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Tutorial 8 EntitySystem
Tutorial 8 EntitySystem
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‎Tutorial8_EntitySystem_Basics/Assets/Shaders/BasicShader.frag‎

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/*MIT License
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C++ OpenGL 3D Game Tutorial Series (https://github.com/PardCode/OpenGL-3D-Game-Tutorial-Series)
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Copyright (c) 2021-2022, PardCode
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Permission is hereby granted, free of charge, to any person obtaining a copy
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of this software and associated documentation files (the "Software"), to deal
9+
in the Software without restriction, including without limitation the rights
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to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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copies of the Software, and to permit persons to whom the Software is
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furnished to do so, subject to the following conditions:
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The above copyright notice and this permission notice shall be included in all
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copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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SOFTWARE.*/
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#version 410 core
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layout(location = 0) in vec3 vertOutColor;
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layout(location = 0) out vec4 outColor;
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void main()
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{
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outColor = vec4(1,1,1,1);
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outColor.rgb = vertOutColor;
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}

‎Tutorial8_EntitySystem_Basics/Assets/Shaders/BasicShader.vert‎

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/*MIT License
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C++ OpenGL 3D Game Tutorial Series (https://github.com/PardCode/OpenGL-3D-Game-Tutorial-Series)
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Copyright (c) 2021-2022, PardCode
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Permission is hereby granted, free of charge, to any person obtaining a copy
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of this software and associated documentation files (the "Software"), to deal
9+
in the Software without restriction, including without limitation the rights
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to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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copies of the Software, and to permit persons to whom the Software is
12+
furnished to do so, subject to the following conditions:
13+
14+
The above copyright notice and this permission notice shall be included in all
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copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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SOFTWARE.*/
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#version 410 core
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layout (row_major) uniform UniformData
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{
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mat4 world;
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mat4 projection;
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};
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layout(location = 0) in vec3 position;
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layout(location = 1) in vec2 texcoord;
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layout(location = 0) out vec3 vertOutColor;
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void main()
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{
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vec4 pos = vec4(position,1) * world;
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pos = pos * projection;
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gl_Position = pos;
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vertOutColor = vec3(texcoord.x,texcoord.y,0);
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}

‎Tutorial8_EntitySystem_Basics/Game/MyGame.cpp‎

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/*MIT License
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C++ OpenGL 3D Game Tutorial Series (https://github.com/PardCode/OpenGL-3D-Game-Tutorial-Series)
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Copyright (c) 2021-2022, PardCode
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Permission is hereby granted, free of charge, to any person obtaining a copy
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of this software and associated documentation files (the "Software"), to deal
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in the Software without restriction, including without limitation the rights
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to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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copies of the Software, and to permit persons to whom the Software is
12+
furnished to do so, subject to the following conditions:
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The above copyright notice and this permission notice shall be included in all
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copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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SOFTWARE.*/
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#include "MyGame.h"
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MyGame::MyGame()
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{
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}
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MyGame::~MyGame()
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{
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}
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void MyGame::onCreate()
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{
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OGame::onCreate();
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m_player = getEntitySystem()->createEntity<MyPlayer>();
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}
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void MyGame::onUpdate(f32 deltaTime)
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{
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}

‎Tutorial8_EntitySystem_Basics/Game/MyGame.h‎

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/*MIT License
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C++ OpenGL 3D Game Tutorial Series (https://github.com/PardCode/OpenGL-3D-Game-Tutorial-Series)
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Copyright (c) 2021-2022, PardCode
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Permission is hereby granted, free of charge, to any person obtaining a copy
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of this software and associated documentation files (the "Software"), to deal
9+
in the Software without restriction, including without limitation the rights
10+
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
11+
copies of the Software, and to permit persons to whom the Software is
12+
furnished to do so, subject to the following conditions:
13+
14+
The above copyright notice and this permission notice shall be included in all
15+
copies or substantial portions of the Software.
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17+
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
18+
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
19+
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
20+
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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SOFTWARE.*/
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#pragma once
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#include <OGL3D/All.h>
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#include "MyPlayer.h"
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class MyGame: public OGame
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{
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public:
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MyGame();
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~MyGame();
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virtual void onCreate();
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virtual void onUpdate(f32 deltaTime);
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private:
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f32 m_elapsedSeconds = 0.0f;
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MyPlayer* m_player = nullptr;
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};
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‎Tutorial8_EntitySystem_Basics/Game/MyPlayer.cpp‎

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/*MIT License
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C++ OpenGL 3D Game Tutorial Series (https://github.com/PardCode/OpenGL-3D-Game-Tutorial-Series)
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Copyright (c) 2021-2022, PardCode
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Permission is hereby granted, free of charge, to any person obtaining a copy
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of this software and associated documentation files (the "Software"), to deal
9+
in the Software without restriction, including without limitation the rights
10+
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
11+
copies of the Software, and to permit persons to whom the Software is
12+
furnished to do so, subject to the following conditions:
13+
14+
The above copyright notice and this permission notice shall be included in all
15+
copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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SOFTWARE.*/
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#include "MyPlayer.h"
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MyPlayer::MyPlayer()
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{
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}
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MyPlayer::~MyPlayer()
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{
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}
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void MyPlayer::onCreate()
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{
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m_entity = getEntitySystem()->createEntity<OEntity>();
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}
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void MyPlayer::onUpdate(f32 deltaTime)
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{
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m_elapsedSeconds += deltaTime;
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if (m_entity && m_elapsedSeconds >= 3.0f)
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{
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m_entity->release();
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m_entity = nullptr;
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}
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}

