"How do I ZScript?"

Post by **Major Cooke** » Fri Mar 24, 2017 5:07 pm

...yeah, the positioning and sizing of sbarinfos and stuff is completely fucked right now.

Ed the Bat · Post by **Ed the Bat** » Sat Mar 25, 2017 2:48 pm

How can I ensure a PlayerEntered event only happens when coming in to the map, and not when loading a saved game?

Post by **Major Cooke** » Sat Mar 25, 2017 3:03 pm

You can use a transient flagged variable. Those aren't saved.

Minigunner · Post by **Minigunner** » Sat Mar 25, 2017 3:21 pm

I've been attempting to get the Actor of a friendly monster's FriendPlayer (the number of the player it follows), and using "players[friendplayer - 1].mo" (I used an int variable to replace friendplayer - 1) always returns NULL. Am I getting something wrong here?

Ed the Bat · Post by **Ed the Bat** » Sat Mar 25, 2017 3:22 pm

Major Cooke wrote:You can use a transient flagged variable. Those aren't saved.

I'm... a bit lost, there. Could you show me an example, please?

Post by **Major Cooke** » Sat Mar 25, 2017 3:23 pm

Code: Select all

transient int something;

I think that's how it goes. Anyway the point is, that will initialize to 0 when a saved game is loaded because it's not saved. Slap that on an event handler or whatever. It won't ever save.

Post by **ZZYZX** » Sat Mar 25, 2017 3:35 pm

Ed the Bat wrote:How can I ensure a PlayerEntered event only happens when coming in to the map, and not when loading a saved game?

It should not fire when loading a saved game, if it does, then it's a bug.

Ed the Bat · Post by **Ed the Bat** » Sat Mar 25, 2017 3:37 pm

I'll make a bug report for it on the tracker, then.

Post by **Nash** » Sat Mar 25, 2017 6:42 pm

ZZYZX wrote: It should not fire when loading a saved game, if it does, then it's a bug.

If that bug is fixed, is there another way to detect a save game is loaded? I remember you actually advertising that as a feature.

Post by **ZZYZX** » Sat Mar 25, 2017 10:31 pm

Transients or (in a StaticEventHandler) you can check it in WorldLoaded.

Post by **Nash** » Sun Mar 26, 2017 3:09 am

Nash wrote:Screen.DrawText/Texture question:

Is it possible to position something in the same resolution as whatever the current user's resolution is, BUT have the graphic always RENDER at a fixed resolution, say 320x200? So for example, if the user is using 1920x1080, the draw canvas would have more precision for you to position the object, but the graphic that's blitted to the screen should always look blocky like as if the screen was 320x200.

Which Draw Tag should I use to achieve this?

ZZYZX wrote:Use VirtualWidth and VirtualHeight, and just calculate fractional offsets based on the real resolution. (x,y are doubles, as well as VirtualWidthF/VirtualHeightF)
Note: don't forget to DTA_KeepRatio.

This is not working. I set DTA_VirtualWidth/Height to Screen.GetWidth()/GetHeight() and now the graphic is ultra tiny because I'm using 1920x1200.

I need the SCALE to look big, but with the pixel positioning of the user's display resolution.

(Should I feature request explicit scale DTA tags?)

Post by **Graf Zahl** » Sun Mar 26, 2017 2:08 pm

ZZYZX wrote:
Nash wrote:If a Thinker (non-Actor) is made using new(), added into an array, and then later is deleted from the array using Delete()... will it be truly removed? Actually what's the safest way to remove it? myArray.Delete(index, 1) or myArray[index].Destroy()?
When last reference to an object is lost, thinker should be deleted, but that's unless there's a global list of thinkers somewhere, like one for Actors. Graf, help.

Of course there's a global thinker list. That is needed to actually process any thinkers.
Any thinker, including any actor will only be destroyed if Destroy is actually being called on it - as long as the thinker chain holds a reference to it it will remain active.

Post by **Major Cooke** » Sun Mar 26, 2017 3:54 pm

And that's why I said to call Destroy before deleting the array index, because they can be found by iterators.

Post by **Graf Zahl** » Sun Mar 26, 2017 5:46 pm

Nash wrote: (Should I feature request explicit scale DTA tags?)

No: Use DTA_DestWidth/DTA_DestHeight.

Post by **ZZYZX** » Sun Mar 26, 2017 6:39 pm

Nash wrote:
ZZYZX wrote:Use VirtualWidth and VirtualHeight, and just calculate fractional offsets based on the real resolution. (x,y are doubles, as well as VirtualWidthF/VirtualHeightF)
Note: don't forget to DTA_KeepRatio.
This is not working. I set DTA_VirtualWidth/Height to Screen.GetWidth()/GetHeight() and now the graphic is ultra tiny because I'm using 1920x1200.

I need the SCALE to look big, but with the pixel positioning of the user's display resolution.

(Should I feature request explicit scale DTA tags?)

You aren't doing it right then.
How to do it right:

Code: Select all

void RenderScaled(TextureID tex, double x, double y, double scaleX, double scaleY)
{
  double vw = double(Screen.GetWidth())/scaleX; // let's assume scaleX is 2.0, this means virtualwidth will be divided by 2
  double vh = double(Screen.GetHeight())/scaleY;
  x /= scaleX; // same for x coordinate, so the coordinate is scaled as well (from pixel to virtual)
  y /= scaleY;
  // here use x,y for coordinates and vw/vh for virtualwidthf/virtualheightf
  // coordinates are fractional so there won't be precision loss with low virtualwidth/virtualheight.
}

DTA_KeepRatio=true is needed because otherwise virtualwidth/virtualheight won't work on the actual resolution.

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