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Print error if running VGA game in graphics mode.

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This commit is contained in:
Jonas 'Sortie' Termansen 2012-09-08 22:46:20 +02:00
parent 46d02b784b
commit 8595ec83da
3 changed files with 63 additions and 0 deletions
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21
games/conway.cpp
View file

@ -63,6 +63,27 @@ bool FlushVGA()
int Init() int Init()
{ {
bool has_vga_mode_set = true;
FILE* modefp = fopen("/dev/video/mode", "r");
if ( modefp )
{
char* mode = NULL;
size_t modesize;
if ( 0 <= getline(&mode, &modesize, modefp) )
{
if ( strcmp(mode, "driver=none\n") != 0 )
has_vga_mode_set = false;
free(mode);
}
fclose(modefp);
}
if ( !has_vga_mode_set )
{
fprintf(stderr, "Sorry, this game only works in VGA mode.\n");
return 1;
}
vgafd = open("/dev/vga", O_RDWR); vgafd = open("/dev/vga", O_RDWR);
if ( vgafd < 0 ) { error(0, errno, "unable to open vga device /dev/vga"); return 1; } if ( vgafd < 0 ) { error(0, errno, "unable to open vga device /dev/vga"); return 1; }

21
games/pong.cpp
View file

@ -82,6 +82,27 @@ bool FlushVGA()
int Init() int Init()
{ {
bool has_vga_mode_set = true;
FILE* modefp = fopen("/dev/video/mode", "r");
if ( modefp )
{
char* mode = NULL;
size_t modesize;
if ( 0 <= getline(&mode, &modesize, modefp) )
{
if ( strcmp(mode, "driver=none\n") != 0 )
has_vga_mode_set = false;
free(mode);
}
fclose(modefp);
}
if ( !has_vga_mode_set )
{
fprintf(stderr, "Sorry, this game only works in VGA mode.\n");
return 1;
}
vgafd = open("/dev/vga", O_RDWR); vgafd = open("/dev/vga", O_RDWR);
if ( vgafd < 0 ) { error(0, errno, "unable to open vga device /dev/vga"); return 1; } if ( vgafd < 0 ) { error(0, errno, "unable to open vga device /dev/vga"); return 1; }

21
games/snake.cpp
View file

@ -100,6 +100,27 @@ bool FlushVGA()
int Init() int Init()
{ {
bool has_vga_mode_set = true;
FILE* modefp = fopen("/dev/video/mode", "r");
if ( modefp )
{
char* mode = NULL;
size_t modesize;
if ( 0 <= getline(&mode, &modesize, modefp) )
{
if ( strcmp(mode, "driver=none\n") != 0 )
has_vga_mode_set = false;
free(mode);
}
fclose(modefp);
}
if ( !has_vga_mode_set )
{
fprintf(stderr, "Sorry, this game only works in VGA mode.\n");
return 1;
}
vgafd = open("/dev/vga", O_RDWR); vgafd = open("/dev/vga", O_RDWR);
if ( vgafd < 0 ) { error(0, errno, "unable to open vga device /dev/vga"); return 1; } if ( vgafd < 0 ) { error(0, errno, "unable to open vga device /dev/vga"); return 1; }