/*
 * Copyright (C) 1997-2001 Id Software, Inc.
 *
 * This program 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.
 *
 * 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, write to the Free Software
 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
 * 02111-1307, USA.
 *
 * =======================================================================
 *
 * Icarus.
 *
 * =======================================================================
 */

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

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

static int sound_pain1;
static int sound_pain2;
static int sound_death1;
static int sound_death2;
static int sound_sight;
static int sound_search1;
static int sound_search2;

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

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

void
hover_search(edict_t *self)

{
	if (random() < 0.5)
	{
		gi.sound(self, CHAN_VOICE, sound_search1, 1, ATTN_NORM, 0);
	}
	else
	{
		gi.sound(self, CHAN_VOICE, sound_search2, 1, ATTN_NORM, 0);
	}
}

void hover_run(edict_t *self);
void hover_stand(edict_t *self);
void hover_dead(edict_t *self);
void hover_attack(edict_t *self);
void hover_reattack(edict_t *self);
void hover_fire_blaster(edict_t *self);
void hover_die(edict_t *self, edict_t *inflictor, edict_t *attacker,
		int damage, vec3_t point);

static mframe_t hover_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 hover_move_stand =
{
	FRAME_stand01,
	FRAME_stand30,
	hover_frames_stand,
	NULL
};

static mframe_t hover_frames_stop1[] = {
	{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 hover_move_stop1 =
{
	FRAME_stop101,
	FRAME_stop109,
	hover_frames_stop1,
	NULL
};

static mframe_t hover_frames_stop2[] = {
	{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 hover_move_stop2 =
{
	FRAME_stop201,
	FRAME_stop208,
   	hover_frames_stop2,
   	NULL
};

static mframe_t hover_frames_takeoff[] = {
	{ai_move, 0, NULL},
	{ai_move, -2, NULL},
	{ai_move, 5, NULL},
	{ai_move, -1, NULL},
	{ai_move, 1, NULL},
	{ai_move, 0, NULL},
	{ai_move, 0, NULL},
	{ai_move, -1, NULL},
	{ai_move, -1, NULL},
	{ai_move, -1, NULL},
	{ai_move, 0, NULL},
	{ai_move, 2, NULL},
	{ai_move, 2, NULL},
	{ai_move, 1, NULL},
	{ai_move, 1, NULL},
	{ai_move, -6, NULL},
	{ai_move, -9, NULL},
	{ai_move, 1, NULL},
	{ai_move, 0, NULL},
	{ai_move, 2, NULL},
	{ai_move, 2, NULL},
	{ai_move, 1, NULL},
	{ai_move, 1, NULL},
	{ai_move, 1, NULL},
	{ai_move, 2, NULL},
	{ai_move, 0, NULL},
	{ai_move, 2, NULL},
	{ai_move, 3, NULL},
	{ai_move, 2, NULL},
	{ai_move, 0, NULL}
};

mmove_t hover_move_takeoff =
{
	FRAME_takeof01,
   	FRAME_takeof30,
   	hover_frames_takeoff,
   	NULL
};

static mframe_t hover_frames_pain3[] = {
	{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 hover_move_pain3 =
{
	FRAME_pain301,
   	FRAME_pain309,
	hover_frames_pain3,
   	hover_run
};

static mframe_t hover_frames_pain2[] = {
	{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},
	{ai_move, 0, NULL},
	{ai_move, 0, NULL},
	{ai_move, 0, NULL}
};

mmove_t hover_move_pain2 =
{
	FRAME_pain201,
	FRAME_pain212,
   	hover_frames_pain2,
   	hover_run
};

static mframe_t hover_frames_pain1[] = {
	{ai_move, 0, NULL},
	{ai_move, 0, NULL},
	{ai_move, 2, NULL},
	{ai_move, -8, NULL},
	{ai_move, -4, NULL},
	{ai_move, -6, NULL},
	{ai_move, -4, NULL},
	{ai_move, -3, NULL},
	{ai_move, 1, NULL},
	{ai_move, 0, NULL},
	{ai_move, 0, NULL},
	{ai_move, 0, NULL},
	{ai_move, 3, NULL},
	{ai_move, 1, NULL},
	{ai_move, 0, NULL},
	{ai_move, 2, NULL},
	{ai_move, 3, NULL},
	{ai_move, 2, NULL},
	{ai_move, 7, NULL},
	{ai_move, 1, NULL},
	{ai_move, 0, NULL},
	{ai_move, 0, NULL},
	{ai_move, 2, NULL},
	{ai_move, 0, NULL},
	{ai_move, 0, NULL},
	{ai_move, 5, NULL},
	{ai_move, 3, NULL},
	{ai_move, 4, NULL}
};

