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

#include "../../header/local.h"
#include "flyer.h"

qboolean visible(edict_t *self, edict_t *other);

static int nextmove; /* Used for start/stop frames */
static int sound_sight;
static int sound_idle;
static int sound_pain1;
static int sound_pain2;
static int sound_slash;
static int sound_sproing;
static int sound_die;

void flyer_check_melee(edict_t *self);
void flyer_loop_melee(edict_t *self);
void flyer_melee(edict_t *self);
void flyer_setstart(edict_t *self);
void flyer_stand(edict_t *self);
void flyer_nextmove(edict_t *self);

void
flyer_sight(edict_t *self, edict_t *other /* unused */)
{
  	if (!self)
	{
		return;
	}

	gi.sound(self, CHAN_VOICE, sound_sight, 1, ATTN_NORM, 0);
}

void
flyer_idle(edict_t *self)
{
  	if (!self)
	{
		return;
	}

	gi.sound(self, CHAN_VOICE, sound_idle, 1, ATTN_IDLE, 0);
}

void
flyer_pop_blades(edict_t *self)
{
  	if (!self)
	{
		return;
	}

	gi.sound(self, CHAN_VOICE, sound_sproing, 1, ATTN_NORM, 0);
}

mframe_t flyer_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},
	{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 flyer_move_stand = {
	FRAME_stand01,
   	FRAME_stand45,
   	flyer_frames_stand,
   	NULL
};

mframe_t flyer_frames_walk[] = {
	{ai_walk, 5, NULL},
	{ai_walk, 5, NULL},
	{ai_walk, 5, NULL},
	{ai_walk, 5, NULL},
	{ai_walk, 5, NULL},
	{ai_walk, 5, NULL},
	{ai_walk, 5, NULL},
	{ai_walk, 5, NULL},
	{ai_walk, 5, NULL},
	{ai_walk, 5, NULL},
	{ai_walk, 5, NULL},
	{ai_walk, 5, NULL},
	{ai_walk, 5, NULL},
	{ai_walk, 5, NULL},
	{ai_walk, 5, NULL},
	{ai_walk, 5, NULL},
	{ai_walk, 5, NULL},
	{ai_walk, 5, NULL},
	{ai_walk, 5, NULL},
	{ai_walk, 5, NULL},
	{ai_walk, 5, NULL},
	{ai_walk, 5, NULL},
	{ai_walk, 5, NULL},
	{ai_walk, 5, NULL},
	{ai_walk, 5, NULL},
	{ai_walk, 5, NULL},
	{ai_walk, 5, NULL},
	{ai_walk, 5, NULL},
	{ai_walk, 5, NULL},
	{ai_walk, 5, NULL},
	{ai_walk, 5, NULL},
	{ai_walk, 5, NULL},
	{ai_walk, 5, NULL},
	{ai_walk, 5, NULL},
	{ai_walk, 5, NULL},
	{ai_walk, 5, NULL},
	{ai_walk, 5, NULL},
	{ai_walk, 5, NULL},
	{ai_walk, 5, NULL},
	{ai_walk, 5, NULL},
	{ai_walk, 5, NULL},
	{ai_walk, 5, NULL},
	{ai_walk, 5, NULL},
	{ai_walk, 5, NULL},
	{ai_walk, 5, NULL}
};

mmove_t flyer_move_walk = {
	FRAME_stand01,
   	FRAME_stand45,
   	flyer_frames_walk,
   	NULL
};

mframe_t flyer_frames_run[] = {
	{ai_run, 10, NULL},
	{ai_run, 10, NULL},
	{ai_run, 10, NULL},
	{ai_run, 10, NULL},
	{ai_run, 10, NULL},
	{ai_run, 10, NULL},
	{ai_run, 10, NULL},
	{ai_run, 10, NULL},
	{ai_run, 10, NULL},
	{ai_run, 10, NULL},
	{ai_run, 10, NULL},
	{ai_run, 10, NULL},
	{ai_run, 10, NULL},
	{ai_run, 10, NULL},
	{ai_run, 10, NULL},
	{ai_run, 10, NULL},
	{ai_run, 10, NULL},
	{ai_run, 10, NULL},
	{ai_run, 10, NULL},
	{ai_run, 10, NULL},
	{ai_run, 10, NULL},
	{ai_run, 10, NULL},
	{ai_run, 10, NULL},
	{ai_run, 10, NULL},
	{ai_run, 10, NULL},
	{ai_run, 10, NULL},
	{ai_run, 10, NULL},
	{ai_run, 10, NULL},
	{ai_run, 10, NULL},
	{ai_run, 10, NULL},
	{ai_run, 10, NULL},
	{ai_run, 10, NULL},
	{ai_run, 10, NULL},
	{ai_run, 10, NULL},
	{ai_run, 10, NULL},
	{ai_run, 10, NULL},
	{ai_run, 10, NULL},
	{ai_run, 10, NULL},
	{ai_run, 10, NULL},
	{ai_run, 10, NULL},
	{ai_run, 10, NULL},
	{ai_run, 10, NULL},
	{ai_run, 10, NULL},
	{ai_run, 10, NULL},
	{ai_run, 10, NULL}
};

