[英]Processing - Make an object disappear and appear in certain frames of time
This is my current code: 这是我当前的代码:
int doorCounter = 0;
void setup()
{
size(512, 348); //width and height of screen
doorCounter = (int)random(180,300);
}
void draw()
{
display();
doorCounter = doorCounter - 1; // Decrease count by 1
if (doorCounter <= 0)
{
fill(255);
rect(420, 190, 55, 100); //house door outline
rect(435, 210, 25, 25, 7); // house door window
ellipse(435, 255, 8, 8); // house door handle
doorCounter = (int)random(180,480);
}
}
void display()
{
fill(255);
rect(420, 190, 55, 100); //house door outline
fill(0,0,0); // fill the following polygons in black
rect(435, 210, 25, 25, 7); // house door window
ellipse(435, 255, 8, 8); // house door handle
}
However what this code does is just makes the object disappear for a fraction of a second and just makes it reappear instantly. 但是,这段代码所做的只是使对象消失了一秒钟,并使它立即重新出现。 How do I make it so that the object stays disappeared for 3-8 seconds on a random interval just like how the object disappears every 3-8 seconds given that its still on the screen?
如何使对象保持随机间隔消失3-8秒,就像对象仍然在屏幕上时每3-8秒消失一样?
Ps I don't know if what I'm trying to achieve makes sense so please feel free to question. 附:我不知道我要实现的目标是否有意义,请随时提出疑问。
An idea is to use a timestamp and check the time elapsed from it, something like this: 一个想法是使用时间戳记,并检查它经过的时间,如下所示:
int min_time = 3000; // in ms
int max_time = 8000; // in ms
int time_frame = (int)random(min_time, max_time);
int time_stamp = 0;
boolean show_door = true;
void setup()
{
size(512, 348); //width and height of screen
}
void draw()
{
background(200);
int time_passed = millis() - time_stamp;
if (time_passed < time_frame && show_door) {
display();
} else if (time_passed >= time_frame) {
time_stamp = millis();
time_frame = (int)random(min_time, max_time);
show_door = !show_door;
}
}
void display()
{
fill(255);
rect(420, 190, 55, 100); //house door outline
fill(0, 0, 0); // fill the following polygons in black
rect(435, 210, 25, 25, 7); // house door window
ellipse(435, 255, 8, 8); // house door handle
}
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