// Copyright (c) ZeniMax Media Inc.
// Licensed under the GNU General Public License 2.0.
/*
==============================================================================

brain

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

#include "g_local.h"
#include "m_brain.h"

static int sound_chest_open;
static int sound_tentacles_extend;
static int sound_tentacles_retract;
static int sound_death;
static int sound_idle1;
static int sound_idle2;
static int sound_idle3;
static int sound_pain1;
static int sound_pain2;
static int sound_sight;
static int sound_search;
static int sound_melee1;
static int sound_melee2;
static int sound_melee3;

MONSTERINFO_SIGHT(brain_sight) (edict_t *self, edict_t *other) -> void
{
	gi.sound(self, CHAN_VOICE, sound_sight, 1, ATTN_NORM, 0);
}

MONSTERINFO_SEARCH(brain_search) (edict_t *self) -> void
{
	gi.sound(self, CHAN_VOICE, sound_search, 1, ATTN_NORM, 0);
}

void brain_run(edict_t *self);
void brain_dead(edict_t *self);

constexpr spawnflags_t SPAWNFLAG_BRAIN_NO_LASERS = 8_spawnflag;

//
// STAND
//

mframe_t brain_frames_stand[] = {
	{ ai_stand },
	{ ai_stand },
	{ ai_stand },
	{ ai_stand },
	{ ai_stand },
	{ ai_stand },
	{ ai_stand },
	{ ai_stand },
	{ ai_stand },
	{ ai_stand },

	{ ai_stand },
	{ ai_stand },
	{ ai_stand },
	{ ai_stand },
	{ ai_stand },
	{ ai_stand },
	{ ai_stand },
	{ ai_stand },
	{ ai_stand },
	{ ai_stand },

	{ ai_stand },
	{ ai_stand },
	{ ai_stand },
	{ ai_stand },
	{ ai_stand },
	{ ai_stand },
	{ ai_stand },
	{ ai_stand },
	{ ai_stand },
	{ ai_stand }
};
MMOVE_T(brain_move_stand) = { FRAME_stand01, FRAME_stand30, brain_frames_stand, nullptr };

MONSTERINFO_STAND(brain_stand) (edict_t *self) -> void
{
	M_SetAnimation(self, &brain_move_stand);
}

//
// IDLE
//

mframe_t brain_frames_idle[] = {
	{ ai_stand },
	{ ai_stand },
	{ ai_stand },
	{ ai_stand },
	{ ai_stand },
	{ ai_stand },
	{ ai_stand },
	{ ai_stand },
	{ ai_stand },
	{ ai_stand },

	{ ai_stand },
	{ ai_stand },
	{ ai_stand },
	{ ai_stand },
	{ ai_stand },
	{ ai_stand },
	{ ai_stand },
	{ ai_stand },
	{ ai_stand },
	{ ai_stand },

	{ ai_stand },
	{ ai_stand },
	{ ai_stand },
	{ ai_stand },
	{ ai_stand },
	{ ai_stand },
	{ ai_stand },
	{ ai_stand },
	{ ai_stand },
	{ ai_stand }
};
MMOVE_T(brain_move_idle) = { FRAME_stand31, FRAME_stand60, brain_frames_idle, brain_stand };

MONSTERINFO_IDLE(brain_idle) (edict_t *self) -> void
{
	gi.sound(self, CHAN_AUTO, sound_idle3, 1, ATTN_IDLE, 0);
	M_SetAnimation(self, &brain_move_idle);
}

//
// WALK
//
mframe_t brain_frames_walk1[] = {
	{ ai_walk, 7 },
	{ ai_walk, 2 },
	{ ai_walk, 3 },
	{ ai_walk, 3, monster_footstep },
	{ ai_walk, 1 },
	{ ai_walk },
	{ ai_walk },
	{ ai_walk, 9 },
	{ ai_walk, -4 },
	{ ai_walk, -1, monster_footstep },
	{ ai_walk, 2 }
};
MMOVE_T(brain_move_walk1) = { FRAME_walk101, FRAME_walk111, brain_frames_walk1, nullptr };

