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[GML] 8-Directional Movement code - Printable Version

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+----- Thread: [GML] 8-Directional Movement code (/thread-6974.html)

[GML] 8-Directional Movement code - InFecTioN - 05-26-2011

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This bit of code will allow your object to move in 8 directions.

Create Event

Code:
normal_speed = 5
is_move_vert = false
is_move_hori = false
move_speed   = normal_speed



Step Event

Code:
//Check and control player movement

is_move_vert = false
is_move_hori = false
dx = 0
dy = 0
divider = 1.0;

//Check differences in x and y coordinate according to key pressed.
//Check differences in x and y coordinate according to key pressed.

if (keyboard_check(vk_up))

{
dy = -move_speed;
}

if (keyboard_check(vk_down))

{
dy = move_speed;
}

if (keyboard_check(vk_left))

{
dx= -move_speed;
}

if (keyboard_check(vk_right))

{
dx = move_speed;
}

//Check movement orientation

if (keyboard_check(vk_up) or keyboard_check(vk_down))

{
is_move_vert = true;
}

if (keyboard_check(vk_left) or keyboard_check(vk_right))

{
is_move_hori = true;
}

//If move diagonally, then we need to divide the distance in x and y by square root of 2.

if( is_move_vert == true and is_move_hori == true )

{
divider = sqrt(2);
}

x+=dx/divider

y+=dy/divider