78 lines
2.2 KiB
C
78 lines
2.2 KiB
C
#include <SDL2/SDL.h>
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#include <stdlib.h>
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#include "cgdoom.h"
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#include "doomdef.h"
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/* Copy of the keyboard state. */
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static Uint8 *st_prev=NULL, *st_now=NULL;
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static Uint8 *ScanKeyboard(void)
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{
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int length;
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const Uint8 *state = SDL_GetKeyboardState(&length);
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return memcpy(malloc(length), state, length);
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}
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static int DoomKeyToKeycode(int key)
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{
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switch(key)
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{
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/* Normal Doom keys */
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case KEY_LEFTARROW: return SDL_SCANCODE_LEFT;
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case KEY_RIGHTARROW: return SDL_SCANCODE_RIGHT;
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case KEY_UPARROW: return SDL_SCANCODE_UP;
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case KEY_DOWNARROW: return SDL_SCANCODE_DOWN;
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/* case ' ': return KEYCODE_SQUARE;
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case KEY_RCTRL: return KEYCODE_ALPHA;
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case '1': return KEYCODE_F1;
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case '2': return KEYCODE_F2;
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case '3': return KEYCODE_F3;
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case '4': return KEYCODE_F4;
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case '5': return KEYCODE_F5;
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case '6': return KEYCODE_F6;
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case '7': return KEYCODE_SHIFT;
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case KEY_TAB: return KEYCODE_EXIT;
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case KEY_PAUSE: return KEYCODE_OPTN;
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case KEY_SLEFTARROW: return KEYCODE_0;
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case KEY_SRIGHTARROW: return KEYCODE_DOT;
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case KEY_ESCAPE: return KEYCODE_MENU;
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case KEY_ENTER: return KEYCODE_EXE; */
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/* Special CGDoom keys */
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/* case SKEY_CHEAT: return KEYCODE_POWER;
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case SKEY_DECVP: return KEYCODE_MINUS;
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case SKEY_INCVP: return KEYCODE_PLUS;
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case SKEY_NOCLIP: return KEYCODE_ARROW;
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case SKEY_GAMMA: return KEYCODE_FRAC;
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case SKEY_FREEMEM: return KEYCODE_FD;
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case SKEY_FPSCOUNTER: return KEYCODE_LEFTP;
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case SKEY_FRAMESKIP: return KEYCODE_VARS; */
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default: return -1;
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}
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}
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static int KeyDown(Uint8 *state, int key)
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{
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int code = DoomKeyToKeycode(key);
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return (code < 0 || state == NULL) ? 0 : state[code];
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}
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void UpdateKeyboardState(void)
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{
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free(st_prev);
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st_prev = st_now;
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st_now = ScanKeyboard();
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}
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int KeyWasJustPressed(int key)
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{
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return !KeyDown(st_prev, key) && KeyDown(st_now, key);
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}
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int KeyWasJustReleased(int key)
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{
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return KeyDown(st_prev, key) && !KeyDown(st_now, key);
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}
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