u could do it with a constructor, only one bullet class and a boolean left wich is true if the left arrow key was pressed and false if the right arrow key was pressed.:P

In greenfoot the "isTouching()" simplifies his collision-check why shouldnt he get to know that ? Better collisions would make this game more playable & more like FlappyBirds. I dunno what u mean, hes a beginner and ist definetly no crap if heuploads his secenario and asks for help. @tradejak66: I just read ur description :D U could stop reset the timer by adding constructors or doing the collisonCheck() by the world. Then ure able to reset the score int of the worlds score object by simply changing it or creating getters & Setters :)

Haha very cute Idea :) Santa is to fat for some corners in the maze :P You could have done things easier like a contructor for an enemy class. In addition you could create more intelligent AI.

Maybe use the "isTouching" boolean for collision so you can make it playable :P. In my opinion u also have to remove the Greenfoot.delay(25); and u could make a better fly-engine -(means more beauty and smooth movements :)) I guess you are a beginner so here a tip: (i dont guarantee for the best way doin that :D) create a pointer variable wich u move on a horizontal line in the distance of the movement of the obstacles- ur actor follows it (maybe turnTowards()) :).