	ai_charge, 0,  NULL,
	ai_charge, 0,  TankRocket,		// 24
	ai_charge, 0,  NULL,
	ai_charge, 0,  NULL,
	ai_charge, 0,  TankRocket,
	ai_charge, 0,  NULL,
	ai_charge, 0,  NULL,
	ai_charge, -1, TankRocket		// 30	Loop End
};
mmove_t tank_move_attack_fire_rocket = {FRAME_attak322, FRAME_attak330, tank_frames_attack_fire_rocket, tank_refire_rocket};

mframe_t tank_frames_attack_post_rocket [] =
{	
	ai_charge, 0,  NULL,			// 31
	ai_charge, -1, NULL,
	ai_charge, -1, NULL,
	ai_charge, 0,  NULL,
	ai_charge, 2,  NULL,
	ai_charge, 3,  NULL,
	ai_charge, 4,  NULL,
	ai_charge, 2,  NULL,
	ai_charge, 0,  NULL,
	ai_charge, 0,  NULL,			// 40

	ai_charge, 0,  NULL,
	ai_charge, -9, NULL,
	ai_charge, -8, NULL,
	ai_charge, -7, NULL,
	ai_charge, -1, NULL,
	ai_charge, -1, tank_footstep,
	ai_charge, 0,  NULL,
	ai_charge, 0,  NULL,
	ai_charge, 0,  NULL,
	ai_charge, 0,  NULL,			// 50

	ai_charge, 0,  NULL,
	ai_charge, 0,  NULL,
	ai_charge, 0,  NULL
};
mmove_t tank_move_attack_post_rocket = {FRAME_attak331, FRAME_attak353, tank_frames_attack_post_rocket, tank_run};

mframe_t tank_frames_attack_chain [] =
{
	ai_charge, 0, NULL,
	ai_charge, 0, NULL,
	ai_charge, 0, NULL,
	ai_charge, 0, NULL,
	ai_charge, 0, NULL,
	NULL,      0, TankMachineGun,
	NULL,      0, TankMachineGun,
	NULL,      0, TankMachineGun,
	NULL,      0, TankMachineGun,
	NULL,      0, TankMachineGun,
	NULL,      0, TankMachineGun,
	NULL,      0, TankMachineGun,
	NULL,      0, TankMachineGun,
	NULL,      0, TankMachineGun,
	NULL,      0, TankMachineGun,
	NULL,      0, TankMachineGun,
	NULL,      0, TankMachineGun,
	NULL,      0, TankMachineGun,
	NULL,      0, TankMachineGun,
	NULL,      0, TankMachineGun,
	NULL,      0, TankMachineGun,
	NULL,      0, TankMachineGun,
	NULL,      0, TankMachineGun,
	NULL,      0, TankMachineGun,
	ai_charge, 0, NULL,
	ai_charge, 0, NULL,
	ai_charge, 0, NULL,
	ai_charge, 0, NULL,
	ai_charge, 0, NULL
};
mmove_t tank_move_attack_chain = {FRAME_attak401, FRAME_attak429, tank_frames_attack_chain, tank_run};

void tank_refire_rocket (edict_t *self)
{
	// Only on hard or nightmare
	if ( skill->value >= 2 )
		if (self->enemy->health > 0)
			if (visible(self, self->enemy) )
				if (random() <= 0.4)
				{
					self->monsterinfo.currentmove = &tank_move_attack_fire_rocket;
					return;
				}
	self->monsterinfo.currentmove = &tank_move_attack_post_rocket;
}

void tank_doattack_rocket (edict_t *self)
{
	self->monsterinfo.currentmove = &tank_move_attack_fire_rocket;
}

void tank_attack(edict_t *self)
{
	vec3_t	vec;
	float	range;
	float	r;

	if (!self->enemy || !self->enemy->inuse)
		return;

	if (self->enemy->health < 0)
	{
		self->monsterinfo.currentmove = &tank_move_attack_strike;
		self->monsterinfo.aiflags &= ~AI_BRUTAL;
		return;
	}

