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#include "input.h"
#include "../config.h"
// Reset an input device.
void input_reset(InputDevice *input) {
input->pointer = false;
input->keyboard = false;
input->x = 0;
input->y = 0;
input->x_read = 0;
input->y_read = 0;
circbuf_clear(&input->keybuffer);
input->gamepad = 0;
input->wake = false;
}
// Update the cached read value for the pointer x coordinate.
void input_read_x(InputDevice *input) {
input->x_read = input->x;
}
// Update the cached read value for the pointer y coordinate.
void input_read_y(InputDevice *input) {
input->y_read = input->y;
}
// Receive a byte from a keyboard.
// TODO: Make this function Unicode-aware by receiving a u32 instead of
// a u8, so that the keybuffer can be checked for capacity before pushing.
void input_receive_key(InputDevice *input, u8 byte) {
circbuf_write(&input->keybuffer, byte);
input->wake = true;
}
// Read the current gamepad state.
void input_update_gamepad(InputDevice *input) {
u32 held = keysHeld();
u8 gamepad = (
TEST(held, KEY_UP) << 7
| TEST(held, KEY_DOWN) << 6
| TEST(held, KEY_LEFT) << 5
| TEST(held, KEY_RIGHT) << 4
| TEST(held, KEY_A) << 3
| TEST(held, KEY_B) << 2
| TEST(held, KEY_X) << 1
| TEST(held, KEY_Y) << 0
);
// If the L and R bumper keys aren't being used to switch between
// instances, map them to be alternate X and Y keys.
if (!SWITCH_BETWEEN_INSTANCES) {
gamepad |= TEST(held, KEY_L) << 1;
gamepad |= TEST(held, KEY_R) << 0;
}
if (gamepad != input->gamepad) {
input->wake = true;
input->gamepad = gamepad;
}
}
// Read the current touchscreen state.
void input_update_touch(InputDevice *input) {
// Test if pointer is active.
bool pointer = TEST(keysHeld(), KEY_TOUCH);
if (pointer != input->pointer) {
input->wake = true;
input->pointer = pointer;
}
// Update pointer position.
if (pointer) {
touchPosition position;
touchRead(&position);
if (position.px != input->x || position.py != input->y) {
input->wake = true;
input->x = position.px;
input->y = position.py;
}
}
}
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