MONSTERINFO_WALK(brain_walk) (edict_t *self) -> void
{
	M_SetAnimation(self, &brain_move_walk1);
}

#if 0
mframe_t brain_frames_defense[] = {
	{ ai_move },
	{ ai_move },
	{ ai_move },
	{ ai_move },
	{ ai_move },
	{ ai_move },
	{ ai_move },
	{ ai_move },
	{ ai_move }
};
MMOVE_T(brain_move_defense) = { FRAME_defens01, FRAME_defens08, brain_frames_defense, nullptr };
#endif

mframe_t brain_frames_pain3[] = {
	{ ai_move, -2 },
	{ ai_move, 2 },
	{ ai_move, 1 },
	{ ai_move, 3 },
	{ ai_move },
	{ ai_move, -4 }
};
MMOVE_T(brain_move_pain3) = { FRAME_pain301, FRAME_pain306, brain_frames_pain3, brain_run };

mframe_t brain_frames_pain2[] = {
	{ ai_move, -2 },
	{ ai_move },
	{ ai_move },
	{ ai_move },
	{ ai_move },
	{ ai_move, 3 },
	{ ai_move, 1 },
	{ ai_move, -2 }
};
MMOVE_T(brain_move_pain2) = { FRAME_pain201, FRAME_pain208, brain_frames_pain2, brain_run };

mframe_t brain_frames_pain1[] = {
	{ ai_move, -6 },
	{ ai_move, -2 },
	{ ai_move, -6, monster_footstep },
	{ ai_move },
	{ ai_move },
	{ ai_move },
	{ ai_move },
	{ ai_move },
	{ ai_move },
	{ ai_move },
	{ ai_move },
	{ ai_move },
	{ ai_move },
	{ ai_move, 2 },
	{ ai_move },
	{ ai_move, 2 },
	{ ai_move, 1 },
	{ ai_move, 7 },
	{ ai_move },
	{ ai_move, 3, monster_footstep },
	{ ai_move, -1 }
};
MMOVE_T(brain_move_pain1) = { FRAME_pain101, FRAME_pain121, brain_frames_pain1, brain_run };

mframe_t brain_frames_duck[] = {
	{ ai_move },
	{ ai_move, -2, [](edict_t *self) { monster_duck_down(self); monster_footstep(self); } },
	{ ai_move, 17, monster_duck_hold },
	{ ai_move, -3 },
	{ ai_move, -1, monster_duck_up },
	{ ai_move, -5 },
	{ ai_move, -6 },
	{ ai_move, -6, monster_footstep }
};
MMOVE_T(brain_move_duck) = { FRAME_duck01, FRAME_duck08, brain_frames_duck, brain_run };

static void brain_shrink(edict_t *self)
{
	self->maxs[2] = 0;
	self->svflags |= SVF_DEADMONSTER;
	gi.linkentity(self);
}

mframe_t brain_frames_death2[] = {
	{ ai_move },
	{ ai_move, 0, monster_footstep },
	{ ai_move, 0, brain_shrink },
	{ ai_move, 9 },
	{ ai_move }
};
MMOVE_T(brain_move_death2) = { FRAME_death201, FRAME_death205, brain_frames_death2, brain_dead };

mframe_t brain_frames_death1[] = {
	{ ai_move },
	{ ai_move, 0, monster_footstep },
	{ ai_move, -2 },
	{ ai_move, 9, [](edict_t *self) { brain_shrink(self); monster_footstep(self); } },
	{ ai_move },
	{ ai_move },
	{ ai_move },
	{ ai_move, 0, monster_footstep },
	{ ai_move },
	{ ai_move },
	{ ai_move },
	{ ai_move },
	{ ai_move },
	{ ai_move },
	{ ai_move },
	{ ai_move, 0, monster_footstep },
	{ ai_move },
	{ ai_move }
};
MMOVE_T(brain_move_death1) = { FRAME_death101, FRAME_death118, brain_frames_death1, brain_dead };

