diff options
Diffstat (limited to 'graphics/GLbackend.h')
| -rw-r--r-- | graphics/GLbackend.h | 140 |
1 files changed, 140 insertions, 0 deletions
diff --git a/graphics/GLbackend.h b/graphics/GLbackend.h new file mode 100644 index 0000000..7b00b90 --- /dev/null +++ b/graphics/GLbackend.h @@ -0,0 +1,140 @@ +#pragma once +#define GL3_PROTOTYPES 1 +#include <GL/glew.h> +#include <SDL2/SDL.h> +#include <string> +#include <thread> +#include "shader.h" +#include "fonts.h" +#include <functional> +#include <glm/vec3.hpp> +#include "scancodes.h" +#include "texture.h" +#include "AudioManager.h" + +#define SGG_CHECK_GL() do {GLenum err;while((err = glGetError()) != GL_NO_ERROR){ printf("Error %s %d\n", (const char*)glewGetErrorString(err), err);exit(0);}printf("Pass\n");} while(0); + +constexpr auto CURVE_SUBDIVS = 64; + +//#undef main +namespace graphics +{ + void PrintSDL_GL_Attributes(); + void CheckSDLError(int line); + + class GLBackend + { + protected: + int m_width, + m_height; + std::string m_title; + SDL_Window * m_window; + uint32_t m_windowID; + SDL_GLContext m_context; + bool m_initialized = false; + FontLib m_fontlib; + SDL_TimerID m_idle_timer; + glm::vec3 m_back_color = { 0.0f, 0.0f, 0.0f }; + + glm::ivec2 m_mouse_pos = glm::ivec2(); + glm::ivec2 m_prev_mouse_pos = glm::ivec2(); + bool m_button_state[3] = { 0, 0, 0 }; + bool m_button_pressed[3] = { 0, 0, 0 }; + bool m_button_released[3] = { 0, 0, 0 }; + bool m_mouse_dragging = false; + + glm::vec4 m_requested_canvas = glm::vec4(0.0f); + glm::vec4 m_canvas; + int m_canvas_mode = 0; + + glm::mat4 m_projection; + glm::mat4 m_transformation = glm::mat4(1.0f); + float m_orientation = 0.0f; + glm::vec3 m_scale = glm::vec3(1.0f); + Shader m_flat_shader; + + GLuint m_rect_vbo; + GLuint m_rect_vao; + GLuint m_rect_outline_vbo; + GLuint m_rect_outline_vao; + GLuint m_line_vbo; + GLuint m_line_vao; + GLuint m_sector_vbo; + GLuint m_sector_vao; + GLuint m_sector_outline_vbo; + GLuint m_sector_outline_vao; + + glm::vec4 m_window_to_canvas_factors; + + AudioManager * m_audio = nullptr; + + TextureManager textures; + + std::chrono::time_point<std::chrono::steady_clock> m_prev_time_tick; + float m_global_time = 0.0f; + float m_delta_time = 0.0f; + + const void* m_user_data = nullptr; + + bool processEvent(SDL_Event event); + + void advanceTime(); + + void computeProjection(); + void initPrimitives(); + void computeTransformation(); + + std::function<void()> m_draw_callback = nullptr; + std::function<void(float ms)> m_idle_callback = nullptr; + std::function<void(int w, int h)> m_resize_callback = nullptr; + + public: + void drawRect(float cx, float cy, float w, float h, const struct Brush & brush); + void drawLine(float x_1, float y_1, float x_2, float y_2, const struct Brush & brush); + void drawSector(float cx, float cy, float start_angle, float end_angle, float radius1, float radius2, const struct Brush & brush); + void drawText(float pos_x, float pos_y, float size, const std::string & text, const Brush & brush); + + void setUserData(const void* user_data); + void* getUserData(); + + void setScale(float sx, float sy, float sz); + void setOrientation(float degrees); + void resetPose(); + bool setFont(std::string fontname); + + bool getKeyState(scancode_t key); + void setDrawCallback(std::function<void()> drf); + void setIdleCallback(std::function<void(float ms)> idf); + void setResizeCallback(std::function<void(int w, int h)> rsf); + virtual bool init(); + GLBackend(int w = 800, int h = 600, std::string title = ""); + virtual void cleanup(); + void swap(); + bool processMessages(); + virtual void update(float delta_time = 0.0f); + virtual void resize(int w, int h); + float WindowToCanvasX(float x, bool clamped = true); + float WindowToCanvasY(float y, bool clamped = true); + virtual void draw(); + virtual ~GLBackend(); + void makeCurrent(); + void show(bool s); + void setBackgroundColor(float r, float g, float b); + float getDeltaTime(); + float getGlobalTime(); + void getMouseButtonPressed(bool * button_array); + void getMouseButtonReleased(bool * button_array); + void getMouseButtonState(bool * button_array); + void getMousePosition(int * x, int * y); + void getPrevMousePosition(int * x, int * y); + bool isMouseDragging(); + void setCanvasMode(int m); + void setCanvasSize(float w, float h); + void setFullscreen(bool fs); + + void playSound(std::string soundfile, float volume, bool looping = false); + void playMusic(std::string soundfile, float volume, bool looping = true, int fade_time = 0); + void stopMusic(int fade_time = 0); + }; + +}
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