KeyPress doubt

jonaspm · Post by **jonaspm** » Thu Jul 19, 2012 1:51 am

Hello Ville and all ZGE community!

I have a question, since im too noob for ZGE... lol

i made this:

but i don´t know how to use KeyPress to rotate a bit the spacecraft to the left and right (Z?)

can you please help me?

jonaspm · Post by **jonaspm** » Thu Jul 19, 2012 7:15 am

Ville, i recommend you to open a category on the forum with the name of Newcomers

So they can ask all their noobie stuff

Post by **Kjell** » Thu Jul 19, 2012 7:49 am

Hi jonaspm,

Attached is a example of the easiest way to do this.

What kind of game are you trying to make?

K

Rado1 · Post by **Rado1** » Thu Jul 19, 2012 8:48 am

Hi jonaspm,

just a small tip how to achieve more natural behavior. In the example from Kjell change the following expressions in the OnUpdate section of Model:

Code: Select all

CurrentModel.RotationVelocity.Z = 0; ---> CurrentModel.RotationVelocity.Z *= 0.9;

CurrentModel.RotationVelocity.Z += 1; ---> CurrentModel.RotationVelocity.Z = 1;

CurrentModel.RotationVelocity.Z -= 1; ---> CurrentModel.RotationVelocity.Z = -1;

Post by **Kjell** » Thu Jul 19, 2012 8:59 am

@Rado1

You probably don't want to mix framerate dependent ( *= 0.9 ) and independent ( Velocity ) techniques though. Since I'm using SyncedWithMonitor the deceleration will be slower on monitors with lower refresh-rate / devices with lower performance, while the effective rotation velocity will the constant regardless of framerate.

Also, by changing "-=" and "+=" to "=" the rotation won't stop when you're pressing both left and right at the same time ( which I personally find desirable ).

K

Rado1 · Post by **Rado1** » Thu Jul 19, 2012 10:24 am

Kjell - yes, you are right. This was just a simplified "didactic" example of how to achieve such an effect easily. In reality, I would use FPS-independent solution, similar to the attached one. (Optionally, I would maybe access rotation directly, not by velocity.)

jonaspm · Post by **jonaspm** » Thu Jul 19, 2012 10:13 pm

im working on a 3D space shooter, however im more than newbie in ZGameEditor, so im having lot of questions and doubts e.e

i changed from programming the entire game in BASIC to ZGE... i think is faster this way

jonaspm · Post by **jonaspm** » Fri Jul 20, 2012 6:54 pm

hey, i have another question, sorry if i have a lot :$

¿How can i change the cursor icon?

i would like to use it as a sight

Post by **Kjell** » Fri Jul 20, 2012 8:04 pm

Hi jonaspm,

jonaspm wrote:How can i change the cursor icon?

Depends a little on how you want to handle this ( technically ). A common way is to hide the Windows cursor and show a sprite instead* Attached is a example on how to do this ( albeit a little awkward, the Font component is actually the easiest way to pull this off ).

*The windows cursor will only be hidden in a standalone executable, not in the Editor.

K

jonaspm · Post by **jonaspm** » Fri Jul 20, 2012 8:38 pm

thanks Kjell, i´ll test it

jonaspm · Post by **jonaspm** » Sat Jul 21, 2012 12:56 am

ok, so i tested it, and works perfectly, however i have a problem, the image shows with black background, and it shouldn´t since the background is trasparent (.png alpha channel)

Post by **Kjell** » Sat Jul 21, 2012 8:11 am

Hi jonaspm,

jonaspm wrote:the image shows with black background, and it shouldn´t since the background is trasparent

Simply change the Blend property of your cursor Material into "Alpha/OneMinusSourceAlpha"

K

jonaspm · Post by **jonaspm** » Sat Jul 21, 2012 8:20 am

OMG! thanks!!! I should have tried that