if(random(50)<1 && dir<1) dir+=1;
if(random(50)<1 && dir>-1) dir-=1;
if(place_meeting(x+movspeed*dir,y,obj_wall)) dir=0;
x+=movspeed*dir;
if(dir!=0) image_xscale=dir;
gravity=(!place_meeting(x,y+1,obj_wall))*grav;
if(dir==0) {
    if(gravity==0) {
        sprite_index=spr_enemy1_stand;
    } else {
        sprite_index=spr_enemy1_still;
    }
} else {
    if(gravity==0) {
        sprite_index=spr_enemy1_walk;
    } else {
        sprite_index=spr_enemy1_moving;
    }
}
if(vspeed>10) vspeed=10;
if(collision_rectangle(x+dir*16,y+16,x+dir*movspeed*20,y-maxjump,obj_wall,true,true)>0 && gravity==0) {
    if(random(4)<1&&!place_meeting(x,y-24,obj_wall) && dir!=0) {
        
        ok=0;
        vx=x;
        vy=y;
        x-=999999;
        y-=999999;
        with(obj_wall) {
            if(collision_rectangle(other.vx+other.dir*16,other.vy+16,other.vx+other.dir*other.movspeed*20,other
.vy-other.maxjump,id,true,false)) {
                if(!place_meeting(x-(other.vx<x)+(other.vx>=x),y-1,obj_wall) && collision_line(x,y,other.vx,other.vy,obj_wall,true,true)<0) {
                    other.ok=other.vy-y+16;
                }
            }
        }
        x=vx;
        y=vy;
        if(ok>0) vspeed=-floor(sqrt(2*(ok+64/grav)))*(grav);;
    }
}