💿🐜 Antkeeper source code
https://antkeeper.com
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105 lines
2.9 KiB
105 lines
2.9 KiB
/*
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* Copyright (C) 2017-2019 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 TERRAIN_SYSTEM_HPP
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#define TERRAIN_SYSTEM_HPP
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#include "../entity-group.hpp"
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#include "../components/model-component.hpp"
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#include "../components/terrain-patch-component.hpp"
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#include "../components/transform-component.hpp"
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#include "../system.hpp"
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#include <map>
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// The terrain system creates a model and adds the model component to new members of this group.
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typedef EntityGroup<TerrainPatchComponent, TransformComponent> TerrainCreationGroup;
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typedef EntityGroup<ModelComponent, TerrainPatchComponent, TransformComponent> TerrainGroup;
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class TerrainSystem:
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public System,
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public TerrainCreationGroup::Observer,
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public TerrainGroup::Observer
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{
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public:
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TerrainSystem(ComponentManager* componentManager);
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virtual ~TerrainSystem();
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virtual void update(float t, float dt);
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void setPatchSize(float size);
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private:
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virtual void memberRegistered(const TerrainCreationGroup::Member* member);
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virtual void memberUnregistered(const TerrainCreationGroup::Member* member);
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virtual void memberRegistered(const TerrainGroup::Member* member);
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virtual void memberUnregistered(const TerrainGroup::Member* member);
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/**
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* Generates a subdivided plane triangle mesh.
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*
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* 0 subdivisions:
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* +---+
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* | / |
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* +---+
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*
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* 1 subdivision:
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* +---+---+
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* | / | / |
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* +---+---+
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* | / | / |
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* +---+---+
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*
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* 2 subdivisions:
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* +---+---+---+---+
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* | / | / | / | / |
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* +---+---+---+---+
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* | / | / | / | / |
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* +---+---+---+---+
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* | / | / | / | / |
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* +---+---+---+---+
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* | / | / | / | / |
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* +---+---+---+---+
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*
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* @param subdivisions Number of subdivisions.
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* @return Generated triangle mesh.
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*/
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TriangleMesh* generatePlane(int subdivisions);
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/**
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* Generates a model from a triangle mesh.
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*
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* @param mesh Triangle mesh from which a model will be generated.
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* @return Generated model.
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*/
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Model* generateModel(TriangleMesh* mesh);
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/**
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* Projects the vertices of a triangle mesh onto terrain brush geometry.
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*/
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void projectMesh(TriangleMesh* mesh);
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TerrainCreationGroup terrainCreationGroup;
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TerrainGroup terrainGroup;
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std::map<std::tuple<int, int>, const TerrainGroup::Member*> patchMap;
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float patchSize;
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};
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#endif // TERRAIN_SYSTEM_HPP
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