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function movenemies() {
gametime = gametime + 1
if (gametime >= 0 && gametime < 100) speed = 80;
else if (gametime >= 100 && gametime < 200) speed = 60;
else if (gametime >= 200 && gametime < 300) speed = 40;
else if (gametime >= 300 && gametime < 400) speed = 30;
else if (gametime >= 400 && gametime < 500) speed = 20;
else speed = 10;
// window.status = "speed: " + speed + " gametime: " + gametime;
movenemy(0,-10,12);
movenemy(1,-12,-20);
movenemy(2,15,-13);
movenemy(3,17,11);
setTimeout(movenemies,speed);
}
请尽情修改吧.
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