How can I (if possible) controll a variable in "SpaceInvader" class from my "player" class?? (I need to be able to control some of the game stated from the "Player" class??
I thought it only was to write "extends Player" in my "SpaceInvader" class, and use the variable as it was made in "SpaceInvader"..??
Hans-Petter
[java] trouble x 10
Author
Just write my question again in a new thread
How can I (if possible) controll a variable in "SpaceInvader" class from my "player" class?? (I need to be able to control some of the game stated from the "Player" class??
I thought it only was to write "extends Player" in my "SpaceInvader" class, and use the variable as it was made in "SpaceInvader"..??
Hans-Petter
How can I (if possible) controll a variable in "SpaceInvader" class from my "player" class?? (I need to be able to control some of the game stated from the "Player" class??
I thought it only was to write "extends Player" in my "SpaceInvader" class, and use the variable as it was made in "SpaceInvader"..??
Hans-Petter
Could u write down some psudocode for what you want to do? I''m not usre I get hwat you want to say....
Author
ok, this is preaty much like I have done it:
------------------------
class player {
final int intro=1;
final int playgame=2;
int state=intro;
void handleinput() {
if( keyDown ) {
// I want to change the state here
state = playgame;
}
}
}
class space extends player {
(and in the rungame method):
handleinput();
switch() {
case intro:
break;
case playgame:
break;
}
}
------------------------
The strange thing is, this is working if I change the state in the "player" constructor only, but if I change it in any other method, it do not work.. :/
Hans-Petter
try placing a super before referencing the variables in the space class. super.state=super.playgame or something lik ethat.... not sure if it will help at all, but maybe it''s wortha try....
Author
no, i still can''t make it work.. hehe, the reason is probably just becaouse I''m very stupid, but is''t this like the heaven of OOP??
Hans-Petter
Hans-Petter
Did you forget something like private/protected/public ?
Variables in the base class must be public to allow access from outside, or protected if they shall be accessed from a derived class (like in your case).
Variables in the base class must be public to allow access from outside, or protected if they shall be accessed from a derived class (like in your case).
quote:Original post by sushi-one
no, i still can''t make it work.. hehe, the reason is probably just becaouse I''m very stupid, but is''t this like the heaven of OOP??
Hans-Petter
The thing is that the way you describe it it should work.
public class test { public static final int STATE_1=0; public static final int STATE_2=1; protected int state; public test(){ state=STATE_1; } public static void main(String[] arg){ test2 ts=new test2(); }} class test2 extends test { public test2(){ super(); System.out.println("Initial state is="+state); System.out.println("Changing state..."); state=STATE_2; System.out.println("Final state is="+state); }} This code snippet works fine. Is this something like what you wanted or...?
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