Silly little rounding qroblem

[pikzilla]

Simply put, I have alterable values which round off important additions. For instance, a very small amount is added every frame to a value representing the X scale of an object. The amount, 0.07, is simply never added to the value, and so of course the mechanism does not function. How can I defeat this?

[Jahkri]

Hi Pikzilla,

i just tried it and for me it works. I just added two Condition/Actions to the Frame and it works for me.

I' ve inserted a String-Object to display the Value of "Global Value A"

1. + Always
- Set alterable String to Str$(Global Value A)
2. + User clicks with left Button
- Add 0.07 to Global Value A

Thats it. For me it works. The String Object displays 0 at start and on every click it adds 0.07 to the Global Value A (ex. 0.07, 0.14, 0.21, 0.28, 0.35, 0.42, and so on).

Greets

jahkri

[pikzilla]

Thanks for helping me out here.

I couldn`t really put my finger on how what I was trying to do differed from yours, so I just spliced out the relevant bits and stuck them in their own file.
http://www.mediafire.com/?ovj7c9622l486b6

Pretty simple setup, really. The laser objects are created on the boss, angled toward the red square, then put into a period of growth, where their value spd is added every frame to their value Growtimer, until they grow to a certain amount and start moving toward the square. The spd value is divided by 100 to account for the fact that the laser sprite is one hundred pixels long. Thus, the pixel length of the sprite is one hundred times the growtimer value. Of course, growtimer somehow has a habit of hanging out at zero forever, so none of this actually happens.

In the past, the laser sprite was only a single pixel long, and the spd value was never divided. That worked fine, and the fact that the change here caused the problem leads me to believe that the issue is with rounding.

[gastrop0d]

Try dividing by 100.0 rather than 100. In fact turn every single operand into a non-integer. When I'm having trouble with stuff like this I will go to an extreme like:

d = ((x*1.0 / p*1.0) + 5.0) * 40.0

That way it is CERTAIN that everything in the equation is being treated as a float and nothing is being truncated or rounded off.

[pikzilla]

Boy, that was simple!
Thanks to everyone for helping me with my stupid little problem here!