The "How do I..." Thread

[DoomKrakken]

Look like cuboid.

Screenshot_Doom_20171005_220239.jpg

But generic 3d graph creator say that must be a sphere.

wild sphere.png

Flattened because I dont setup z scale.

What if you applied this stuff to the velocity parameters?

Code: Select all

TNT1 A 0 A_SpawnItemEx("cover_cloud", 0, 0, 0, random(14, 22) * sin(random(0, 180)) * cos(frandom(0,359.99)), random(14,22) * sin(random(0,180)) * sin(frandom(0, 359.99)), random(14, 22) * cos(random(0, 180)), 0, SXF_NOCHECKPOSITION) 

It won't start off expanded, but it'd probably expand into a sphere, right? It'd also make for a more realistic explosion...

[kodi]

Either of you might be interested in this particle implosion effect for education purposes of nothing else:

Code: Select all

for(int i=0;i<=100;i++)
				{
				double prtc_ang = frandom(0.0,360.0);
				double prtc_pit = frandom(-90.0,90.0);
				double prtc_dist = frandom (64.0,128.0);
				double prtc_speed = -8.0;
				double cosang = cos(prtc_ang);
				double sinang = sin(prtc_ang);
				
				double cospit = cos(prtc_pit);
				double sinpit = sin(prtc_pit);
				int prtc_tics = prtc_dist/abs(prtc_speed);
				string prtcolor;
				switch(random(1, 3))
				{
				case 1:
				prtcolor = "77 99 FF";
				break;

				case 2:
				prtcolor = "FF FF FF";
				break;

				case 3:
				prtcolor = "22 22 FF";
				break;
				}
				
				a_spawnparticle(prtcolor,
								SPF_FULLBRIGHT,
								prtc_tics,
								5.0,
								0,
								cospit*(cosang*prtc_dist),
								cospit*(sinang*prtc_dist),
								sinpit*prtc_dist,
								cospit*(cosang*prtc_speed),
								cospit*(sinang*prtc_speed),
								sinpit*prtc_speed);
				}
			}

It spawns a cloud of particles that converge on the same spot and disappear at the same time.

[Apeirogon]

Look like cuboid.

The attachment Screenshot_Doom_20171005_220239.jpg is no longer available

But generic 3d graph creator say that must be a sphere.

The attachment wild sphere.png is no longer available

Flattened because I dont setup z scale.

What if you applied this stuff to the velocity parameters?

Code: Select all

TNT1 A 0 A_SpawnItemEx("cover_cloud", 0, 0, 0, random(14, 22) * sin(random(0, 180)) * cos(frandom(0,359.99)), random(14,22) * sin(random(0,180)) * sin(frandom(0, 359.99)), random(14, 22) * cos(random(0, 180)), 0, SXF_NOCHECKPOSITION) 

It won't start off expanded, but it'd probably expand into a sphere, right? It'd also make for a more realistic explosion...

Aaaaaand...no, just like i think.

But i managed to do this

with

Code: Select all

tnt1 a 1 A_CustomMissile("transfer", 32, 0, frandom(0, 359.99), CMF_AIMDIRECTION, frandom(-90, 90))

actor transfer
{speed 1
states{
spawn;
tnt1 a 0 nodelay a_setspeed(random(14. 22))
tnt1 a 1
death:
tnt1 a 0 a_spawnitemex("cover_cloud")

And even now this still dont perfectly spherical.

Why live if gzdoom can not spawn object in spherical layer? Life is pain...
Also, it bag or feature, that gzdoom cant correct multiply sine and cosine?!

[Apeirogon]

Either of you might be interested in this particle implosion effect for education purposes of nothing else:

Code: Select all

for(int i=0;i<=100;i++)
				{
				double prtc_ang = frandom(0.0,360.0);
				double prtc_pit = frandom(-90.0,90.0);
				double prtc_dist = frandom (64.0,128.0);
				double prtc_speed = -8.0;
				double cosang = cos(prtc_ang);
				double sinang = sin(prtc_ang);
				
				double cospit = cos(prtc_pit);
				double sinpit = sin(prtc_pit);
				int prtc_tics = prtc_dist/abs(prtc_speed);
				string prtcolor;
				switch(random(1, 3))
				{
				case 1:
				prtcolor = "77 99 FF";
				break;

				case 2:
				prtcolor = "FF FF FF";
				break;

				case 3:
				prtcolor = "22 22 FF";
				break;
				}
				
				a_spawnparticle(prtcolor,
								SPF_FULLBRIGHT,
								prtc_tics,
								5.0,
								0,
								cospit*(cosang*prtc_dist),
								cospit*(sinang*prtc_dist),
								sinpit*prtc_dist,
								cospit*(cosang*prtc_speed),
								cospit*(sinang*prtc_speed),
								sinpit*prtc_speed);
				}
			}

It spawns a cloud of particles that converge on the same spot and disappear at the same time.

