Game Maker

/// @desc Player Varibles
grav = .5;
spd = 4;
jspd = 8;
hspd = 0;
vspd = 0;
djmp = 1;
fric = .5;

// Mapping Keys
var rkey = keyboard_check(vk_right);
var lkey = keyboard_check(vk_left);
var jkey = keyboard_check_pressed(vk_space);

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

    // Jump
    if (jkey) {
        vspd = -jspd;   
    }
} else {
    // Gravity
    if(vspd < 10) {
       vspd += grav;
    }
    
    if (keyboard_check_released(vk_space) && vspd < -4) {   
        vspd = -4
    }
    
    // Check for djmp
    if (djmp > 0) {
        if (jkey) {
            vspd = -jspd;
            djmp -= 1;
        }
    }
}

// Move right
if (rkey) {
    if (hspd < spd) {
        hspd += fric;       
    } else {
            hspd = spd;
        
}

// Move left
if (lkey) {
    if (hspd > -spd) {
        hspd -= fric;       
    } else {
            hspd = -spd;
        
}

// Check for not moving
if ((!rkey && !lkey ) || (rkey && lkey)) {
    if (hspd != 0) {
        if (hspd < 0) {
            hspd += fric;
        } else {
            hspd -= fric;
        }
    }
}

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

// Move horizontally
x += hspd;

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

// Move vertically
y += vspd;