Discussions

spawning = adding an object to the world You have to replace line 1 of your last shown code with the line given.

Yes. You will find the answers there. It is the part labelled: <Code Omitted>in the moveVertically method.

You have a grave misunderstanding about extending classes. An extension to a class, in design, is to modify or sub-classify a type of object. For example, if you had an Insect class, its extensions could feasibly be Fly, Bee, Moth, Locust, JuneBug, etc. All objects created from these extensions are still Insect objects. A Counter object is clearly not a MiddleInvisible object. There are multiple previous discussions dealing with keeping a current score when changing worlds. Do a search and check some out.

OH wait, you're right... I tried another way and it works much better and keeps the "hopping" at a constant distance! My bad :P

nvm

Remove line 34 (does nothing but create an unused object). The condition on line 20 will never evaluate true as only zero (0) can be randomly returned using one (1) on line 19.

If you want other things to happen while the fading is taking place (not specified), you cannot use a while loop. To fade, you must repeatedly change the transparency value (you consistently set a zero value).

thx

Again, you have an image which has the size 100/100. You have to draw inside this image (0..99 for x and y) if you want to see it. You draw from (400|450) to (500|450) which is outside the image. Imagine you have a piece of paper lying on a desk. If you draw on the desk, then it won't be visible on the paper.

In the above example, the rotation is set before the bullet is added into the world.

You can make it static as long as you assign the array values in your world constructor:

(1) set color white; (2) draw line; (removes old line) (3) adjust coordinates of line; (4) set color black; (5) draw line; (draws new line)

Do you: (1) create; and (2) add a new Timer object into the world before calling the Timer method on it?: <Code Omitted>

In a scenario running at normal speed (speed = 50), about 60 act cycles.

it works. thanks a lot.