diff --git a/game.py b/game.py
index f3f1a7f..39baaeb 100644
--- a/game.py
+++ b/game.py
@@ -242,7 +242,7 @@ def render_camera(self):
             int(self.face_bottom_y*self.webcam.height()) - int(self.face_top_y*self.webcam.height())
         ))
         only_face_surf.blit(face_surf, (0,0), face_rect)
-        face_ratio = only_face_surf.get_rect().height / only_face_surf.get_rect().width
+        face_ratio = ( only_face_surf.get_rect().height / only_face_surf.get_rect().width ) if only_face_surf.get_rect().width != 0 else 0 # al menos si controlo division by 0 ejecuta.h
         face_area_width = 130
         face_area_height = face_area_width * face_ratio
         if (face_area_height > self.max_face_surf_height):
diff --git a/game.py.bak b/game.py.bak
new file mode 100644
index 0000000..2158580
--- /dev/null
+++ b/game.py.bak
@@ -0,0 +1,251 @@
+import pygame
+from constants import *
+from player import Player
+from pygame.locals import *
+from webcam import Webcam
+from enemy import Enemy
+from events import *
+from background import Background
+import globals
+import random
+
+import cv2
+import mediapipe as mp
+import math
+
+class Game:
+    def __init__(self):
+        self.screen = pygame.display.set_mode([SCREEN_WIDTH, SCREEN_HEIGHT])
+        self.clock = pygame.time.Clock()
+        self.running = True
+        self.started = False
+
+        #Facemesh
+        self.mp_face_mesh = mp.solutions.face_mesh
+        self.mp_drawing = mp.solutions.drawing_utils
+        self.mp_drawing_styles = mp.solutions.drawing_styles
+
+        pygame.init()
+        pygame.display.set_caption("Misiles")
+
+        self.font = pygame.font.Font('freesansbold.ttf', 32)
+        self.smaller_font = pygame.font.Font('freesansbold.ttf', 22)
+        self.background = Background()
+
+        self.initialize()
+
+    def initialize(self):
+        self.start_time = pygame.time.get_ticks()
+        self.last_frame_time = self.start_time
+        self.player = Player()
+        self.movement = 0
+
+        #Timers
+        self.enemy_timer = 1000
+        pygame.time.set_timer(ADD_ENEMY, self.enemy_timer)
+
+        self.enemies = pygame.sprite.Group()
+
+        self.lost = False
+        self.score = 0
+
+        self.webcam = Webcam().start()
+        
+        self.max_face_surf_height=0
+        self.face_left_x = 0
+        self.face_right_x = 0
+        self.face_top_y = 0
+        self.face_bottom_y = 0
+
+    def update(self, delta_time):
+        events = pygame.event.get()
+
+        for event in events:
+            if event.type == pygame.QUIT:
+                self.running = False
+
+            elif event.type == KEYDOWN:
+                if event.key == K_ESCAPE:
+                    self.running = False
+
+        if self.lost or not self.started:
+            for event in events:
+                #Cuando perdimos o no hemos empezado, ENTER comienza el juego
+                if event.type == KEYDOWN and event.key == K_RETURN:
+                    self.initialize()
+                    self.started = True
+        else:
+            #Aumentar la velocidad segun el tiempo qu ehemos durado
+            globals.game_speed = 1 + ( (pygame.time.get_ticks() - self.start_time) / 1000) * .1
+            self.score = self.score + (delta_time * globals.game_speed)
+
+            for event in events:
+                if event.type == ADD_ENEMY:
+                    #Agregar 1 o 2 enemigos
+                    num = random.randint(1,2)
+                    for e in range(num):
+                        enemy = Enemy()
+                        self.enemies.add(enemy)
+
+                    #Actualizar el timer que define cuando aparecera un nuevo enemigo
+                    self.enemy_timer = 1000 - ((globals.game_speed - 1) * 100)
+                    if self.enemy_timer < 50: self.enemy_timer = 50
+                    pygame.time.set_timer(ADD_ENEMY, int(self.enemy_timer))
+
+            self.player.update(self.movement, delta_time)
+            self.enemies.update(delta_time)
+            self.process_collisions()
+            self.background.update(delta_time)
+
+    def process_collisions(self):
+        #Colisiones para este juego los hacemos con mascaras
+        collide = pygame.sprite.spritecollide(self.player, self.enemies, False, pygame.sprite.collide_mask)
+        if collide:
+            self.lost = True
+
+    def render(self):
+        self.screen.fill((0,0,0))
+
+        self.background.render(self.screen)
+        
+        if self.webcam.lastFrame is not None:
+            self.render_camera()
+
+        self.screen.blit(self.player.surf, self.player.rect)
+
+        for e in self.enemies:
+            self.screen.blit(e.surf, e.rect)
+
+        display_score = round(self.score/1000)
+        text_score = self.font.render('Score: ' + str(display_score), True, (255,255,255))
+        scoreTextRect = text_score.get_rect()
+        scoreTextRect.bottom = SCREEN_HEIGHT-5
+        scoreTextRect.left = 5
+        self.screen.blit(text_score, scoreTextRect)
+
+        if self.lost:
+            game_over_text = self.font.render('GAME OVER :(', True, (255,255,255), (0,0,0))
+            game_over_text_rect = game_over_text.get_rect()
+            game_over_text_rect.center = (SCREEN_WIDTH // 2, SCREEN_HEIGHT // 2)
+            self.screen.blit(game_over_text, game_over_text_rect)
+
+            retry_text = self.smaller_font.render('Presiona Enter para reintentar', True, (200,200,200), (0,0,0))
+            retry_text_rect = retry_text.get_rect()
+            retry_text_rect.center = (SCREEN_WIDTH // 2, (SCREEN_HEIGHT // 2) + 40)
+            self.screen.blit(retry_text, retry_text_rect)
