From ef926d31045a9d57aa78272c57bcca2ade16dab8 Mon Sep 17 00:00:00 2001 From: echon Date: Sun, 6 Sep 2009 17:31:47 +0000 Subject: [PATCH 1/1] Added an unreal-esque feature: snd_spatialization_occlusion, which when enabled uses a quick TraceLineOfSight to determine if a sound isn't "visibile" (blocked by world), and halves the volume. git-svn-id: svn://svn.icculus.org/twilight/trunk/darkplaces@9168 d7cf8633-e32d-0410-b094-e92efae38249 --- snd_main.c | 13 +++++++++++++ 1 file changed, 13 insertions(+) diff --git a/snd_main.c b/snd_main.c index 0bd242cc..236bb5e0 100644 --- a/snd_main.c +++ b/snd_main.c @@ -166,6 +166,7 @@ cvar_t snd_spatialization_min = {CVAR_SAVE, "snd_spatialization_min", "0.70", "m cvar_t snd_spatialization_max = {CVAR_SAVE, "snd_spatialization_max", "0.95", "maximum spatialization of sounds"}; cvar_t snd_spatialization_power = {CVAR_SAVE, "snd_spatialization_power", "0", "exponent of the spatialization falloff curve (0: logarithmic)"}; cvar_t snd_spatialization_control = {CVAR_SAVE, "snd_spatialization_control", "0", "enable spatialization control (headphone friendly mode)"}; +cvar_t snd_spatialization_occlusion = {CVAR_SAVE, "snd_spatialization_occlusion", "1", "enable occlusion testing on spatialized sounds, which simply quiets sounds that are blocked by the world"}; // Cvars declared in snd_main.h (shared with other snd_*.c files) cvar_t _snd_mixahead = {CVAR_SAVE, "_snd_mixahead", "0.11", "how much sound to mix ahead of time"}; @@ -809,6 +810,7 @@ void S_Init(void) Cvar_RegisterVariable(&snd_spatialization_max); Cvar_RegisterVariable(&snd_spatialization_power); Cvar_RegisterVariable(&snd_spatialization_control); + Cvar_RegisterVariable(&snd_spatialization_occlusion); Cvar_RegisterVariable(&snd_speed); Cvar_RegisterVariable(&snd_width); @@ -1370,6 +1372,17 @@ void SND_Spatialize(channel_t *ch, qboolean isstatic) } vol = intensity * max(0, source_vec[0] * snd_speakerlayout.listeners[i].dotscale + snd_speakerlayout.listeners[i].dotbias); + + if (snd_spatialization_occlusion.integer) + { + if (cl.worldmodel + && cl.worldmodel->brush.TraceLineOfSight + && !cl.worldmodel->brush.TraceLineOfSight(cl.worldmodel, listener_origin, source_vec)) + { + vol *= 0.5f; + } + } + ch->listener_volume[i] = (int)bound(0, vol, 255); } } -- 2.39.2