Texture based puffs and decals?

[::Bloodfury::]

Hi!

So I began to wonder is there a way to achieve texture dependent puffs and particles from attacks hitting
walls. Maybe even ceilings / floors.

To get the idea. If you have say, a sword and you hit a stone textured wall it leaves a decal and also spawns
puff with sparks. But if you would be hitting with that same sword on a wood textured wall it would then
naturally leave a different looking decal and splinters of wood would fly around.

Also the impact sound would be different depending on the surface you are hitting. Stone emits a metallic
clank and wood would naturally have a choppy or thudding sound.

Tried to browse through wiki to find some solution via decaldefs, actor properties and states and such.
But couldn't figure anything out. I do know how to make custom decals, puffs and impact sounds with
weapons etc. But need help to figure out how you could have a surface dependent variables.

Thx in advance from any help or tips.

[Caligari87]

With ZScript this is now possible. You can have your puffs (or your weapon) do a Linetrace to get the impact texture and spawn the appropriate effects. Although keep in mind it would only be checking the texture name so if a mod changed the same texture to something else it may not match.

[::Bloodfury::]

Well I'm working on a full TC game. So it is not even intended to use mods on top of it. So that shouldn't be an issue. but good to know that a texture mod could cause issues.
Well.. I'll need to get into Zscript then. I thank thee very much!

[kodi]

I've worked on something like this that I haven't finished yet.

Code: Select all

enum ImpactTypeIDs
{
	GTT_METAL = 1, //done
	GTT_ROCK_BROWN = 2, //done
	GTT_ROCK_GREY = 3, //done
	GTT_LAMP = 4, 
	GTT_GRASS = 5, //sound
	GTT_MARBLE_GREEN = 6,  ///use gray?
	GTT_CERAMIC = 7,
	GTT_PLASTIC = 8,
	GTT_DIRT = 9, //sound
	GTT_GRAVEL_BROWN = 10, 
	GTT_GRAVEL_GREY = 11, //sound
	GTT_SYNTHETIC_BROWN = 12, //sound
	GTT_SYNTHETIC_BLUE = 13, 
	GTT_FLESH = 14,
	GTT_BLOOD = 15,
	GTT_WATER = 16, //done
	GTT_SLIME = 17,
	GTT_LAVA = 18,
	GTT_SYNTHETIC_RED = 19,
	GTT_SYNTHETIC_GREY = 20,
	GTT_FABRIC_TAN = 21,
	GTT_WOOD = 22,
	GTT_ELECTRONIC = 23,
	GTT_GLASS_ARMORED = 24,
	GTT_TELEPORT = 25,
	GTT_NUKAGE = 26,
	GTT_CARTON = 27, //note: make it random grey/tan
	GTT_FIREBLU = 28,//jeez...
	GTT_FIRE = 29,
	GTT_ROCK_RED = 30,
	GTT_DRYWALL = 31
};

Came up with those types after going through all doom 2 textures. May still condense them further. An issue is that what's a nice carpet in one map may be hellish flesh-growth in another

Edit: video link

[::Bloodfury::]

Yes that is exactly what I am after too!

[::Bloodfury::]

Extremely nice work on those linetrace puffs.

I was wondering, since I am a total beginner with Zscript. Would it be
too much to ask if you could send an example file how you have achieved this.
Just a simple preview (without revealing too much from your own project) for me
to learn and to code my own similiar system. A tutorial of sorts. ;D

You will be appropriately credited in my project obviously.

[kodi]

I can post a brief outline - the code isn't good enough even for copy-portions of it
Not sure how to best retrieve the floor/wall/ceiling when not using Linetrace, but with it you do something like

Code: Select all

FLineTraceData TraceData;
self.LineTrace(self.angle,SomeValue,self.pitch,TRF_THRUHITSCAN,0,0,0.0,TraceData);
if(TraceData.HitType != TraceData.TRACE_HitActor)
{
	name hit_texture_name = TexMan.GetName(TraceData.HitTexture);
	int textype = GetTextureType(hit_texture_name);
	DoTextureEffect(textype);
}

Where "GetTextureType" is a function you'll have to make yourself. There you compare the input, a Name variable, with texture lump names like 'FIREBLU1' in single quotes. Presumably in some kind of array. It should return an effect/material type id number. Then you either call another custom function that does various things depending on the effect type, or you jump states or something instead.

[::Bloodfury::]

Thank you very much sir. This is a good starting point.

[ADoomedSpaceMarine]

I can post a brief outline - the code isn't good enough even for copy-portions of it
Not sure how to best retrieve the floor/wall/ceiling when not using Linetrace, but with it you do something like

Code: Select all

FLineTraceData TraceData;
self.LineTrace(self.angle,SomeValue,self.pitch,TRF_THRUHITSCAN,0,0,0.0,TraceData);
if(TraceData.HitType != TraceData.TRACE_HitActor)
{
	name hit_texture_name = TexMan.GetName(TraceData.HitTexture);
	int textype = GetTextureType(hit_texture_name);
	DoTextureEffect(textype);
}

Where "GetTextureType" is a function you'll have to make yourself. There you compare the input, a Name variable, with texture lump names like 'FIREBLU1' in single quotes. Presumably in some kind of array. It should return an effect/material type id number. Then you either call another custom function that does various things depending on the effect type, or you jump states or something instead.

So, I am going through my C++ sequence in my software engineering degree. Because ZScript behaves so much like C++ this is honestly makes sense and is something I have the knowledge to pull off. Definitely using an array would be easiest, one that once a function sorts through it returns an integer value to a puff/decal spawner function based on the number returned. For acquiring the results more efficiently, perhaps a bubble sort algorithm or at least a binary search where will work twice as fast may be beneficial for performance, especially if the user is firing a lot of rounds.

I was actually thinking about how to implement such a thing in my mod I'm working from the ground up, and was going to attempt texture-based bullet decals and puff. This gives me a really good ground to start on, and an idea of what to do to solve the problem I was presented with how to execute such a thing.