how would i code an actor to move smoothly eg 10 spaces if a button has been pressed once?
Jeph wrote ...
2015/6/2
sliding
Add an int step counter field. Set it o 10 when the button is pressed. Only move and decrement the counter when it is not zero.
please like and vote guys :3
http://www.greenfoot.org/scenarios/14062
@danpost hmm i tried ,but was i even close -_-
int mCount=10;
public void mcount()
{
mCount--;
}
/**
* Act - do whatever the Player2 wants to do. This method is called whenever
* the 'Act' or 'Run' button gets pressed in the environment.
*/
public void act()
{
CheckKey();
if(mCount==6)
{
mCount=10;
}
//replace();
//turn();
}
public void CheckKey()
{
if (Greenfoot.isKeyDown("w")&&mCount<=5)
{
setLocation(getX(),getY()-mCount);
mcount();
As written, if you trace what happens when the act method is called, you end up with this (starting with the value of 'mCount' at '10' via line 1):
* the CheckKey method is called (line 13) where the 'if' clause (line 24) will result in a false value as the value of 'mCount' is '10' (not less than or equal to '5')
* the 'if' condition on line 14 is checked also resulting in a false value as the value of 'mCount' is still '10' (not equal to '6')
As you can see, the value of 'mCount' will never change with what you have there.
Things that are not what I suggested:
* I said "Set it to 10 when the button is pressed" (not "initially")
* I said to both "move and decrement" the counter when it is not zero (not "when it is less than '5'")
There are also misunderstandings here. You initially said "if a button has been pressed once". You evidently (1) were referring to a key on the keyboard (not a mouse button); and (2) were referring to the initial down-stroke of the key (not the state of the key being down, which your code suggests). With this new and corrected information, I will suggest that you will also need a boolean field to track the state of the key (whether it was last down or not) so you can determine when the state has changed
danpost wrote...
Add an int step counter field. Set it o 10 when the button is pressed. Only move and decrement the counter when it is not zero.@danpost
i tired this and the boolean but i know its wrong @_@
int mCount;
public void mcount()
{
mCount--;
}
/**
* Act - do whatever the Player2 wants to do. This method is called whenever
* the 'Act' or 'Run' button gets pressed in the environment.
*/
public void act()
{
CheckKey();
if(mCount==0)
{
mCount=10;
}
}
public void CheckKey()
{
if (Greenfoot.isKeyDown("w"))
{
mCount= 10;
if(mCount>0)
{
setLocation(getX(),getY()-mCount);
mcount();
}
}/**
* return true if a keyboard key is pressed down
* else return false
*/
public boolean keyPressed()
{
if(Greenfoot.isKeyDown("w")||Greenfoot.isKeyDown("s")||Greenfoot.isKeyDown("a")||Greenfoot.isKeyDown("d"))
return true;
else
return false;
}You need to login to post a reply.