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#pragma once
#include "../ILevelHandler.h"
#include "../Actors/ActorBase.h"
#include "../../nCine/Base/HashMap.h"
namespace Jazz2::Events
{
/** @brief Spawns objects in a level */
class EventSpawner
{
public:
/** @brief Delegate to create an object */
using CreateDelegate = std::shared_ptr<Actors::ActorBase> (*)(const Actors::ActorActivationDetails& details);
/** @brief Delegate to preload assets for an object */
using PreloadDelegate = void (*)(const Actors::ActorActivationDetails& details);
/** @{ @name Constants */
/** @brief Size of event parameters */
static constexpr std::int32_t SpawnParamsSize = 16;
/** @} */
EventSpawner(ILevelHandler* levelHandler);
/** @brief Preloads assets for a given event */
void PreloadEvent(EventType type, std::uint8_t* spawnParams);
/** @brief Spawns an object for a given event */
std::shared_ptr<Actors::ActorBase> SpawnEvent(EventType type, const std::uint8_t* spawnParams, Actors::ActorState flags, std::int32_t x, std::int32_t y, std::int32_t z);
/** @overload */
std::shared_ptr<Actors::ActorBase> SpawnEvent(EventType type, const std::uint8_t* spawnParams, Actors::ActorState flags, const Vector3i& pos);
/** @brief Registers a delegate to create an object from an event */
void RegisterSpawnable(EventType type, CreateDelegate create, PreloadDelegate preload = nullptr);
private:
#ifndef DOXYGEN_GENERATING_OUTPUT
// Doxygen 1.12.0 outputs also private structs/unions even if it shouldn't
struct SpawnableEvent {
CreateDelegate CreateFunction;
PreloadDelegate PreloadFunction;
};
#endif
ILevelHandler* _levelHandler;
HashMap<EventType, SpawnableEvent> _spawnableEvents;
void RegisterKnownSpawnables();
template<typename T>
void RegisterSpawnable(EventType type);
};
}
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