//
// MELEE
//

void brain_swing_right(edict_t *self)
{
	gi.sound(self, CHAN_BODY, sound_melee1, 1, ATTN_NORM, 0);
}

void brain_hit_right(edict_t *self)
{
	vec3_t aim = { MELEE_DISTANCE, self->maxs[0], 8 };
	if (fire_hit(self, aim, irandom(15, 20), 40))
		gi.sound(self, CHAN_WEAPON, sound_melee3, 1, ATTN_NORM, 0);
	else
		self->monsterinfo.melee_debounce_time = level.time + 3_sec;
}

void brain_swing_left(edict_t *self)
{
	gi.sound(self, CHAN_BODY, sound_melee2, 1, ATTN_NORM, 0);
}

void brain_hit_left(edict_t *self)
{
	vec3_t aim = { MELEE_DISTANCE, self->mins[0], 8 };
	if (fire_hit(self, aim, irandom(15, 20), 40))
		gi.sound(self, CHAN_WEAPON, sound_melee3, 1, ATTN_NORM, 0);
	else
		self->monsterinfo.melee_debounce_time = level.time + 3_sec;
}

mframe_t brain_frames_attack1[] = {
	{ ai_charge, 8 },
	{ ai_charge, 3 },
	{ ai_charge, 5 },
	{ ai_charge, 0, monster_footstep },
	{ ai_charge, -3, brain_swing_right },
	{ ai_charge },
	{ ai_charge, -5 },
	{ ai_charge, -7, brain_hit_right },
	{ ai_charge },
	{ ai_charge, 6, brain_swing_left },
	{ ai_charge, 1 },
	{ ai_charge, 2, brain_hit_left },
	{ ai_charge, -3 },
	{ ai_charge, 6 },
	{ ai_charge, -1 },
	{ ai_charge, -3 },
	{ ai_charge, 2 },
	{ ai_charge, -11, monster_footstep }
};
MMOVE_T(brain_move_attack1) = { FRAME_attak101, FRAME_attak118, brain_frames_attack1, brain_run };

constexpr spawnflags_t SPAWNFLAG_BRAIN_TENTACLES_HIT = 65536_spawnflag;

void brain_chest_open(edict_t *self)
{
	self->spawnflags &= ~SPAWNFLAG_BRAIN_TENTACLES_HIT;
	self->monsterinfo.power_armor_type = IT_NULL;
	gi.sound(self, CHAN_BODY, sound_chest_open, 1, ATTN_NORM, 0);
}

void brain_tentacle_attack(edict_t *self)
{
	vec3_t aim = { MELEE_DISTANCE, 0, 8 };
	if (fire_hit(self, aim, irandom(10, 15), -600))
		self->spawnflags |= SPAWNFLAG_BRAIN_TENTACLES_HIT;
	else
		self->monsterinfo.melee_debounce_time = level.time + 3_sec;
	gi.sound(self, CHAN_WEAPON, sound_tentacles_retract, 1, ATTN_NORM, 0);
}

void brain_chest_closed(edict_t *self)
{
	self->monsterinfo.power_armor_type = IT_ITEM_POWER_SCREEN;
	if (self->spawnflags.has(SPAWNFLAG_BRAIN_TENTACLES_HIT))
	{
		self->spawnflags &= ~SPAWNFLAG_BRAIN_TENTACLES_HIT;
		M_SetAnimation(self, &brain_move_attack1);
	}
}

mframe_t brain_frames_attack2[] = {
	{ ai_charge, 5 },
	{ ai_charge, -4 },
	{ ai_charge, -4 },
	{ ai_charge, -3 },
	{ ai_charge, 0, brain_chest_open },
	{ ai_charge },
	{ ai_charge, 13, brain_tentacle_attack },
	{ ai_charge },
	{ ai_charge, 2 },
	{ ai_charge },
	{ ai_charge, -9, brain_chest_closed },
	{ ai_charge },
	{ ai_charge, 4 },
	{ ai_charge, 3 },
	{ ai_charge, 2 },
	{ ai_charge, -3 },
	{ ai_charge, -6 }
};
MMOVE_T(brain_move_attack2) = { FRAME_attak201, FRAME_attak217, brain_frames_attack2, brain_run };

