objects/oRope/step.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.
oRope's step event, 17 lines of GML.
if (collision_point(x+12, y, oLava, 0, 0) and burnTimer == 0){ instance_create(x+8, y, oRopeBurn);}if (burnTimer > 1) burnTimer -= 1;else if (burnTimer == 1){ if (oPlayer1.state == 14) { if (collision_point(x+12, y+4, oPlayer1, false, false)) { oPlayer1.state = 16; } } instance_destroy();}