	VectorSubtract (self->enemy->s.origin, self->s.origin, vec);
	range = VectorLength (vec);

	r = random();

	if (range <= 125)
	{
		if (r < 0.4)
			self->monsterinfo.currentmove = &tank_move_attack_chain;
		else 
			self->monsterinfo.currentmove = &tank_move_attack_blast;
	}
	else if (range <= 250)
	{
		if (r < 0.5)
			self->monsterinfo.currentmove = &tank_move_attack_chain;
		else
			self->monsterinfo.currentmove = &tank_move_attack_blast;
	}
	else
	{
		if (r < 0.33)
			self->monsterinfo.currentmove = &tank_move_attack_chain;
		else if (r < 0.66)
		{
			self->monsterinfo.currentmove = &tank_move_attack_pre_rocket;
			self->pain_debounce_time = level.time + 5.0;	// no pain for a while
		}
		else
			self->monsterinfo.currentmove = &tank_move_attack_blast;
	}
}


//
// death
//

void tank_dead (edict_t *self)
{
	VectorSet (self->mins, -16, -16, -16);
	VectorSet (self->maxs, 16, 16, -0);
	self->movetype = MOVETYPE_TOSS;
	self->svflags |= SVF_DEADMONSTER;
	self->nextthink = 0;
	gi.linkentity (self);
	M_FlyCheck (self);

	// Lazarus monster fade
	if (world->effects & FX_WORLDSPAWN_CORPSEFADE)
	{
		self->think=FadeDieSink;
		self->nextthink=level.time+corpse_fadetime->value;
	}
}

mframe_t tank_frames_death1 [] =
{
	ai_move, -7,  NULL,
	ai_move, -2,  NULL,
	ai_move, -2,  NULL,
	ai_move, 1,   NULL,
	ai_move, 3,   NULL,
	ai_move, 6,   NULL,
	ai_move, 1,   NULL,
	ai_move, 1,   NULL,
	ai_move, 2,   NULL,
	ai_move, 0,   NULL,
	ai_move, 0,   NULL,
	ai_move, 0,   NULL,
	ai_move, -2,  NULL,
	ai_move, 0,   NULL,
	ai_move, 0,   NULL,
	ai_move, -3,  NULL,
	ai_move, 0,   NULL,
	ai_move, 0,   NULL,
	ai_move, 0,   NULL,
	ai_move, 0,   NULL,
	ai_move, 0,   NULL,
	ai_move, 0,   NULL,
	ai_move, -4,  NULL,
	ai_move, -6,  NULL,
	ai_move, -4,  NULL,
	ai_move, -5,  NULL,
	ai_move, -7,  NULL,
	ai_move, -15, tank_thud,
	ai_move, -5,  NULL,
	ai_move, 0,   NULL,
	ai_move, 0,   NULL,
	ai_move, 0,   NULL
};
mmove_t	tank_move_death = {FRAME_death101, FRAME_death132, tank_frames_death1, tank_dead};

void tank_die (edict_t *self, edict_t *inflictor, edict_t *attacker, int damage, vec3_t point)
{
	int		n;

	self->s.skinnum |= 1;
	if (!(self->fogclip & 2)) //custom bloodtype flag check
		self->blood_type = 3; //sparks and blood

	self->monsterinfo.power_armor_type = POWER_ARMOR_NONE;
// check for gib
	if (self->health <= self->gib_health && !(self->spawnflags & SF_MONSTER_NOGIB))
	{	// Knightmare- more gibs
		gi.sound (self, CHAN_VOICE, gi.soundindex ("misc/udeath.wav"), 1, ATTN_NORM, 0);
		for (n = 0; n < 16; n++)
			ThrowGib (self, "models/objects/gibs/sm_meat/tris.md2", 0, 0, damage, GIB_ORGANIC);
		for (n = 0; n < 16; n++)
			ThrowGib (self, "models/objects/gibs/sm_metal/tris.md2", 0, 0, damage, GIB_METALLIC);
		for (n = 0; n < 8; n++)
			ThrowGib (self, "models/objects/gibs/gear/tris.md2", 0, 0, damage, GIB_METALLIC);
		ThrowGib (self, "models/objects/gibs/chest/tris.md2", 0, 0, damage, GIB_ORGANIC);
		ThrowHead (self, "models/objects/gibs/gear/tris.md2", 0, 0, damage, GIB_METALLIC);
		self->deadflag = DEAD_DEAD;
		return;
	}

	if (self->deadflag == DEAD_DEAD)
		return;

