How to make it that nothing moves until the left,right,up or down key is pressed?
sumrandom wrote ...
2014/5/29
nothing happen until is key is pressed
I think you need to be a bit more specific as to what you are trying to do. Like, give info as to when you are trying to do this; whether you will be doing this just once at whatever time or multiple times at specified times include what specified times); whether the arrow keys are supposed to control a specific object or not; etc.
I think he is just looking for a variable that makes sure no one acts until the player moves. I have done something like this:
in every monster or anything that can move or do something act method:
class Player extends Actor{
static boolean hasMoved = false;
void act()
{
//input code here and if input has happened then set hasMoved to true
hasMoved = true;
//never set it back to false, until the player dies.
}
}//every other act (not the player class) in the universe has this in it:
void act()
{
if(!Player.hasMoved)
{
return;
}
// the rest of your act routine goes here
}Hello Lord Hershey. Thank you for being so kind and informative to a new programmer- however, I must inform you that this is most likely a student who is doing the course I coordinate (Programming Fundamentals) at the University of Western Sydney (UWS). For their major assignment, I have assigned my students the task of recreating the popular 'Pac man' game in Greenfoot, and I have given them a few methods pre-written to help them out. The lectures I have given, and the information supplied online at the UWS site are more than enough to be able to complete this assignment, and I am disappointed they are seeking help online- especially at such a late date, given that the assignment's final submission date is in 4 hours. Please do not assist my students in the future. To the student, 'sumrandom', if I do find this code in any assignment you will be investigated for further plagiarism. Kind regards, Anton Bogdanovych.
@Anton investigate away, it cannot be plagiarism if I wrote the code. I will assist anyone who asks anything if I can answer it. I do not appreciate veiled threats. Thanks.
Hi Lord Hershey, thanks for your response. I did not intend at all to reprimand you- my concerns were to my student, "sumrandom". In the UWS handbook, the code of conduct contains a section about plagiarism. Unless otherwise specified, all work is to be the student's original contribution. If he were to take your code and insert it into his major assignment, I would be forced to penalise him and contact the university administration. Thanks for being understanding, Anton Bogdanovych.
I can understand that, if you want to check for illicit collaboration use a tool like JPlag there are others out there as well. Sometimes a regular diff on an object file will reveal cheating, or you can use a printout of javap:
C:\Users\JohnHershey\Desktop\greenfoot\scenarios\DragonFire>javap Dragon
Compiled from "Dragon.java"
public class Dragon extends greenfoot.Actor {
static greenfoot.GreenfootImage image;
static greenfoot.GreenfootImage imagefire;
public greenfoot.GreenfootImage use_image;
public greenfoot.GreenfootImage use_imagefire;
boolean goLeft;
int walkcounter;
int headupcount;
public int firecounter;
public int speed;
public int firecounterreset;
public int walkcountermax;
public int walkcounterdivisor;
public int bulletspeed;
Dragon$State playerState;
public Dragon();
public void act();
static {};
}
even if they change the variable or routine names you will be able to see similar structures, if they don't then that just makes your job much easier.
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