View source for User:SirYodaJedi/Porting Quake DM maps to Deathmatch Classic

{{draft}}
This page covers some oddities about porting Quake I deathmatch maps to Deathmatch Classic. Maps can mostly ported directly with minimal edits, but there are some quirks to work out 

== Uncompiled map file ==
{{todo|Axial Projection → Valve220 (not strictly necessary, as hlcsg supports the former, but helps with edits)}}
* Players are taller in DMC than Quake. In Quake, players are 64qu tall, whereas in DMC, players are 72 units tall. While it ''is'' possible to use a [[hullfile]] to change the player size to that of Quake's, it is preferable to instead convert chop of a portion of the overhang and convert it to a [[func_group]] or [[func_detail (VHLT)|func_detail]] with zhlt_noclip.
* While compiled {{quake}} [[BSP29]] maps ''can'' be directly converted to {{goldsrc}} [[BSP30]] without recompiling (such as using [[ericw-tools]] BSPUtil or [[newbspguy]]), this is discouraged, as the aforementioned hull size differences may cause issues.

== Textures ==
{{todo|porting from WAD2 to WAD3; renaming tool textures}}
=== Liquids ===
Liquids should be renamed from <code>*</code> to <code>!</code>. Additionally, the palette will need to be regenerated, because of how Half-Life handles fog color.

Fog color can be taken from the tint color, and fog density can be taken from tint percentage. See [https://the303.org/tutorials/gold_texture_p6.htm The303's tutorial on how to configure water fog].

{| class="wikitable"
|-
! Liquid Type !! Color !! Intensity
|-
| Water || 130,80,50 || 128
|-
| Slime || 0,25,5 || 150
|-
| Lava || 255,80,0 || 150
|}
{{note|Teleporters use the same tint as regular water in Quake. It may make sense to use a weak black fog instead.}}

{{confirm|nocat=1|What color does QEX use for water tint? It uses a blue tint instead of brown.}}

=== Skies ===
{{todo|method using two additive scrolling func_illusionary entities (via rendercolor)}}

== Lighting ==
{{todo|
* light (+ _color) to _light
* model/sprite based lights (the flame models ''do'' exist, but they need to be played back at 1/3 speed)
}}

== Sounds ==
{{todo|simulating visleaf-based ambient sounds for water and sky
}}
=== Ambient sounds ===
The following entities (which don't exist in DMC) emit ambient sounds, which should be replicated with [[ambient_generic (GoldSrc)|ambient_generic]]. Remember to bundle the sounds with your map and use a [[Resource list (GoldSrc)|RES]] file!
{| class="wikitable"
|-
! Entity !! WAV file (relative to {{path|/id1/sound/}}) !! Volume
|-
| ambient_suck_wind || {{code|ambience/suck1.wav}} || 10
|-
| ambient_drone || {{code|ambience/drone6.wav}} || 5
|-
| ambient_fluoro_buzz || {{code|ambience/buzz1.wav}} || 10
|-
| ambient_drip || {{code|ambience/drip1.wav}} || 5
|-
| ambient_comp_hum || {{code|ambience/comp1.wav}} || 10
|-
| ambient_thunder || {{code|ambience/thunder1.wav}} || 5
|-
| ambient_light_buzz || {{code|ambience/fl_hum1.wav}} || 5
|-
| ambient_swamp1 || {{code|ambience/swamp1.wav}} || 5
|-
| ambient_swamp2 || {{code|ambience/swamp2.wav}} || 5
|-
| FireAmbient || {{code|ambience/fire1.wav}} || 5
|-
| light_fluoro || {{code|ambience/fl_hum1.wav}} || 5
|-
| light_fluorospark || {{code|ambience/buzz1.wav}} || 5
|-
| light_torch_small_walltorch || {{code|ambience/fire1.wav}} || 5
|-
| light_flame_large_yellow || {{code|ambience/fire1.wav}} || 5
|-
| light_flame_small_yellow || {{code|ambience/fire1.wav}} || 5
|-
| light_flame_small_white || {{code|ambience/fire1.wav}} || 5
|-
|}

