Me and my mates are creating a space game and we are stuck on the hit detection we want are bullet(class called lazer) to when it hits the enemy(named enemy1) to both disappear when hit. Please may someone suggest some code
zworrub wrote ...
2014/3/26
Space game hit detection
Basically (in pseudo-code):
if can see other, eat other and remove self
Does that maybe help? If not, review the Animal class code for help. It comes with the greenfoot download. You should be able to use the menubar to import the class by "Edit>Import class...".
I read somewhere that this is the code but it doesnt seem to work
public void hitDetection() {
Actor Lazer = getOneIntersectingObject(Enemy1.class);
if( Lazer != null)
{
getWorld().removeObject(Lazer);
getWorld().removeObject(this);
}
}
Although the name 'Lazer' does not reflect what the Actor object actually is (an Enemy1 class object), the code in itself should work. Maybe 'hitDetection' is not actually being called. Will need to see the 'act' method of this class (I presume it is the Lazer class). Come to think of it, there may be a more general type coding problem here. Please post the entire Lazer class. And, please use the 'code' link below the 'Post a reply' box to insert your code.
public void act(){
setLocation(getX()+15, getY());
if( getX() <=4 || getX() >= getWorld().getWidth()-2)
{
getWorld().removeObject(this);
return;
}
}
public void hitDetection() {
Actor Lazer = getOneIntersectingObject(Enemy1.class);
if( Lazer != null)
{
getWorld().removeObject(Lazer);
getWorld().removeObject(this);
}
}
Could you tell me how to do that please because my teacher really isn't helping me with this haha
Once an object is created, the only way for it to do anything (on its own) is by use of the 'act' method of its class. Everything else must be in some way linked to that act method. Call 'hitDetection' from the 'act' method of the class so that it will execute:
// insert between lines 9 and 10 above hitDetection();
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