mmove_t flyer_move_run = {
	FRAME_stand01,
   	FRAME_stand45,
   	flyer_frames_run,
   	NULL
};

void
flyer_run(edict_t *self)
{
  	if (!self)
	{
		return;
	}

	if (self->monsterinfo.aiflags & AI_STAND_GROUND)
	{
		self->monsterinfo.currentmove = &flyer_move_stand;
	}
	else
	{
		self->monsterinfo.currentmove = &flyer_move_run;
	}
}

void
flyer_walk(edict_t *self)
{
  	if (!self)
	{
		return;
	}

	self->monsterinfo.currentmove = &flyer_move_walk;
}

void
flyer_stand(edict_t *self)
{
  	if (!self)
	{
		return;
	}

	self->monsterinfo.currentmove = &flyer_move_stand;
}

mframe_t flyer_frames_start[] = {
	{ai_move, 0, NULL},
	{ai_move, 0, NULL},
	{ai_move, 0, NULL},
	{ai_move, 0, NULL},
	{ai_move, 0, NULL},
	{ai_move, 0, flyer_nextmove}
};

mmove_t flyer_move_start = {
	FRAME_start01,
   	FRAME_start06,
   	flyer_frames_start,
   	NULL
};

mframe_t flyer_frames_stop[] = {
	{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, flyer_nextmove}
};

mmove_t flyer_move_stop = {
	FRAME_stop01,
   	FRAME_stop07,
   	flyer_frames_stop,
   	NULL
};

void
flyer_stop(edict_t *self)
{
  	if (!self)
	{
		return;
	}

	self->monsterinfo.currentmove = &flyer_move_stop;
}

void
flyer_start(edict_t *self)
{
  	if (!self)
	{
		return;
	}

	self->monsterinfo.currentmove = &flyer_move_start;
}

mframe_t flyer_frames_rollright[] = {
	{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, NULL},
	{ai_move, 0, NULL},
	{ai_move, 0, NULL}
};

mmove_t flyer_move_rollright = {
	FRAME_rollr01,
   	FRAME_rollr09,
   	flyer_frames_rollright,
   	NULL
};

mframe_t flyer_frames_rollleft[] = {
	{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, NULL},
	{ai_move, 0, NULL},
	{ai_move, 0, NULL}
};

mmove_t flyer_move_rollleft = {
	FRAME_rollf01,
   	FRAME_rollf09,
   	flyer_frames_rollleft,
   	NULL
};

mframe_t flyer_frames_pain3[] = {
	{ai_move, 0, NULL},
	{ai_move, 0, NULL},
	{ai_move, 0, NULL},
	{ai_move, 0, NULL}
};

mmove_t flyer_move_pain3 = {
	FRAME_pain301,
   	FRAME_pain304,
   	flyer_frames_pain3,
   	flyer_run
};

mframe_t flyer_frames_pain2[] = {
	{ai_move, 0, NULL},
	{ai_move, 0, NULL},
	{ai_move, 0, NULL},
	{ai_move, 0, NULL}
};

mmove_t flyer_move_pain2 = {
	FRAME_pain201,
   	FRAME_pain204,
   	flyer_frames_pain2,
   	flyer_run
};

mframe_t flyer_frames_pain1[] = {
	{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, NULL},
	{ai_move, 0, NULL},
	{ai_move, 0, NULL}
};

mmove_t flyer_move_pain1 = {
	FRAME_pain101,
   	FRAME_pain109,
   	flyer_frames_pain1,
   	flyer_run
};

mframe_t flyer_frames_defense[] = {
	{ai_move, 0, NULL},
	{ai_move, 0, NULL},
	{ai_move, 0, NULL}, /* Hold this frame */
	{ai_move, 0, NULL},
	{ai_move, 0, NULL},
	{ai_move, 0, NULL}
};

mmove_t flyer_move_defense = {
	FRAME_defens01,
   	FRAME_defens06,
   	flyer_frames_defense,
   	NULL
};

mframe_t flyer_frames_bankright[] = {
	{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, NULL}
};

mmove_t flyer_move_bankright = {
	FRAME_bankr01,
   	FRAME_bankr07,
   	flyer_frames_bankright,
   	NULL
};

mframe_t flyer_frames_bankleft[] = {
	{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, NULL}
};

mmove_t flyer_move_bankleft = {
	FRAME_bankl01,
   	FRAME_bankl07,
   	flyer_frames_bankleft,
   	NULL
};

