Discussions

Yes, it does have something to do with vectors; but, you do not have to deal with them directly. You can use the 'turnTowards' method of the Actor class to direct the "projectiles" toward your tank.

The code supplied cannot throw that exception, unless you misplaced the last line of code given (it should be in act method or method called by the act method).

I am finding it difficult to follow your code here. I presume that the code is in a ShootingBall class, which creates ShootingBall objects. It does not matter what image you give the objects, they will always be ShootingBall objects. If you want to turn one into a brick, add a new brick object and remove the ShootingBall object ('this'). Possibly you should have an Arrow class also to do similarly with, instead of calling 'buildUpArrowImage'. With these changes, in all cases, no ShootingBall object will be in the world; so, your world class can just ask one question to shoot a new ball:

??? Maybe copy the first loop and change the y-coordinate value ???

The first statement within the method will reset the value of 'fuelElapsed' back to '100' every time the method is called. Its value should be set to 100 when the Rocket object is created (or when it is added into the world). Next, "Space" should be "space" (with a lowercase 's'). The two lines executed when the spacebar is pressed are both problematic. The first line will automatically sets 'fuelElapsed' to a value less then '10' and the second line called the method that is currently being executed. This is not unlike an infinite loop and will freeze the program until an exception is th

The method is in the TrafficLight class, not the Actor class. Therefore, the field holding the TrafficLight object needs to hold a TrafficLight object, not just any Actor object: <Code Omitted>

thnx

anytime

The range would have to be ten, if the speed is ten: <Code Omitted>and that is only if the actor has a rotation of 90. Like I said before, the placement and rotation of the actor are two factors that determine where it will be positioned on each act cycle.

my bad stupid mistake not wat I meant though

thnx

The code from line 18 to 21 resets the car. Add the condition to line 17: <Code Omitted>

So you need the variable in your world? Save a reference to the object when creating it. Then you can use the methods on this object. <Code Omitted>

Is this what you want? <Code Omitted>

i tried to open a class and it didnt open just showed an error window with that error 4 times and i fixed it by closing and opening the program i just wanted to know wat it is