/*
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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_VEGETATION_SYSTEM_HPP
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#define ANTKEEPER_VEGETATION_SYSTEM_HPP
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#include "entity-system.hpp"
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#include "game/components/terrain-component.hpp"
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class model;
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namespace scene
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{
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class collection;
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}
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/**
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* Places vegetation patches on terrain.
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*/
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class vegetation_system: public entity_system
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{
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public:
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vegetation_system(entt::registry& registry);
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~vegetation_system();
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virtual void update(double t, double dt);
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/**
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* Sets the terrain patch size.
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*
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* @param size Size of the terrain patch.
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*/
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void set_terrain_patch_size(float size);
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/**
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* Sets the vegetation patch size.
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*
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* @param subdivisions Number of times a terrain patch should be subdivided into vegetation patches.
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*/
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void set_vegetation_patch_resolution(int subdivisions);
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void set_vegetation_density(float density);
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void set_vegetation_model(::model* model);
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void set_scene(scene::collection* collection);
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private:
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void on_terrain_construct(entt::registry& registry, entt::entity entity, ecs::terrain_component& component);
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void on_terrain_destroy(entt::registry& registry, entt::entity entity);
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float terrain_patch_size;
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float vegetation_patch_size;
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int vegetation_patch_columns;
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int vegetation_patch_rows;
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float vegetation_density;
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model* vegetation_model;
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scene::collection* scene_collection;
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};
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#endif // ANTKEEPER_VEGETATION_SYSTEM_HPP
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