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#include "project.h"
#ifdef MAP_NULL
void
map_output (int *computer, int *x, int *y)
{
(*computer)--;
}
#elif defined(MAP_HOME)
void
map_output (int *computer, int *x, int *y)
{
switch (*computer)
{
case 1:
*computer = 5;
break;
case 2:
*computer = 4;
break;
case 3:
*computer = 0;
if (x)
*x = *x / 2;
break;
case 4:
*computer = 0;
if (x)
*x = (*x / 2) + 1024;
break;
case 5:
case 6:
case 7:
(*computer) -= 4;
break;
}
}
#endif
int
map_grace_left (int computer)
{
int console = layout_computer_to_console (computer);
int cl = layout_console_to_computer (console - 1);
if ((cl < 1) || (cl > N_COMPUTER))
return 1;
map_output (&computer, NULL, NULL);
map_output (&cl, NULL, NULL);
return cl != computer;
}
int
map_grace_right (int computer)
{
int console = layout_computer_to_console (computer);
int cl = layout_console_to_computer (console + 1);
if ((cl < 1) || (cl > N_COMPUTER))
return 1;
map_output (&computer, NULL, NULL);
map_output (&cl, NULL, NULL);
return cl != computer;
}
int
map_switch_left (int *cc)
{
int computer;
int console;
int ok;
for (computer = *cc - 1; computer > 0; computer--)
{
/* First see if this computer is being displayed - if so easy*/
if (layout_computer_to_console (computer) > 0)
{
*cc = computer;
layout_status (*cc);
return 1;
}
/* We're switching left so try console from the left to the right */
ok = 0;
for (console = 1; console <= N_CONSOLE; ++console)
{
if (layout_possible (console, computer))
{
layout_map (console, computer);
if (!ok)
*cc = computer;
computer++;
ok++;
}
}
if (ok)
{
layout_status (*cc);
return 1;
}
}
return 0;
}
int
map_switch_right (int *cc)
{
int computer;
int console;
int ok;
for (computer = *cc + 1; computer <= N_COMPUTER; computer++)
{
/* First see if this computer is being displayed - if so easy*/
if (layout_computer_to_console (computer) > 0)
{
*cc = computer;
layout_status (*cc);
return 1;
}
/* We're switching right so try console from the left to the right */
ok = 0;
for (console = N_CONSOLE; console > 0; --console)
{
if (layout_possible (console, computer))
{
layout_map (console, computer);
if (!ok)
*cc = computer;
computer--;
ok++;
}
}
if (ok)
{
layout_status (*cc);
return 1;
}
}
return 0;
}
int
map_init (void)
{
return layout_init ();
}
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