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

  	if (!self)
	{
		return;
	}

	if ((self->s.frame == FRAME_attak204) ||
		(self->s.frame == FRAME_attak207) || (self->s.frame == FRAME_attak210))
	{
		effect = EF_HYPERBLASTER;
	}
	else
	{
		effect = 0;
	}

	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;
	VectorSubtract(end, start, dir);

	monster_fire_blaster(self, start, dir, 1, 1000, flash_number, effect);
}

void
flyer_fireleft(edict_t *self)
{
  	if (!self)
	{
		return;
	}

	flyer_fire(self, MZ2_FLYER_BLASTER_1);
}

void
flyer_fireright(edict_t *self)
{
  	if (!self)
	{
		return;
	}

	flyer_fire(self, MZ2_FLYER_BLASTER_2);
}

mframe_t flyer_frames_attack2[] = {
	{ai_charge, 0, NULL},
	{ai_charge, 0, NULL},
	{ai_charge, 0, NULL},
	{ai_charge, -10, flyer_fireleft}, /* left gun */
	{ai_charge, -10, flyer_fireright}, /* right gun */
	{ai_charge, -10, flyer_fireleft}, /* left gun */
	{ai_charge, -10, flyer_fireright}, /* right gun */
	{ai_charge, -10, flyer_fireleft}, /* left gun */
	{ai_charge, -10, flyer_fireright}, /* right gun */
	{ai_charge, -10, flyer_fireleft}, /* left gun */
	{ai_charge, -10, flyer_fireright}, /* right gun */
	{ai_charge, 0, NULL},
	{ai_charge, 0, NULL},
	{ai_charge, 0, NULL},
	{ai_charge, 0, NULL},
	{ai_charge, 0, NULL},
	{ai_charge, 0, NULL}
};

mmove_t flyer_move_attack2 = {
	FRAME_attak201,
   	FRAME_attak217,
   	flyer_frames_attack2,
   	flyer_run
};

void
flyer_slash_left(edict_t *self)
{
	vec3_t aim;

  	if (!self)
	{
		return;
	}

	VectorSet(aim, MELEE_DISTANCE, self->mins[0], 0);
	fire_hit(self, aim, 5, 0);
	gi.sound(self, CHAN_WEAPON, sound_slash, 1, ATTN_NORM, 0);
}

void
flyer_slash_right(edict_t *self)
{
	vec3_t aim;

  	if (!self)
	{
		return;
	}

	VectorSet(aim, MELEE_DISTANCE, self->maxs[0], 0);
	fire_hit(self, aim, 5, 0);
	gi.sound(self, CHAN_WEAPON, sound_slash, 1, ATTN_NORM, 0);
}

mframe_t flyer_frames_start_melee[] = {
	{ai_charge, 0, flyer_pop_blades},
	{ai_charge, 0, NULL},
	{ai_charge, 0, NULL},
	{ai_charge, 0, NULL},
	{ai_charge, 0, NULL},
	{ai_charge, 0, NULL}
};

mmove_t flyer_move_start_melee = {
	FRAME_attak101,
   	FRAME_attak106,
   	flyer_frames_start_melee,
   	flyer_loop_melee
};

mframe_t flyer_frames_end_melee[] = {
	{ai_charge, 0, NULL},
	{ai_charge, 0, NULL},
	{ai_charge, 0, NULL}
};

mmove_t flyer_move_end_melee = {
	FRAME_attak119,
   	FRAME_attak121,
   	flyer_frames_end_melee,
   	flyer_run
};

mframe_t flyer_frames_loop_melee[] = {
	{ai_charge, 0, NULL}, /* Loop Start */
	{ai_charge, 0, NULL},
	{ai_charge, 0, flyer_slash_left}, /* Left Wing Strike */
	{ai_charge, 0, NULL},
	{ai_charge, 0, NULL},
	{ai_charge, 0, NULL},
	{ai_charge, 0, NULL},
	{ai_charge, 0, flyer_slash_right}, /* Right Wing Strike */
	{ai_charge, 0, NULL},
	{ai_charge, 0, NULL},
	{ai_charge, 0, NULL},
	{ai_charge, 0, NULL} /* Loop Ends */
};

mmove_t flyer_move_loop_melee = {
	FRAME_attak107,
   	FRAME_attak118,
   	flyer_frames_loop_melee,
   	flyer_check_melee
};

