/*
 * Author: ACE2 Team, esteldunedain
 * Calculate the wind and rain evolution on the server. Broadcast the current and next values to the clients
 *
 * Argument:
 * None
 *
 * Return value:
 * None
 */
#include "script_component.hpp"
private ["_gustCount","_gustDir","_gustSpeed","_gustTime","_gusts","_i","_lastRain","_maxInterval","_rainOverCast","_startDir","_startSpeed","_time","_timeTillGust","_transitionTime"];

// Rain simulation
if(GVAR(rain_period_count) > GVAR(rain_next_period)) then {

    if(overcast >= 0.7) then {
        _lastRain = GVAR(current_rain);
        _rainOverCast = ((overcast-0.7)/0.3);
        GVAR(rain_next_period) = ceil((1+random(10))/GVAR(overcast_multiplier));

        GVAR(current_rain) = (GVAR(current_rain)+(((GVAR(current_rain)))*((_rainOverCast*(GVAR(overcast_multiplier)))/8)*GVAR(rain_current_range)));
        GVAR(current_rain) = (GVAR(current_rain) max 0.01) min 1;

        _transitionTime = (_rainOverCast*5)+(random (_rainOverCast*20))+1;
        GVAR(rain_current_range) = -1+(random 2);

        ACE_RAIN_PARAMS = [_lastRain, GVAR(current_rain), _transitionTime];
        TRACE_4("",_lastRain,_rainOverCast,_transitionTime, overcast);
    } else {
        GVAR(current_rain) = 0;
        _lastRain = GVAR(current_rain);
        _rainOverCast = 1;
        _transitionTime = (_rainOverCast*5)+(random (_rainOverCast*20))+1;

        ACE_RAIN_PARAMS = [_lastRain, GVAR(current_rain), _transitionTime];
        TRACE_4("",_lastRain,_rainOverCast,_transitionTime, overcast);
    };

    GVAR(rain_period_start_time) = time;
    publicVariable "ACE_RAIN_PARAMS";
};

// Wind simulation
if(GVAR(wind_period_count) > GVAR(wind_next_period)) then {
    _startDir = GVAR(wind_current_dir);
    _startSpeed = GVAR(wind_current_speed);
    GVAR(wind_current_dir) = (GVAR(wind_current_dir)+(((GVAR(wind_current_dir)))*((overcast*(GVAR(overcast_multiplier)))/8)*GVAR(wind_current_range_dir)));

    GVAR(wind_current_speed) = (GVAR(wind_current_speed)+(((GVAR(wind_current_speed)))*(overcast*(GVAR(overcast_multiplier))/12)*GVAR(wind_current_range_speed)));
    GVAR(wind_current_speed) = GVAR(wind_current_speed) max 0.01;

    if(GVAR(wind_current_dir) < 0) then {
        GVAR(wind_current_dir) = GVAR(wind_current_dir)+360;
    };
    GVAR(wind_current_dir) = GVAR(wind_current_dir) % 360;

    GVAR(wind_current_range_speed) = (-1)+(random 2);

    GVAR(wind_current_range_dir) = (-1)+(random 2);

    GVAR(wind_next_period) = ceil((2+random(5))/(GVAR(overcast_multiplier)));
    GVAR(wind_period_count) = 0;

    _gustCount = floor(random(GVAR(wind_next_period)*(overcast*((GVAR(overcast_multiplier)^3)))));

    _time = GVAR(wind_next_period)*60;
    _gusts = [];
    if(_gustCount > 0) then {
        _maxInterval = _time/_gustCount;
        for "_i" from 0 to _gustCount-1 do {
            _gustTime = (random (3 min _maxInterval));
            _timeTillGust = (_maxInterval*_i)+(random (_maxInterval - _gustTime));
            _gustSpeed = (random 1);
            _gustDir = (GVAR(wind_current_dir)+(GVAR(wind_current_dir)*(-1+(random 2))))*(overcast*(GVAR(overcast_multiplier)));
            _gusts set[(count _gusts), [_timeTillGust, _gustTime, _gustSpeed, _gustDir]];
        };
    };

    GVAR(wind_total_time) = GVAR(wind_total_time) + GVAR(wind_next_period);

    ACE_WIND_PARAMS = [_startDir,
                        GVAR(wind_current_dir),
                        _startSpeed,
                        GVAR(wind_current_speed),
                        _time,
                        _gusts];

    GVAR(wind_period_start_time) = time;
    publicVariable "ACE_WIND_PARAMS";
};

// Sync misc. parameters
ACE_MISC_PARAMS = [lightnings, rainbow, fogParams];
publicVariable "ACE_MISC_PARAMS";

GVAR(rain_period_count) = GVAR(rain_period_count) + 1;
GVAR(wind_period_count) = GVAR(wind_period_count) + 1;