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

floater

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

#include "g_local.h"
#include "m_float.h"
#include "m_flash.h"

static int sound_attack2;
static int sound_attack3;
static int sound_death1;
static int sound_idle;
static int sound_pain1;
static int sound_pain2;
static int sound_sight;

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

MONSTERINFO_IDLE(floater_idle) (edict_t *self) -> void
{
	gi.sound(self, CHAN_VOICE, sound_idle, 1, ATTN_IDLE, 0);
}

void floater_dead(edict_t *self);
void floater_run(edict_t *self);
void floater_wham(edict_t *self);
void floater_zap(edict_t *self);

void floater_fire_blaster(edict_t *self)
{
	vec3_t	  start;
	vec3_t	  forward, right;
	vec3_t	  end;
	vec3_t	  dir;

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

	AngleVectors(self->s.angles, forward, right, nullptr);
	start = M_ProjectFlashSource(self, monster_flash_offset[MZ2_FLOAT_BLASTER_1], forward, right);

	end = self->enemy->s.origin;
	end[2] += self->enemy->viewheight;
	dir = end - start;
	dir.normalize();

	monster_fire_blaster(self, start, dir, 1, 1000, MZ2_FLOAT_BLASTER_1, (self->s.frame % 4) ? EF_NONE : EF_HYPERBLASTER);
}

mframe_t floater_frames_stand1[] = {
	{ 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 },
	{ 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(floater_move_stand1) = { FRAME_stand101, FRAME_stand152, floater_frames_stand1, nullptr };

mframe_t floater_frames_stand2[] = {
	{ 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 },
	{ 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(floater_move_stand2) = { FRAME_stand201, FRAME_stand252, floater_frames_stand2, nullptr };

mframe_t floater_frames_pop[] = {
	{},
	{},
	{},
	{},
	{},
	{},
	{},
	{},
	{},
	{},
	{},
	{},
	{},
	{},
	{},
	{},
	{},
	{},
	{},
	{},
	{},
	{},
	{},
	{},
	{},
	{},
	{}
};
MMOVE_T(floater_move_pop) = { FRAME_actvat05, FRAME_actvat31, floater_frames_pop, floater_run };

mframe_t floater_frames_disguise[] = {
	{ ai_stand }
};
MMOVE_T(floater_move_disguise) = { FRAME_actvat01, FRAME_actvat01, floater_frames_disguise, nullptr };

MONSTERINFO_STAND(floater_stand) (edict_t *self) -> void
{
	if (self->monsterinfo.active_move == &floater_move_disguise)
		M_SetAnimation(self, &floater_move_disguise);
	else if (frandom() <= 0.5f)
		M_SetAnimation(self, &floater_move_stand1);
	else
		M_SetAnimation(self, &floater_move_stand2);
}

mframe_t floater_frames_attack1[] = {
	{ ai_charge }, // Blaster attack
	{ ai_charge },
	{ ai_charge },
	{ ai_charge, 0, floater_fire_blaster }, // BOOM (0, -25.8, 32.5)	-- LOOP Starts
	{ ai_charge, 0, floater_fire_blaster },
	{ ai_charge, 0, floater_fire_blaster },
	{ ai_charge, 0, floater_fire_blaster },
	{ ai_charge, 0, floater_fire_blaster },
	{ ai_charge, 0, floater_fire_blaster },
	{ ai_charge, 0, floater_fire_blaster },
	{ ai_charge },
	{ ai_charge },
	{ ai_charge },
	{ ai_charge } //							-- LOOP Ends
};
MMOVE_T(floater_move_attack1) = { FRAME_attak101, FRAME_attak114, floater_frames_attack1, floater_run };

