NOT WORKING - movement, running, jumping and gravity

key_left = keyboard_check(vk_left);
key_right = keyboard_check(vk_right);
key_jump = keyboard_check_pressed(vk_space);
key_run = keyboard_check(vk_shift);

// HORIZONTAL MOVEMENT
var move = key_right - key_left;

hspd = move * (key_run ? runSpeed : walkSpeed);

if (move == 0) {
    sprite_index = spr_beast_stand_right;
} else if (move == 1) {
    sprite_index = key_run ? spr_beast_run_right : spr_beast_walk_right;
} else {
    sprite_index = key_run ? spr_beast_run_left : spr_beast_walk_left;
}

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

// GRAVITY AND JUMP

if (place_meeting(x,y+1,objNormalWall) && key_jump) {
    vspd = -jumpspeed;
}

vspd = vspd + grv;

if (place_meeting(x, y+vspd, objNormalWall)) {
    while (!place_meeting(x,y+sign(vspd), objNormalWall)) {
        y+=sign(vspd);
    }
    vspd = 0;
}
y+=vspd;