dayzplayerimplementheading.c

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/* 
DayZPlayerImplement
 
this file is implemenation of dayzPlayer in script 
- logic of movement 
- camera switching logic
 
*/
 
class DayZPlayerImplementHeading
{
 
    //-------------------------------------------------------------

    static bool ClampHeading (float pDt, SDayZPlayerHeadingModel pModel, out float pLastHeadingDiff)
    {
        float       aDiff = pModel.m_fHeadingAngle - pModel.m_fOrientationAngle;
        if (aDiff < -Math.PI)
        {
            aDiff += Math.PI2;
        }
        else if (aDiff > Math.PI)
        {
            aDiff -= Math.PI2;
        }
 
        // Print("Heading model: or: " + pModel.m_fOrientationAngle.ToString() + " head:" + pModel.m_fHeadingAngle.ToString() + " dif:" + aDiff.ToString());
 
        if (pLastHeadingDiff < -Math.PI_HALF && aDiff > 0)
        {
            aDiff                   = -Math.PI + 0.01;
            pLastHeadingDiff        = aDiff;
            pModel.m_fHeadingAngle  = pModel.m_fOrientationAngle + aDiff;
        
            // Print("-APA- : or: " + pModel.m_fOrientationAngle.ToString() + " head:" + pModel.m_fHeadingAngle.ToString() + " dif:" + aDiff.ToString());
 
            return true;        // modify heading
        }
        else if (pLastHeadingDiff > Math.PI_HALF && aDiff < 0)
        {
            aDiff                   = Math.PI - 0.01;
            pLastHeadingDiff        = aDiff;
            pModel.m_fHeadingAngle  = pModel.m_fOrientationAngle + aDiff;
 
            // Print("-APA- : or: " + pModel.m_fOrientationAngle.ToString() + " head:" + pModel.m_fHeadingAngle.ToString() + " dif:" + aDiff.ToString());
 
            return true;        // modify heading
        }
 
        pLastHeadingDiff    = aDiff;
        // Print("Heading model diff " + aDiff.ToString());
        return false;
    }
 
    //-------------------------------------------------------------
 
    static float    CONST_ROTLIMIT = Math.PI * 0.95;

    static bool RotateOrient (float pDt, SDayZPlayerHeadingModel pModel, out float pLastHeadingDiff)
    {
        float       aDiff = pModel.m_fHeadingAngle - pModel.m_fOrientationAngle;
 
        while (aDiff < -Math.PI)
        {
            aDiff += Math.PI2;
        }
        while (aDiff > Math.PI)
        {
            aDiff -= Math.PI2;
        }
 
        // Print("Heading model: or: " + pModel.m_fOrientationAngle.ToString() + " head:" + pModel.m_fHeadingAngle.ToString() + " dif:" + aDiff.ToString());
 
        if (pLastHeadingDiff < -Math.PI_HALF && aDiff > 0)
        {
            aDiff -= Math.PI2;
        }
        else if (pLastHeadingDiff > Math.PI_HALF && aDiff < 0)
        {
            aDiff += Math.PI2;
        }
 
        pLastHeadingDiff    = aDiff;        
        if (aDiff < -CONST_ROTLIMIT)
        {
            // character is somehow stucked (happens in prone stance)
            if (aDiff < -(Math.PI_HALF + CONST_ROTLIMIT))
            {
                pLastHeadingDiff = 0;
                return false;
            }
            
            pModel.m_fOrientationAngle += aDiff +  CONST_ROTLIMIT;
            return true;
        }
        else if (aDiff > CONST_ROTLIMIT)
        {
            // character is somehow stucked (happens in prone stance)
            if (aDiff > (Math.PI_HALF + CONST_ROTLIMIT))
            {
                pLastHeadingDiff = 0;
                return false;
            }
            
            pModel.m_fOrientationAngle += aDiff - CONST_ROTLIMIT;
            return true;
        }
 
        // Print("Heading model diff " + aDiff.ToString());
        return false;
 
    }
        
    static bool RestrictHeading(float pDt, SDayZPlayerHeadingModel pModel, out float pLastHeadingDiff, HeadingRestrictData restrictData)
    {   
        pModel.m_fHeadingAngle = ClampAngle(pModel.m_fHeadingAngle, restrictData);  
        return true;
    }
    