This acs or decorate? I ask because a_spawnparticle function and switch/case block.

[kodi]

Zscript. Like this:

TNT1 A 0
{
(that code block)
}

Might work in decorate as well; I'm not sure.

[DoomKrakken]

@Apeirogon Dude, that's a lot closer!

Why does the cloud need to be perfectly spherical, though? I know of no explosions (except those in outer space) that are perfectly spherical.

[Apeirogon]

@Apeirogon Dude, that's a lot closer!

Why does the cloud need to be perfectly spherical, though? I know of no explosions (except those in outer space) that are perfectly spherical.

You will see it at cacodemon replacer when, really when?, i finish my monster mod. I dont want to shown half of work.

[Ryuhi]

I'm currently making an item that "cheats death" by sending a player to the beginning of the map rather than kill them, similar to how BJ's unique works in Samsara. so far so good, but my main problem is that any damage that puts a player into negative will cause it to fail. My main ideas for a solution are to make damage essentially change by tic rather than all at once (think Earthbound damage,) or to find a way to force it to activate before the player dies. Does anyone know how I would go about doing either?

here's the script as I have it so far:

Code: Select all

Script "Revival" ENTER
{
  If (CheckInventory("BrutalArtiSuperHealth") && GetActorProperty(0,APROP_HEALTH) < 5) //Activates at 5 or less health
  {
    GiveInventory("Telemini", 1);  //teleports player to start
    GiveInventory("Health", 999);
    TakeInventory("BrutalArtiSuperHealth", 1);  //item used to give effect
    Delay(1);
    restart;
  }
  Else
  {
    Delay(1);
    restart;
  }
}

[Blue Shadow]

I don't know if this would work for you or not. But make it so that as long as that item in the inventory, [wiki=SetPlayerProperty]the player would be in buddha mode[/wiki]. In that mode, the player's health cannot go below 1 hit point, meaning they cannot be killed.

[Ryuhi]

thats actually a good idea. I can probably adapt that to work, I'll give it a try.

worked like a charm:

Code: Select all

Script "GodlikeCheck" ENTER
{
  If (CheckInventory("BrutalArtiSuperHealth"))
  {
	SetPlayerProperty(0,1,PROP_BUDDHA);
	Delay(35);
	Restart;
  }
  If (!CheckInventory("BrutalArtiSuperHealth"))
  {
	SetPlayerProperty(0,0,PROP_BUDDHA);
	Delay(35);
	Restart;
  }
}

[Apeirogon]

ArtiTeleport

[KeksDose]

@Apeirogon:
Your sphere coordinates idea is correct, but you're calling random 5 times and of course, each time it probably has another result. So all that happens is you accidentally mismatch your sin and cos inputs, resulting in the cuboid.

You can store the angle and inclination in variables and use those:

Code: Select all

float ang    = Frandom(0, 360);
float vang   = Frandom(0, 360);
float radius = Frandom(14, 22);

A_SpawnItemEx(
    "CoverCloud", 0, 0, 0,
    cos(ang) * cos(vang) * radius,
    sin(ang) * cos(vang) * radius,
    sin(vang) * radius, 0, SXF_NOCHECKPOSITION); 

edit: moved to velocities instead of pos as was the intention

[Apeirogon]

float ang = Frandom(0, 360);
must be
float ang = Frandom(0, 180);
just because

Anyway, Houston, we have a problem.

Here screen when i left all argument in velociti

and here when insert all into positions.

Yes, i try conjure with radius variable, but what with frandom(0, 0.1) waht with frandom(100000, 5000000), i dont see any difference.

Updated my journal: go away, there's nothing to look at I found error by myself

[BigProjectAlone]

I know there is a way to do it but i cannot find how.. is someone can tell me how to change that menu selector please ?

[kodi]

@bigprojectalone
It's in the CONFONT iirc