transform_system.cpp

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#include "transform_system.h"
 
#include <engine/ecs/components/transform_component.h>
#include <engine/ecs/ecs.h>
#include <engine/profiler/profiler.h>
 
#include <logging/logging.h>
 
#define POOLSTL_STD_SUPPLEMENT 1
#include <poolstl/poolstl.hpp>
 
namespace unravel
{
 
auto transform_system::init(rtti::context& ctx) -> bool
{
    APPLOG_TRACE("{}::{}", hpp::type_name_str(*this), __func__);
 
    return true;
}
 
auto transform_system::deinit(rtti::context& ctx) -> bool
{
    APPLOG_TRACE("{}::{}", hpp::type_name_str(*this), __func__);
 
    return true;
}
 
void transform_system::on_frame_update(scene& scn, delta_t dt)
{
    APP_SCOPE_PERF("Transform/System Update");
 
    // Create a view for entities with transform_component and submesh_component
    auto view_root = scn.registry->view<transform_component, root_component>();
 
    // Use std::for_each with the view's iterators
    std::for_each(std::execution::par,
                  view_root.begin(),
                  view_root.end(),
                  [&view_root](entt::entity entity)
                  {
                      auto& transform_comp = view_root.get<transform_component>(entity);
 
                      transform_comp.resolve_transform_global();
                  });
}
 
void transform_system::on_play_begin(hpp::span<const entt::handle> entities, delta_t dt)
{
    for(auto entity : entities)
    {
        if(auto transform_comp = entity.try_get<transform_component>())
        {
            transform_comp->resolve_transform_global();
        }
    }
}
 
} // namespace unravel