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

#include "../g_local.h"

// ================
// PMM
bool Pickup_Nuke(edict_t *ent, edict_t *other)
{
	int quantity;

	quantity = other->client->pers.inventory[ent->item->id];

	if (quantity >= 1)
		return false;

	if (coop->integer && !P_UseCoopInstancedItems() && (ent->item->flags & IF_STAY_COOP) && (quantity > 0))
		return false;

	other->client->pers.inventory[ent->item->id]++;

	if (deathmatch->integer)
	{
		if (!(ent->spawnflags & SPAWNFLAG_ITEM_DROPPED))
			SetRespawn(ent, gtime_t::from_sec(ent->item->quantity));
	}

	return true;
}

// ================
// PGM
void Use_IR(edict_t *ent, gitem_t *item)
{
	ent->client->pers.inventory[item->id]--;

	ent->client->ir_time = max(level.time, ent->client->ir_time) + 60_sec;

	gi.sound(ent, CHAN_ITEM, gi.soundindex("misc/ir_start.wav"), 1, ATTN_NORM, 0);
}

void Use_Double(edict_t *ent, gitem_t *item)
{
	ent->client->pers.inventory[item->id]--;

	ent->client->double_time = max(level.time, ent->client->double_time) + 30_sec;

	gi.sound(ent, CHAN_ITEM, gi.soundindex("misc/ddamage1.wav"), 1, ATTN_NORM, 0);
}

void Use_Nuke(edict_t *ent, gitem_t *item)
{
	vec3_t forward, right, start;
	int	   speed;

	ent->client->pers.inventory[item->id]--;

	AngleVectors(ent->client->v_angle, forward, right, nullptr);

	start = ent->s.origin;
	speed = 100;
	fire_nuke(ent, start, forward, speed);
}

void Use_Doppleganger(edict_t *ent, gitem_t *item)
{
	vec3_t forward, right;
	vec3_t createPt, spawnPt;
	vec3_t ang;

	ang[PITCH] = 0;
	ang[YAW] = ent->client->v_angle[YAW];
	ang[ROLL] = 0;
	AngleVectors(ang, forward, right, nullptr);

	createPt = ent->s.origin + (forward * 48);

	if (!FindSpawnPoint(createPt, ent->mins, ent->maxs, spawnPt, 32))
		return;

	if (!CheckGroundSpawnPoint(spawnPt, ent->mins, ent->maxs, 64, -1))
		return;

	ent->client->pers.inventory[item->id]--;

	SpawnGrow_Spawn(spawnPt, 24.f, 48.f);
	fire_doppleganger(ent, spawnPt, forward);
}

bool Pickup_Doppleganger(edict_t *ent, edict_t *other)
{
	int quantity;

	if (!deathmatch->integer) // item is DM only
		return false;

	quantity = other->client->pers.inventory[ent->item->id];
	if (quantity >= 1) // FIXME - apply max to dopplegangers
		return false;

	other->client->pers.inventory[ent->item->id]++;

	if (!(ent->spawnflags & SPAWNFLAG_ITEM_DROPPED))
		SetRespawn(ent, gtime_t::from_sec(ent->item->quantity));

	return true;
}

bool Pickup_Sphere(edict_t *ent, edict_t *other)
{
	int quantity;

	if (other->client && other->client->owned_sphere)
	{
		//		gi.LocClient_Print(other, PRINT_HIGH, "$g_only_one_sphere_customer");
		return false;
	}

	quantity = other->client->pers.inventory[ent->item->id];
	if ((skill->integer == 1 && quantity >= 2) || (skill->integer >= 2 && quantity >= 1))
		return false;

	if ((coop->integer) && !P_UseCoopInstancedItems() && (ent->item->flags & IF_STAY_COOP) && (quantity > 0))
		return false;

	other->client->pers.inventory[ent->item->id]++;

	if (deathmatch->integer)
	{
		if (!(ent->spawnflags & SPAWNFLAG_ITEM_DROPPED))
			SetRespawn(ent, gtime_t::from_sec(ent->item->quantity));
		if (g_dm_instant_items->integer)
		{
			// PGM
			if (ent->item->use)
				ent->item->use(other, ent->item);
			else
				gi.Com_Print("Powerup has no use function!\n");
			// PGM
		}
	}

	return true;
}

void Use_Defender(edict_t *ent, gitem_t *item)
{
	if (ent->client && ent->client->owned_sphere)
	{
		gi.LocClient_Print(ent, PRINT_HIGH, "$g_only_one_sphere_time");
		return;
	}

	ent->client->pers.inventory[item->id]--;

	Defender_Launch(ent);
}

void Use_Hunter(edict_t *ent, gitem_t *item)
{
	if (ent->client && ent->client->owned_sphere)
	{
		gi.LocClient_Print(ent, PRINT_HIGH, "$g_only_one_sphere_time");
		return;
	}

	ent->client->pers.inventory[item->id]--;

	Hunter_Launch(ent);
}

void Use_Vengeance(edict_t *ent, gitem_t *item)
{
	if (ent->client && ent->client->owned_sphere)
	{
		gi.LocClient_Print(ent, PRINT_HIGH, "$g_only_one_sphere_time");
		return;
	}

	ent->client->pers.inventory[item->id]--;

	Vengeance_Launch(ent);
}

// PGM
// ================

//=================
// Item_TriggeredSpawn - create the item marked for spawn creation
//=================
USE(Item_TriggeredSpawn) (edict_t *self, edict_t *other, edict_t *activator) -> void
{
	self->svflags &= ~SVF_NOCLIENT;
	self->use = nullptr;

	if (self->spawnflags.has(SPAWNFLAG_ITEM_TOSS_SPAWN))
	{
		self->movetype = MOVETYPE_TOSS;
		vec3_t forward, right;

		AngleVectors(self->s.angles, forward, right, nullptr);
		self->s.origin = self->s.origin;
		self->s.origin[2] += 16;
		self->velocity = forward * 100;
		self->velocity[2] = 300;
	}

	if (self->item->id != IT_KEY_POWER_CUBE && self->item->id != IT_KEY_EXPLOSIVE_CHARGES) // leave them be on key_power_cube..
		self->spawnflags &= SPAWNFLAG_ITEM_NO_TOUCH;

	droptofloor(self);
}

//=================
// SetTriggeredSpawn - set up an item to spawn in later.
//=================
void SetTriggeredSpawn(edict_t *ent)
{
	// don't do anything on key_power_cubes.
	if (ent->item->id == IT_KEY_POWER_CUBE || ent->item->id == IT_KEY_EXPLOSIVE_CHARGES)
		return;

	ent->think = nullptr;
	ent->nextthink = 0_ms;
	ent->use = Item_TriggeredSpawn;
	ent->svflags |= SVF_NOCLIENT;
	ent->solid = SOLID_NOT;
}