does somebody can create gravity? if yes please told me how to do it
WINER8 wrote ...
2020/10/30
how to do gravity?
WINER8 wrote...
does somebody can create gravity? if yes please told me how to do it
Say you have a class Player. This class should extend SmoothMover, a Greenfoot class that uses floating-point variables to store the actors position. You can import it by right-clicking onto the panel with „Actor“ in Greenfoot and selecting „Import“.
To store the current speed of the player we create a double variable.
Now every frame the player needs to move that speed.
Now also every frame the vertical speed has to increase by a certain amount which is the effect of gravity.
public class Player extends SmoothMover {
public void act() { }
}
public class Player extends SmoothMover {
// vY stands for velocity in Y direction
private double vY = 0;
...
public void act() {
// getExactX/Y are methods from SmoothMover that return the location as double
setLocation(getExactX(), getExactY() + vY);
}
...
private static final double GRAVITY = 0.1;
public void act() {
vY += GRAVITY;
...
RcCookie when i was writing the code "setLocation(getExactX(), getExactY() + vY);" the greenfoot inform me there are not method getExactX() and method getExactY() can you help me please
WINER8 wrote...
RcCookie when i was writing the code "setLocation(getExactX(), getExactY() + vY);" the greenfoot inform me there are not method getExactX() and method getExactY() can you help me pleaseRcCookie wrote...
Say you have a class Player. This class should extend SmoothMover, a Greenfoot class that uses floating-point variables to store the actors position. You can import it by right-clicking onto the panel with „Actor“ in Greenfoot and selecting „Import“.
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