// Keyboard and mouse input polling.
//
// Call joeyInputPoll() once per frame (typically right before
// drawing) to refresh both keyboard and mouse state. After polling,
// the joeyKey* predicates return the current state of every key:
//
//   joeyKeyDown(k)     -- is key k held down right now
//   joeyKeyPressed(k)  -- rising edge since the previous poll
//   joeyKeyReleased(k) -- falling edge since the previous poll
//
// And the mouse predicates return the pointer state:
//
//   joeyMouseX/Y()                -- pointer position in surface
//                                    coords (0..SURFACE_WIDTH-1,
//                                    0..SURFACE_HEIGHT-1)
//   joeyMouseDown(b)              -- is button b held right now
//   joeyMousePressed(b)           -- rising edge since last poll
//   joeyMouseReleased(b)          -- falling edge since last poll
//
// Edge predicates are one-shot: they return true only in the
// frame the transition occurred and false thereafter.

#ifndef JOEYLIB_INPUT_H
#define JOEYLIB_INPUT_H

#include "platform.h"
#include "types.h"

typedef enum {
    KEY_NONE = 0,

    KEY_A, KEY_B, KEY_C, KEY_D, KEY_E, KEY_F, KEY_G, KEY_H, KEY_I,
    KEY_J, KEY_K, KEY_L, KEY_M, KEY_N, KEY_O, KEY_P, KEY_Q, KEY_R,
    KEY_S, KEY_T, KEY_U, KEY_V, KEY_W, KEY_X, KEY_Y, KEY_Z,

    KEY_0, KEY_1, KEY_2, KEY_3, KEY_4,
    KEY_5, KEY_6, KEY_7, KEY_8, KEY_9,

    KEY_SPACE, KEY_ESCAPE, KEY_RETURN, KEY_TAB, KEY_BACKSPACE,

    KEY_UP, KEY_DOWN, KEY_LEFT, KEY_RIGHT,

    KEY_LSHIFT, KEY_RSHIFT, KEY_LCTRL, KEY_LALT,

    KEY_F1, KEY_F2, KEY_F3, KEY_F4, KEY_F5,
    KEY_F6, KEY_F7, KEY_F8, KEY_F9, KEY_F10,

    KEY_COUNT
} JoeyKeyE;

typedef enum {
    MOUSE_BUTTON_NONE   = 0,
    MOUSE_BUTTON_LEFT,
    MOUSE_BUTTON_RIGHT,
    MOUSE_BUTTON_MIDDLE,

    MOUSE_BUTTON_COUNT
} JoeyMouseButtonE;

void joeyInputPoll(void);

bool joeyKeyDown(JoeyKeyE key);
bool joeyKeyPressed(JoeyKeyE key);
bool joeyKeyReleased(JoeyKeyE key);

int16_t joeyMouseX(void);
int16_t joeyMouseY(void);
bool    joeyMouseDown(JoeyMouseButtonE button);
bool    joeyMousePressed(JoeyMouseButtonE button);
bool    joeyMouseReleased(JoeyMouseButtonE button);

#endif