ecmascript:

function set_hitPoint(hp)
{
    lastHitPoint= hp;
}

function touchedFloor(t)
{
    indPos= CheckGroundRoof(lastHitPoint);
    indOri= new SFRotation(-1, 0, 0, 1.571);
}

function touchedWallLeft(t)
{
    indPos= CheckLeftRightWall(CheckHeight(lastHitPoint));
    indOri= new SFRotation(0, 1, 0, 1.5705);
}

function touchedWallRight(t)
{
    indPos= CheckLeftRightWall(CheckHeight(lastHitPoint));
    indOri= new SFRotation(0, -1, 0, 1.5705);
}

function touchedWallFront(t)
{
    indPos= CheckFrontWall(CheckHeight(lastHitPoint));
    indOri= new SFRotation(0, 1, 0, 0);
}

function touchedRoof(t)
{
    indPos= CheckGroundRoof(lastHitPoint);
    indOri= (new SFRotation(1, 0, 0, 1.57));//.multiply(new SFRotation(0, 1, 0, 3.14159));
}

function CheckGroundRoof(pos)
{
return new SFVec3f( Limit(pos.x, -cRoomWidth/2 + cPaintingWidth/2, cRoomWidth/2 - cPaintingWidth/2)
                  , pos.y
                  , Limit(pos.z, -cRoomDepth/2 + cPaintingHeight/2, cRoomDepth/2 - cPaintingHeight/2)
                  );
}

function CheckHeight(pos)
{
    return new SFVec3f( pos.x
                  , Limit(pos.y, cFloorY + cPaintingHeight/2, cFloorY + cRoomHeight - cPaintingHeight/2)
                  , pos.z
                  );
}

function CheckLeftRightWall(pos)
{
    return new SFVec3f( pos.x
                      , pos.y
                      , Limit(pos.z, -cRoomDepth/2 + cPaintingWidth/2, cRoomDepth/2 - cPaintingWidth/2)
                      );
}

function CheckFrontWall(pos)
{
    return new SFVec3f( Limit(pos.x, -cRoomWidth/2 + cPaintingWidth/2, cRoomWidth/2 - cPaintingWidth/2)
                      , pos.y
                      , pos.z
                      );
}
function Limit(x, min, max)
{
    return Min(Max(x, min), max);
}

function Max(a, b)
{
    return a > b? a:b;
}

function Min(a, b)
{
    return a > b? b:a;
}