light/modules/ecs/private/scene.cpp
light7734 cd886aa8c9
Some checks reported errors
continuous-integration/drone/push Build was killed
refactor: flatten directory structure
2025-07-20 04:46:15 +03:30

110 lines
2.6 KiB
C++

#include <camera/component.hpp>
#include <ecs/components.hpp>
#include <ecs/entity.hpp>
#include <ecs/scene.hpp>
#include <renderer/renderer.hpp>
namespace lt {
void Scene::on_create()
{
/* native scripts */
{
m_registry.view<NativeScriptComponent>().each([](NativeScriptComponent &nsc) {
if (nsc.instance == nullptr)
{
nsc.instance = nsc.CreateInstance();
nsc.instance->on_create();
}
});
}
}
void Scene::on_update(float deltaTime)
{
/* native scripts */
{
m_registry.view<NativeScriptComponent>().each([=](NativeScriptComponent &nsc) {
nsc.instance->on_update(deltaTime);
});
}
}
void Scene::on_render(const Ref<Framebuffer> &targetFrameBuffer /* = nullptr */)
{
auto *sceneCamera = (Camera *)nullptr;
auto *sceneCameraTransform = (TransformComponent *)nullptr;
/* scene camera */
{
m_registry.group(entt::get<TransformComponent, CameraComponent>)
.each([&](TransformComponent &transformComp, CameraComponent &cameraComp) {
if (cameraComp.isPrimary)
{
sceneCamera = &cameraComp.camera;
sceneCameraTransform = &transformComp;
}
});
}
/* draw quads */
{
if (sceneCamera)
{
Renderer::begin_scene(sceneCamera, *sceneCameraTransform, targetFrameBuffer);
m_registry.group(entt::get<TransformComponent, SpriteRendererComponent>)
.each([](TransformComponent &transformComp,
SpriteRendererComponent &spriteRendererComp) {
Renderer::draw_quad(
transformComp,
spriteRendererComp.tint,
spriteRendererComp.texture
);
});
Renderer::end_scene();
}
}
}
auto Scene::create_entity(const std::string &name, const TransformComponent &transform) -> Entity
{
return create_entity_with_uuid(name, UUID(), transform);
}
auto Scene::get_entity_by_tag(const std::string &tag) -> Entity
{
// TagComponent tagComp(tag);
// entt::entity entity = entt::to_entity(m_registry, tagComp);
auto entity = Entity {};
m_registry.view<TagComponent>().each([&](TagComponent &tagComp) {
// if (tagComp.tag == tag)
// entity = entity(entt::to_entity(m_registry, tagComp), this);
});
if (entity.is_valid())
{
return entity;
}
ensure(false, "Scene::get_entity_by_tag: failed to find entity by tag: {}", tag);
return {};
}
auto Scene::create_entity_with_uuid(
const std::string &name,
UUID uuid,
const TransformComponent &transform
) -> Entity
{
auto entity = Entity { m_registry.create(), this };
entity.add_component<TagComponent>(name);
entity.add_component<TransformComponent>(transform);
entity.add_component<UUIDComponent>(uuid);
return entity;
}
} // namespace lt