Greenfoot

Hpage17

2015/8/7

#

Hey, so I'm doing a project in class, and I want an enemy to follow an Actor. If someone could give me code to use or a game that has this, plz show or tell me ASAP!

jackandjim

2015/8/8

#

so it a little depends on what game you have in any case you will need getMethods for your actor like this one :

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public int getX(){
    return xPos;
}

your enemy now wants to move to your actor let's say its like a mario 2d game where you want the enemy just to move on the x-axis then how your enemy follows your actor could look like this (in the enemy class)

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//all this happens in enemy class
//xPos = the actual position of the enemy
//speed = the speed of the enemy
 
private void followActor(){
    if(xPos < actor.getX()){
        xPos =  xPos + speed;
    }else if(xPos > actor.getX()){
        xPos =  xPos - speed;
    }
}

danpost

2015/8/8

#

jackandjim wrote...

in any case you will need getMethods for your actor like this one :

1

2

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public int getX(){
    return xPos;
}

This method is quite redundant. You already have a 'getX' method from the Actor class that you can use on any actor within a world object, which gets the value from the private Actor class 'x' field.

so it a little depends on what game you have

Indeed, the viewing direction and the particular movement of the enemy you require play a part in how it is coded and the code itself could be quite simple or quite complex.

jackandjim

2015/8/8

#

Oh yeah, you're right Haven't used greenfoot soooo long I forgot about that

Hpage17

2015/8/9

#

Ok, I will try as soon as I have my computer.

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Need an Actor to follow another actor!