+
+        if not self.started:
+            game_over_text = self.font.render('Presiona Enter para comenzar', True, (255,255,255), (0,0,0))
+            game_over_text_rect = game_over_text.get_rect()
+            game_over_text_rect.center = (SCREEN_WIDTH // 2, SCREEN_HEIGHT // 2)
+            self.screen.blit(game_over_text, game_over_text_rect)
+
+        pygame.display.flip()
+
+    def loop(self):
+        with self.mp_face_mesh.FaceMesh(
+            static_image_mode=False,
+            max_num_faces=1,
+            min_detection_confidence=0.5,
+            refine_landmarks=True
+        ) as self.face_mesh:
+            while self.running:
+                if not self.lost:
+                    if not self.webcam.ready():
+                        continue
+                    self.process_camera()
+
+                time = pygame.time.get_ticks()
+                delta_time = time - self.last_frame_time
+                self.last_frame_time = time
+                self.update(delta_time)
+                self.render()
+                self.clock.tick(60)
+            pygame.quit()
+
+    def process_camera(self):
+        image = self.webcam.read()
+        if image is not None:
+            image.flags.writeable = False
+            image = cv2.flip(image, 1)
+            image = cv2.cvtColor(image, cv2.COLOR_BGR2RGB)
+            image.flags.writeable = True
+            image = cv2.cvtColor(image, cv2.COLOR_RGB2BGR)
+            results = self.face_mesh.process(image)
+            self.webcam_image = image
+            if results.multi_face_landmarks is not None:
+                for face_landmarks in results.multi_face_landmarks:
+
+                    #Coordenadas de la cara (arriba y abajo)
+                    top = (face_landmarks.landmark[10].x, face_landmarks.landmark[10].y)
+                    bottom = (face_landmarks.landmark[152].x, face_landmarks.landmark[152].y)
+
+                    #Obtener coordenadas del 'cuadrado' de la cara para poder mostrarlo en la pantalla despues
+                    self.face_left_x = face_landmarks.landmark[234].x
+                    self.face_right_x = face_landmarks.landmark[454].x
+                    self.face_top_y = face_landmarks.landmark[10].y
+                    self.face_bottom_y = face_landmarks.landmark[152].y
+
+                    #Dejar algo de espacio alrededor
+                    self.face_left_x = self.face_left_x - .1
+                    self.face_right_x = self.face_right_x + .1
+                    self.face_top_y = self.face_top_y - .1
+                    self.face_bottom_y = self.face_bottom_y + .1
+
+                    cv2.line(
+                        self.webcam_image, 
+                        (int(top[0] * self.webcam.width()), int(top[1] * self.webcam.height())),
+                        (int(bottom[0] * self.webcam.width()), int(bottom[1] * self.webcam.height())),
+                        (0, 255, 0), 3
+                    )
+
+                    cv2.circle(self.webcam_image, (int(top[0] * self.webcam.width()), int(top[1] * self.webcam.height())), 8, (0,0,255), -1)
+                    cv2.circle(self.webcam_image, (int(bottom[0] * self.webcam.width()), int(bottom[1] * self.webcam.height())), 8, (0,0,255), -1)
+
+                    #Deteccion de angulo
+                    self.detect_head_movement(top, bottom)
+
+            k = cv2.waitKey(1) & 0xFF
+
+    def detect_head_movement(self, top, bottom):
+        radians = math.atan2(bottom[1] - top[1], bottom[0] - top[0])
+        degrees = math.degrees(radians)
+
+        #Angulo de deteccion de 70 a 110 (-1 a 1)
+        min_degrees = 70
+        max_degrees = 110
+        degree_range = max_degrees - min_degrees
+        
+        if degrees < min_degrees: degrees = min_degrees
+        if degrees > max_degrees: degrees = max_degrees
+
+        self.movement = ( ((degrees-min_degrees) / degree_range) * 2) - 1
+
+    def render_camera(self):        
+        #Limpiar coordenadas del cuadro de la cara
+        if self.face_left_x < 0: self.face_left_x = 0
+        if self.face_right_x > 1: self.face_right_x = 1
+        if self.face_top_y < 0: self.face_top_y = 0
+        if self.face_bottom_y > 1: self.face_bottom_y = 1
+
+        face_surf = pygame.image.frombuffer(self.webcam_image, (int(self.webcam.width()), int(self.webcam.height())), "BGR")
+
+        face_rect = pygame.Rect(
+            int(self.face_left_x*self.webcam.width()),
+            int(self.face_top_y*self.webcam.height()), 
+            int(self.face_right_x*self.webcam.width()) - int(self.face_left_x*self.webcam.width()),
+            int(self.face_bottom_y*self.webcam.height()) - int(self.face_top_y*self.webcam.height())
+        )
+        
+        only_face_surf = pygame.Surface((
+            int(self.face_right_x*self.webcam.width()) - int(self.face_left_x*self.webcam.width()),
+            int(self.face_bottom_y*self.webcam.height()) - int(self.face_top_y*self.webcam.height())
+        ))
+        only_face_surf.blit(face_surf, (0,0), face_rect)
+                face_ratio = ( only_face_surf.get_rect().height / only_face_surf.get_rect().width ) if only_face_surf.get_rect().width != 0 else 0 # al menos si controlo division by 0 ejecuta.h
+        face_area_width = 130
+        face_area_height = face_area_width * face_ratio
+        if (face_area_height > self.max_face_surf_height):
+            self.max_face_surf_height = face_area_height
+        only_face_surf = pygame.transform.scale(only_face_surf, (int(face_area_width),int(self.max_face_surf_height)))
+        self.screen.blit(only_face_surf, only_face_surf.get_rect())
\ No newline at end of file