- Added PlaySound and StopSound functions for ACS. They are mostly analogous to their DECORATE

counterparts except that (1) PlaySound requires you to specify a sound instead of defaulting
  to "weapons/pistol", and (2) StopSound defaults to CHAN_BODY instead of CHAN_VOICE.

SVN r4306 (trunk)

src/p_acs.cpp

@@ -4116,6 +4116,8 @@ enum EACSFunctions
 	ACSF_GetUserCVarString,
 	ACSF_SetUserCVarString,
 	ACSF_LineAttack,
+	ACSF_PlaySound,
+	ACSF_StopSound,
 
 	// ZDaemon
 	ACSF_GetTeamScore = 19620,	// (int team)
@@ -4884,6 +4886,62 @@ int DLevelScript::CallFunction(int argCount, int funcIndex, SDWORD *args)
 			}
 			break;
 
+		case ACSF_PlaySound:
+			// PlaySound(tid, "SoundName", channel, volume, looping, attenuation)
+			{
+				const char *lookup = FBehavior::StaticLookupString(args[1]);
+				if (lookup != NULL)
+				{
+					FActorIterator it(args[0]);
+					AActor *spot;
+
+					FSoundID sid(lookup);
+					int chan = argCount > 2 ? args[2] : CHAN_BODY;
+					float vol = argCount > 3 ? FIXED2FLOAT(args[3]) : 1.f;
+					INTBOOL looping = argCount > 4 ? args[4] : false;
+					float atten = argCount > 5 ? FIXED2FLOAT(args[5]) : ATTN_NORM;
+
+					if (args[0] == 0)
+					{
+						spot = activator;
+						goto doplaysound;
+					}
+					while ((spot = it.Next()) != NULL)
+					{
+doplaysound:			if (!looping)
+						{
+							S_Sound(spot, chan, sid, vol, atten);
+						}
+						else if (!S_IsActorPlayingSomething(spot, chan, sid))
+						{
+							S_Sound(spot, chan | CHAN_LOOP, sid, vol, atten);
+						}
+					}
+				}
+			}
+			break;
+
+		case ACSF_StopSound:
+			{
+				int chan = argCount > 1 ? args[1] : CHAN_BODY;
+
+				if (args[0] == 0)
+				{
+					S_StopSound(activator, chan);
+				}
+				else
+				{
+					FActorIterator it(args[0]);
+					AActor *spot;
+
+					while ((spot = it.Next()) != NULL)
+					{
+						S_StopSound(spot, chan);
+					}
+				}
+			}
+			break;
+
 		default:
 			break;
 	}