MONSTERINFO_MELEE(brain_melee) (edict_t *self) -> void
{
	if (frandom() <= 0.5f)
		M_SetAnimation(self, &brain_move_attack1);
	else
		M_SetAnimation(self, &brain_move_attack2);
}

// RAFAEL
static bool brain_tounge_attack_ok(const vec3_t &start, const vec3_t &end)
{
	vec3_t dir, angles;

	// check for max distance
	dir = start - end;
	if (dir.length() > 512)
		return false;

	// check for min/max pitch
	angles = vectoangles(dir);
	if (angles[0] < -180)
		angles[0] += 360;
	if (fabsf(angles[0]) > 30)
		return false;

	return true;
}

void brain_tounge_attack(edict_t *self)
{
	vec3_t	offset, start, f, r, end, dir;
	trace_t tr;
	int		damage;

	AngleVectors(self->s.angles, f, r, nullptr);
	// offset = { 24, 0, 6 };
	offset = { 24, 0, 16 };
	start = M_ProjectFlashSource(self, offset, f, r);

	end = self->enemy->s.origin;
	if (!brain_tounge_attack_ok(start, end))
	{
		end[2] = self->enemy->s.origin[2] + self->enemy->maxs[2] - 8;
		if (!brain_tounge_attack_ok(start, end))
		{
			end[2] = self->enemy->s.origin[2] + self->enemy->mins[2] + 8;
			if (!brain_tounge_attack_ok(start, end))
				return;
		}
	}
	end = self->enemy->s.origin;

	tr = gi.traceline(start, end, self, MASK_PROJECTILE);
	if (tr.ent != self->enemy)
		return;

	damage = 5;
	gi.sound(self, CHAN_WEAPON, sound_tentacles_retract, 1, ATTN_NORM, 0);

	gi.WriteByte(svc_temp_entity);
	gi.WriteByte(TE_PARASITE_ATTACK);
	gi.WriteEntity(self);
	gi.WritePosition(start);
	gi.WritePosition(end);
	gi.multicast(self->s.origin, MULTICAST_PVS, false);

	dir = start - end;
	T_Damage(self->enemy, self, self, dir, self->enemy->s.origin, vec3_origin, damage, 0, DAMAGE_NO_KNOCKBACK, MOD_BRAINTENTACLE);

	// pull the enemy in
	vec3_t forward;
	self->s.origin[2] += 1;
	AngleVectors(self->s.angles, forward, nullptr, nullptr);
	self->enemy->velocity = forward * -1200;
}

// Brian right eye center
constexpr vec3_t brain_reye[] = {
	{ 0.746700f, 0.238370f, 34.167690f },
	{ -1.076390f, 0.238370f, 33.386372f },
	{ -1.335500f, 5.334300f, 32.177170f },
	{ -0.175360f, 8.846370f, 30.635479f },
	{ -2.757590f, 7.804610f, 30.150860f },
	{ -5.575090f, 5.152840f, 30.056160f },
	{ -7.017550f, 3.262470f, 30.552521f },
	{ -7.915740f, 0.638800f, 33.176189f },
	{ -3.915390f, 8.285730f, 33.976349f },
	{ -0.913540f, 10.933030f, 34.141811f },
	{ -0.369900f, 8.923900f, 34.189079f }
};

// Brain left eye center
constexpr vec3_t brain_leye[] = {
	{ -3.364710f, 0.327750f, 33.938381f },
	{ -5.140450f, 0.493480f, 32.659851f },
	{ -5.341980f, 5.646980f, 31.277901f },
	{ -4.134480f, 9.277440f, 29.925621f },
	{ -6.598340f, 6.815090f, 29.322620f },
	{ -8.610840f, 2.529650f, 29.251591f },
	{ -9.231360f, 0.093280f, 29.747959f },
	{ -11.004110f, 1.936930f, 32.395260f },
	{ -7.878310f, 7.648190f, 33.148151f },
	{ -4.947370f, 11.430050f, 33.313610f },
	{ -4.332820f, 9.444570f, 33.526340f }
};

