weather.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_AGS_SNOW_RAIN_WEATHER_H
#define AGS_PLUGINS_AGS_SNOW_RAIN_WEATHER_H

#include "ags/plugins/plugin_base.h"
#include "ags/plugins/serializer.h"

namespace AGS3 {
namespace Plugins {
namespace AGSSnowRain {

struct View {
    int view = 0;
    int loop = 0;
    bool is_default = false;
    BITMAP *bitmap = nullptr;

    void syncGame(Serializer &s);
};

struct Drop {
    float x = 0;
    float y = 0;
    int alpha = 0;
    float speed = 0;
    int max_y = 0;
    int kind_id = 0;
    int drift = 0;
    float drift_speed = 0;
    float drift_offset = 0;

    void clear() {
        x = 0;
        y = 0;
        alpha = 0;
        speed = 0;
        max_y = 0;
        kind_id = 0;
        drift = 0;
        drift_speed = 0;
        drift_offset = 0;
    }
};

class Weather {
private:
    void ClipToRange(int &variable, int min, int max);

    bool _mIsSnow;
    int32 &_screenWidth;
    int32 &_screenHeight;
    IAGSEngine *&_engine;

    int _mMinDrift = 0;
    int _mMaxDrift = 0;
    int _mDeltaDrift = 0;

    int _mMinDriftSpeed = 0;
    int _mMaxDriftSpeed = 0;
    int _mDeltaDriftSpeed = 0;

    int _mAmount = 0;
    int _mTargetAmount = 0;

    int _mMinAlpha = 0;
    int _mMaxAlpha = 0;
    int _mDeltaAlpha = 0;

    float _mWindSpeed = 0;

    bool _mBaselineFixed;
    int _mTopBaseline = 0;
    int _mBottomBaseline = 0;
    int _mDeltaBaseline = 0;

    int _mMinFallSpeed = 0;
    int _mMaxFallSpeed = 0;
    int _mDeltaFallSpeed = 0;

    Drop _mParticles[2000];
    View _mViews[5];

    bool _mViewsInitialized;

public:
    Weather(bool IsSnow, int32 &scrWidth, int32 &scrHeight, IAGSEngine *&engine);

    void Initialize();
    void InitializeParticles();

    void syncGame(Serializer &s);
    bool ReinitializeViews();

    bool IsActive();
    void Update();
    void UpdateWithDrift();
    void EnterRoom();

    void SetDriftRange(int min_value, int max_value);
    void SetDriftSpeed(int min_value, int max_value);
    void ChangeAmount(int amount);
    void SetView(int kind_id, int event, int view, int loop);
    void SetDefaultView(int view, int loop);
    void SetTransparency(int min_value, int max_value);
    void SetWindSpeed(int value);
    // Sets baseline and marks baseline as fixed
    void SetBaseline(int top, int bottom);
    // Resets baselines to the (0, screen_height);
    // marks baseline for auto-update on screen change
    void ResetBaseline();
    void SetAmount(int amount);
    void SetFallSpeed(int min_value, int max_value);
};

} // namespace AGSSnowRain
} // namespace Plugins
} // namespace AGS3

#endif