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Delucaria
Delucaria wrote ...

2017/10/7

Changing the speed of my Actor

Delucaria Delucaria

2017/10/7

#
Hey, I got a problem with my code and I don't know what could possibly be wrong. I want my actor to move faster by pressing a and slower by pressing d. It's working just fine for the faster part, but it doesn't work for the slowing down one. My code looks like this: public void act() { int speed=1; move(speed); if (Greenfoot.isKeyDown("up")){ setRotation(270); } if (Greenfoot.isKeyDown("down")){ setRotation(90); } if (Greenfoot.isKeyDown("left")){ setRotation(180); } if (Greenfoot.isKeyDown("right")){ setRotation(0); } if (Greenfoot.isKeyDown("a")){ speed = speed+1; move(speed); } if (Greenfoot.isKeyDown("d")){ speed = speed-1; move(speed); } }
Super_Hippo Super_Hippo

2017/10/7

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Put the 'int speed=1' part out of the act method or you are setting it to 1 every time again.
Delucaria Delucaria

2017/10/7

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But if I delete it, Greenfoot tells me speed isn't initialized. Even if it would be set to 1 every time, then the speed up wouldn't work either I guess, but it does work. I'm just confused as to why the speed up if method works, but the speed down one doesn't
danpost danpost

2017/10/7

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Delucaria wrote...
But if I delete it
Hippo did not say to delete it -- what was said was to move the line so that it is outside the act method (move the two lines above it down so that they are below that line).
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