void
flyer_loop_melee(edict_t *self)
{
  	if (!self)
	{
		return;
	}

	self->monsterinfo.currentmove = &flyer_move_loop_melee;
}

void
flyer_attack(edict_t *self)
{
  	if (!self)
	{
		return;
	}

	self->monsterinfo.currentmove = &flyer_move_attack2;
}

void
flyer_setstart(edict_t *self)
{
  	if (!self)
	{
		return;
	}

	nextmove = ACTION_run;
	self->monsterinfo.currentmove = &flyer_move_start;
}

void
flyer_nextmove(edict_t *self)
{
  	if (!self)
	{
		return;
	}

	if (nextmove == ACTION_attack1)
	{
		self->monsterinfo.currentmove = &flyer_move_start_melee;
	}
	else if (nextmove == ACTION_attack2)
	{
		self->monsterinfo.currentmove = &flyer_move_attack2;
	}
	else if (nextmove == ACTION_run)
	{
		self->monsterinfo.currentmove = &flyer_move_run;
	}
}

void
flyer_melee(edict_t *self)
{
  	if (!self)
	{
		return;
	}

	self->monsterinfo.currentmove = &flyer_move_start_melee;
}

void
flyer_check_melee(edict_t *self)
{
  	if (!self)
	{
		return;
	}

	if (range(self, self->enemy) == RANGE_MELEE)
	{
		if (random() <= 0.8)
		{
			self->monsterinfo.currentmove = &flyer_move_loop_melee;
		}
		else
		{
			self->monsterinfo.currentmove = &flyer_move_end_melee;
		}
	}
	else
	{
		self->monsterinfo.currentmove = &flyer_move_end_melee;
	}
}

void
flyer_pain(edict_t *self, edict_t *other /* unused */,
	   	float kick /* unused */, int damage)
{
	int n;

  	if (!self)
	{
		return;
	}

	if (self->health < (self->max_health / 2))
	{
		self->s.skinnum = 1;
	}

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

	self->pain_debounce_time = level.time + 3;

	if (skill->value == SKILL_HARDPLUS)
	{
		return; /* no pain anims in nightmare */
	}

	n = rand() % 3;

	if (n == 0)
	{
		gi.sound(self, CHAN_VOICE, sound_pain1, 1, ATTN_NORM, 0);
		self->monsterinfo.currentmove = &flyer_move_pain1;
	}
	else if (n == 1)
	{
		gi.sound(self, CHAN_VOICE, sound_pain2, 1, ATTN_NORM, 0);
		self->monsterinfo.currentmove = &flyer_move_pain2;
	}
	else
	{
		gi.sound(self, CHAN_VOICE, sound_pain1, 1, ATTN_NORM, 0);
		self->monsterinfo.currentmove = &flyer_move_pain3;
	}
}

void
flyer_die(edict_t *self, edict_t *inflictor /* unused */,
		edict_t *attacker /* unused */, int damage /* unused */,
		vec3_t point /* unused */)
{
  	if (!self)
	{
		return;
	}

	gi.sound(self, CHAN_VOICE, sound_die, 1, ATTN_NORM, 0);
	BecomeExplosion1(self);
}

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

	if (deathmatch->value)
	{
		G_FreeEdict(self);
		return;
	}

	sound_sight = gi.soundindex("flyer/flysght1.wav");
	sound_idle = gi.soundindex("flyer/flysrch1.wav");
	sound_pain1 = gi.soundindex("flyer/flypain1.wav");
	sound_pain2 = gi.soundindex("flyer/flypain2.wav");
	sound_slash = gi.soundindex("flyer/flyatck2.wav");
	sound_sproing = gi.soundindex("flyer/flyatck1.wav");
	sound_die = gi.soundindex("flyer/flydeth1.wav");

	gi.soundindex("flyer/flyatck3.wav");

	self->s.modelindex = gi.modelindex("models/monsters/flyer/tris.md2");
	VectorSet(self->mins, -16, -16, -24);
	VectorSet(self->maxs, 16, 16, 32);
	self->movetype = MOVETYPE_STEP;
	self->solid = SOLID_BBOX;

	self->s.sound = gi.soundindex("flyer/flyidle1.wav");

	self->health = 50;
	self->mass = 50;

	self->pain = flyer_pain;
	self->die = flyer_die;

	self->monsterinfo.stand = flyer_stand;
	self->monsterinfo.walk = flyer_walk;
	self->monsterinfo.run = flyer_run;
	self->monsterinfo.attack = flyer_attack;
	self->monsterinfo.melee = flyer_melee;
	self->monsterinfo.sight = flyer_sight;
	self->monsterinfo.idle = flyer_idle;

	gi.linkentity(self);

	self->monsterinfo.currentmove = &flyer_move_stand;
	self->monsterinfo.scale = MODEL_SCALE;

	flymonster_start(self);
}