objects/oSmashTrap/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.

oSmashTrap's step event, 137 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 (status == IDLE){    dist = point_distance(x, y, oCharacter.x, oCharacter.y);    if (counter > 0) counter -= 1;            if (dist < 90 and counter < 1)    {        if (abs(oCharacter.y - (y+8)) < 8 and oCharacter.x > x+8 and not isCollisionRight(2))        {            status = ATTACK;            dir = RIGHT;            xa = 0.5;        }        else if (abs(oCharacter.x - (x+8)) < 8 and oCharacter.y > y+8 and not isCollisionBottom(2))        {            status = ATTACK;            dir = DOWN;            ya = 0.5;        }        else if (abs(oCharacter.y - (y+8)) < 8 and oCharacter.x < x+8 and not isCollisionLeft(2))        {            status = ATTACK;            dir = LEFT;            xa = -0.5;        }        else if (abs(oCharacter.x - (x+8)) < 8 and oCharacter.y < y+8 and not isCollisionTop(2))        {            status = ATTACK;            dir = UP;            ya = -0.5;        }    }}else if (status == ATTACK){    colLeft = false;    colRight = false;    colTop = false;    colBot = false;    if (isCollisionLeft(1)) colLeft = true;    if (isCollisionRight(1)) colRight = true;    if (isCollisionTop(1)) colTop = true;    if (isCollisionBottom(1)) colBot = true;    if (abs(xv) < 4) xv += xa;    if (abs(yv) < 4) yv += ya;    x += xv;    y += yv;    if (dir == RIGHT)    {        if (isCollisionRight(2) and colRight)        {            x -= 2;            hit = true;        }        if (colRight)        {            x -= 1;            hit = true;        }    }    else if (dir == DOWN)    {        if (isCollisionBottom(2) and colBot)        {            y -= 2;            hit = true;        }        if (colBot)        {            y -= 1;            hit = true;        }    }    else if (dir == LEFT)    {        if (isCollisionLeft(2) and colLeft)        {            x += 2;            hit = true;        }        if (colLeft)        {            x += 1;            hit = true;        }    }    else if (dir == UP)    {        if (isCollisionTop(2) and colTop)        {            y += 2;            hit = true;        }        if (colTop)        {            y += 1;            hit = true;        }    }        if (collision_rectangle(x-1,y-1,x+17,y+17,oTombLord,0,0)) hit = true;        if (hit)    {        xv = 0;        yv = 0;        xa = 0;        ya = 0;    }    if (hit and not colRight and        not colLeft and        not colTop and        not colBot)    {        status = IDLE;        hit = false;        counter = 50;    }}else if (status = 99){    xv = 0;    yv = 0;    xa = 0;    ya = 0;    y += 0.05;    if (collision_point(x, y-1, oLava, 0, 0)) instance_destroy();}if (collision_rectangle(x+1, y+1, x+15, y+15, oLava, 0, 0)){    status = 99;}}