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#include "nwnx_area"

const float SM_WIND_SHADER_NONE        = 0.00;
const float SM_WIND_SHADER_ETHEREAL    = 0.01;
const float SM_WIND_SHADER_ULTRAVISION = 0.02;

void SetWindShader(object oPlayer, float fWindShader=SM_WIND_SHADER_NONE);

void SetWindShader(object oPlayer, float fWindShader=SM_WIND_SHADER_NONE)
{
    object oArea = GetArea(oPlayer);

    // I'm using the default game vector, a normalized vector (length 1) would be "easier", but I have not tested it
    vector vDirection = Vector(1.0, 1.0, 0.0);

    int nWindPower = NWNX_Area_GetWindPower(oArea);

    float fYaw, fPitch;
    switch(nWindPower)
    {
        case 0:
            fYaw = 0.0;
            fPitch = 0.0;
            break;
        case 1:
            fYaw = 100.0;
            fPitch = 3.0;
            break;
        case 2:
            fYaw = 150.0;
            fPitch = 5.0;
            break;
    }

    // We will work with the squared modulus to avoid the use of sqrt() operation in the shader
    float fSqModulus = IntToFloat(2*nWindPower*nWindPower);

    //We want the shader to see fSqModulus + fWindShader
    fSqModulus+=fWindShader;

    // From the desired result, calculate the magnitude we will use for the NWNX_Player_UpdateWind function
    float fMagnitude = fSqModulus/2.0; // 2.0 is the squared modulus of vDirection
    fMagnitude = sqrt(fMagnitude);

    // Apply it to the player
     
    NWNX_AreaPlayer_UpdateWind(oPlayer, vDirection, fMagnitude, fYaw, fPitch);
}