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
40 #include <simgear/compiler.h>
44 #include <simgear/debug/logstream.hxx>
45 #include <simgear/screen/texture.hxx>
46 #include <simgear/math/sg_random.h>
47 #include <simgear/misc/sg_path.hxx>
49 #include "globals.hxx"
50 #include "fg_props.hxx"
54 static const int fontsize = 19;
55 static const char fontname[] = "default.txf";
56 static const char *text = 0;
59 static SGTexture splash;
60 static fntTexFont font;
61 static fntRenderer info;
64 // Initialize the splash screen
65 void fgSplashInit ( const char *splash_texture ) {
68 if (!fgGetBool("/sim/startup/splash-screen"))
71 SG_LOG( SG_GENERAL, SG_INFO, "Initializing splash screen" );
75 char* envp = ::getenv("FG_FONTS");
79 fontpath.set(globals->get_fg_root());
80 fontpath.append("Fonts");
82 SGPath path(fontpath);
83 path.append(fontname);
85 font.load((char *)path.c_str());
88 info.setPointSize(fontsize);
93 SGPath tpath( globals->get_fg_root() );
94 if (splash_texture == NULL || !strcmp(splash_texture, "")) {
95 // load in the texture data
96 int num = (int)(sg_random() * 5.0 + 1.0);
98 snprintf(num_str, 4, "%d", num);
100 tpath.append( "Textures/Splash" );
101 tpath.concat( num_str );
102 tpath.concat( ".rgb" );
104 tpath.append( splash_texture );
106 splash.read_rgb_texture(tpath.c_str());
107 if (!splash.usable())
110 SGPath fg_tpath = tpath;
111 fg_tpath.concat( ".gz" );
113 splash.read_rgb_texture(fg_tpath.c_str());
114 if ( !splash.usable() )
116 SG_LOG( SG_GENERAL, SG_ALERT,
117 "Error in loading splash screen texture " << tpath.str() );
126 void fgSplashProgress ( const char *s )
133 // Update the splash screen with alpha specified from 0.0 to 1.0
134 void fgSplashUpdate ( float alpha ) {
135 int screen_width = fgGetInt("/sim/startup/xsize", 0);
136 int screen_height = fgGetInt("/sim/startup/ysize", 0);
138 if (!screen_width || !screen_height)
141 int size = screen_width < (screen_height - 5 * fontsize)
142 ? screen_width : screen_height - 5 * fontsize;
146 int xmin, ymin, xmax, ymax;
147 xmin = (screen_width - size) / 2;
150 ymin = (screen_height - size) / 2;
153 glMatrixMode(GL_PROJECTION);
156 gluOrtho2D(0, screen_width, 0, screen_height);
157 glMatrixMode(GL_MODELVIEW);
161 glDisable(GL_DEPTH_TEST);
162 glDisable(GL_LIGHTING);
164 // draw the background
165 glColor4f( 0.0, 0.0, 0.0, alpha );
167 glVertex2f(0.0, 0.0);
168 glVertex2f(screen_width, 0.0);
169 glVertex2f(screen_width, screen_height);
170 glVertex2f(0.0, screen_height);
174 if (fgGetBool("/sim/startup/splash-screen", true)) {
175 glEnable(GL_TEXTURE_2D);
177 glTexEnvf(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE);
179 glColor4f( 1.0, 1.0, 1.0, alpha );
181 glTexCoord2f(0.0, 0.0); glVertex2f(xmin, ymin);
182 glTexCoord2f(1.0, 0.0); glVertex2f(xmax, ymin);
183 glTexCoord2f(1.0, 1.0); glVertex2f(xmax, ymax);
184 glTexCoord2f(0.0, 1.0); glVertex2f(xmin, ymax);
188 if (text && fgGetBool("/sim/startup/splash-progress", true)) {
189 glEnable(GL_ALPHA_TEST);
191 glAlphaFunc(GL_GREATER, 0.1f);
192 glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
193 glDisable(GL_CULL_FACE);
195 float left, right, bot, top;
198 glColor3f(1.0, 0.9, 0.0);
199 font.getBBox(text, fontsize, 0, &left, &right, &bot, &top);
200 info.start2f((screen_width - right) / 2.0, 10.0 - bot);
203 const char *s = fgGetString("/sim/startup/splash-title", "");
204 font.getBBox(s, fontsize, 0, &left, &right, &bot, &top);
205 info.start2f((screen_width - right) / 2.0, screen_height - top - bot - 10.0);
210 glEnable(GL_DEPTH_TEST);
211 glEnable(GL_LIGHTING);
212 glDisable(GL_TEXTURE_2D);
214 glMatrixMode(GL_PROJECTION);
216 glMatrixMode(GL_MODELVIEW);