// PMM - circle strafe frames
mframe_t floater_frames_attack1a[] = {
	{ ai_charge, 10 }, // Blaster attack
	{ ai_charge, 10 },
	{ ai_charge, 10 },
	{ ai_charge, 10, floater_fire_blaster }, // BOOM (0, -25.8, 32.5)	-- LOOP Starts
	{ ai_charge, 10, floater_fire_blaster },
	{ ai_charge, 10, floater_fire_blaster },
	{ ai_charge, 10, floater_fire_blaster },
	{ ai_charge, 10, floater_fire_blaster },
	{ ai_charge, 10, floater_fire_blaster },
	{ ai_charge, 10, floater_fire_blaster },
	{ ai_charge, 10 },
	{ ai_charge, 10 },
	{ ai_charge, 10 },
	{ ai_charge, 10 } //							-- LOOP Ends
};
MMOVE_T(floater_move_attack1a) = { FRAME_attak101, FRAME_attak114, floater_frames_attack1a, floater_run };
// pmm

mframe_t floater_frames_attack2[] = {
	{ ai_charge }, // Claws
	{ ai_charge },
	{ ai_charge },
	{ ai_charge },
	{ ai_charge },
	{ ai_charge },
	{ ai_charge },
	{ ai_charge },
	{ ai_charge },
	{ ai_charge },
	{ ai_charge },
	{ ai_charge, 0, floater_wham }, // WHAM (0, -45, 29.6)		-- LOOP Starts
	{ ai_charge },
	{ ai_charge },
	{ ai_charge },
	{ ai_charge },
	{ ai_charge },
	{ ai_charge },
	{ ai_charge }, //							-- LOOP Ends
	{ ai_charge },
	{ ai_charge },
	{ ai_charge },
	{ ai_charge },
	{ ai_charge },
	{ ai_charge }
};
MMOVE_T(floater_move_attack2) = { FRAME_attak201, FRAME_attak225, floater_frames_attack2, floater_run };

mframe_t floater_frames_attack3[] = {
	{ ai_charge },
	{ ai_charge },
	{ ai_charge },
	{ ai_charge },
	{ ai_charge },
	{ ai_charge },
	{ ai_charge },
	{ ai_charge },
	{ ai_charge, 0, floater_zap }, //								-- LOOP Starts
	{ ai_charge },
	{ ai_charge },
	{ ai_charge },
	{ ai_charge },
	{ ai_charge },
	{ ai_charge },
	{ ai_charge },
	{ ai_charge },
	{ ai_charge },
	{ ai_charge },
	{ ai_charge },
	{ ai_charge },
	{ ai_charge },
	{ ai_charge },
	{ ai_charge },
	{ ai_charge },
	{ ai_charge },
	{ ai_charge },
	{ ai_charge },
	{ ai_charge }, //								-- LOOP Ends
	{ ai_charge },
	{ ai_charge },
	{ ai_charge },
	{ ai_charge },
	{ ai_charge }
};
MMOVE_T(floater_move_attack3) = { FRAME_attak301, FRAME_attak334, floater_frames_attack3, floater_run };

#if 0
mframe_t floater_frames_death[] = {
	{ ai_move },
	{ ai_move },
	{ ai_move },
	{ ai_move },
	{ ai_move },
	{ ai_move },
	{ ai_move },
	{ ai_move },
	{ ai_move },
	{ ai_move },
	{ ai_move },
	{ ai_move },
	{ ai_move }
};
MMOVE_T(floater_move_death) = { FRAME_death01, FRAME_death13, floater_frames_death, floater_dead };
#endif

mframe_t floater_frames_pain1[] = {
	{ ai_move },
	{ ai_move },
	{ ai_move },
	{ ai_move },
	{ ai_move },
	{ ai_move },
	{ ai_move }
};
MMOVE_T(floater_move_pain1) = { FRAME_pain101, FRAME_pain107, floater_frames_pain1, floater_run };

mframe_t floater_frames_pain2[] = {
	{ ai_move },
	{ ai_move },
	{ ai_move },
	{ ai_move },
	{ ai_move },
	{ ai_move },
	{ ai_move },
	{ ai_move }
};
MMOVE_T(floater_move_pain2) = { FRAME_pain201, FRAME_pain208, floater_frames_pain2, floater_run };

