/// COLLISION
// Horizontale
if place_meeting(x+hspd, y, obj_solid) {
    while !place_meeting(x+sign(hspd), y, obj_solid) {
        x += sign(hspd);
    }
    hspd = 0;
}
x += hspd;

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


///GRAVITE
if place_meeting(x, y+1, obj_solid) { // Au sol
    if pwds {
        if airjx2 {
            airj = maxairj;
        }else {
            airj = minairj;
        }
    }
    vspd = 0;

    if jkey { // Saut
        vspd = -jspd;
        // Elasticité
        draw_yscale = 1.5;
        draw_xscale = .75;
    }
} else { // En l'air
    if vspd < maxgrav { // Gravité
        vspd += grav;
    }
    if airj { // Double saut
        if jkey {
            vspd = -jspd;
            airj -= 1;
        }
    }
}