mmove_t hover_move_pain1 =
{
	FRAME_pain101,
   	FRAME_pain128,
   	hover_frames_pain1,
   	hover_run
};

static mframe_t hover_frames_land[] = {
	{ai_move, 0, NULL}
};

mmove_t hover_move_land =
{
	FRAME_land01,
	FRAME_land01,
	hover_frames_land,
	NULL
};

static mframe_t hover_frames_forward[] = {
	{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},
	{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},
	{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},
	{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 hover_move_forward =
{
	FRAME_forwrd01,
	FRAME_forwrd35,
	hover_frames_forward,
	NULL
};

static mframe_t hover_frames_walk[] = {
	{ai_walk, 4, NULL},
	{ai_walk, 4, NULL},
	{ai_walk, 4, NULL},
	{ai_walk, 4, NULL},
	{ai_walk, 4, NULL},
	{ai_walk, 4, NULL},
	{ai_walk, 4, NULL},
	{ai_walk, 4, NULL},
	{ai_walk, 4, NULL},
	{ai_walk, 4, NULL},
	{ai_walk, 4, NULL},
	{ai_walk, 4, NULL},
	{ai_walk, 4, NULL},
	{ai_walk, 4, NULL},
	{ai_walk, 4, NULL},
	{ai_walk, 4, NULL},
	{ai_walk, 4, NULL},
	{ai_walk, 4, NULL},
	{ai_walk, 4, NULL},
	{ai_walk, 4, NULL},
	{ai_walk, 4, NULL},
	{ai_walk, 4, NULL},
	{ai_walk, 4, NULL},
	{ai_walk, 4, NULL},
	{ai_walk, 4, NULL},
	{ai_walk, 4, NULL},
	{ai_walk, 4, NULL},
	{ai_walk, 4, NULL},
	{ai_walk, 4, NULL},
	{ai_walk, 4, NULL},
	{ai_walk, 4, NULL},
	{ai_walk, 4, NULL},
	{ai_walk, 4, NULL},
	{ai_walk, 4, NULL},
	{ai_walk, 4, NULL}
};

mmove_t hover_move_walk =
{
	FRAME_forwrd01,
	FRAME_forwrd35,
	hover_frames_walk,
	NULL
};

static mframe_t hover_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}
};

mmove_t hover_move_run =
{
	FRAME_forwrd01,
	FRAME_forwrd35,
	hover_frames_run,
   	NULL
};

static mframe_t hover_frames_death1[] = {
	{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, -10, NULL},
	{ai_move, 3, NULL},
	{ai_move, 5, NULL},
	{ai_move, 4, NULL},
	{ai_move, 7, NULL}
};

mmove_t hover_move_death1 =
{
	FRAME_death101,
   	FRAME_death111,
   	hover_frames_death1,
   	hover_dead
};

static mframe_t hover_frames_backward[] = {
	{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},
	{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},
	{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 hover_move_backward =
{
	FRAME_backwd01,
   	FRAME_backwd24,
	hover_frames_backward,
   	NULL
};

static mframe_t hover_frames_start_attack[] = {
	{ai_charge, 1, NULL},
	{ai_charge, 1, NULL},
	{ai_charge, 1, NULL}
};

mmove_t hover_move_start_attack =
{
	FRAME_attak101,
	FRAME_attak103,
	hover_frames_start_attack,
	hover_attack
};

static mframe_t hover_frames_attack1[] = {
	{ai_charge, -10, hover_fire_blaster},
	{ai_charge, -10, hover_fire_blaster},
	{ai_charge, 0, hover_reattack},
};

mmove_t hover_move_attack1 =
{
	FRAME_attak104,
	FRAME_attak106,
	hover_frames_attack1,
	NULL
};

static mframe_t hover_frames_end_attack[] = {
	{ai_charge, 1, NULL},
	{ai_charge, 1, NULL}
};

mmove_t hover_move_end_attack =
{
	FRAME_attak107,
	FRAME_attak108,
	hover_frames_end_attack,
	hover_run
};

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

	if (self->enemy->health > 0)
	{
		if (visible(self, self->enemy))
		{
			if (random() <= 0.6)
			{
				self->monsterinfo.currentmove = &hover_move_attack1;
				return;
			}
		}
	}

	self->monsterinfo.currentmove = &hover_move_end_attack;
}

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

	if (!self)
	{
		return;
	}

	if (self->s.frame == FRAME_attak104)
	{
		effect = EF_HYPERBLASTER;
	}
	else
	{
		effect = 0;
	}

