src/client/window.c

   1 #include <stdio.h>
   2 #include <stdlib.h>
   3 #include <GL/glew.h>
   4 #include <GL/gl.h>
   5 #include "client/client_config.h"
   6 #include "client/debug_menu.h"
   7 #include "client/game.h"
   8 #include "client/opengl.h"
   9 #include "client/gui.h"
  10 #include "client/input.h"
  11 #include "client/window.h"
  12
  13 struct Window window;
  14
  15 static int small_x, small_y, small_width, small_height;
  16
  17 static void update_projection()
  18 {
  19         mat4x4_perspective(window.projection,
  20                 window.fov / 180.0f * M_PI,
  21                 (float) window.width / (float) window.height,
  22                 0.01f, client_config.view_distance + 28.0f);
  23 }
  24
  25 static void framebuffer_size_callback(__attribute__((unused)) GLFWwindow *handle, int width, int height)
  26 {
  27         glViewport(0, 0, width, height); GL_DEBUG
  28         window.width = width;
  29         window.height = height;
  30
  31         if (!window.fullscreen) {
  32                 small_width = width;
  33                 small_height = height;
  34         }
  35
  36         update_projection();
  37         gui_update_projection();
  38 }
  39
  40 static void cursor_pos_callback(__attribute__((unused)) GLFWwindow *handle, double x, double y)
  41 {
  42         input_cursor(x, y);
  43 }
  44
  45 static void window_pos_callback(__attribute__((unused)) GLFWwindow *handle, int x, int y)
  46 {
  47         if (!window.fullscreen) {
  48                 small_x = x;
  49                 small_y = y;
  50         }
  51 }
  52
  53 static void mouse_button_callback(__attribute__((unused)) GLFWwindow *handle, int button, int action, __attribute__((unused)) int mods)
  54 {
  55         if ((button == GLFW_MOUSE_BUTTON_RIGHT || button == GLFW_MOUSE_BUTTON_LEFT) && action == GLFW_PRESS)
  56                 input_click(button == GLFW_MOUSE_BUTTON_LEFT);
  57 }
  58
  59 static void error_callback(__attribute__((unused)) int error, const char *description)
  60 {
  61         fprintf(stderr, "[warning] GLFW error: %s\n", description);
  62 }
  63
  64 void window_enter_fullscreen()
  65 {
  66         window.fullscreen = true;
  67         GLFWmonitor *monitor = glfwGetPrimaryMonitor();
  68         const GLFWvidmode *vidmode = glfwGetVideoMode(monitor);
  69         glfwSetWindowMonitor(window.handle, monitor, 0, 0, vidmode->width, vidmode->height, 0);
  70
  71         debug_menu_changed(ENTRY_FULLSCREEN);
  72 }
  73
  74 void window_exit_fullscreen()
  75 {
  76         window.fullscreen = false;
  77         glfwSetWindowMonitor(window.handle, NULL, small_x, small_y, small_width, small_height, 0);
  78
  79         debug_menu_changed(ENTRY_FULLSCREEN);
  80 }
  81
  82 void window_init()
  83 {
  84         if(!glfwInit()) {
  85                 fprintf(stderr, "[error] failed to initialize GLFW\n");
  86                 abort();
  87         }
  88
  89         glfwSetErrorCallback(&error_callback);
  90
  91         glfwWindowHint(GLFW_SAMPLES, client_config.antialiasing);
  92         glfwWindowHint(GLFW_CONTEXT_VERSION_MAJOR, 3);
  93         glfwWindowHint(GLFW_CONTEXT_VERSION_MINOR, 3);
  94         glfwWindowHint(GLFW_OPENGL_PROFILE, GLFW_OPENGL_CORE_PROFILE);
  95
  96         window.width = 1250;
  97         window.height = 750;
  98         window.handle = glfwCreateWindow(window.width, window.height, "Dragonblocks", NULL, NULL);
  99         window.fullscreen = false;
 100         window.fov = 86.1f;
 101         update_projection();
 102
 103         small_width = window.width;
 104         small_height = window.height;
 105
 106         if (!window.handle) {
 107                 fprintf(stderr, "[error] failed to create window (does your machine support OpenGL 3.3?)\n");
 108                 glfwTerminate();
 109                 abort();
 110         }
 111
 112         glfwMakeContextCurrent(window.handle);
 113
 114         if (!client_config.vsync)
 115                 glfwSwapInterval(0);
 116
 117         if (glewInit() != GLEW_OK) {
 118                 fprintf(stderr, "[error] failed to initialize GLEW\n");
 119                 abort();
 120         }
 121
 122         glfwSetFramebufferSizeCallback(window.handle, &framebuffer_size_callback);
 123         glfwSetCursorPosCallback(window.handle, &cursor_pos_callback);
 124         glfwSetWindowPosCallback(window.handle, &window_pos_callback);
 125         glfwSetMouseButtonCallback(window.handle, &mouse_button_callback);
 126 }