Game Maker：Studio - 具有不同alpha的2个绘图对象

Question

//Object 1: (draw event)
draw_text(x,y, global.Score);
draw_set_alpha(0.5);
//Object 2: (draw_event)
draw_text(x,y, global.highscore);
draw_set_alpha(1);

问题是，绘制的对象（没有精灵）有​​时会从另一个中获得alpha，甚至忽略＆＃34; draw_set_alpha（）;＆＃34; （步骤事件中相同）

Answer 1

当您使用draw_set_alpha（）以及其他draw_set_ ..方法时，您可以更改全局设置，以便在整个项目之后绘制所有内容。

通常，在绘制所需内容后，还原此类设置。因此，根据您上面的代码，您应该使用：

//Object 1: (draw event)
var prev_alpha = draw_get_alpha(); //getting current alpha settings
draw_set_alpha(0.5); // setting needed alpha
draw_text(x,y, global.Score); //drawing text with 0.5 alpha
draw_set_alpha(prev_alpha); // setting alpha setting back

// the same for the second object
//Object 2: (draw_event)
var prev_alpha = draw_get_alpha();
draw_set_alpha(1);
draw_text(x,y, global.highscore);
draw_set_alpha(prev_alpha);