Question - Code Code Error

[GriffinTGA]

Hello! So I have recently started working on GameMaker Studio 2, and I was following HeartBeast's tutorial on grabbing onto ledges, and I came across an error that wouldn't let me start the game. The error said this:

Script: scr_move_state at line 68 : unknown function or script position

So here is the scr_move_state code.

///scr_move_state

var rkey = keyboard_check(vk_right);
var lkey = keyboard_check(vk_left);
var jkey = keyboard_check(vk_up);

// Check for ground
if (place_meeting(x, y+1, obj_platform)) {
vspd = 0;

// Jumping
if (jkey) {
vspd = -jspd;
}
} else {
// Gravity
if (vspd < 10) {
vspd += grav;
}
}

// Moving right
if (rkey) {
hspd = spd;
}

// Moving left
if (lkey) {
hspd = -spd;
}

// Check for not moving
if ((!rkey && !lkey) || (rkey && lkey)) {
hspd = 0;
}

var moving_right = sign(hspd);

// Horizontal collisions
if (place_meeting(x+hspd, y, obj_platform)) {
while (!place_meeting(x+sign(hspd), y, obj_platform)) {
x+= sign(hspd);
}
hspd = 0;
}

// Move horizontally
x+= hspd;

// Vertical collisions
if (place_meeting(x, y+vspd, obj_platform)) {
while (!place_meeting(x, y+sign(vspd), obj_platform)) {
y+= sign(vspd);
}
vspd = 0;
}

// Move vertically
y += vspd;

// Collisions end
var was_free = !position(x+(16*moving_right), yprevious, obj_platform);
var is_not_free = position_meeting(x+(!16*moving_right), y, obj_platform);
var moving_down = yprevious < y;

if (was_free && is_not_free && moving_down) {
hspd = 0;
vspd = 0;
state = scr_ledge_grab_state;
}

// Control the sprites
if (yprevious != y) {
sprite_index = spr_jump;
image_speed = 0;
image_index = y>yprevious;
} else {
if (xprevious != x) {
sprite_index = spr_walk;
image_speed = 1;
} else {
sprite_index = spr_stand;
}
}

// Control the direction of the player facing
if (xprevious < x) {
image_xscale = 1;
} else if (xprevious > x) {
image_xscale = -1;
}

And here is the scr_ledge_grab_state:

///scr_ledge_grab_state()
var jkey = keyboard_check_pressed(vk_up);
var dkey = keyboard_check(vk_down);

if (jkey) {
vspd = -jspd;
state = scr_move_state;
}

if (dkey) {
state = scr_move_state;
}

Can any of you help me fix it?

 

[gnysek]

You have directly wrote what's wrong in above error.

On line 68, there's a function position used which is unknown for game.

var was_free = !position(x+(16*moving_right), yprevious, obj_platform);

Probably there should be position_meeting here, looking for other lines of code.

However, this topic should be in this forum - https://forum.yoyogames.com/index.php?forums/programming.13/ - as it's not a GMS2 bug, but your bug in code. Please don't copy and paste doesn't even looking into content, as this is very bad, and you never learn anything.

P.S. there's [ code ] tag on forums, so you can use it to format code a little

 

[GriffinTGA]

Thank you so much! It's working now!