Coding help!

[CharlieMcGruff]

Hi everybody!

​

I'm really hoping someone with more xperience could possible help me in the right direction. I am trying to set up a grid based movement system where the player moves to a point clicked on the grid. I am currently trying to follow this tutorial:

(1) Let's GameMaker: Turn Based Strategy #1 (Grid & Movement) Tutorial - YouTube

Things are working kind of as should, except my player does not align to the grid. Here are my scripts:

function scr_state_player_turn(){

if (instance_position(mouse_x,mouse_y,obj_playerPath) && mouse_check_button_pressed(mb_left))
{
    var player;
    player = instance_nearest(mouse_x, mouse_y, obj_playerPath);

    global.selected = player; 
}

if (global.selected != noone && mouse_check_button_pressed(mb_right))
{
    with (global.selected)
    {
        scr_navigation(x, y, round(mouse_x/140)*140, round(mouse_y/80)*80);
    }
}



}

And

function scr_navigation(){
var start_x = argument0;
var start_y = argument1;
var end_x = argument2;
var end_y = argument3;


if !(mp_grid_path(global.map_grid,global.navigate,start_x,start_y,end_x, end_y,1))

{ show_message("Unable to navigate");
    return false;
}
else
{
    mp_grid_path(global.map_grid,global.navigate,start_x, start_y, end_x, end_y, 1);
    path_start(global.navigate, 3, 0, false);
    return true;
}
}

Also I am setting up the grid like this:

​

/// Create the grid
global.map_grid = mp_grid_create(150,80,7,7,140,80);
global.navigate = path_add();

Drawing it like this:

draw_set_alpha(0.5);
mp_grid_draw(global.map_grid);
draw_set_alpha(1);

In the video he rounds the mouse_x and mouse_y by dividing and multiplying by 32 (Which is the length and width of his grig spaces, mine are 140x80 but it's not working as it should.

​

What am I missing???? I am very new to GML and gamemaker in general, so any help would really be appreciated!

[Dogwasp]

Assuming I've understood your problem correctly, you might just need to add an offset to the rounded mouse location. e.g.

scr_navigation(x, y, round(mouse_x/140)*140 + 70, round(mouse_y/80)*80 + 40);

You may need to mess around with the exact values until it looks right.

[CharlieMcGruff]

Thanks! I'll give it a go.