objects/oLeavesTile/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.
oLeavesTile's step event, 10 lines of GML.
/*if (x > view_xview[0]-16 and x < view_xview[0] + view_wview[0]+16 and y > view_yview[0]-16 and y < view_yview[0] + view_hview[0]+16){if (not collision_point(x-16, y, oTreeTile, 0, 0) and not collision_point(x+16, y, oTreeTile, 0, 0)){ instance_destroy();}}*/