‎Tutorial8_EntitySystem_Basics/Game/MyPlayer.h‎

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/*MIT License
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C++ OpenGL 3D Game Tutorial Series (https://github.com/PardCode/OpenGL-3D-Game-Tutorial-Series)
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Copyright (c) 2021-2022, PardCode
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7+
Permission is hereby granted, free of charge, to any person obtaining a copy
8+
of this software and associated documentation files (the "Software"), to deal
9+
in the Software without restriction, including without limitation the rights
10+
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
11+
copies of the Software, and to permit persons to whom the Software is
12+
furnished to do so, subject to the following conditions:
13+
14+
The above copyright notice and this permission notice shall be included in all
15+
copies or substantial portions of the Software.
16+
17+
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
18+
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
19+
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
20+
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
21+
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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SOFTWARE.*/
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#pragma once
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#include <OGL3D/All.h>
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class MyPlayer: public OEntity
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{
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public:
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MyPlayer();
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~MyPlayer();
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virtual void onCreate();
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virtual void onUpdate(f32 deltaTime);
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private:
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f32 m_elapsedSeconds = 0.0f;
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OEntity* m_entity = nullptr;
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};
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‎Tutorial8_EntitySystem_Basics/Game/main.cpp‎

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/*MIT License
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C++ OpenGL 3D Game Tutorial Series (https://github.com/PardCode/OpenGL-3D-Game-Tutorial-Series)
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Copyright (c) 2021-2022, PardCode
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7+
Permission is hereby granted, free of charge, to any person obtaining a copy
8+
of this software and associated documentation files (the "Software"), to deal
9+
in the Software without restriction, including without limitation the rights
10+
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
11+
copies of the Software, and to permit persons to whom the Software is
12+
furnished to do so, subject to the following conditions:
13+
14+
The above copyright notice and this permission notice shall be included in all
15+
copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
18+
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
19+
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
20+
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
21+
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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SOFTWARE.*/
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#include "MyGame.h"
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#include <iostream>
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int main()
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{
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try
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{
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MyGame game;
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game.run();
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}
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catch (const std::exception& e)
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{
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std::wclog << e.what() << std::endl;
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return -1;
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}
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return 0;
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}

‎Tutorial8_EntitySystem_Basics/OGL3D/include/OGL3D/All.h‎

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/*MIT License
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C++ OpenGL 3D Game Tutorial Series (https://github.com/PardCode/OpenGL-3D-Game-Tutorial-Series)
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Copyright (c) 2021-2022, PardCode
6+
7+
Permission is hereby granted, free of charge, to any person obtaining a copy
8+
of this software and associated documentation files (the "Software"), to deal
9+
in the Software without restriction, including without limitation the rights
10+
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
11+
copies of the Software, and to permit persons to whom the Software is
12+
furnished to do so, subject to the following conditions:
13+
14+
The above copyright notice and this permission notice shall be included in all
15+
copies or substantial portions of the Software.
16+
17+
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
18+
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
19+
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
20+
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
21+
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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SOFTWARE.*/
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#pragma once
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#include <OGL3D/Entity/OEntity.h>
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#include <OGL3D/Entity/OEntitySystem.h>
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#include <OGL3D/Game/OGame.h>

‎Tutorial8_EntitySystem_Basics/OGL3D/include/OGL3D/Entity/OEntity.h‎

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/*MIT License
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C++ OpenGL 3D Game Tutorial Series (https://github.com/PardCode/OpenGL-3D-Game-Tutorial-Series)
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Copyright (c) 2021-2022, PardCode
6+
7+
Permission is hereby granted, free of charge, to any person obtaining a copy
8+
of this software and associated documentation files (the "Software"), to deal
9+
in the Software without restriction, including without limitation the rights
10+
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
11+
copies of the Software, and to permit persons to whom the Software is
12+
furnished to do so, subject to the following conditions:
13+
14+
The above copyright notice and this permission notice shall be included in all
15+
copies or substantial portions of the Software.
16+
17+
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
18+
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
19+
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
20+
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
21+
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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SOFTWARE.*/
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#pragma once
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#include <OGL3D/OPrerequisites.h>
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class OEntitySystem;
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class OEntity
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{
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public:
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OEntity();
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virtual ~OEntity();
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void release();
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OEntitySystem* getEntitySystem();
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protected:
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virtual void onCreate() {}
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virtual void onUpdate(f32 deltaTime) {}
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protected:
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size_t m_id = 0;
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OEntitySystem* m_entitySystem = nullptr;
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friend class OEntitySystem;
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};
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