#if 0
mframe_t floater_frames_pain3[] = {
	{ ai_move },
	{ ai_move },
	{ ai_move },
	{ ai_move },
	{ ai_move },
	{ ai_move },
	{ ai_move },
	{ ai_move },
	{ ai_move },
	{ ai_move },
	{ ai_move },
	{ ai_move }
};
MMOVE_T(floater_move_pain3) = { FRAME_pain301, FRAME_pain312, floater_frames_pain3, floater_run };
#endif

mframe_t floater_frames_walk[] = {
	{ ai_walk, 5 },
	{ ai_walk, 5 },
	{ ai_walk, 5 },
	{ ai_walk, 5 },
	{ ai_walk, 5 },
	{ ai_walk, 5 },
	{ ai_walk, 5 },
	{ ai_walk, 5 },
	{ ai_walk, 5 },
	{ ai_walk, 5 },
	{ ai_walk, 5 },
	{ ai_walk, 5 },
	{ ai_walk, 5 },
	{ ai_walk, 5 },
	{ ai_walk, 5 },
	{ ai_walk, 5 },
	{ ai_walk, 5 },
	{ ai_walk, 5 },
	{ ai_walk, 5 },
	{ ai_walk, 5 },
	{ ai_walk, 5 },
	{ ai_walk, 5 },
	{ ai_walk, 5 },
	{ ai_walk, 5 },
	{ ai_walk, 5 },
	{ ai_walk, 5 },
	{ ai_walk, 5 },
	{ ai_walk, 5 },
	{ ai_walk, 5 },
	{ ai_walk, 5 },
	{ ai_walk, 5 },
	{ ai_walk, 5 },
	{ ai_walk, 5 },
	{ ai_walk, 5 },
	{ ai_walk, 5 },
	{ ai_walk, 5 },
	{ ai_walk, 5 },
	{ ai_walk, 5 },
	{ ai_walk, 5 },
	{ ai_walk, 5 },
	{ ai_walk, 5 },
	{ ai_walk, 5 },
	{ ai_walk, 5 },
	{ ai_walk, 5 },
	{ ai_walk, 5 },
	{ ai_walk, 5 },
	{ ai_walk, 5 },
	{ ai_walk, 5 },
	{ ai_walk, 5 },
	{ ai_walk, 5 },
	{ ai_walk, 5 },
	{ ai_walk, 5 }
};
MMOVE_T(floater_move_walk) = { FRAME_stand101, FRAME_stand152, floater_frames_walk, nullptr };

mframe_t floater_frames_run[] = {
	{ ai_run, 13 },
	{ ai_run, 13 },
	{ ai_run, 13 },
	{ ai_run, 13 },
	{ ai_run, 13 },
	{ ai_run, 13 },
	{ ai_run, 13 },
	{ ai_run, 13 },
	{ ai_run, 13 },
	{ ai_run, 13 },
	{ ai_run, 13 },
	{ ai_run, 13 },
	{ ai_run, 13 },
	{ ai_run, 13 },
	{ ai_run, 13 },
	{ ai_run, 13 },
	{ ai_run, 13 },
	{ ai_run, 13 },
	{ ai_run, 13 },
	{ ai_run, 13 },
	{ ai_run, 13 },
	{ ai_run, 13 },
	{ ai_run, 13 },
	{ ai_run, 13 },
	{ ai_run, 13 },
	{ ai_run, 13 },
	{ ai_run, 13 },
	{ ai_run, 13 },
	{ ai_run, 13 },
	{ ai_run, 13 },
	{ ai_run, 13 },
	{ ai_run, 13 },
	{ ai_run, 13 },
	{ ai_run, 13 },
	{ ai_run, 13 },
	{ ai_run, 13 },
	{ ai_run, 13 },
	{ ai_run, 13 },
	{ ai_run, 13 },
	{ ai_run, 13 },
	{ ai_run, 13 },
	{ ai_run, 13 },
	{ ai_run, 13 },
	{ ai_run, 13 },
	{ ai_run, 13 },
	{ ai_run, 13 },
	{ ai_run, 13 },
	{ ai_run, 13 },
	{ ai_run, 13 },
	{ ai_run, 13 },
	{ ai_run, 13 },
	{ ai_run, 13 }
};
MMOVE_T(floater_move_run) = { FRAME_stand101, FRAME_stand152, floater_frames_run, nullptr };