PRETHINK(brain_right_eye_laser_update) (edict_t *laser) -> void
{
	edict_t *self = laser->owner;

	vec3_t start, forward, right, up, dir;

	// check for max distance
	AngleVectors(self->s.angles, forward, right, up);

	// dis is my right eye
	start = self->s.origin + (right * brain_reye[self->s.frame - FRAME_walk101].x);
	start += forward * brain_reye[self->s.frame - FRAME_walk101].y;
	start += up * brain_reye[self->s.frame - FRAME_walk101].z;

	PredictAim(self, self->enemy, start, 0, false, frandom(0.1f, 0.2f), &dir, nullptr);

	laser->s.origin = start;
	laser->movedir = dir;
	gi.linkentity(laser);
}

PRETHINK(brain_left_eye_laser_update) (edict_t *laser) -> void
{
	edict_t *self = laser->owner;

	vec3_t start, forward, right, up, dir;

	// check for max distance
	AngleVectors(self->s.angles, forward, right, up);

	// dis is my right eye
	start = self->s.origin + (right * brain_leye[self->s.frame - FRAME_walk101].x);
	start += forward * brain_leye[self->s.frame - FRAME_walk101].y;
	start += up * brain_leye[self->s.frame - FRAME_walk101].z;

	PredictAim(self, self->enemy, start, 0, false, frandom(0.1f, 0.2f), &dir, nullptr);

	laser->s.origin = start;
	laser->movedir = dir;
	gi.linkentity(laser);
	dabeam_update(laser, false);
}

void brain_laserbeam(edict_t *self)
{
	// dis is my right eye
	monster_fire_dabeam(self, 1, false, brain_right_eye_laser_update);

	// dis is me left eye
	monster_fire_dabeam(self, 1, true, brain_left_eye_laser_update);
}

void brain_laserbeam_reattack(edict_t *self)
{
	if (frandom() < 0.5f)
		if (visible(self, self->enemy))
			if (self->enemy->health > 0)
				self->s.frame = FRAME_walk101;
}

mframe_t brain_frames_attack3[] = {
	{ ai_charge, 5 },
	{ ai_charge, -4 },
	{ ai_charge, -4 },
	{ ai_charge, -3 },
	{ ai_charge, 0, brain_chest_open },
	{ ai_charge, 0, brain_tounge_attack },
	{ ai_charge, 13 },
	{ ai_charge, 0, brain_tentacle_attack },
	{ ai_charge, 2 },
	{ ai_charge, 0, brain_tounge_attack },
	{ ai_charge, -9, brain_chest_closed },
	{ ai_charge },
	{ ai_charge, 4 },
	{ ai_charge, 3 },
	{ ai_charge, 2 },
	{ ai_charge, -3 },
	{ ai_charge, -6 }
};
MMOVE_T(brain_move_attack3) = { FRAME_attak201, FRAME_attak217, brain_frames_attack3, brain_run };

mframe_t brain_frames_attack4[] = {
	{ ai_charge, 9, brain_laserbeam },
	{ ai_charge, 2, brain_laserbeam },
	{ ai_charge, 3, brain_laserbeam },
	{ ai_charge, 3, brain_laserbeam },
	{ ai_charge, 1, brain_laserbeam },
	{ ai_charge, 0, brain_laserbeam },
	{ ai_charge, 0, brain_laserbeam },
	{ ai_charge, 10, brain_laserbeam },
	{ ai_charge, -4, brain_laserbeam },
	{ ai_charge, -1, brain_laserbeam },
	{ ai_charge, 2, brain_laserbeam_reattack }
};
MMOVE_T(brain_move_attack4) = { FRAME_walk101, FRAME_walk111, brain_frames_attack4, brain_run };

// RAFAEL
MONSTERINFO_ATTACK(brain_attack) (edict_t *self) -> void
{
	float r = range_to(self, self->enemy);
	if (r <= RANGE_NEAR)
	{
		if (frandom() < 0.5f)
			M_SetAnimation(self, &brain_move_attack3);
		else if (!self->spawnflags.has(SPAWNFLAG_BRAIN_NO_LASERS))
			M_SetAnimation(self, &brain_move_attack4);
	}
	else if (!self->spawnflags.has(SPAWNFLAG_BRAIN_NO_LASERS))
		M_SetAnimation(self, &brain_move_attack4);
}
// RAFAEL

