リファレンス URL：view_current

「実数 (Real) 」として値取得。

read only variable

only valid in the Draw Event 

and returns the current view being rendered.

スクリプト・サンプル
if view_current = 0
   {
   draw_text(view_xview[0] + 32, view_yview[0] + 32, "Player 1");
   }
else
   {
   draw_text(view_xview[1] + 32, view_yview[1] + 32, "Player 2");
   };