== Other entities ==
* <code>info_notnull</code> - [[info_target (GoldSrc)|info_target]]. Note that the GoldSrc counterpart is much less versatile than Quake (being just a point that entities can target), as the move away from [[QuakeC]] means "maphacks" don't work in GoldSrc.
* <code>misc_explobox</code> or <code>misc_explobox2</code> - using the [https://web.archive.org/web/20211124081344/https://static1.squarespace.com/static/566d855a841abafcc8ed19c4/t/56c0852e0442623c14e375b9/1455457587965/quake_map_source.zip source MAPs] for b_explob or b_exbox2 (respectively), create a [[func_breakable (GoldSrc)|func_breakable]] with health of 20 and an explosion magnitude of 160.
* <code>func_dm_only</code> - [[trigger_teleport (GoldSrc)|trigger_teleport]] (doesn't actually exist, but this is what it allegedly would be)
* <code>func_bossgate</code> - [[func_wall (GoldSrc)|func_wall]] (disappears when all episodes are complete, which in deathmatch is never)
* <code>func_illusionary</code> - [[func_detail (GoldSrc)|func_detail]], with at least one face of each brush textured with CONTENTEMPTY (split brushes if necessary. Func_illusionary in Quake doesn't count as an edict after initially being spawned, but this behavior was removed in GoldSrc because they couldn't get it to work with the revamped save system.)
* <code>trigger_secret</code> - [[trigger_once (GoldSrc)|trigger_once]]

=== Entities to remove outright ===
If any entities have the "not in deathmatch" spawnflag set, then they can be removed.
* <code>monster_*</code> - [[monster]]s don't appear in deathmatch
* <code>func_episodegate</code> - appears when an episode is complete, which in deathmatch is never
* <code>trigger_onlyregistered</code> - Shows a message if pop.lmp fails to validate (unregistered). This feature doesn't exist in GoldSrc.
* <code>item_key*</code> - DMC removes support for keys. You could use an [[item_security (GoldSrc)|item_security]] targeting the door, but it's probably better to just leave the door unlocked (iirc, this is what Q1 does in DM mode anyway)

=== Worldspawn Keyvalues ===
{{kv|intn=_sky, sky, _qlsky, qlsky|Sky name|sky|Change to {{code|skyname}}.}}
{{kv|intn=_fog, fog|Fog|float+color1|First value is intensity percentage, rest is [[color1]]. This can be done using {{ent|env_fog}} (multiply the color values by 255), although I'm not sure how to convert the intensity to distance mathematically instead of by eyeballing.}}
{{kv|intn=_wateralpha, wateralpha|Water alpha translucency|normal}}
{{kv|intn=_slimealpha, slimealpha|Slime alpha translucency|normal}}
{{kv|intn=_lavaalpha, lavaalpha|Lava alpha translucency|normal|Convert the according liquids to [[func_water (GoldSrc)|func_water]], set contents accordingly, set {{code|rendermode}} to 2, and multiply this KV's value by 255 and set {{code|renderamt}} to the integer-rounded result.}}
{{kv|intn=_telealpha, telealpha|Teleporter alpha translucency|normal|This is like the other liquids, but is a bit trickier due to GoldSrc only rendering the top of liquid brushes (which usually isn't a problem for other liquids). This can be hacked using a non-solid starting-off func_rotating with the {{code|angles}} KV.}}

=== Generic Keyvalues ===
{{kv|intn=alpha|Alpha translucency|normal|Set {{code|rendermode}} to 2, then multiply this KV's value by 255 and set {{code|renderamt}} to the integer-rounded result.}}
{{kv|intn=mangle|"Mangle"|vec3|Change to {{code|angles}}, swapping the first and second values.}}