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Improved the wind direction selection based on the probability array

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ulteq 2015-04-22 19:46:09 +02:00
parent ac5d593271
commit caf2f12eb9
1 changed files with 19 additions and 11 deletions
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24
addons/weather/functions/fnc_initWind.sqf
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@ -11,24 +11,32 @@
*/ */
#include "script_component.hpp" #include "script_component.hpp"
private ["_j", "_i", "_directionFound", "_month", "_windDirectionProbabilities"]; private ["_sum", "_rand", "_csum", "_index", "_month", "_windDirectionProbabilities"];
_month = date select 1; _month = date select 1;
_windDirectionProbabilities = GVAR(WindDirectionProbabilities) select (_month - 1); _windDirectionProbabilities = GVAR(WindDirectionProbabilities) select (_month - 1);
ACE_wind = [0, 0, 0]; ACE_wind = [0, 0, 0];
GVAR(wind_direction_reference) = random 360; GVAR(wind_direction_reference) = random 360;
_directionFound = false; _sum = 0;
for "_j" from 0 to 10 do {
_random = random 1;
for "_i" from 0 to 7 do { for "_i" from 0 to 7 do {
if (_random < (_windDirectionProbabilities select _i)) exitWith { _sum = _sum + (_windDirectionProbabilities select _i);
_directionFound = true; };
GVAR(wind_direction_reference) = 45 * _i; _rand = random _sum;
_csum = [0, 0, 0, 0, 0, 0, 0, 0];
for "_i" from 0 to 7 do {
for "_j" from 0 to _i do {
_csum set [_i, (_csum select _i) + (_windDirectionProbabilities select _j)];
}; };
}; };
if (_directionFound) exitWith {}; _index = 0;
for "_i" from 0 to 7 do {
if (_rand > (_csum select _i)) then {
_index = _index + 1;
}; };
};
GVAR(wind_direction_reference) = 45 * _index;
GVAR(wind_mean_dir) = GVAR(wind_direction_reference); GVAR(wind_mean_dir) = GVAR(wind_direction_reference);
GVAR(wind_direction_reference) = GVAR(wind_direction_reference) + (random 22.5) - (random 22.5); GVAR(wind_direction_reference) = GVAR(wind_direction_reference) + (random 22.5) - (random 22.5);
GVAR(wind_direction_reference) = (360 + GVAR(wind_direction_reference)) % 360; GVAR(wind_direction_reference) = (360 + GVAR(wind_direction_reference)) % 360;