//
// RUN
//

mframe_t brain_frames_run[] = {
	{ ai_run, 9 },
	{ ai_run, 2 },
	{ ai_run, 3 },
	{ ai_run, 3 },
	{ ai_run, 1 },
	{ ai_run },
	{ ai_run },
	{ ai_run, 10 },
	{ ai_run, -4 },
	{ ai_run, -1 },
	{ ai_run, 2 }
};
MMOVE_T(brain_move_run) = { FRAME_walk101, FRAME_walk111, brain_frames_run, nullptr };

MONSTERINFO_RUN(brain_run) (edict_t *self) -> void
{
	self->monsterinfo.power_armor_type = IT_ITEM_POWER_SCREEN;
	if (self->monsterinfo.aiflags & AI_STAND_GROUND)
		M_SetAnimation(self, &brain_move_stand);
	else
		M_SetAnimation(self, &brain_move_run);
}

PAIN(brain_pain) (edict_t *self, edict_t *other, float kick, int damage, const mod_t &mod) -> void
{
	float r;

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

	self->pain_debounce_time = level.time + 3_sec;

	r = frandom();

	if (r < 0.33f)
		gi.sound(self, CHAN_VOICE, sound_pain1, 1, ATTN_NORM, 0);
	else if (r < 0.66f)
		gi.sound(self, CHAN_VOICE, sound_pain2, 1, ATTN_NORM, 0);
	else
		gi.sound(self, CHAN_VOICE, sound_pain1, 1, ATTN_NORM, 0);
	
	if (!M_ShouldReactToPain(self, mod))
		return; // no pain anims in nightmare

	if (r < 0.33f)
		M_SetAnimation(self, &brain_move_pain1);
	else if (r < 0.66f)
		M_SetAnimation(self, &brain_move_pain2);
	else
		M_SetAnimation(self, &brain_move_pain3);

	// PMM - clear duck flag
	if (self->monsterinfo.aiflags & AI_DUCKED)
		monster_duck_up(self);
}

MONSTERINFO_SETSKIN(brain_setskin) (edict_t *self) -> void
{
	if (self->health < (self->max_health / 2))
		self->s.skinnum = 1;
	else
		self->s.skinnum = 0;
}

void brain_dead(edict_t *self)
{
	self->mins = { -16, -16, -24 };
	self->maxs = { 16, 16, -8 };
	monster_dead(self);
}

DIE(brain_die) (edict_t *self, edict_t *inflictor, edict_t *attacker, int damage, const vec3_t &point, const mod_t &mod) -> void
{
	self->s.effects = EF_NONE;
	self->monsterinfo.power_armor_type = IT_NULL;

	// check for gib
	if (M_CheckGib(self, mod))
	{
		gi.sound(self, CHAN_VOICE, gi.soundindex("misc/udeath.wav"), 1, ATTN_NORM, 0);

		self->s.skinnum /= 2;

		if (self->beam)
		{
			G_FreeEdict(self->beam);
			self->beam = nullptr;
		}
		if (self->beam2)
		{
			G_FreeEdict(self->beam2);
			self->beam2 = nullptr;
		}

		ThrowGibs(self, damage, {
			{ 1, "models/objects/gibs/bone/tris.md2" },
			{ 2, "models/objects/gibs/sm_meat/tris.md2" },
			{ 2, "models/monsters/brain/gibs/arm.md2", GIB_SKINNED | GIB_UPRIGHT },
			{ "models/monsters/brain/gibs/boot.md2", GIB_SKINNED | GIB_UPRIGHT },
			{ "models/monsters/brain/gibs/pelvis.md2", GIB_SKINNED },
			{ "models/monsters/brain/gibs/chest.md2", GIB_SKINNED },
			{ 2, "models/monsters/brain/gibs/door.md2", GIB_SKINNED | GIB_UPRIGHT },
			{ "models/monsters/brain/gibs/head.md2", GIB_SKINNED | GIB_HEAD }
		});
		self->deadflag = true;
		return;
	}

	if (self->deadflag)
		return;

