ags_flashlight.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
 * 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 AGS_PLUGINS_AGSFLASHLIGHT_AGSFLASHLIGHT_H
#define AGS_PLUGINS_AGSFLASHLIGHT_AGSFLASHLIGHT_H

#include "ags/plugins/ags_plugin.h"
#include "ags/plugins/serializer.h"
#include "ags/lib/allegro.h"

namespace AGS3 {
namespace Plugins {
namespace AGSFlashlight {

class AGSFlashlight : public PluginBase {
    SCRIPT_HASH(AGSFlashlight)
private:
    int32 screen_width = 320;
    int32 screen_height = 200;
    int32 screen_color_depth = 16;
    bool g_BitmapMustBeUpdated = true;
    int g_RedTint = 0;
    int g_GreenTint = 0;
    int g_BlueTint = 0;
    int g_DarknessLightLevel = 100;
    int g_BrightnessLightLevel = 100;
    int g_DarknessSize = 0;
    int g_DarknessDiameter = 0;
    int g_BrightnessSize = 0;
    int32 g_FlashlightX = 0;
    int32 g_FlashlightY = 0;
    int32 g_FlashlightDrawAtX = 0;
    int32 g_FlashlightDrawAtY = 0;
    bool g_FlashlightFollowMouse = false;
    int g_FollowCharacterId = 0;
    int g_FollowCharacterDx = 0;
    int g_FollowCharacterDy = 0;
    int g_FollowCharacterHorz = 0;
    int g_FollowCharacterVert = 0;
    AGSCharacter *g_FollowCharacter = nullptr;
    BITMAP *g_LightBitmap = nullptr;
    uint32 flashlight_x = 0, flashlight_n = 0;

private:
    inline uint32 _blender_alpha16_bgr(uint32 y);
    inline void calc_x_n(uint32 x);
    inline void setPixel(int x, int y, uint32 color, uint32 *pixel);
    void plotCircle(int xm, int ym, int r, uint32 color);
    void ClipToRange(int &variable, int min, int max);
    void AlphaBlendBitmap();
    void DrawTint();
    void DrawDarkness();
    void CreateLightBitmap();
    void Update();
    uint32 blendPixel(uint32 col, bool isAlpha24, int light);
    void syncGame(Serializer &s);

    void SetFlashlightTint(ScriptMethodParams &params);
    void GetFlashlightTintRed(ScriptMethodParams &params);
    void GetFlashlightTintGreen(ScriptMethodParams &params);
    void GetFlashlightTintBlue(ScriptMethodParams &params);
    void GetFlashlightMinLightLevel(ScriptMethodParams &params);
    void GetFlashlightMaxLightLevel(ScriptMethodParams &params);
    void SetFlashlightDarkness(ScriptMethodParams &params);
    void GetFlashlightDarkness(ScriptMethodParams &params);
    void SetFlashlightDarknessSize(ScriptMethodParams &params);
    void GetFlashlightDarknessSize(ScriptMethodParams &params);
    void SetFlashlightBrightness(ScriptMethodParams &params);
    void GetFlashlightBrightness(ScriptMethodParams &params);
    void SetFlashlightBrightnessSize(ScriptMethodParams &params);
    void GetFlashlightBrightnessSize(ScriptMethodParams &params);
    void SetFlashlightPosition(ScriptMethodParams &params);
    void GetFlashlightPositionX(ScriptMethodParams &params);
    void GetFlashlightPositionY(ScriptMethodParams &params);
    void SetFlashlightFollowMouse(ScriptMethodParams &params);
    void GetFlashlightFollowMouse(ScriptMethodParams &params);
    void SetFlashlightFollowCharacter(ScriptMethodParams &params);
    void GetFlashlightFollowCharacter(ScriptMethodParams &params);
    void GetFlashlightCharacterDX(ScriptMethodParams &params);
    void GetFlashlightCharacterDY(ScriptMethodParams &params);
    void GetFlashlightCharacterHorz(ScriptMethodParams &params);
    void GetFlashlightCharacterVert(ScriptMethodParams &params);
    void SetFlashlightMask(ScriptMethodParams &params);
    void GetFlashlightMask(ScriptMethodParams &params);
public:
    AGSFlashlight() : PluginBase() {}
    virtual ~AGSFlashlight() {}

    const char *AGS_GetPluginName() override;
    void AGS_EngineStartup(IAGSEngine *engine) override;
    int64 AGS_EngineOnEvent(int event, NumberPtr data) override;
};

} // namespace AGSFlashlight
} // namespace Plugins
} // namespace AGS3

#endif