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typedef enum {
CONTROL_CONTROLLER,
CONTROL_MOUSE,
CONTROL_KEYBOARD,
} ControlMethod;
const ControlMethod ctrl_methods[] = {
CONTROL_METHODS
};
static ControlMethod ctrl_idx = 0;
#define MOUSE_DELTA 1
typedef struct Mouse {
int x;
int y;
} Mouse;
static Mouse mouse = {SCREEN_WIDTH / 2, SCREEN_HEIGHT / 2};
void
handle_input() {
poll_keys();
if (key_tap(KEY_L) || key_tap(KEY_R)) {
// Reset control variables on method switch.
switch (ctrl_methods[ctrl_idx]) {
case CONTROL_CONTROLLER: {
u8 *d = &device_data[0x80];
d[2] = 0;
uxn_eval_asm(PEEK2(d));
d[3] = 0;
} break;
case CONTROL_MOUSE: {
u8 *d = &device_data[0x90];
d[6] = 0;
d[7] = 0;
POKE2(d + 0x2, -10);
POKE2(d + 0x4, -10);
uxn_eval_asm(PEEK2(d));
} break;
case CONTROL_KEYBOARD: {
toggle_keyboard();
} break;
}
// Update ctrl_idx.
ctrl_idx = (ctrl_idx + 1 > (int)LEN(ctrl_methods) - 1) ? 0 : ctrl_idx + 1;
// Initialize controller variables here.
if (ctrl_methods[ctrl_idx] == CONTROL_KEYBOARD) {
toggle_keyboard();
}
}
if (ctrl_methods[ctrl_idx] == CONTROL_CONTROLLER) {
u8 *d = &device_data[0x80];
// TODO: We don't need ifs if we use KEY_INPUTS directly and maybe just
// swap some things if needed.
u8 *flag = &d[2];
if (key_tap(KEY_A)) {
*flag |= 0x01;
} else {
*flag &= ~0x01;
}
if (key_tap(KEY_B)) {
*flag |= 0x02;
} else {
*flag &= ~0x02;
}
if (key_tap(KEY_SELECT)) {
*flag |= 0x04;
} else {
*flag &= ~0x04;
}
if (key_tap(KEY_START)) {
*flag |= 0x08;
} else {
*flag &= ~0x08;
}
if (key_tap(KEY_UP)) {
*flag |= 0x10;
} else {
*flag &= ~0x10;
}
if (key_tap(KEY_DOWN)) {
*flag |= 0x20;
} else {
*flag &= ~0x20;
}
if (key_tap(KEY_LEFT)) {
*flag |= 0x40;
} else {
*flag &= ~0x40;
}
if (key_tap(KEY_RIGHT)) {
*flag |= 0x80;
} else {
*flag &= ~0x80;
}
if (key_prev != key_curr) {
uxn_eval_asm(PEEK2(d));
}
d[3] = 0;
} else if (ctrl_methods[ctrl_idx] == CONTROL_MOUSE) {
u8 *d = &device_data[0x90];
// Detect "mouse key press".
u8 flag = d[6];
bool event = false;
if (key_tap(KEY_B)) {
event = true;
flag |= 0x01;
} else if (key_released(KEY_B)) {
event = true;
flag &= ~0x01;
}
if (key_tap(KEY_A)) {
event = true;
flag |= 0x10;
} else if (key_released(KEY_A)) {
event = true;
flag &= ~0x10;
}
// Handle chording.
d[6] = flag;
if(flag == 0x10 && (d[6] & 0x01)) {
d[7] = 0x01;
}
if(flag == 0x01 && (d[6] & 0x10)) {
d[7] = 0x10;
}
// Detect mouse movement.
if (key_pressed(KEY_UP)) {
event = true;
mouse.y = CLAMP(mouse.y - MOUSE_DELTA, 0, SCREEN_HEIGHT - 8);
} else if (key_pressed(KEY_DOWN)) {
event = true;
mouse.y = CLAMP(mouse.y + MOUSE_DELTA, 0, SCREEN_HEIGHT - 8);
}
if (key_pressed(KEY_LEFT)) {
event = true;
mouse.x = CLAMP(mouse.x - MOUSE_DELTA, 0, SCREEN_WIDTH - 8);
} else if (key_pressed(KEY_RIGHT)) {
event = true;
mouse.x = CLAMP(mouse.x + MOUSE_DELTA, 0, SCREEN_WIDTH - 8);
}
// Eval mouse.
POKE2(d + 0x2, mouse.x);
POKE2(d + 0x4, mouse.y);
if (event) {
uxn_eval_asm(PEEK2(d));
}
} else if (ctrl_methods[ctrl_idx] == CONTROL_KEYBOARD) {
u8 *d = &device_data[0x80];
if (key_tap(KEY_LEFT)) {
update_cursor(cursor_position - 1);
} else if (key_tap(KEY_RIGHT)) {
update_cursor(cursor_position + 1);
}
if (key_tap(KEY_UP) && cursor_position >= KEYBOARD_ROW_SIZE) {
update_cursor(cursor_position - KEYBOARD_ROW_SIZE);
} else if (key_tap(KEY_DOWN)
&& cursor_position < LEN(keyboard) - KEYBOARD_ROW_SIZE) {
update_cursor(cursor_position + KEYBOARD_ROW_SIZE);
}
if (key_tap(KEY_B)) {
u8 symbol = keyboard[cursor_position].symbol;
switch (symbol) {
case 0x7f: {
// Backspace.
d[3] = 0x08;
} break;
case 0x14: {
// New line.
d[3] = 0x0d;
} break;
case 0x18: {
// Arrow up.
d[2] = 0x10;
} break;
case 0x19: {
// Arrow down.
d[2] = 0x20;
} break;
case 0x1b: {
// Arrow left.
d[2] = 0x40;
} break;
case 0x1a: {
// Arrow right.
d[2] = 0x80;
} break;
default: {
d[3] = symbol;
} break;
}
uxn_eval_asm(PEEK2(d));
d[3] = 0;
}
}
}
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