restructure zephr

zephr.c

@@ -0,0 +1,111 @@
+#include <stdio.h>
+
+#include <X11/Xlib.h>
+#include <glad/glx.h>
+
+#include "zephr.h"
+#include "audio.h"
+#include "x11.h"
+#include "ui.h"
+#include "timer.h"
+
+Display *display;
+Window window;
+
+Context zephr_context = {0};
+
+int init_zephr(const char* font_path, const char* window_title, Size window_size, Color *clear_color) {
+  int res = audio_init();
+  if (res != 0) {
+    printf("[ERROR]: failed to initialize audio\n");
+    return 1;
+  }
+
+  res = init_x11(&display, &window, window_title, window_size.width, window_size.height);
+  if (res < 0) return 1;
+
+  res = init_ui(font_path, (Size){ .width = window_size.width, .height = window_size.height });
+  if (res != 0) {
+    printf("[ERROR]: failed to initialize ui\n");
+    return 1;
+  }
+
+  if (clear_color) {
+    zephr_context.clear_color = *clear_color;
+  } else {
+    zephr_context.clear_color = (Color){0.0, 0.0, 0.0, 1.0};
+  }
+
+  get_screen_size(display, &zephr_context.screen_size.width, &zephr_context.screen_size.height);
+  start_internal_timer();
+
+  return 0;
+}
+
+void deinit_zephr() {
+  close_x11(&display, &window);
+  audio_close();
+}
+
+bool zephr_should_quit() {
+  // TODO: input events
+  // TODO: window events
+  // TODO: ui update??
+
+  while (XPending(display)) {
+    XEvent xev;
+    XNextEvent(display, &xev);
+
+    if (xev.type == ConfigureNotify) {
+      XConfigureEvent xce = xev.xconfigure;
+
+      if (xce.width != zephr_context.window_size.width || xce.height != zephr_context.window_size.height) {
+        zephr_context.window_size = (Size){ .width = xce.width, .height = xce.height };
+        zephr_context.projection = orthographic_projection_2d(0.f, xce.width, xce.height, 0.f);
+        resize_x11_window(display, window);
+      }
+
+    } else if (xev.type == KeyPress) {
+      if (XLookupKeysym(&xev.xkey, 0) == XK_Escape ||
+          (XLookupKeysym(&xev.xkey, 0) == XK_q && xev.xkey.state & ControlMask)) {
+        zephr_context.should_quit = true;
+        break;
+      } else {
+        /* handle_keypress(xev, &game); */
+      }
+    } else if (xev.type == ButtonPress) {
+      /* if (xev.xbutton.button == Button1) { */
+      /*   int x = xev.xbutton.x; */
+      /*   int y = xev.xbutton.y; */
+      /*   do_selection(&game, x, y, width, height, x_scale, y_scale); */
+      /* } */
+    }
+  }
+
+  float r = zephr_context.clear_color.r;
+  float g = zephr_context.clear_color.g;
+  float b = zephr_context.clear_color.b;
+  float a = zephr_context.clear_color.a;
+  glClearColor(r, g, b, a);
+  glClear(GL_COLOR_BUFFER_BIT);
+
+  /* update_ui(); */
+  audio_update();
+
+
+  return zephr_context.should_quit;
+}
+
+// This MUST be called at the end of the frame
+void zephr_swap_buffers() {
+  glXSwapBuffers(display, window);
+}
+
+Size zephr_get_window_size() {
+  return zephr_context.window_size;
+}
+
+// Has to be called after calling init_zephr()
+void zephr_make_window_non_resizable() {
+  x11_make_window_non_resizable(display, window, zephr_context.window_size.width, zephr_context.window_size.height);
+}