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[Theforeshadower]

Theforeshadower

8 Directional Movement GM 7 GML

Just looking for feedback:

Code: [Select]

// Movement - 8 directional

if movable = 1
{
    // Upwards 90 Degrees first
    if keyboard_check(vk_up) && !keyboard_check(vk_down) && !keyboard_check(vk_left) && !keyboard_check(vk_right)
    {
        speed = 2;
        sprite_index = cloudup;
        image_speed = .45;
        direction = 90;
    }
   
    // Upwards-Right 45 Degrees
    if keyboard_check(vk_up) && keyboard_check(vk_right) && !keyboard_check(vk_left) && !keyboard_check(vk_down)
    {
        speed = 2;
        sprite_index = cloudright;
        image_speed = .45;
        direction = 45;
    } 
   
    // Upwards-Left 135 Degrees
    if keyboard_check(vk_up) && keyboard_check(vk_left) && !keyboard_check(vk_down) && !keyboard_check(vk_right)
    {
        speed = 2;
        sprite_index = cloudleft;
        image_speed = .45;
        direction = 135;
    }
   
    // Right 0 Degrees
    if keyboard_check(vk_right) && !keyboard_check(vk_left) && !keyboard_check(vk_down) && !keyboard_check(vk_up)
    {
        speed= 2;
        sprite_index = cloudright;
        image_speed = .45;
        direction = 0;
    }
   
    // Left 180 Degrees
    if keyboard_check(vk_left) && !keyboard_check(vk_right) && !keyboard_check(vk_down) && !keyboard_check(vk_up)
    {
        speed= 2;
        sprite_index = cloudleft;
        image_speed = .45;
        direction = 180;
    }

    // Downwards 270 Degrees
    if keyboard_check(vk_down) && !keyboard_check(vk_up) && !keyboard_check(vk_left) && !keyboard_check(vk_right)
    {
        speed = 2;
        sprite_index = clouddown;
        image_speed = .45;
        direction = 270;
    }

    // Downwards-Left 225 Degrees
    if keyboard_check(vk_down) && keyboard_check(vk_left) && !keyboard_check(vk_up) && !keyboard_check(vk_right)
    {
        speed = 2;
        sprite_index = cloudleft;
        image_speed = .45;
        direction = 225;
    }
   
    // Downwards-Right 315 Degrees
    if keyboard_check(vk_down) && keyboard_check(vk_right) && !keyboard_check(vk_left) && !keyboard_check(vk_up)
    {
        speed = 2;
        sprite_index = cloudright;
        image_speed = .45;
        direction = 315;
    } 

}
No stopping implemented yet, but easy to do.

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[Downsider]

Downsider

Re: 8 Directional Movement GM 7 GML

Seems really redundant.  Can't you just add together the angles of each arrow key?

Hm.

[Mirby]

Mirby

Re: 8 Directional Movement GM 7 GML

I did a code like this for enemy characters for seemingly random movement.

Code: [Select]

if direction = 0
{sprite_index = E;}
if direction = 45
{sprite_index = NE;}
if direction = 90
{sprite_index = N;}
if direction = 135
{sprite_index = NW;}
if direction = 180
{sprite_index = W;}
if direction = 225
{sprite_index = SW;}
if direction = 270
{sprite_index = S;}
if direction = 315
{sprite_index = SE;}

Simple, really. However, it's all intertwined with the events. For the object, you'll need to set an alarm for the Create event (and set movement to all directions in the Create event). Then in the Alarm event, run this handy piece of code (and reset the alarm and movement too!). Make sure you have an 8-directional sprite set up, with the names listed here for the sprites. Maybe you could implement this if it's not too simple, TFS. Personally, I'm proud of myself for figuring it out. Yours is nicer, though.

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