// regular death
	gi.sound (self, CHAN_VOICE, sound_die, 1, ATTN_NORM, 0);
	self->deadflag = DEAD_DEAD;
	self->takedamage = DAMAGE_YES;

	self->monsterinfo.currentmove = &tank_move_death;
	
}


//
// monster_tank
//

/*QUAKED monster_tank (1 .5 0) (-32 -32 -16) (32 32 72) Ambush Trigger_Spawn Sight
*/
/*QUAKED monster_tank_commander (1 .5 0) (-32 -32 -16) (32 32 72) Ambush Trigger_Spawn Sight
*/
void SP_monster_tank (edict_t *self)
{
	if (deathmatch->value)
	{
		G_FreeEdict (self);
		return;
	}

	// Lazarus: special purpose skins
	if (strcmp(self->classname, "monster_tank_commander") == 0)
		self->s.skinnum = 2;
	if ( self->style )
	{
		PatchMonsterModel("models/monsters/tank/tris.md2");
		self->s.skinnum += self->style * 4;
	}

	self->s.modelindex = gi.modelindex ("models/monsters/tank/tris.md2");
	VectorSet (self->mins, -32, -32, -16);
	VectorSet (self->maxs, 32, 32, 72);
	self->movetype = MOVETYPE_STEP;
	self->solid = SOLID_BBOX;

	sound_pain = gi.soundindex ("tank/tnkpain2.wav");
	sound_thud = gi.soundindex ("tank/tnkdeth2.wav");
	sound_idle = gi.soundindex ("tank/tnkidle1.wav");
	sound_die = gi.soundindex ("tank/death.wav");
	sound_step = gi.soundindex ("tank/step.wav");
	sound_windup = gi.soundindex ("tank/tnkatck4.wav");
	sound_strike = gi.soundindex ("tank/tnkatck5.wav");
	sound_sight = gi.soundindex ("tank/sight1.wav");

	gi.soundindex ("tank/tnkatck1.wav");
	gi.soundindex ("tank/tnkatk2a.wav");
	gi.soundindex ("tank/tnkatk2b.wav");
	gi.soundindex ("tank/tnkatk2c.wav");
	gi.soundindex ("tank/tnkatk2d.wav");
	gi.soundindex ("tank/tnkatk2e.wav");
	gi.soundindex ("tank/tnkatck3.wav");

	if (strcmp(self->classname, "monster_tank_commander") == 0)
	{
		// Lazarus: mapper-configurable health
		if (!self->health)
			self->health = 1000;
		if (!self->gib_health)
			self->gib_health = -225;
		self->common_name = "Tank Commander";
	}
	else
	{
		// Lazarus: mapper-configurable health
		if (!self->health)
			self->health = 750;
		if (!self->gib_health)
			self->gib_health = -200;
		self->common_name = "Tank";
	}
	self->class_id = ENTITY_MONSTER_TANK;

	if (!self->mass)
		self->mass = 500;

	self->pain = tank_pain;
	self->die = tank_die;
	self->monsterinfo.stand = tank_stand;
	self->monsterinfo.walk = tank_walk;
	self->monsterinfo.run = tank_run;
	self->monsterinfo.dodge = NULL;
	self->monsterinfo.attack = tank_attack;
	self->monsterinfo.melee = NULL;
	self->monsterinfo.sight = tank_sight;
	self->monsterinfo.idle = tank_idle;

	// Knightmare- added sparks and blood type
	if (!self->blood_type)
		self->blood_type = 2; //sparks
	else
		self->fogclip |= 2; //custom bloodtype flag

	// Lazarus power armor
	if (self->powerarmor) {
		self->monsterinfo.power_armor_type = POWER_ARMOR_SHIELD;
		self->monsterinfo.power_armor_power = self->powerarmor;
	}
	if (!self->monsterinfo.flies)
		self->monsterinfo.flies = 0.05;

	gi.linkentity (self);
	self->monsterinfo.currentmove = &tank_move_stand;
	if (self->health < 0)
	{
		mmove_t	*deathmoves[] = {&tank_move_death,
								 NULL};
		M_SetDeath(self,(mmove_t **)&deathmoves);
	}
	self->monsterinfo.scale = MODEL_SCALE;
	walkmonster_start(self);
}