objects/oEnemy/draw.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.
oEnemy's draw event, 2 lines of GML.
if (facing == RIGHT) draw_sprite_ext(sprite_index, image_index, x+16, y, -1, image_yscale, image_angle, image_blend, image_alpha);else draw_sprite_ext(sprite_index, image_index, x, y, 1, image_yscale, image_angle, image_blend, image_alpha);