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  1. //
  2. // Lol Engine — EasyMesh tutorial
  3. //
  4. // Copyright © 2011—2019 Sam Hocevar <sam@hocevar.net>
  5. // © 2012—2013 Benjamin “Touky” Huet <huet.benjamin@gmail.com>
  6. //
  7. // Lol Engine is free software. It comes without any warranty, to
  8. // the extent permitted by applicable law. You can redistribute it
  9. // and/or modify it under the terms of the Do What the Fuck You Want
  10. // to Public License, Version 2, as published by the WTFPL Task Force.
  11. // See http://www.wtfpl.net/ for more details.
  12. //
  13. #if HAVE_CONFIG_H
  14. # include "config.h"
  15. #endif
  16. #include <lol/engine.h>
  17. #include <lol/lua.h>
  18. using namespace lol;
  19. #define USE_CUSTOM_SHADER 1
  20. #if USE_CUSTOM_SHADER
  21. LOLFX_RESOURCE_DECLARE(easymesh_shiny);
  22. #endif //USE_CUSTOM_SHADER
  23. class EasyMeshTutorial : public WorldEntity
  24. {
  25. public:
  26. EasyMeshTutorial()
  27. {
  28. EasyMeshLuaLoader EzMhLoader;
  29. EzMhLoader.ExecLuaFile("05_easymesh.lua");
  30. EasyMeshLuaObject* gears0 = EzMhLoader.GetPtr<EasyMeshLuaObject>("g0");
  31. EasyMeshLuaObject* gears1 = EzMhLoader.GetPtr<EasyMeshLuaObject>("g1");
  32. EasyMeshLuaObject* gears2 = EzMhLoader.GetPtr<EasyMeshLuaObject>("g2");
  33. EasyMeshLuaObject* gears3 = EzMhLoader.GetPtr<EasyMeshLuaObject>("g3");
  34. EasyMeshLuaObject* gears4 = EzMhLoader.GetPtr<EasyMeshLuaObject>("g4");
  35. m_gears.push(gears0->GetMesh(), mat4(1.0f), 0.0f);
  36. m_gears.push(gears1->GetMesh(), mat4(1.0f), 0.0f);
  37. m_gears.push(gears2->GetMesh(), mat4(1.0f), 180.0f / 18);
  38. m_gears.push(gears3->GetMesh(), mat4(1.0f), 180.0f / 18);
  39. m_gears.push(gears4->GetMesh(), mat4(1.0f), 180.0f / 18);
  40. /*
  41. m_gears[0].m1.Compile("[sc#00f ab 8 1 8 ty -.25]"
  42. "[sc#f9f scb#f9f acg 12 10 5 5 20 20 5 5 0.1 0 s .1 .1 .1 ty -.1 csgu]"
  43. "[sc#fff scb#000 acg 12 10 10 10 20 20 5 5 0.1 0 s .05 .05 .05 tx -1.5 ty .3 csgu]"
  44. "[sc#00f ab 5 3 9 tx 2.5 csgs]"
  45. "[[ sc#fff ab 3 1.4 2 tx -2 tz -2 "
  46. "[sc#fff ab 2.1 .7 1.1 ty .5 tx -1.4 tz -1.4 csgs] mz] csgu]");
  47. m_gears[1].m1.Compile("sc#ff9 scb#ff9 acg 54 10 95 95 90 90 -5 -5 0.1 0 s .1 .1 .1");
  48. m_gears[2].m1.Compile("[sc#0f0 ab 2 2 2 t .8 .8 .8 rx 20 ry 20 [sc#00f ab 2 2 2 tx 0 csgu]]");
  49. m_gears[3].m1.Compile("[sc#0f0 ab 2 2 2 t .8 .8 .8 rx 20 ry 20 [sc#00f ab 2 2 2 tx 0 csgs]]");
  50. m_gears[4].m1.Compile("[sc#0f0 ab 2 2 2 t .8 .8 .8 rx 20 ry 20 [sc#00f ab 2 2 2 tx 0 csga]]");
  51. */
  52. m_angle = 0;
  53. m_camera = new Camera();
  54. m_camera->SetProjection(mat4::perspective(radians(30.f), 960.f, 600.f, .1f, 1000.f));
  55. m_camera->SetView(mat4::lookat(vec3(-15.f, 5.f, 0.f),
  56. vec3(0.f, -1.f, 0.f),
  57. vec3(0.f, 1.f, 0.f)));
  58. Scene& scene = Scene::GetScene();
  59. scene.PushCamera(m_camera);
  60. /* Add a white directional light */
  61. m_light1 = new Light();
  62. m_light1->SetPosition(vec3(0.2f, 0.2f, 0.f));
  63. m_light1->SetColor(vec4(0.5f, 0.5f, 0.5f, 1.f));
  64. m_light1->SetType(LightType::Directional);
