The "How do I..." Thread

[LostSkull]

You could just make a normal projectile using lost souls' sprites. Homing missile have special behavior, though, see [wiki]A_SeekerMissile[/wiki].
You also need the +SEEKERMISSILE flag on the projectile.

Cool, sounds easier than I thought it would be

[AlphaEnt]

Hi...

A friend told me something about "playerisbot" but i can't figure it out how it works yet...
The idea is to create a pickup for weapons, so if the player is human, it get's a semi-auto weapon, else, if the player is a bot, it gets an automated version of the gun...

I'm pretty sure you guys have an idea of What i'm talking about... =D

[Numnzel]

Someone knows how to rotate indefinitely a polyobject? (Like a turbine/fan) I'm using this acs code for now, but it seems so "lagy" and sometimes even freezes the game:

Code: Select all

Script 254 ENTER
{
   Polyobj_RotateLeft(1,8,360);
   Polyobj_RotateLeft(2,8,360);
   Polyobj_RotateLeft(3,8,360);
   Polyobj_RotateLeft(4,8,360);
   Delay(35*3);
   Restart;
}

Somebody know other form to do it?

[Gez]

[wiki]Polyobj_RotateLeft[/wiki]
[wiki]Polyobj_RotateRight[/wiki]
[wiki]Polyobj_OR_RotateLeft[/wiki]
[wiki]Polyobj_OR_RotateRight[/wiki]

If angle is 255, then the polyobject will rotate continuously and never stop.

[Numnzel]

[wiki]Polyobj_RotateLeft[/wiki]
[wiki]Polyobj_RotateRight[/wiki]
[wiki]Polyobj_OR_RotateLeft[/wiki]
[wiki]Polyobj_OR_RotateRight[/wiki]

If angle is 255, then the polyobject will rotate continuously and never stop.

So many thanks Gez.

[cocka]

the polyobject will rotate continuously and never stop.

It won't even stop when you use [wiki]Polyobj_Stop[/wiki], will it?

[Gez]

It should stop when told to. It shouldn't stop by itself.

[cocka]

It should stop when told to.

You are right. It should, but it doesn't happen that way.

Let's see this code:

Code: Select all

script 1 OPEN
{
  Polyobj_RotateRight(1, 8, 255);
  Polyobj_OR_Move(1, 10, 0, 200);
  polywait(1);
  print(s: "STOP!");
  Polyobj_Stop(1); // Does nothing. Why?
}

[Kappes Buur]

Code: Select all

script 10 (void)

{
    Polyobj_RotateRight(2, 48, 255);
    Polyobj_RotateLeft (1, 24, 255);
    delay (35*5);                     // let them rotate for 5 secs
    Polyobj_Stop(1);
    Polyobj_Stop(2);
}

They do stop.
Without a Sound Number though, they will rotate soundlessly.

[cocka]

By modifying the code, you'll get the following results:

Code: Select all

script 1 OPEN
{
  Polyobj_Move(1, 10, 0, 200);
  delay(70);
  print(s: "STOP!");
  Polyobj_Stop(1); // It works.
}

Now, this is the interesting part:

Code: Select all

script 1 OPEN
{
  Polyobj_Move(1, 10, 0, 200);
  Polyobj_OR_RotateRight(1, 8, 255);
  delay(70);
  print(s: "STOP!");
  Polyobj_Stop(1); // It works but it only stops the rotating, not the moving.
}

How can you make a poly follow a path while it is rotating and then make it stop rotating when it reaches the end of the path?

[cocka]

1. I don't have to define anything in SNDINFO and SNDSEQ because as always I'm editing for Hexen.

2. In your example there are two different polyobjects and they have nothing to do with complex movements.

[Henderick]

How do I let a jumping monster land correctly?

First I tried with A_CheckFloor, but it does not work on top of another actor or on bridges.
So I tried A_JumpIf(velz==0) next, but it also happens in mid-air sometimes, when a monster reaches the highest spot of its jump, just before falling down again.
So I don't know what else I could try now.
Can someone help me?