MONSTERINFO_RUN(floater_run) (edict_t *self) -> void
{
	if (self->monsterinfo.active_move == &floater_move_disguise)
		M_SetAnimation(self, &floater_move_pop);
	else if (self->monsterinfo.aiflags & AI_STAND_GROUND)
		M_SetAnimation(self, &floater_move_stand1);
	else
		M_SetAnimation(self, &floater_move_run);
}

MONSTERINFO_WALK(floater_walk) (edict_t *self) -> void
{
	M_SetAnimation(self, &floater_move_walk);
}

void floater_wham(edict_t *self)
{
	constexpr vec3_t aim = { MELEE_DISTANCE, 0, 0 };
	gi.sound(self, CHAN_WEAPON, sound_attack3, 1, ATTN_NORM, 0);

	if (!fire_hit(self, aim, irandom(5, 11), -50))
		self->monsterinfo.melee_debounce_time = level.time + 3_sec;
}

void floater_zap(edict_t *self)
{
	vec3_t forward, right;
	vec3_t origin;
	vec3_t dir;
	vec3_t offset;

	dir = self->enemy->s.origin - self->s.origin;

	AngleVectors(self->s.angles, forward, right, nullptr);
	// FIXME use a flash and replace these two lines with the commented one
	offset = { 18.5f, -0.9f, 10 };
	origin = M_ProjectFlashSource(self, offset, forward, right);

	gi.sound(self, CHAN_WEAPON, sound_attack2, 1, ATTN_NORM, 0);

	// FIXME use the flash, Luke
	gi.WriteByte(svc_temp_entity);
	gi.WriteByte(TE_SPLASH);
	gi.WriteByte(32);
	gi.WritePosition(origin);
	gi.WriteDir(dir);
	gi.WriteByte(SPLASH_SPARKS);
	gi.multicast(origin, MULTICAST_PVS, false);

	T_Damage(self->enemy, self, self, dir, self->enemy->s.origin, vec3_origin, irandom(5, 11), -10, DAMAGE_ENERGY, MOD_UNKNOWN);
}

MONSTERINFO_ATTACK(floater_attack) (edict_t *self) -> void
{
	float chance = 0.5f;

	if (frandom() > chance)
	{
		self->monsterinfo.attack_state = AS_STRAIGHT;
		M_SetAnimation(self, &floater_move_attack1);
	}
	else // circle strafe
	{
		if (frandom() <= 0.5f) // switch directions
			self->monsterinfo.lefty = !self->monsterinfo.lefty;
		self->monsterinfo.attack_state = AS_SLIDING;
		M_SetAnimation(self, &floater_move_attack1a);
	}
}

MONSTERINFO_MELEE(floater_melee) (edict_t *self) -> void
{
	if (frandom() < 0.5f)
		M_SetAnimation(self, &floater_move_attack3);
	else
		M_SetAnimation(self, &floater_move_attack2);
}

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

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

	// no pain anims if poppin'
	if (self->monsterinfo.active_move == &floater_move_disguise ||
		self->monsterinfo.active_move == &floater_move_pop)
		return;

	n = irandom(3);
	if (n == 0)
		gi.sound(self, CHAN_VOICE, sound_pain1, 1, ATTN_NORM, 0);
	else
		gi.sound(self, CHAN_VOICE, sound_pain2, 1, ATTN_NORM, 0);

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

	if (!M_ShouldReactToPain(self, mod))
		return; // no pain anims in nightmare

	if (n == 0)
		M_SetAnimation(self, &floater_move_pain1);
	else
		M_SetAnimation(self, &floater_move_pain2);
}

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

void floater_dead(edict_t *self)
{
	self->mins = { -16, -16, -24 };
	self->maxs = { 16, 16, -8 };
	self->movetype = MOVETYPE_TOSS;
	self->svflags |= SVF_DEADMONSTER;
	self->nextthink = 0_ms;
	gi.linkentity(self);
}

