src/graphics/render.c

   1 /************************************************************************
   2 * object.c
   3 * voxelands - 3d voxel world sandbox game
   4 * Copyright (C) Lisa 'darkrose' Milne 2016 <lisa@ltmnet.com>
   5 *
   6 * This program is free software: you can redistribute it and/or modify
   7 * it under the terms of the GNU General Public License as published by
   8 * the Free Software Foundation, either version 3 of the License, or
   9 * (at your option) any later version.
  10 *
  11 * This program is distributed in the hope that it will be useful, but
  12 * WITHOUT ANY WARRANTY; without even the implied warranty of
  13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
  14 * See the GNU General Public License for more details.
  15 *
  16 * You should have received a copy of the GNU General Public License
  17 * along with this program.  If not, see <http://www.gnu.org/licenses/>
  18 ************************************************************************/
  19
  20 #include "common.h"
  21 #include "graphics.h"
  22 #include "ui.h"
  23
  24 static struct {
  25         int ticks;
  26         int tticks;
  27         int tpf;
  28         int fticks;
  29         int font_init;
  30         float dtime;
  31 } render_data = {
  32         0,
  33         0,
  34         0,
  35         0,
  36         0,
  37         0.1
  38 };
  39
  40 /* get client-side frame time */
  41 float client_dtime()
  42 {
  43         return render_data.dtime;
  44 }
  45
  46 /* clear the frame */
  47 void render_pre()
  48 {
  49         if (!render_data.ticks)
  50                 render_data.ticks = time_ticks();
  51         render_data.tpf = 1000/wm_data.frame_cap;
  52         events_main();
  53 }
  54
  55 /* render to frame */
  56 void render_post()
  57 {
  58         ui_render();
  59
  60         if (wm_data.cursor.mat) {
  61                 int mouse[2];
  62                 events_get_mouse(mouse);
  63                 render2d_quad_mat(wm_data.cursor.mat,mouse[0]+wm_data.cursor.x,mouse[1]+wm_data.cursor.y,wm_data.cursor.w,wm_data.cursor.h);
  64         }
  65
  66         /* should get this from sky when in-game */
  67         glClearColor(0, 0, 0, 1.0);
  68         glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
  69
  70         render3d();
  71
  72         render2d();
  73
  74         wm_update();
  75
  76         /* calculate a scale factor for smooth animations */
  77         render_data.tticks = interval_delay(render_data.ticks,wm_data.frame_cap);
  78         wm_data.fps = calc_fps(render_data.ticks,render_data.tticks);
  79         render_data.dtime = time_dtime(render_data.ticks);
  80         render_data.ticks = render_data.tticks;
  81 }