objects/oCaveBG/create.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.

oCaveBG's create event, 8 lines of GML.

if (true){    switch (rand(1,2))    {        case 1: { sprite_index = sCaveBG1; break; }        case 2: { sprite_index = sCaveBG2; break; }    }}