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/*
* Modification History
*
* 2000-December-7 Jason Rohrer
* Created.
*
* 2000-December-8 Jason Rohrer
* Changed so that key state functions take a string instead of
* an integer vkey code.
*
* 2001-May-2 Jason Rohrer
* Changed to use more standard SDL include location.
*
* 2006-June-26 Jason Rohrer
* Added function to get events that are waiting in the queue.
*/
#include "minorGems/ui/Keyboard.h"
#include <SDL/SDL.h>
#include <string.h>
/**
* Note: Linux implementation:
* Requires that a ScreenGraphics be constructed before accessing the keyboard.
*/
// prototypes:
/**
* Maps an ascii string description of a key, such as "a", to an SDL keycode.
*
* @param inKeyDescription an ascii description of a key.
*
* @return the SDL keycode.
*/
int getKeyCode( const char *inKeyDescription );
/**
* Maps a keycode to an ascii character.
*
* @param inSDLKeycode the keycode.
*
* @return the ascii character, or -1 if the keycode is not mappable to ascii.
*/
int getKeyASCII( int inSDLKeycode );
#define M_KEY SDLK_m
#define N_KEY SDLK_n
#define S_KEY SDLK_s
#define Q_KEY SDLK_q
#define L_KEY SDLK_l
#define R_KEY SDLK_r
#define T_KEY SDLK_t
//char Keyboard::getKeyDown( int vKeyCode ) {
char Keyboard::getKeyDown( const char *inKeyDescription ) {
SDL_PumpEvents();
Uint8 *keys;
keys = SDL_GetKeyState( NULL );
return keys[ getKeyCode( inKeyDescription ) ] == SDL_PRESSED;
}
//char Keyboard::getKeyUp( int vKeyCode ) {
char Keyboard::getKeyUp( const char *inKeyDescription ) {
SDL_PumpEvents();
Uint8 *keys;
keys = SDL_GetKeyState( NULL );
return keys[ getKeyCode( inKeyDescription ) ] == SDL_RELEASED;
}
int Keyboard::getKeyPressedEvent() {
SDL_Event event;
if( SDL_PollEvent( &event ) ) {
switch( event.type ) {
case SDL_KEYDOWN:
return getKeyASCII( event.key.keysym.sym );
break;
}
}
else {
return -1;
}
}
int getKeyCode( const char *inKeyDescription ) {
// note that strcmp functions return 0 if strings match
if( !strcasecmp( inKeyDescription, "m" ) ) {
return SDLK_m;
}
else if( !strcasecmp( inKeyDescription, "n" ) ) {
return SDLK_n;
}
else if( !strcasecmp( inKeyDescription, "s" ) ) {
return SDLK_s;
}
else if( !strcasecmp( inKeyDescription, "q" ) ) {
return SDLK_q;
}
else if( !strcasecmp( inKeyDescription, "l" ) ) {
return SDLK_l;
}
else if( !strcasecmp( inKeyDescription, "r" ) ) {
return SDLK_r;
}
else if( !strcasecmp( inKeyDescription, "t" ) ) {
return SDLK_t;
}
}
int getKeyASCII( int inSDLKeycode ) {
switch( inSDLKeycode ) {
case SDLK_m:
return 'm';
break;
case SDLK_n:
return 'n';
break;
case SDLK_s:
return 's';
break;
case SDLK_q:
return 'a';
break;
case SDLK_l:
return 'l';
break;
case SDLK_r:
return 'r';
break;
case SDLK_t:
return 't';
break;
default:
return -1;
break;
}
}
/*
#define M_KEY SDLK_m
#define N_KEY SDLK_n
#define S_KEY SDLK_s
#define Q_KEY SDLK_q
#define L_KEY SDLK_l
#define R_KEY SDLK_r
#define T_KEY SDLK_t
*/
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