scripts/SS_IsHandleValid.gml

From spelunky.gmk, Spelunky Classic 1.1's source, © 2008, 2009 Derek Yu and Mossmouth, LLC, shown whole under the Spelunky User License v1.1b. Extracted by spelunky.ai's tools, an unofficial fan project, one file per script or event; the // ==== lines are the extractor's, naming each action of the event. Some scripts are others' work that Derek Yu credits in the source's readme.txt: Martin Piecyk's platform engine, ChevyRay's view scaling scripts and tsg1zzn's Super Sound System. This script is part of tsg1zzn's Super Sound System.

The script SS_IsHandleValid, 19 lines of GML.

//Check if the specified sound handle is a valid sound handle//This function is bulletproof and can be used with any value/*argument0: sound handle*//*return: true/false*/if is_real(argument0) then return -1;switch external_call(global.dll_SS_IsSoundPlaying,argument0) begin  case "1":   return 1;  case "0":    return 1;  case "-1": return 0;end;