system_stub.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 AWE_SYSTEM_STUB_H
#define AWE_SYSTEM_STUB_H

#include "awe/intern.h"

namespace Awe {

struct PlayerInput {
    enum {
        DIR_LEFT = 1 << 0,
        DIR_RIGHT = 1 << 1,
        DIR_UP = 1 << 2,
        DIR_DOWN = 1 << 3
    };

    uint8 dirMask = 0;
    bool action = false; // run,shoot
    bool jump = false;
    bool code = false;
    bool pause = false;
    bool quit = false;
    bool back = false;
    char lastChar = '\0';
    bool fastMode = false;
};

struct DisplayMode {
    enum {
        WINDOWED,
        FULLSCREEN,    // stretch
        FULLSCREEN_AR, // 16:10 aspect ratio
    } mode;
    int width = 0, height = 0; // window dimensions
    bool opengl = false;       // GL renderer
};

struct SystemStub {
    typedef void (*AudioCallback)(void *param, uint8 *stream, int len);

    PlayerInput _pi;
    DisplayMode _dm;

    SystemStub() {}
    virtual ~SystemStub() {}

    virtual void init(const DisplayMode &dm) = 0;
    virtual void fini() = 0;

    // GL rendering
    virtual void prepareScreen(int &w, int &h, float ar[4]) = 0;
    virtual void updateScreen() = 0;
    // framebuffer rendering
    virtual void setPalette(const Color pal[16]) = 0;
    virtual void setScreenPixels(const Graphics::Surface &src) = 0;

    virtual void processEvents() = 0;
    virtual void sleep(uint32 duration) = 0;
    virtual uint32 getTimeStamp() = 0;
};

extern SystemStub *SystemStub_create(bool isAnniversaryEdition);

} // namespace Awe

#endif