Terraria.Player.FindPulley C# (CSharp) Method

        public void FindPulley()
        {
            if (!this.controlUp && !this.controlDown)
                return;
            int index1 = (int)((double)this.position.X + (double)(this.width / 2)) / 16;
            int index2 = (int)((double)this.position.Y - 8.0) / 16;
            if (Main.tile[index1, index2] == null || !Main.tile[index1, index2].active() || !Main.tileRope[(int)Main.tile[index1, index2].type])
                return;
            float num1 = this.position.Y;
            if (Main.tile[index1, index2 - 1] == null)
                Main.tile[index1, index2 - 1] = new Tile();
            if (Main.tile[index1, index2 + 1] == null)
                Main.tile[index1, index2 + 1] = new Tile();
            if ((!Main.tile[index1, index2 - 1].active() || !Main.tileRope[(int)Main.tile[index1, index2 - 1].type]) && (!Main.tile[index1, index2 + 1].active() || !Main.tileRope[(int)Main.tile[index1, index2 + 1].type]))
                num1 = (float)(index2 * 16 + 22);
            float x1 = (float)(index1 * 16 + 8 - this.width / 2 + 6 * this.direction);
            int num2 = index1 * 16 + 8 - this.width / 2 + 6;
            int num3 = index1 * 16 + 8 - this.width / 2;
            int num4 = index1 * 16 + 8 - this.width / 2 - 6;
            int num5 = 1;
            float num6 = Math.Abs(this.position.X - (float)num2);
            if ((double)Math.Abs(this.position.X - (float)num3) < (double)num6)
            {
                num5 = 2;
                num6 = Math.Abs(this.position.X - (float)num3);
            }
            if ((double)Math.Abs(this.position.X - (float)num4) < (double)num6)
            {
                num5 = 3;
                Math.Abs(this.position.X - (float)num4);
            }
            if (num5 == 1)
            {
                x1 = (float)num2;
                this.pulleyDir = (byte)2;
                this.direction = 1;
            }
            if (num5 == 2)
            {
                x1 = (float)num3;
                this.pulleyDir = (byte)1;
            }
            if (num5 == 3)
            {
                x1 = (float)num4;
                this.pulleyDir = (byte)2;
                this.direction = -1;
            }
            if (!Collision.SolidCollision(new Vector2(x1, this.position.Y), this.width, this.height))
            {
                if (this.whoAmI == Main.myPlayer)
                    Main.cameraX = Main.cameraX + this.position.X - x1;
                this.pulley = true;
                this.position.X = x1;
                this.gfxOffY = this.position.Y - num1;
                this.stepSpeed = 2.5f;
                this.position.Y = num1;
                this.velocity.X = 0.0f;
            }
            else
            {
                float x2 = (float)num2;
                this.pulleyDir = (byte)2;
                this.direction = 1;
                if (!Collision.SolidCollision(new Vector2(x2, this.position.Y), this.width, this.height))
                {
                    if (this.whoAmI == Main.myPlayer)
                        Main.cameraX = Main.cameraX + this.position.X - x2;
                    this.pulley = true;
                    this.position.X = x2;
                    this.gfxOffY = this.position.Y - num1;
                    this.stepSpeed = 2.5f;
                    this.position.Y = num1;
                    this.velocity.X = 0.0f;
                }
                else
                {
                    float x3 = (float)num4;
                    this.pulleyDir = (byte)2;
                    this.direction = -1;
                    if (Collision.SolidCollision(new Vector2(x3, this.position.Y), this.width, this.height))
                        return;
                    if (this.whoAmI == Main.myPlayer)
                        Main.cameraX = Main.cameraX + this.position.X - x3;
                    this.pulley = true;
                    this.position.X = x3;
                    this.gfxOffY = this.position.Y - num1;
                    this.stepSpeed = 2.5f;
                    this.position.Y = num1;
                    this.velocity.X = 0.0f;
                }
            }
        }