Terraria.WaterfallManager.UpdateFrame C# (CSharp) Method

        public void UpdateFrame()
        {
            ++this.wFallFrCounter;
            if (this.wFallFrCounter > 2)
            {
                this.wFallFrCounter = 0;
                ++this.regularFrame;
                if (this.regularFrame > 15)
                    this.regularFrame = 0;
            }
            ++this.wFallFrCounter2;
            if (this.wFallFrCounter2 > 6)
            {
                this.wFallFrCounter2 = 0;
                ++this.slowFrame;
                if (this.slowFrame > 15)
                    this.slowFrame = 0;
            }
            ++this.rainFrameCounter;
            if (this.rainFrameCounter <= 0)
                return;
            ++this.rainFrameForeground;
            if (this.rainFrameForeground > 7)
                this.rainFrameForeground -= 8;
            if (this.rainFrameCounter <= 2)
                return;
            this.rainFrameCounter = 0;
            --this.rainFrameBackground;
            if (this.rainFrameBackground >= 0)
                return;
            this.rainFrameBackground = 7;
        }