	// regular death
	gi.sound(self, CHAN_VOICE, sound_death, 1, ATTN_NORM, 0);
	self->deadflag = true;
	self->takedamage = true;
	if (frandom() <= 0.5f)
		M_SetAnimation(self, &brain_move_death1);
	else
		M_SetAnimation(self, &brain_move_death2);
}

MONSTERINFO_DUCK(brain_duck) (edict_t *self, gtime_t eta) -> bool
{
	M_SetAnimation(self, &brain_move_duck);

	return true;
}

/*QUAKED monster_brain (1 .5 0) (-16 -16 -24) (16 16 32) Ambush Trigger_Spawn Sight
 */
void SP_monster_brain(edict_t *self)
{
	if ( !M_AllowSpawn( self ) ) {
		G_FreeEdict( self );
		return;
	}

	sound_chest_open = gi.soundindex("brain/brnatck1.wav");
	sound_tentacles_extend = gi.soundindex("brain/brnatck2.wav");
	sound_tentacles_retract = gi.soundindex("brain/brnatck3.wav");
	sound_death = gi.soundindex("brain/brndeth1.wav");
	sound_idle1 = gi.soundindex("brain/brnidle1.wav");
	sound_idle2 = gi.soundindex("brain/brnidle2.wav");
	sound_idle3 = gi.soundindex("brain/brnlens1.wav");
	sound_pain1 = gi.soundindex("brain/brnpain1.wav");
	sound_pain2 = gi.soundindex("brain/brnpain2.wav");
	sound_sight = gi.soundindex("brain/brnsght1.wav");
	sound_search = gi.soundindex("brain/brnsrch1.wav");
	sound_melee1 = gi.soundindex("brain/melee1.wav");
	sound_melee2 = gi.soundindex("brain/melee2.wav");
	sound_melee3 = gi.soundindex("brain/melee3.wav");

	self->movetype = MOVETYPE_STEP;
	self->solid = SOLID_BBOX;
	self->s.modelindex = gi.modelindex("models/monsters/brain/tris.md2");
	
	gi.modelindex("models/monsters/brain/gibs/arm.md2");
	gi.modelindex("models/monsters/brain/gibs/boot.md2");
	gi.modelindex("models/monsters/brain/gibs/chest.md2");
	gi.modelindex("models/monsters/brain/gibs/door.md2");
	gi.modelindex("models/monsters/brain/gibs/head.md2");
	gi.modelindex("models/monsters/brain/gibs/pelvis.md2");

	self->mins = { -16, -16, -24 };
	self->maxs = { 16, 16, 32 };

	self->health = 300 * st.health_multiplier;
	self->gib_health = -150;
	self->mass = 400;

	self->pain = brain_pain;
	self->die = brain_die;

	self->monsterinfo.stand = brain_stand;
	self->monsterinfo.walk = brain_walk;
	self->monsterinfo.run = brain_run;
	// PMM
	self->monsterinfo.dodge = M_MonsterDodge;
	self->monsterinfo.duck = brain_duck;
	self->monsterinfo.unduck = monster_duck_up;
	// pmm
	// RAFAEL
	self->monsterinfo.attack = brain_attack;
	// RAFAEL
	self->monsterinfo.melee = brain_melee;
	self->monsterinfo.sight = brain_sight;
	self->monsterinfo.search = brain_search;
	self->monsterinfo.idle = brain_idle;
	self->monsterinfo.setskin = brain_setskin;
	
	if (!st.was_key_specified("power_armor_type"))
		self->monsterinfo.power_armor_type = IT_ITEM_POWER_SCREEN;
	if (!st.was_key_specified("power_armor_power"))
		self->monsterinfo.power_armor_power = 100;

	gi.linkentity(self);

	M_SetAnimation(self, &brain_move_stand);
	self->monsterinfo.scale = MODEL_SCALE;

	walkmonster_start(self);
}