eqemu-server/zone/horse.cpp

/*	EQEmu: EQEmulator

	Copyright (C) 2001-2026 EQEmu Development Team

	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 3 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, see <http://www.gnu.org/licenses/>.
*/
#include "horse.h"

#include "common/eqemu_logsys.h"
#include "common/linked_list.h"
#include "common/repositories/horses_repository.h"
#include "common/strings.h"
#include "zone/client.h"
#include "zone/entity.h"
#include "zone/mob.h"
#include "zone/string_ids.h"

std::map<uint16, const NPCType *> Horse::horse_types;

Horse::Horse(
	Client *c,
	uint16 spell_id,
	const glm::vec4& position
) : NPC(
	GetHorseType(spell_id),
	nullptr,
	position,
	GravityBehavior::Water
)
{
	strn0cpy(name, fmt::format("{}`s_Mount00", c->GetCleanName()).c_str(), sizeof(name));

	is_horse = true;
	owner    = c;
}

void Horse::FillSpawnStruct(NewSpawn_Struct* ns, Mob* m) {
	NPC::FillSpawnStruct(ns, m);

	ns->spawn.petOwnerId = 0;
	ns->spawn.runspeed   = NPCTypedata->runspeed;
}

bool Horse::IsHorseSpell(uint16 spell_id)
{
	return GetHorseType(spell_id);
}

const NPCType *Horse::GetHorseType(uint16 spell_id)
{
	if (horse_types.count(spell_id)) {
		return horse_types[spell_id];
	}

	const NPCType* n;

	horse_types[spell_id] = n = BuildHorseType(spell_id);

	return n;
}

const NPCType *Horse::BuildHorseType(uint16 spell_id)
{
	const auto& l = HorsesRepository::GetWhere(
		content_db,
		fmt::format(
			"`filename` = '{}'",
			Strings::Escape(spells[spell_id].teleport_zone)
		)
	);

	if (l.empty()) {
		LogError("No Database entry for mount: [{}], check the horses table.", spells[spell_id].teleport_zone);
		return nullptr;
	}

	auto n = new NPCType;

	memset(n, 0, sizeof(NPCType));

	strn0cpy(n->name, "Unclaimed_Mount", sizeof(n->name));

	strn0cpy(n->special_abilities, "19,1^20,1^24,1", sizeof(n->special_abilities));

	auto e = l.front();

	n->current_hp   = 1;
	n->max_hp       = 1;
	n->race         = e.race;
	n->gender       = e.gender;
	n->class_       = Class::Warrior;
	n->deity        = 1;
	n->level        = 1;
	n->npc_id       = 0;
	n->loottable_id = 0;
	n->texture      = e.texture;
	n->helmtexture  = e.helmtexture == -1 ? e.texture : e.helmtexture;
	n->runspeed     = e.mountspeed;
	n->light        = 0;
	n->STR          = 75;
	n->STA          = 75;
	n->DEX          = 75;
	n->AGI          = 75;
	n->INT          = 75;
	n->WIS          = 75;
	n->CHA          = 75;

	return n;
}

void Client::SummonHorse(uint16 spell_id)
{
	if (GetHorseId()) {
		MessageString(Chat::Red, ALREADY_ON_A_MOUNT);
		return;
	}

	if (!Horse::IsHorseSpell(spell_id)) {
		LogError("[{}] tried to summon an unknown horse, spell_id [{}].", GetName(), spell_id);
		return;
	}

	Horse* h = new Horse(this, spell_id, GetPosition());

	entity_list.AddNPC(h, false);

	EQApplicationPacket outapp;

	h->CreateHorseSpawnPacket(&outapp);

	entity_list.QueueClients(h, &outapp);

	SetHorseId(h->GetID());
	BuffFadeBySitModifier();
}

void Client::SetHorseId(uint16 in_horse_id)
{
	if (horseId == in_horse_id) {
		return;
	}

	if (horseId) {
		Mob* h = entity_list.GetMob(horseId);
		if (h) {
			h->Depop();
		}
	}

	horseId = in_horse_id;
}

void Mob::CreateHorseSpawnPacket(EQApplicationPacket* app, Mob* m) {
	app->SetOpcode(OP_NewSpawn);
	safe_delete_array(app->pBuffer);
	app->pBuffer = new uchar[sizeof(NewSpawn_Struct)];
	app->size = sizeof(NewSpawn_Struct);
	memset(app->pBuffer, 0, sizeof(NewSpawn_Struct));
	auto* ns = (NewSpawn_Struct*) app->pBuffer;
	FillSpawnStruct(ns, m);
}