objects/oExplosion/collision_oItem.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.
oExplosion's collision oItem event, 46 lines of GML.
if (other.type == "Arrow" or other.type == "Fish Bone" or other.type == "Jar" or other.type == "Skull"){ with other { instance_destroy(); }}else if (other.type == "Bomb"){ with other { sprite_index = sBombArmed; image_speed = 1; alarm[1] = rand(4,8); enemyID = 0; } if (other.y < y) other.yVel = -rand(2,4); if (other.x < x) other.xVel = -rand(2,4); else other.xVel = rand(2,4);}else if (other.type == "Rope"){ if (not other.falling) { if (other.y < y) other.yVel -= 6; else other.yVel += 6; if (x > other.x) other.xVel -= rand(4,6); else other.xVel += rand(4,6); }}else{ if (other.y < y) other.yVel -= 6; else other.yVel += 6; if (x > other.x) other.xVel -= rand(4,6); else other.xVel += rand(4,6);}if (other.held){ with oPlayer1 { holdItem = 0; pickupItemType = ""; } other.held = false;}