CNCMaps.Engine.Map.LightSource.ApplyLamp C# (CSharp) Method

        public bool ApplyLamp(GameObject obj, bool ambientOnly = false)
        {
            var lamp = this;
            const double TOLERANCE = 0.001;
            if (Math.Abs(lamp.LightIntensity) < TOLERANCE)
                return false;

            var drawLocation = obj.Tile;
            double sqX = (lamp.Tile.Rx - drawLocation.Rx) * (lamp.Tile.Rx - drawLocation.Rx);
            double sqY = (lamp.Tile.Ry - (drawLocation.Ry)) * (lamp.Tile.Ry - (drawLocation.Ry));

            double distance = Math.Sqrt(sqX + sqY);

            // checks whether we're in range
            if ((0 < lamp.LightVisibility) && (distance < lamp.LightVisibility / 256)) {
                double lsEffect = (lamp.LightVisibility - 256 * distance) / lamp.LightVisibility;

                // we don't want to apply lamps to shared palettes, so clone first
                if (obj.Palette.IsShared)
                    obj.Palette = obj.Palette.Clone();

                obj.Palette.ApplyLamp(lamp, lsEffect, ambientOnly);
                return true;
            }
            else
                return false;
        }