💿🐜 Antkeeper source code
https://antkeeper.com
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139 lines
3.8 KiB
139 lines
3.8 KiB
/*
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* Copyright (C) 2020 Christopher J. Howard
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*
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* This file is part of Antkeeper source code.
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*
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* Antkeeper source code is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* Antkeeper source code is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with Antkeeper source code. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include "render-system.hpp"
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#include "game/components/transform-component.hpp"
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#include "renderer/renderer.hpp"
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using namespace ecs;
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render_system::render_system(entt::registry& registry):
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entity_system(registry),
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renderer(nullptr)
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{
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registry.on_construct<model_component>().connect<&render_system::on_model_construct>(this);
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registry.on_replace<model_component>().connect<&render_system::on_model_replace>(this);
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registry.on_destroy<model_component>().connect<&render_system::on_model_destroy>(this);
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}
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void render_system::update(double t, double dt)
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{
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registry.view<transform_component, model_component>().each
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(
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[this](auto entity, auto& transform, auto& model)
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{
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model_instance* instance = model_instances[entity];
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instance->set_transform(transform.transform);
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if (transform.warp)
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{
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instance->get_transform_tween().update();
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instance->update_tweens();
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transform.warp = false;
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}
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}
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);
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}
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void render_system::render(double alpha)
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{
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if (renderer)
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{
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for (const scene* scene: layers)
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{
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renderer->render(alpha, *scene);
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}
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}
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}
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void render_system::add_layer(::scene* layer)
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{
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layers.push_back(layer);
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}
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void render_system::remove_layers()
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{
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layers.clear();
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}
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void render_system::set_renderer(::renderer* renderer)
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{
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this->renderer = renderer;
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}
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model_instance* render_system::get_model_instance(entt::entity entity)
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{
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if (auto it = model_instances.find(entity); it != model_instances.end())
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return it->second;
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return nullptr;
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}
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void render_system::update_model_and_materials(entt::entity entity, model_component& model)
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{
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if (auto model_it = model_instances.find(entity); model_it != model_instances.end())
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{
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model_it->second->set_model(model.model);
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model_it->second->set_instanced((model.instance_count > 0), model.instance_count);
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for (auto material_it = model.materials.begin(); material_it != model.materials.end(); ++material_it)
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{
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model_it->second->set_material(material_it->first, material_it->second);
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}
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// Add model instance to its specified layers
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for (std::size_t i = 0; i < std::min<std::size_t>(layers.size(), (sizeof(model.layers) << 3)); ++i)
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{
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layers[i]->remove_object(model_it->second);
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if ((model.layers >> i) & 1)
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{
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layers[i]->add_object(model_it->second);
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}
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}
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}
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}
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void render_system::on_model_construct(entt::registry& registry, entt::entity entity, model_component& model)
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{
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::model_instance* model_instance = new ::model_instance();
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model_instances[entity] = model_instance;
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update_model_and_materials(entity, model);
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}
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void render_system::on_model_replace(entt::registry& registry, entt::entity entity, model_component& model)
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{
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update_model_and_materials(entity, model);
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}
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void render_system::on_model_destroy(entt::registry& registry, entt::entity entity)
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{
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if (auto it = model_instances.find(entity); it != model_instances.end())
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{
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// Remove model instance from all layers
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for (std::size_t i = 0; i < layers.size(); ++i)
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{
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layers[i]->remove_object(it->second);
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}
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delete it->second;
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model_instances.erase(it);
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}
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}
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