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DOS: Keyboard input sort of works

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UnknownShadow200 2024-10-01 21:04:20 +10:00
parent dd1812a4ed
commit 66fe5a9d00
1 changed files with 80 additions and 0 deletions
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80
src/Window_MSDOS.c
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@ -10,6 +10,7 @@
#include <dpmi.h>
#include <sys/nearptr.h>
#include <pc.h>
#include <bios.h>
#define INT_VGA 0x10
#define VGA_CMD_SETMODE 0x0000
@ -80,6 +81,82 @@ static void Cursor_DoSetVisible(cc_bool visible) {
__dpmi_int(INT_MOUSE, &regs);
}
/*########################################################################################################################*
*----------------------------------------------------Keyboard support-----------------------------------------------------*
*#########################################################################################################################*/
// TODO use proper keyboard interrupts
static float event_time;
static float press_start[256];
// TODO missing numpad codes
static const cc_uint8 key_map[] = {
/* 0x00 */ 0, CCKEY_ESCAPE, '1', '2', '3', '4', '5', '6',
/* 0x08 */ '7', '8', '9', '0', CCKEY_MINUS, CCKEY_EQUALS, CCKEY_BACKSPACE, CCKEY_TAB,
/* 0x10 */ 'Q', 'W', 'E', 'R', 'T', 'Y', 'U', 'I',
/* 0x18 */ 'O', 'P', CCKEY_LBRACKET, CCKEY_RBRACKET, CCKEY_ENTER, 0, 'A', 'S',
/* 0x20 */ 'D', 'F', 'G', 'H', 'J', 'K', 'L', CCKEY_SEMICOLON,
/* 0x28 */ CCKEY_QUOTE, CCKEY_TILDE, 0, CCKEY_BACKSLASH, 'Z', 'X', 'C', 'V',
/* 0x30 */ 'B', 'N', 'M', CCKEY_COMMA, CCKEY_PERIOD, CCKEY_SLASH, 0, 0,
/* 0x38 */ 0, CCKEY_SPACE, 0, CCKEY_F1, CCKEY_F2, CCKEY_F3, CCKEY_F4, CCKEY_F5,
/* 0x40 */ CCKEY_F6, CCKEY_F7, CCKEY_F8, CCKEY_F9, CCKEY_F10, 0, 0, CCKEY_HOME,
/* 0x48 */ CCKEY_UP, CCKEY_PAGEUP, 0, CCKEY_LEFT, 0, CCKEY_RIGHT, 0, CCKEY_END,
/* 0x50 */ CCKEY_DOWN, CCKEY_PAGEDOWN, 0, 0, 0, 0, 0, 0,
/* 0x58 */ 0, 0, 0, 0, 0, 0, 0, 0,
/* 0x60 */ 0, 0, 0, 0, 0, 0, 0, 0,
/* 0x68 */ 0, 0, 0, 0, 0, 0, 0, 0,
/* 0x70 */ 0, 0, 0, 0, 0, 0, 0, 0,
/* 0x78 */ 0, 0, 0, 0, 0, 0, 0, 0,
/* 0x80 */ 0, 0, 0, 0, 0, CCKEY_F11, CCKEY_F12, 0,
};
static int MapKey(unsigned key) { return key < Array_Elems(key_map) ? key_map[key] : 0; }
static void Keyboard_UpdateState(float delta) {
event_time += delta;
// Auto release keys after a while
for (int i = 0; i < 256; i++)
{
if (press_start[i] && (event_time - press_start[i]) > 1.0f) {
Input_SetReleased(MapKey(i));
press_start[i] = 0.0f;
}
}
}
static void Keyboard_PollInput(void) {
if (_bios_keybrd(_NKEYBRD_READY) == 0) return;
unsigned raw = _bios_keybrd(_NKEYBRD_READ);
// Lower 8 bits contain ascii code
unsigned code = raw & 0xFF;
if (code >= 32 && code < 127) {
Event_RaiseInt(&InputEvents.Press, code);
}
// Higher 8 bits contain raw code
raw = (raw >> 8) & 0xFF;
int key = MapKey(raw);
if (!key) return;
Input_SetPressed(key);
press_start[raw] = event_time;
}
static void Keyboard_UpdateModifiers(void) {
unsigned mods = _bios_keybrd(_KEYBRD_SHIFTSTATUS);
Input_SetNonRepeatable(CCKEY_RSHIFT, mods & 0x02);
Input_SetNonRepeatable(CCKEY_LCTRL, mods & 0x04);
Input_SetNonRepeatable(CCKEY_LALT, mods & 0x08);
Input_SetNonRepeatable(CCKEY_SCROLLLOCK, mods & 0x10);
Input_SetNonRepeatable(CCKEY_NUMLOCK, mods & 0x20);
Input_SetNonRepeatable(CCKEY_CAPSLOCK, mods & 0x40);
Input_SetNonRepeatable(CCKEY_INSERT, mods & 0x80);
}
/*########################################################################################################################*
*--------------------------------------------------Public implementation--------------------------------------------------*
*#########################################################################################################################*/
@ -156,6 +233,9 @@ void Window_RequestClose(void) {
void Window_ProcessEvents(float delta) {
Mouse_Poll();
Keyboard_PollInput();
Keyboard_UpdateModifiers();
Keyboard_UpdateState(delta);
}
void Gamepads_Init(void) {