Mega Man Utility Spawning Script

//This script assumes Mega Man's x and y origins are centered in the sprite editor
var x_check = objMegaman.x;
var y_check = objMegaman.y;
var dir = objMegaman.image_xscale;
var block_up = noone;
var block_over = noone;
var block_down = noone;
var depth_limit;
if (objMegaman.weapon == RushJet)
    depth_limit = objMegaman.y;
else
    depth_limit = (view_yview + view_hview);
var found_landing_point = false;
var utility = argument[0];

//Check up
for (var i = y_check ; i <= y_check - 32; i--;) {
    block_up = collision_rectangle(x_check - 4, i, x_check + 4, y_check, objSolid)) {
    if (instance_exists(block_up)) {
        y_check = (block_up.bbox_bottom + 1);
        break;
    }
}
if (!instance_exists(block_up))
    y_check -= 32;

//Check over
for (var i = x_check + (4 * -dir); i != x_check + (24 * dir); i += (1 * dir);) {
    if (dir > 0)
        block_over = collision_rectangle(x_check - 4, y_check, x_check + 4 + i, y_check + 8, objSolid);
    else
        block_over = collision_rectangle(x_check + 4 + i, y_check, x_check + 4, y_check + 8, objSolid);
    if (instance_exists(block_over)) {
        var box;
        if (dir > 0)
            box = (block_over.bbox_left - 1);
        else
            box = (block_over.bbox_right + 1);
        x_check = box;
        break;
    }
}
if (!instance_exists(block_over))
    x_check += (28 * dir);

//Check down
for (var i = y_check; i <= depth_limit; i++) {
    if (dir > 0)
        block_down = collision_rectangle(x_check - 8, y_check, x_check, i, objSolid);
    else
        block_down = collision_rectangle(x_check, y_check, x_check + 8, i, objSolid);
    if ((i >= depth_limit && global.weapon == Rush Jet) || (instance_exists(block_down))) {
        if (global.weapon != Rush Jet) {
            if (instance_exists(block_down))
                y_check = block_down.bbox_top;
        }
        else
            y_check = depth_limit;
        found_landing_point = true;
        break;
    }
}

if (found_landing_point) {
    instance_create(x_check, y_check, utility);
}