	AngleVectors(self->s.angles, forward, right, NULL);
	G_ProjectSource(self->s.origin, monster_flash_offset[MZ2_HOVER_BLASTER_1],
			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, MZ2_HOVER_BLASTER_1, effect);
}

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

	self->monsterinfo.currentmove = &hover_move_stand;
}

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

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

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

	self->monsterinfo.currentmove = &hover_move_walk;
}

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

	self->monsterinfo.currentmove = &hover_move_start_attack;
}

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

	self->monsterinfo.currentmove = &hover_move_attack1;
}

void
hover_pain(edict_t *self, edict_t *other /* unused */,
		float kick /* unused */, int damage)
{
	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 */
	}

	if (damage <= 25)
	{
		if (random() < 0.5)
		{
			gi.sound(self, CHAN_VOICE, sound_pain1, 1, ATTN_NORM, 0);
			self->monsterinfo.currentmove = &hover_move_pain3;
		}
		else
		{
			gi.sound(self, CHAN_VOICE, sound_pain2, 1, ATTN_NORM, 0);
			self->monsterinfo.currentmove = &hover_move_pain2;
		}
	}
	else
	{
		gi.sound(self, CHAN_VOICE, sound_pain1, 1, ATTN_NORM, 0);
		self->monsterinfo.currentmove = &hover_move_pain1;
	}
}

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

	if (!self->groundentity && (level.time < self->timestamp))
	{
		self->nextthink = level.time + FRAMETIME;
		return;
	}

	BecomeExplosion1(self);
}

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

	VectorSet(self->mins, -16, -16, -24);
	VectorSet(self->maxs, 16, 16, -8);
	self->movetype = MOVETYPE_TOSS;
	self->think = hover_deadthink;
	self->nextthink = level.time + FRAMETIME;
	self->timestamp = level.time + 15;
	gi.linkentity(self);
}

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

	if (!self)
	{
		return;
	}

	/* check for gib */
	if (self->health <= self->gib_health)
	{
		gi.sound(self, CHAN_VOICE, gi.soundindex(
						"misc/udeath.wav"), 1, ATTN_NORM, 0);

		for (n = 0; n < 2; n++)
		{
			ThrowGib(self,
					"models/objects/gibs/bone/tris.md2",
					damage,
					GIB_ORGANIC);
		}

		for (n = 0; n < 2; n++)
		{
			ThrowGib(self,
					"models/objects/gibs/sm_meat/tris.md2",
					damage,
					GIB_ORGANIC);
		}

		ThrowHead(self,
				"models/objects/gibs/sm_meat/tris.md2",
				damage,
				GIB_ORGANIC);
		self->deadflag = DEAD_DEAD;
		return;
	}

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

	/* regular death */
	if (random() < 0.5)
	{
		gi.sound(self, CHAN_VOICE, sound_death1, 1, ATTN_NORM, 0);
	}
	else
	{
		gi.sound(self, CHAN_VOICE, sound_death2, 1, ATTN_NORM, 0);
	}

	self->deadflag = DEAD_DEAD;
	self->takedamage = DAMAGE_YES;
	self->monsterinfo.currentmove = &hover_move_death1;
}

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

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

	sound_pain1 = gi.soundindex("hover/hovpain1.wav");
	sound_pain2 = gi.soundindex("hover/hovpain2.wav");
	sound_death1 = gi.soundindex("hover/hovdeth1.wav");
	sound_death2 = gi.soundindex("hover/hovdeth2.wav");
	sound_sight = gi.soundindex("hover/hovsght1.wav");
	sound_search1 = gi.soundindex("hover/hovsrch1.wav");
	sound_search2 = gi.soundindex("hover/hovsrch2.wav");

	gi.soundindex("hover/hovatck1.wav");

	self->s.sound = gi.soundindex("hover/hovidle1.wav");

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

	self->health = 240;
	self->gib_health = -100;
	self->mass = 150;

	self->pain = hover_pain;
	self->die = hover_die;

	self->monsterinfo.stand = hover_stand;
	self->monsterinfo.walk = hover_walk;
	self->monsterinfo.run = hover_run;
	self->monsterinfo.attack = hover_start_attack;
	self->monsterinfo.sight = hover_sight;
	self->monsterinfo.search = hover_search;

	gi.linkentity(self);

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

	flymonster_start(self);
}
