input.h

/* ScummVM - Graphic Adventure Engine
 *
 * ScummVM is the legal property of its developers, whose names
 * are too numerous to list here. Please refer to the COPYRIGHT
 * file distributed with this source distribution.
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 *
 */

#ifndef PSP_INPUT_H
#define PSP_INPUT_H

#include "common/scummsys.h"
#include "common/events.h"
#include "backends/platform/psp/pspkeyboard.h"
#include "backends/platform/psp/cursor.h"
#include "backends/platform/psp/image_viewer.h"
#include <pspctrl.h>

enum PspEventType {
    PSP_EVENT_NONE = 0,
    PSP_EVENT_SHIFT,
    PSP_EVENT_SHOW_VIRTUAL_KB,
    PSP_EVENT_LBUTTON,
    PSP_EVENT_RBUTTON,
    PSP_EVENT_MODE_SWITCH,
    PSP_EVENT_CHANGE_SPEED,
    PSP_EVENT_IMAGE_VIEWER,
    PSP_EVENT_IMAGE_VIEWER_SET_BUTTONS,
    PSP_EVENT_LAST
};

struct PspEvent {
    PspEventType type;
    uint32 data;
    PspEvent() { clear(); }
    void clear() {
        type = PSP_EVENT_NONE;
        data = 0;
    }
    bool isEmpty() { return type == PSP_EVENT_NONE; }
};

enum PspPadMode {
    PAD_MODE_NORMAL,
    PAD_MODE_LOL,
    PAD_MODE_LAST
};

enum ShiftMode {
    UNSHIFTED = 0,
    SHIFTED = 1,
    SHIFTED_MODE_LAST
};


class Button {
private:
    Common::KeyCode _key;
    uint32 _ascii;
    uint32 _flag;
    PspEvent _pspEventDown; // event when we press
    PspEvent _pspEventUp;   // event when we release
public:
    Button();
    void clear();
    bool getEvent(Common::Event &event, PspEvent &pspEvent, bool buttonDown);
    void setKey(Common::KeyCode key, uint32 ascii = 0, uint32 flag = 0) { _key = key; _ascii = ascii; _flag = flag; }
    void setPspEvent(PspEventType typeDown, uint32 dataDown, PspEventType typeUp, uint32 dataUp);
};

class ButtonPad {
public:
    enum ButtonType {   // must match the buttonMap
        BTN_UP_LEFT,
        BTN_UP_RIGHT,
        BTN_DOWN_RIGHT,
        BTN_DOWN_LEFT,
        BTN_RIGHT,
        BTN_DOWN,
        BTN_LEFT,
        BTN_UP,
        BTN_CROSS,
        BTN_CIRCLE,
        BTN_TRIANGLE,
        BTN_SQUARE,
        BTN_LTRIGGER,
        BTN_RTRIGGER,
        BTN_START,
        BTN_SELECT,
        BTN_LAST
    };

private:
    Button _button[BTN_LAST][SHIFTED_MODE_LAST];
    uint32 _buttonsChanged[SHIFTED_MODE_LAST];      // normal and shifted
    uint32 _prevButtonState;
    ShiftMode _shifted;
    PspPadMode _padMode;
    bool _comboMode;                                // are we in the middle of combos
    bool _combosEnabled;                            // can we do combos
    static const uint32 _buttonMap[];               // maps the buttons to their values

    void initButtonsNormalMode();
    void initButtonsLolMode();
    void modifyButtonsForCombos(SceCtrlData &pad);

public:
    ButtonPad();
    void initButtons();     // set the buttons to the mode that's selected
    void clearButtons();    // empty the buttons of all events

    bool getEvent(Common::Event &event, PspEvent &pspEvent, SceCtrlData &pad);
    bool getEventFromButtonState(Common::Event &event, PspEvent &pspEvent, uint32 buttonState);

    void setShifted(ShiftMode shifted) { _shifted = shifted; }
    void setPadMode(PspPadMode mode) { _padMode = mode; }
    bool isButtonDown() { return _prevButtonState; }

    void enableCombos(bool value) { _combosEnabled = value; }
    Button &getButton(ButtonType type, ShiftMode mode) { return _button[type][mode]; }
};

class Nub {
private:
    Cursor *_cursor;        // to enable changing/getting cursor position

    ShiftMode _shifted;
    int32 _hiresX;          // to accumulate analog X over many frames
    int32 _hiresY;          // to accumulate analog Y over many frames
    bool _dpadMode;

    ButtonPad _buttonPad;   // private buttonpad for dpad mode

    int32 modifyNubAxisMotion(int32 input);
    void translateToDpadState(int dpadX, int dpadY, uint32 &buttonState);   // convert nub data to dpad data
public:
    Nub() : _shifted(UNSHIFTED), _dpadMode(false), _hiresX(0), _hiresY(0) { }
    void init() { _buttonPad.initButtons(); }

    void setCursor(Cursor *cursor) { _cursor = cursor; }

    // setters
    void setDpadMode(bool active) { _dpadMode = active; }
    void setShifted(ShiftMode shifted) { _shifted = shifted; }

    // getters
    bool isButtonDown();
    bool getEvent(Common::Event &event, PspEvent &pspEvent, SceCtrlData &pad);
    ButtonPad &getPad() { return _buttonPad; }
};

class InputHandler {
public:
    InputHandler() : _keyboard(0), _cursor(0), _imageViewer(0), _padMode(PAD_MODE_NORMAL),
                     _lastPadCheckTime(0) {}
    // pointer setters
    void setKeyboard(PSPKeyboard *keyboard) { _keyboard = keyboard; }
    void setCursor(Cursor *cursor) { _cursor = cursor; _nub.setCursor(cursor); }
    void setImageViewer(ImageViewer *imageViewer) { _imageViewer = imageViewer; }

    void init();
    bool getAllInputs(Common::Event &event);
    void setImageViewerMode(bool active);

private:
    Nub _nub;
    ButtonPad _buttonPad;

    // Pointers to relevant other classes
    PSPKeyboard *_keyboard;
    Cursor *_cursor;
    ImageViewer *_imageViewer;

    PspPadMode _padMode;                // whice mode we're in
    PspEvent _pendingPspEvent;          // an event that can't be handled yet
    uint32  _lastPadCheckTime;
    static const char *_padModeText[];

    bool getEvent(Common::Event &event, SceCtrlData &pad);
    bool handlePspEvent(Common::Event &event, PspEvent &pspEvent);
    void handleMouseEvent(Common::Event &event, Common::EventType type, const char *string);
    void handleShiftEvent(ShiftMode shifted);
    void handleModeSwitchEvent();
    void setButtonsForImageViewer();
};

#endif /* PSP_INPUT_H */