objects/oRopeThrow/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.

oRopeThrow's step event, 36 lines of GML.

// ==== action 0: lib 1 id 604: action_inherited() ====// ==== action 1: lib 1 id 603: code ====if (armed and yVel >= 0){    move_snap(16, 1);    if (px < x)    {        if (not collision_point(x-8, y, oSolid, 0, 0)) x -= 8;        else x += 8;    }    else    {        if (not collision_point(x+8, y, oSolid, 0, 0)) x += 8;        else x -= 8;    }    instance_create(x, y, oRopeTop);    armed = false;    falling = true;    xVel = 0;    yVel = 0;}if (falling){    xVel = 0;    yVel = 0;    y += 8;    fallCount += 1;    if (isCollisionBottom(1) or fallCount > 16)    {        falling = false;        y -= 8;        instance_destroy();    }    else instance_create(x-8, y, oRope);}