Reset sector floor texture after it's changed by a linetrace

[Night Falls]

I'm working on a top-downish game that looks down at the map at a 45 degree angle. I've made some code that makes the floor of any sector the player is standing behind null so you can see through it.
This is executed by the camera, which fires a linetrace at the player constantly, and if it hits a sector instead of the player, it sets that sector's floor texture to null.

Code: Select all

FLineTraceData BehindSector;
        bool hit = LineTrace(90,9000,45,TRF_THRUBLOCK,0,0,0,data: BehindSector);
			
	if (hit && BehindSector.HitType == TRACE_HitFloor)
      {
			if(BehindSector.HitSector.GetTexture(sector.floor) != TexMan.CheckForTexture("null",TexMan.Type_Any))
			{
				textureid behindtexture;
				behindtexture = BehindSector.HitSector.GetTexture(sector.floor);
				BehindSector.HitSector.SetTexture(sector.floor,TexMan.CheckForTexture("null",TexMan.Type_Any));
			}
      }

The issue I have is getting the floor to revert to it's previous texture once the player is no longer behind it.

Also if there's a way to make the lines in the sector transparent when the player stands behind them that'd be cool, but first I need to figure out the above issue.

[Kzer-Za]

Hi! If this problem isn't solved yet, I suggest this:

Code: Select all

textureid behindtexture;
Sector LastAffectedSector;
FLineTraceData BehindSector;
bool hit = LineTrace(90,9000,45,TRF_THRUBLOCK,0,0,0,data: BehindSector);

if (hit && LastAffectedSector && behindtexture && BehindSector.HitType != TRACE_HitFloor)
{
	LastAffectedSector.SetTexture(sector.floor, TexMan.GetGameTexture(behindtexture);
	behindtexture = null;
	LastAffectedSector = null;
}

if (hit && BehindSector.HitType == TRACE_HitFloor)
{
	if(BehindSector.HitSector.GetTexture(sector.floor) != TexMan.CheckForTexture("null",TexMan.Type_Any))
	{
		LastAffectedSector.SetTexture(sector.floor, TexMan.GetGameTexture(behindtexture);
		
		LastAffectedSector = BehindSector.HitSector;
		behindtexture = BehindSector.HitSector.GetTexture(sector.floor);
		BehindSector.HitSector.SetTexture(sector.floor, TexMan.CheckForTexture("null",TexMan.Type_Any));
	}
}

[Night Falls]

Thanks for the code! I've been trying it out, though GZDoom doesn't recognize the function GetGameTexture. I looked inside gzdoom.pk3 and couldn't find it (including with development builds), and barely anything came up on Google.
I'm currently looking for some way to work around it, but haven't had much luck so far.

[Kzer-Za]

Oh, I was looking for a suitable function by grepping the code and it seems that GetGameTexture came in the results from cpp code, not from zscript. Then I don't know a function that sets a texture by textureid, only by name, and it requires more steps. Add

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string behindtexturename;

to the section with variables.

And after you get behindtexture, do also

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behindtexturename = TexMan.GetName(behindtexture);

And instead of

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LastAffectedSector.SetTexture(sector.floor, TexMan.GetGameTexture(behindtexture);

do

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LastAffectedSector.SetTexture(sector.floor, TexMan.CheckForTexture(behindtexturename, TexMan.Type_Any));

[Night Falls]

Update: I found a workaround by replacing TexMan.GetGameTexture(behindtexture); with TexMan.CheckForTexture(Texman.Getname(behindtexture),TexMan.Type_Any));

I also had to put textureid behindtexture; and Sector LastAffectedSector; outside of the tick() area, which threw me off for a while but I figured it out

Edit: I didn't reload this page so I didn't see your comment, sorry

[Kzer-Za]

No prob, glad it's working now.