Spawning Question

[Hopelessness]

There was a time that I knew this but I no longer remember...

How do I spawn an enemy without creating a dummy sector? I use ZDoom and I recall it dealt with composing a script, but I don't remember what the script looked like or what the numbers were that corresponded to the particular enemy you wanted to spawn. If someone could explain this or simply provide a link to a tutorial it would be most appreciated.

Thank you.

[Ichor]

Here's a couple of them. There's some more, but I can't remember right now:

Thing_Spawn(mapspot tid, thing type, angle); Basic spawning command
Thing_SpawnNoFog(mapspot tid, thing type, angle); Spawns things (not just enemies) without the teleport effect or sound. They just appear suddenly and silently.

Oh yeah, the list of all the things that can be spawned:

0 T_NONE
1 T_SHOTGUY
2 T_CHAINGUY
3 T_BARON
4 T_ZOMBIE
5 T_IMP
6 T_ARACHNOTRON
7 T_SPIDERMASTERMIND
8 T_DEMON
9 T_SPECTRE
10 T_IMPFIREBALL
11 T_CLIP
12 T_SHELLS
19 T_CACODEMON
20 T_REVENANT
21 T_BRIDGE
22 T_ARMORBONUS
23 T_STIMPACK
24 T_MEDKIT
25 T_SOULSPHERE
27 T_SHOTGUN
28 T_CHAINGUN
29 T_ROCKETLAUNCHER
30 T_PLASMAGUN
31 T_BFG
32 T_CHAINSAW
33 T_SUPERSHOTGUN
51 T_PLASMABOLT
53 T_TRACER
68 T_GREENARMOR
69 T_BLUEARMOR
75 T_CELL
85 T_BLUEKEYCARD
86 T_REDKEYCARD
87 T_YELLOWKEYCARD
88 T_YELLOWSKULLKEY
89 T_REDSKULLKEY
90 T_BLUESKULLKEY
98 T_TEMPLARGEFLAME
100 T_STEALTHBARON
101 T_STEALTHKNIGHT
102 T_STEALTHZOMBIE
103 T_STEALTHSHOTGUY
110 T_LOSTSOUL
111 T_VILE
112 T_MANCUBUS
113 T_HELLKNIGHT
114 T_CYBERDEMON
115 T_PAINELEMENTAL
116 T_WOLFSS
117 T_STEALTHARACHNOTRON
118 T_STEALTHVILE
119 T_STEALTHCACODEMON
120 T_STEALTHCHAINGUY
121 T_STEALTHSERGEANT
122 T_STEALTHIMP
123 T_STEALTHMANCUBUS
124 T_STEALTHREVENANT
125 T_BARREL
126 T_MANCUBUSSHOT
127 T_ROCKET
128 T_BFGSHOT
129 T_ARACHNOTRONPLASMA
130 T_BLOOD
131 T_PUFF
132 T_MEGASPHERE
133 T_INVULNERABILITY
134 T_BERSERK
135 T_INVISIBILITY
136 T_IRONFEET
137 T_COMPUTERMAP
138 T_LIGHTAMP
139 T_AMMOBOX
140 T_ROCKETAMMO
141 T_ROCKETBOX
142 T_BATTERY
143 T_SHELLBOX
144 T_BACKPACK
145 T_GUTS
146 T_BLOODPOOL
147 T_BLOODPOOL1
148 T_BLOODPOOL2
149 T_FLAMINGBARREL
150 T_BRAINS

[Job]

Can you make it so that crossing a particular linedef spawns said item/thing? Also, could you explain an example for (mapspot tid, thing type, angle)?

[Ichor]

There's a few ways to make a trigger line in ZDoom or Hexen.

1. Give a line the Thing_Spawn trigger and set it to "player crosses". For example, Thing_Spawn(3, 1, 64) would spawn a shotgun guy at any mapspot with a tid of 3 and facing north (90° = 64)

2. Give a line the ACS_Execute trigger. An example would be: ACS_Execute(5, 0, 0, 0, 0). This would run script 5, which might be something like this:

script 5 (void)
{
    Thing_Spawn(3, 1, 64);
}

This is useful for running multiple commands simultaneously, and eliminates the need for multiple trigger lines bunched together like I've seen in some maps.

3. This one is the most complicated, but it gives you the most control. Give a line the LineSetIdentification trigger, and give it an arbitrary number like you would a mapspot or sector tag. Let's say...7. Right now, the line won't do anything, so we must define what trigger you want in the script. For instance:

script 3 open // this runs once the map starts
{
    SetLineSpecial(7, 80 /* ACS_Execute */, 5, 0, 0, 0, 0);
}

Like I said, it gives you the most control because you can change the properties of that line at any time. For instance, let's say you have a switch, and you want it to be a toggle light switch. This is fairly easy to do once you know how. First, we give a line the LineSetIdentification and use...let's say 8 this time (7 is being used by another line). Also, give it the setting "player uses" (I've lost track on how many times I forgot to do this, heheh).

script 3 open
{
    SetLineSpecial(7, 80 /* ACS_Execute */, 5, 0, 0, 0, 0);
    SetLineSpecial(8, 80 /* ACS_Execute */, 6, 0, 1, 0, 0);
}

Now we must write script 6.

script 6 (int arg0)
{
    if(arg0 == 1)
    {
        Light_Fade(13, 180, 40);
        SetLineSpecial(8, 80 /* ACS_Execute */, 6, 0, 2, 0, 0);
    }
    else if(arg0 == 2)
    {
        Light_Fade(13, 60, 40);
        SetLineSpecial(8, 80 /* ACS_Execute */, 6, 0, 1, 0, 0);
    }
}