objects/oLaser/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.
oLaser's step event, 10 lines of GML.
y += yVel;yVel += yAcc;if (yVel > 4) yVel = 0;/*if (collision_point(x, y, oDark, 0, 0) or collision_point(x, y, oDarkFall, 0, 0) or collision_point(x, y, oIce, 0, 0)){ instance_destroy();}*/