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99 lines
2.9 KiB
C++
99 lines
2.9 KiB
C++
/*******************************************************************************
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* This file is part of the "Enduro2D"
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* For conditions of distribution and use, see copyright notice in LICENSE.md
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* Copyright (C) 2018-2020, by Matvey Cherevko (blackmatov@gmail.com)
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******************************************************************************/
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#include <enduro2d/high/systems/render_system.hpp>
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#include <enduro2d/high/components/actor.hpp>
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#include <enduro2d/high/components/camera.hpp>
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#include <enduro2d/high/components/disabled.hpp>
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#include <enduro2d/high/components/scene.hpp>
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#include "render_system_impl/render_system_base.hpp"
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#include "render_system_impl/render_system_batcher.hpp"
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#include "render_system_impl/render_system_drawer.hpp"
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namespace
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{
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using namespace e2d;
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using namespace e2d::render_system_impl;
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void for_all_children(
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const const_node_iptr& root,
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drawer::context& ctx)
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{
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ctx.draw(root);
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nodes::for_each_child(root, [&ctx](const const_node_iptr& child){
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for_all_children(child, ctx);
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});
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}
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void for_all_scenes(drawer::context& ctx, const ecs::registry& owner) {
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const auto comp = [](const auto& l, const auto& r) noexcept {
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return std::get<scene>(l).depth() < std::get<scene>(r).depth();
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};
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const auto func = [&ctx](
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const ecs::const_entity&,
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const scene&,
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const actor& scene_a)
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{
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for_all_children(scene_a.node(), ctx);
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};
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ecsex::for_extracted_sorted_components<scene, actor>(
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owner,
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comp,
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func,
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!ecs::exists_any<
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disabled<actor>,
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disabled<scene>>());
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}
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}
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namespace e2d
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{
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//
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// render_system::internal_state
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//
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class render_system::internal_state final : private noncopyable {
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public:
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internal_state()
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: drawer_(the<engine>(), the<debug>(), the<render>(), the<window>()) {}
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~internal_state() noexcept = default;
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void process_render(const ecs::const_entity& cam_e, ecs::registry& owner) {
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if ( !cam_e.valid() || !cam_e.exists_component<camera>() ) {
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return;
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}
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drawer_.with(
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cam_e.get_component<camera>(),
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[&owner](drawer::context& ctx){
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for_all_scenes(ctx, owner);
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});
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}
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private:
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drawer drawer_;
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};
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//
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// render_system
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//
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render_system::render_system()
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: state_(new internal_state()) {}
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render_system::~render_system() noexcept = default;
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void render_system::process(
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ecs::registry& owner,
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const ecs::after<systems::render_event>& trigger)
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{
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E2D_PROFILER_SCOPE("render_system.process_render");
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state_->process_render(trigger.event.cam_e, owner);
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}
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}
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