1 // splash.cxx -- draws the initial splash screen
3 // Written by Curtis Olson, started July 1998. (With a little looking
4 // at Freidemann's panel code.) :-)
6 // Copyright (C) 1997 Michele F. America - nomimarketing@mail.telepac.pt
8 // This program is free software; you can redistribute it and/or
9 // modify it under the terms of the GNU General Public License as
10 // published by the Free Software Foundation; either version 2 of the
11 // License, or (at your option) any later version.
13 // This program is distributed in the hope that it will be useful, but
14 // WITHOUT ANY WARRANTY; without even the implied warranty of
15 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 // General Public License for more details.
18 // You should have received a copy of the GNU General Public License
19 // along with this program; if not, write to the Free Software
20 // Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
29 #ifdef SG_MATH_EXCEPTION_CLASH
39 #include <simgear/compiler.h>
43 #include <simgear/debug/logstream.hxx>
44 #include <simgear/screen/texture.hxx>
45 #include <simgear/math/sg_random.h>
46 #include <simgear/misc/sg_path.hxx>
48 #include "globals.hxx"
49 #include "fg_props.hxx"
55 static SGTexture splash;
58 // Initialize the splash screen
59 void fgSplashInit ( const char *splash_texture ) {
60 SG_LOG( SG_GENERAL, SG_INFO, "Initializing splash screen" );
64 SGPath tpath( globals->get_fg_root() );
65 if (splash_texture == NULL || !strcmp(splash_texture, "")) {
66 // load in the texture data
67 int num = (int)(sg_random() * 5.0 + 1.0);
69 snprintf(num_str, 4, "%d", num);
71 tpath.append( "Textures/Splash" );
72 tpath.concat( num_str );
73 tpath.concat( ".rgb" );
75 tpath.append( splash_texture );
77 splash.read_rgb_texture(tpath.c_str());
81 SGPath fg_tpath = tpath;
82 fg_tpath.concat( ".gz" );
84 splash.read_rgb_texture(fg_tpath.c_str());
85 if ( !splash.usable() )
87 SG_LOG( SG_GENERAL, SG_ALERT,
88 "Error in loading splash screen texture " << tpath.str() );
97 // Update the splash screen with progress specified from 0.0 to 1.0
98 void fgSplashUpdate ( double progress, float alpha ) {
99 int xmin, ymin, xmax, ymax;
103 if ( !fgGetInt("/sim/startup/xsize")
104 || !fgGetInt("/sim/startup/ysize") ) {
108 xmin = (fgGetInt("/sim/startup/xsize") - xsize) / 2;
111 ymin = (fgGetInt("/sim/startup/ysize") - ysize) / 2;
114 glMatrixMode(GL_PROJECTION);
117 gluOrtho2D(0, fgGetInt("/sim/startup/xsize"),
118 0, fgGetInt("/sim/startup/ysize"));
119 glMatrixMode(GL_MODELVIEW);
123 glDisable(GL_DEPTH_TEST);
124 glDisable(GL_LIGHTING);
126 // draw the background
127 glColor4f( 0.0, 0.0, 0.0, alpha );
129 glVertex2f(0.0, 0.0);
130 glVertex2f(fgGetInt("/sim/startup/xsize"), 0.0);
131 glVertex2f(fgGetInt("/sim/startup/xsize"), fgGetInt("/sim/startup/ysize"));
132 glVertex2f(0.0, fgGetInt("/sim/startup/ysize"));
136 glEnable(GL_TEXTURE_2D);
138 glTexEnvf(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE);
140 glColor4f( 1.0, 1.0, 1.0, alpha );
142 glTexCoord2f(0.0, 0.0); glVertex2f(xmin, ymin);
143 glTexCoord2f(1.0, 0.0); glVertex2f(xmax, ymin);
144 glTexCoord2f(1.0, 1.0); glVertex2f(xmax, ymax);
145 glTexCoord2f(0.0, 1.0); glVertex2f(xmin, ymax);
148 glEnable(GL_DEPTH_TEST);
149 glEnable(GL_LIGHTING);
150 glDisable(GL_TEXTURE_2D);
152 glMatrixMode(GL_PROJECTION);
154 glMatrixMode(GL_MODELVIEW);