[Victor]

Ok so I'm trying to make a custom HUD. I want to the circle around the armor icon to change color when I pick up the corresponding armor. Here's what I mean:
When I pick up the green armor I want the armor indicator to look like this:

---

Screenshot_Doom_20131207_095517.png (9.06 KiB) Viewed 515 times

And when I pick up the blue armor I want it to look like this:

---

Screenshot_Doom_20131207_095755.png (8.81 KiB) Viewed 515 times

Here is the code that I have created:

---

statusbar fullscreen, forcescaled
{

//Health
DrawBar "HealthFu", "HealthEm", Health, horizontal, interpolate(1000), reverse, 5, 147;
DrawNumber 3, SmallFont, Red, Health, 39, 193;
DrawMugShot 1, 13,153;
//Armor
DrawImage armoricon, 80,180;
DrawBar "GreenAr", "ArmorEmp", Armor, vertical, interpolate(100), reverse, 60, 150;
DrawNumber 3, SmallFont, DarkGreen, Armor, alignment (center) ,80, 193;
InInventory BlueArmor
DrawBar "BlueAr", "ArmorEmp", Armor, vertical, interpolate(100), reverse, 60, 150;
InInventory BlueArmor
DrawNumber 3, SmallFont, Blue, Armor, alignment (center) ,80, 193;
//Ammo
Drawimage ammoicon1, 275,160;
DrawBar "AmmoFull", "AmmoEmpt", Ammo1, horizontal, interpolate(8), reverse, 253, 161;
DrawBar "AmmoFull", "AmmoEmpt", Ammo2, horizontal, interpolate(8), reverse, 244, 181;
DrawNumber 3, IndexFont, White, ammo1, alignment (center), 277,165;
}

I had tried tweaking the code, but it did not work.
Here's the actual .pk3 file of the HUD

---

HUD.pk3

(9.13 KiB) Downloaded 17 times

Any help from you guys would be appreciated. Thanks for reading.

[Stardust]

How do I fix this bug please ?
This is the Death state of my class :

---

Code: Select all

Death:
FRSM G 0
FRSM G 0 SetPlayerProperty(0, 0, 4)
FRSM G 0 A_NoBlocking
FRSM G 0 A_Stop
FRSM H 1 A_GiveToTarget("KilledMe",1)
FRSM H 18 ACS_ExecuteAlways(999,0,0)
FRSM G 0 SetPlayerProperty(0, 0, 4)
FRSM G 0 A_PlayerScream
TNT1 A 0 A_CustomMissile("DeathFX1",0,0,0,2,90)
TNT1 A 0 A_CustomMissile("DeathFX1",0,0,0,2,-90)
TNT1 A 0 A_CustomMissile("DeathFX1",0,0,90,2,45)
TNT1 A 0 A_CustomMissile("DeathFX1",0,0,-90,2,-45)
TNT1 A 0 A_CustomMissile("DeathFX1",0,0,90,2,0)
TNT1 A 0 A_CustomMissile("DeathFX1",0,0,-90,2,0)
TNT1 A 0 A_CustomMissile("DeathFX1",0,0,90,2,-45)
TNT1 A 0 A_CustomMissile("DeathFX1",0,0,-90,2,45)
TNT1 A 0 A_CustomMissile("DeathFX2",0,0,0,2,90)
TNT1 A 0 A_CustomMissile("DeathFX2",0,0,0,2,-90)
TNT1 A 0 A_CustomMissile("DeathFX2",0,0,90,2,45)
TNT1 A 0 A_CustomMissile("DeathFX2",0,0,-90,2,-45)
TNT1 A 0 A_CustomMissile("DeathFX2",0,0,90,2,0)
TNT1 A 0 A_CustomMissile("DeathFX2",0,0,-90,2,0)
TNT1 A 0 A_CustomMissile("DeathFX2",0,0,90,2,-45)
TNT1 A 0 A_CustomMissile("DeathFX2",0,0,-90,2,45)
PLAY Z 1 A_CheckPlayerDone
wait

When the player using this class dies, a non-solid, standing still frame from his skin is spawned and just stay here. It should, when the player dies, just fire the death blasts graphics (CustomMissile DeathFX2), and not spawn a non-solid copy of its user :/

[Sandro]

GZDoom Builder (and Doom Builder too) says all my hi-res textures are double defined.
I checked my WAD and found nothing. Could this be a TEXTURES lump issue ?
For example, here's one high-res texture I defined in the TEXTURES lump :

Code: Select all

Texture HDMECHA1, 256, 256
{
    XScale 2
    YScale 2
    Patch HDMECHA1, 0, 0
}

This is all I wrote about this texture, and I'm sure I didn't imported two of the same texture into my WAD.
I'm also sure I added it to Patch Names and to Texture.

How can I avoid this ?