objects/oPDummy3/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.
oPDummy3's step event, 38 lines of GML.
y += yVel;if (status == TRANSITION){ if (x >= 904) { sprite_index = sDuckLeft; status = 1; } else x += 2;}else if (status == ROPEDROP){ alarm[0] = 20; status += 1;}else if (status == 3){ sprite_index = sRunLeft; if (x >= 920) { sprite_index = sClimbUp3; status = 4; } else x += 2;}else if (status == 4){ if (y >= 256) { oIntro.fadeOut = true; } else { y += 2; } if (alarm[2] < 1) alarm[2] = 8;}