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/*
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* Copyright (C) 2021 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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#ifndef ANTKEEPER_ECS_TERRAIN_SYSTEM_HPP
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#define ANTKEEPER_ECS_TERRAIN_SYSTEM_HPP
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#include "entity-system.hpp"
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#include "ecs/components/terrain-component.hpp"
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#include "ecs/entity.hpp"
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#include "geom/mesh.hpp"
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class terrain;
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class resource_manager;
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class model;
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class image;
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namespace ecs {
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class terrain_system: public entity_system
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{
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public:
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terrain_system(ecs::registry& registry, ::resource_manager* resource_manager);
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~terrain_system();
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virtual void update(double t, double dt);
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/**
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* Sets the size of a single terrain patch.
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*/
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void set_patch_size(float size);
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private:
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geom::mesh* generate_terrain_mesh(float size, int subdivisions);
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model* generate_terrain_model(geom::mesh* terrain_mesh);
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void project_terrain_mesh(geom::mesh* terrain_mesh, const ecs::terrain_component& component);
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void update_terrain_model(model* terrain_model, geom::mesh* terrain_mesh);
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void on_terrain_construct(ecs::registry& registry, ecs::entity entity, ecs::terrain_component& component);
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void on_terrain_destroy(ecs::registry& registry, ecs::entity entity);
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resource_manager* resource_manager;
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float patch_size;
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float heightmap_size;
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float heightmap_scale;
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image* heightmap;
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};
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} // namespace ecs
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#endif // ANTKEEPER_ECS_TERRAIN_SYSTEM_HPP
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