    // Clamp angle between -PI to PI
    protected static float ClampAngle(float angle, HeadingRestrictData restrictData)
    {
        float testOtherDir;
        
        if (restrictData.m_RestrictedR > restrictData.m_RestrictedL)
        {
            if (angle > restrictData.m_RestrictedL && angle < restrictData.m_RestrictedR)
            {
                //Print("STANDARD NOCLAMP: " + angle*Math.RAD2DEG + " |MIN: " + restrictData.m_RestrictedL*Math.RAD2DEG + " |MAX: " + restrictData.m_RestrictedR*Math.RAD2DEG);
                return angle;
            }
            else 
            {
                //Print("STANDARD CLAMP: " + angle*Math.RAD2DEG + " |MIN: " + restrictData.m_RestrictedL*Math.RAD2DEG + " |MAX: " + restrictData.m_RestrictedR*Math.RAD2DEG);
 
                if (angle > restrictData.m_RestrictedR + 90 * Math.DEG2RAD)  // check if restrictData.m_RestrictedR/restrictData.m_RestrictedL is close to -PI and the new angle flips to +PI or vice versa
                    return restrictData.m_RestrictedL;
                else if (angle < restrictData.m_RestrictedL - 90 * Math.DEG2RAD)
                    return restrictData.m_RestrictedR;
                
                return Math.Clamp(angle, restrictData.m_RestrictedL, restrictData.m_RestrictedR);   
            }
        }
        else if (restrictData.m_RestrictedR < restrictData.m_RestrictedL) // angle is restrited through 180 -> -180, clamping follows different rules
        {
            if ((angle >= -180 && angle < restrictData.m_RestrictedR) || (angle <= 180 && angle > restrictData.m_RestrictedL))
            {
                //Print("INVERSE NOCLAMP: " + angle*Math.RAD2DEG + " |MIN: " + restrictData.m_RestrictedL*Math.RAD2DEG + " |MAX: " + restrictData.m_RestrictedR*Math.RAD2DEG);
                return angle;
            }
            else 
            {           
                //Print("INVERSE CLAMP: " + angle*Math.RAD2DEG + " |MIN: " + restrictData.m_RestrictedL*Math.RAD2DEG + " |MAX: " + restrictData.m_RestrictedR*Math.RAD2DEG);
                
                if (angle < 0)
                {
                    testOtherDir = Math.AbsFloat(restrictData.m_RestrictedR - angle);
                    if (testOtherDir < restrictData.m_AngleRangeInverted - testOtherDir)
                        return restrictData.m_RestrictedR;
                    else 
                        return restrictData.m_RestrictedL;
                }
                else if (angle >= 0)
                {
                    testOtherDir = Math.AbsFloat(restrictData.m_RestrictedL - angle);
                    if (testOtherDir < restrictData.m_AngleRangeInverted - testOtherDir)
                        return restrictData.m_RestrictedL;
                    else 
                        return restrictData.m_RestrictedR;
                }
                    
                return angle;
            }
        }
        
        return angle;
    }
    
    static bool NoHeading(float pDt, SDayZPlayerHeadingModel pModel, out float pLastHeadingDiff)
    {
        pLastHeadingDiff = 0;
        pModel.m_fHeadingAngle = pModel.m_fOrientationAngle;
        return true;
    }
}
 
class HeadingRestrictData
{
    float m_RestrictedL;        // restricted angle left
    float m_RestrictedR;        // restricted angle right
    float m_AngleRangeInverted; // the size of the restricted angle
    
    void InitData(float currentHeading, Vector2 restrictedAngles)
    {
        m_RestrictedL = currentHeading + (Math.DEG2RAD * restrictedAngles.x);
        if (m_RestrictedL < -Math.PI)
            m_RestrictedL += Math.PI2;
        
        m_RestrictedR = currentHeading + (Math.DEG2RAD * restrictedAngles.y);
        if (m_RestrictedR > Math.PI)
            m_RestrictedR -= Math.PI2;
        
        m_AngleRangeInverted = Math.PI2 - (Math.AbsFloat(restrictedAngles.x * Math.DEG2RAD) + restrictedAngles.y * Math.DEG2RAD);
    }
}