private int DirKeyMap(SDL_keysym keysym)
{
// map directions to key symbols
for (int i = 0; i < dirMap.Length; i++)
{
if (dirMap[i].Symbol == keysym.sym)
{
return(dirMap[i].Value);
}
}
return(0xffff);
}
private InputEvent EventKeyDown(SDL_keysym keysym)
{
InputEvent e = null;
switch (keysym.sym)
{
case SDL_Keycode.SDLK_KP5:
case SDL_Keycode.SDLK_CLEAR:
e = this.stopEgoEvent;
break;
case SDL_Keycode.SDLK_SCROLLOCK:
this.interpreter.ToggleTrace();
break;
default:
int index = -1;
for (int i = 0; i < keySpecial.Length; i++)
{
if (keySpecial[i].Symbol == keysym.sym)
{
index = i;
break;
}
}
if (index != -1)
{
if (keySpecial[index].Value == 0)
{
// first press (not repeat)
for (int i = 0; i < keySpecial.Length; i++)
{
keySpecial[i].Value = 0;
}
keySpecial[index].Value++;
e = this.KeyParse(keysym);
}
}
else
{
// normal key
e = this.KeyParse(keysym);
}
break;
}
return(e);
}
private int SystemKeyMap(SDL_keysym keysym)
{
if (keysym.sym >= SDL_Keycode.SDLK_F1 && keysym.sym <= SDL_Keycode.SDLK_F10)
{
return((keysym.sym - SDL_Keycode.SDLK_F1 + 0x3b) << 8);
}
else if ((keysym.mod & SDL_Keymod.KMOD_ALT) != 0)
{
if (keysym.sym >= SDL_Keycode.SDLK_a && keysym.sym <= SDL_Keycode.SDLK_z)
{
return(systemAltAtoZMap[keysym.sym - SDL_Keycode.SDLK_a] << 8);
}
}
else if ((keysym.mod & SDL_Keymod.KMOD_CTRL) != 0)
{
if (keysym.sym >= SDL_Keycode.SDLK_a && keysym.sym <= SDL_Keycode.SDLK_z)
{
return(keysym.sym - SDL_Keycode.SDLK_a + 1);
}
}
else
{
switch (keysym.sym)
{
case SDL_Keycode.SDLK_TAB:
return(InputEventAscii.Tab);
case SDL_Keycode.SDLK_ESCAPE:
return(InputEventAscii.Esc);
case SDL_Keycode.SDLK_BACKSPACE:
case SDL_Keycode.SDLK_DELETE:
return(InputEventAscii.Backspace);
case SDL_Keycode.SDLK_KP_ENTER:
case SDL_Keycode.SDLK_RETURN:
return(InputEventAscii.Enter);
default:
if ((keysym.unicode & 0xff80) == 0 && keysym.unicode != 0)
{
return(keysym.unicode & 0x7f);
}
return(keysym.unicode & 0xff);
}
}
return(0);
}
private InputEvent EventKeyUp(SDL_keysym keysym)
{
InputEvent e = null;
for (int i = 0; i < keySpecial.Length; i++)
{
if (keySpecial[i].Symbol == keysym.sym && keySpecial[i].Value != 0)
{
keySpecial[i].Value = 0;
if (this.interpreter.State.WalkMode == WalkMode.HoldKey)
{
e = this.stopEgoEvent;
break;
}
}
}
return(e);
}
private InputEvent KeyParse(SDL_keysym keysym)
{
// if the key is a direction, then map it to that
// else, return the ascii thing back
InputEvent e = new InputEvent();
int direction = this.DirKeyMap(keysym);
if (direction != 0xffff)
{
e.Type = InputEventType.Direction;
e.Data = direction;
}
else
{
e.Type = InputEventType.Ascii;
e.Data = this.SystemKeyMap(keysym);
}
return(e);
}