  65. Ticker::Ref(m_light1);
  66. /* Add an orangeish point light */
  67. m_light2 = new Light();
  68. m_light2->SetPosition(vec3(-15.f, 15.f, 15.f));
  69. m_light2->SetColor(vec4(0.4f, 0.3f, 0.2f, 1.f));
  70. m_light2->SetType(LightType::Point);
  71. Ticker::Ref(m_light2);
  72. m_ready = false;
  73. }
  74. ~EasyMeshTutorial()
  75. {
  76. Scene& scene = Scene::GetScene();
  77. scene.PopCamera(m_camera);
  78. Ticker::Unref(m_light1);
  79. Ticker::Unref(m_light2);
  80. }
  81. virtual void tick_game(float seconds)
  82. {
  83. WorldEntity::tick_game(seconds);
  84. m_angle += seconds * radians(70.0f);
  85. m_mat = mat4::rotate(radians(10.0f), vec3(0, 0, 1))
  86. * mat4::rotate(radians(100.f), vec3(0, 1, 0));
  87. // * mat4::rotate(m_angle, vec3(0, 1, 0));
  88. m_gears[0].m3 += seconds * radians(20.0f);
  89. m_gears[1].m3 += seconds * radians(20.0f) * -2 / 9;
  90. m_gears[2].m3 += seconds * radians(20.0f) * -2 / 3;
  91. m_gears[3].m3 += seconds * radians(20.0f) * -2 / 3;
  92. m_gears[4].m3 += seconds * radians(20.0f) * -2 / 3;
  93. m_gears[0].m2 = mat4::translate(vec3(0, -1, 0))
  94. * mat4::rotate(m_gears[0].m3 - 130.0f, vec3(0, 1, 0))
  95. * mat4::rotate(40.0f, vec3(0, 0, 1));
  96. m_gears[1].m2 = mat4::translate(vec3(0, 0, 0))
  97. * mat4::rotate(m_gears[1].m3, vec3(0, 1, 0));
  98. m_gears[2].m2 = mat4::translate(vec3(0, 0, 5.5f))
  99. * mat4::rotate(m_gears[2].m3 - 40.0f, vec3(0, 1, 0))
  100. * mat4::rotate(90.0f, vec3(0, 0, 1));
  101. m_gears[3].m2 = mat4::translate(vec3(5.5f * lol::sqrt(3.f) * 0.5f, 0, -5.5f * 0.5f))
  102. * mat4::rotate(m_gears[3].m3 - 140.0f, vec3(0, 1, 0))
  103. * mat4::rotate(-70.0f, vec3(0, 0, 1));
  104. m_gears[4].m2 = mat4::translate(vec3(-5.5f * lol::sqrt(3.f) * 0.5f, 0, -5.5f * 0.5f))
  105. * mat4::rotate(m_gears[4].m3 - 80.0f, vec3(0, 1, 0));
  106. }
  107. virtual void tick_draw(float seconds, Scene &scene)
  108. {
  109. WorldEntity::tick_draw(seconds, scene);
  110. if (!m_ready)
  111. {
  112. scene.get_renderer()->SetClearColor(vec4(0.0f, 0.0f, 0.0f, 1.0f));
  113. /* Upload vertex data to GPU */
  114. for (int i = 0; i < m_gears.count(); i++)
  115. m_gears[i].m1.MeshConvert();
  116. #if USE_CUSTOM_SHADER
  117. /* Custom Shader: Init the shader */
  118. auto custom_shader = Shader::Create(LOLFX_RESOURCE_NAME(easymesh_shiny));
  119. // any other shader stuf here (Get uniform, mostly, and set texture)
  120. for (int i = 0; i < m_gears.count(); i++)
  121. m_gears[i].m1.SetMaterial(custom_shader);
  122. #endif
  123. m_ready = true;
  124. }
  125. for (int i = 0; i < m_gears.count(); i++)
  126. {
  127. m_gears[i].m1.Render(scene, m_mat * m_gears[i].m2);
  128. }
  129. }
  130. private:
  131. array<EasyMesh, mat4, float> m_gears;
  132. float m_angle;
  133. mat4 m_mat;
  134. Camera *m_camera;
  135. Light *m_light1, *m_light2;
  136. bool m_ready;
  137. };
  138. int main(int argc, char **argv)
  139. {
  140. sys::init(argc, argv);
  141. Application app("Tutorial 5: EasyMesh", ivec2(960, 600), 60.0f);
  142. new EasyMeshTutorial();
  143. app.Run();
  144. return EXIT_SUCCESS;
  145. }