DIE(floater_die) (edict_t *self, edict_t *inflictor, edict_t *attacker, int damage, const vec3_t &point, const mod_t &mod) -> void
{
	gi.sound(self, CHAN_VOICE, sound_death1, 1, ATTN_NORM, 0);

	gi.WriteByte(svc_temp_entity);
	gi.WriteByte(TE_EXPLOSION1);
	gi.WritePosition(self->s.origin);
	gi.multicast(self->s.origin, MULTICAST_PHS, false);

	self->s.skinnum /= 2;

	ThrowGibs(self, 55, {
		{ 2, "models/objects/gibs/sm_metal/tris.md2" },
		{ 3, "models/objects/gibs/sm_meat/tris.md2" },
		{ "models/monsters/float/gibs/piece.md2", GIB_SKINNED },
		{ "models/monsters/float/gibs/gun.md2", GIB_SKINNED },
		{ "models/monsters/float/gibs/base.md2", GIB_SKINNED },
		{ "models/monsters/float/gibs/jar.md2", GIB_SKINNED | GIB_HEAD }
	});
}

static void float_set_fly_parameters(edict_t *self)
{
	self->monsterinfo.fly_thrusters = false;
	self->monsterinfo.fly_acceleration = 10.f;
	self->monsterinfo.fly_speed = 100.f;
	// Technician gets in closer because he has two melee attacks
	self->monsterinfo.fly_min_distance = 20.f;
	self->monsterinfo.fly_max_distance = 200.f;
}

constexpr spawnflags_t SPAWNFLAG_FLOATER_DISGUISE = 8_spawnflag;

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

	sound_attack2 = gi.soundindex("floater/fltatck2.wav");
	sound_attack3 = gi.soundindex("floater/fltatck3.wav");
	sound_death1 = gi.soundindex("floater/fltdeth1.wav");
	sound_idle = gi.soundindex("floater/fltidle1.wav");
	sound_pain1 = gi.soundindex("floater/fltpain1.wav");
	sound_pain2 = gi.soundindex("floater/fltpain2.wav");
	sound_sight = gi.soundindex("floater/fltsght1.wav");

	gi.soundindex("floater/fltatck1.wav");

	self->monsterinfo.engine_sound = gi.soundindex("floater/fltsrch1.wav");

	self->movetype = MOVETYPE_STEP;
	self->solid = SOLID_BBOX;
	self->s.modelindex = gi.modelindex("models/monsters/float/tris.md2");

	gi.modelindex("models/monsters/float/gibs/base.md2");
	gi.modelindex("models/monsters/float/gibs/gun.md2");
	gi.modelindex("models/monsters/float/gibs/jar.md2");
	gi.modelindex("models/monsters/float/gibs/piece.md2");

	self->mins = { -24, -24, -24 };
	self->maxs = { 24, 24, 48 };

	self->health = 200 * st.health_multiplier;
	self->gib_health = -80;
	self->mass = 300;

	self->pain = floater_pain;
	self->die = floater_die;

	self->monsterinfo.stand = floater_stand;
	self->monsterinfo.walk = floater_walk;
	self->monsterinfo.run = floater_run;
	self->monsterinfo.attack = floater_attack;
	self->monsterinfo.melee = floater_melee;
	self->monsterinfo.sight = floater_sight;
	self->monsterinfo.idle = floater_idle;
	self->monsterinfo.setskin = floater_setskin;

	gi.linkentity(self);

	if (self->spawnflags.has(SPAWNFLAG_FLOATER_DISGUISE))
		M_SetAnimation(self, &floater_move_disguise);
	else if (frandom() <= 0.5f)
		M_SetAnimation(self, &floater_move_stand1);
	else
		M_SetAnimation(self, &floater_move_stand2);

	self->monsterinfo.scale = MODEL_SCALE;

	self->monsterinfo.aiflags |= AI_ALTERNATE_FLY;
	float_set_fly_parameters(self);

	flymonster_start(self);
}