// Public input API. Maintains current/previous state buffers for both
// the keyboard (gKeyState/gKeyPrev) and the mouse buttons
// (gMouseButtonState/gMouseButtonPrev). joeyInputPoll snapshots the
// previous state, then asks the port HAL to refresh the current state;
// the predicates derive held/edge values from those two buffers.
//
// Mouse position (gMouseX/gMouseY) is plain current state -- there is
// no "previous position" exposed; games that want delta movement can
// remember the previous joeyMouseX/Y themselves.

#include <string.h>

#include "joey/input.h"
#include "hal.h"
#include "inputInternal.h"

bool    gKeyState        [KEY_COUNT];
bool    gKeyPrev         [KEY_COUNT];

int16_t gMouseX          = 0;
int16_t gMouseY          = 0;
bool    gMouseButtonState[MOUSE_BUTTON_COUNT];
bool    gMouseButtonPrev [MOUSE_BUTTON_COUNT];


void joeyInputPoll(void) {
    memcpy(gKeyPrev,         gKeyState,         sizeof(gKeyState));
    memcpy(gMouseButtonPrev, gMouseButtonState, sizeof(gMouseButtonState));
    halInputPoll();
}


bool joeyKeyDown(JoeyKeyE key) {
    if (key <= KEY_NONE || key >= KEY_COUNT) {
        return false;
    }
    return gKeyState[key];
}


bool joeyKeyPressed(JoeyKeyE key) {
    if (key <= KEY_NONE || key >= KEY_COUNT) {
        return false;
    }
    return gKeyState[key] && !gKeyPrev[key];
}


bool joeyKeyReleased(JoeyKeyE key) {
    if (key <= KEY_NONE || key >= KEY_COUNT) {
        return false;
    }
    return !gKeyState[key] && gKeyPrev[key];
}


bool joeyMouseDown(JoeyMouseButtonE button) {
    if (button <= MOUSE_BUTTON_NONE || button >= MOUSE_BUTTON_COUNT) {
        return false;
    }
    return gMouseButtonState[button];
}


bool joeyMousePressed(JoeyMouseButtonE button) {
    if (button <= MOUSE_BUTTON_NONE || button >= MOUSE_BUTTON_COUNT) {
        return false;
    }
    return gMouseButtonState[button] && !gMouseButtonPrev[button];
}


bool joeyMouseReleased(JoeyMouseButtonE button) {
    if (button <= MOUSE_BUTTON_NONE || button >= MOUSE_BUTTON_COUNT) {
        return false;
    }
    return !gMouseButtonState[button] && gMouseButtonPrev[button];
}


int16_t joeyMouseX(void) {
    return gMouseX;
}


int16_t joeyMouseY(void) {
    return gMouseY;
}