if mouse_x >= object_x and mouse_x <= object_x + object_w and mouse_y >= object_y and mouse_y <= object_y + object_yh {
   //execute code
}

x = mouse_x
y = mouse_y

jump_act = false //в событие создания
if collision_rectangle(x, y, x + sprite_width / 2, y + sprite_height + 1, объект блока, 1, 1)//в событие шага
   jump_act = true

if jump_act == true {//в событие шага
   //Прыжок
   jump_act = false
}