path: root/game.py

import cv2
import numpy as np

import pygame
import random
import threading
import sys

from cockroach import Cockroach
from asteroid import Asteroid

# Initialize Pygame
pygame.init()

# Define screen dimensions
SCREEN_WIDTH = 600
SCREEN_HEIGHT = 400

class MyGame:
    def __init__(self) -> None:
        # Open the webcam (0 is usually the default)
        self.cap = cv2.VideoCapture(0)

        # Create a list to hold cockroaches
        self.cockroaches = []
        self.asteroids = []

        # Create the game screen
        self.screen = pygame.display.set_mode((SCREEN_WIDTH, SCREEN_HEIGHT))
        pygame.display.set_caption('Camera Feed and Cockroach Panel')

        # Load font
        self.font = pygame.font.SysFont(None, 40)

        # Track whether the Pygame window should be closed
        self.running = True

        # Create an event to signal the camera feed thread to stop
        self.stop_event = threading.Event()

        # Game state variables
        self.lives = 5
        self.game_over = False

    def spawn_objects(self):
        # Spawn a new cockroach randomly
        if len(self.cockroaches) < 5 and random.random() < 0.02:
            self.cockroaches.append(Cockroach())

        # Spawn a new asteroid randomly
        if len(self.asteroids) < 2 and random.random() < 0.016:
            self.asteroids.append(Asteroid())

    def move_objects(self):
        # Move cockroaches downwards and remove off-screen ones
        for cockroach in self.cockroaches:
            cockroach.move_down()
            if cockroach.y >= SCREEN_HEIGHT:
                self.cockroaches.remove(cockroach)

        # Move asteroid downwards and remove off-screen ones
        for asteroid in self.asteroids:
            asteroid.move_down()
            if asteroid.y >= SCREEN_HEIGHT:
                self.asteroids.remove(asteroid)

    def detect_collision_cockroach(self, x, y, w, h):
        cockroaches_to_remove = []
        for cockroach in self.cockroaches:
            # Calculate left, right, top, and bottom boundaries of the cockroach
            cockroach_left = cockroach.x
            cockroach_right = cockroach.x + cockroach.width
            cockroach_top = cockroach.y
            cockroach_bottom = cockroach.y + cockroach.height

            # Calculate left, right, top, and bottom boundaries of the detection rectangle
            detection_left = x
            detection_right = x + w
            detection_top = y
            detection_bottom = y + h

            # Check for overlap
            if (cockroach_right >= detection_left and cockroach_left <= detection_right) and \
               (cockroach_bottom >= detection_top and cockroach_top <= detection_bottom):
                cockroaches_to_remove.append(cockroach)

        for cockroach in cockroaches_to_remove:
            self.cockroaches.remove(cockroach)

    def detect_collision_asteroid(self, x, y, w, h):
        asteroids_to_remove = []
        for asteroid in self.asteroids:
            # Calculate left, right, top, and bottom boundaries of the asteroid
            asteroid_left = asteroid.x
            asteroid_right = asteroid.x + asteroid.width
            asteroid_top = asteroid.y
            asteroid_bottom = asteroid.y + asteroid.height

            # Calculate left, right, top, and bottom boundaries of the detection rectangle
            detection_left = x
            detection_right = x + w
            detection_top = y
            detection_bottom = y + h

            # Check for overlap
            if (asteroid_right >= detection_left and asteroid_left <= detection_right) and \
               (asteroid_bottom >= detection_top and asteroid_top <= detection_bottom):
                asteroids_to_remove.append(asteroid)

        for asteroid in asteroids_to_remove:
            self.asteroids.remove(asteroid)
            self.lives -= 1
            if self.lives == 0:
                self.game_over = True

    def draw_text(self, text, color, x, y):
        text_surface = self.font.render(text, True, color)
        text_rect = text_surface.get_rect()
        text_rect.midtop = (x, y)
        self.screen.blit(text_surface, text_rect)

    def start_game(self):

        while not self.stop_event.is_set() and not self.game_over:
            for event in pygame.event.get():
                if event.type == pygame.QUIT:
                    # Set the stop event when the 'x' button is clicked
                    self.stop_event.set()

            self.spawn_objects()
            self.move_objects()

            # Read frame from the webcam
            ret, frame = self.cap.read()

            # If frame is not returned, break
            if not ret:
                break

            # Rotate the frame counter-clockwise by 90 degrees
            frame = cv2.rotate(frame, cv2.ROTATE_90_COUNTERCLOCKWISE)

            # Convert frame from RGB to HSV, and define frame used for detection
            det_frame = cv2.cvtColor(frame, cv2.COLOR_BGR2HSV)

            # Define lower green and upper green ranges
            lower_green1 = np.array([0, 100, 100])
            upper_green1 = np.array([30, 255, 255])

            lower_green2 = np.array([60, 100, 100])
            upper_green2 = np.array([100, 255, 255])

            # Combine the green masks
            green_mask1 = cv2.inRange(det_frame, lower_green1, upper_green1)
            green_mask2 = cv2.inRange(det_frame, lower_green2, upper_green2)
            green_mask = cv2.bitwise_or(green_mask1, green_mask2)


            # Detect contours            
            contours, _ = cv2.findContours(green_mask, cv2.RETR_EXTERNAL, cv2.CHAIN_APPROX_SIMPLE)
            
            # Find largest contour
            largest_contour = max(contours, key=cv2.contourArea) if contours else None

            # If largest contour is present, draw a green rectangle
            if largest_contour is not None:
                x, y, w, h = cv2.boundingRect(largest_contour)
                self.detect_collision_cockroach(x, y, w, h)
                self.detect_collision_asteroid(x, y, w, h)
                cv2.rectangle(frame, (x, y), (x + w, y + h), (0, 255, 0), 2)
            
            frame_rgb = cv2.cvtColor(frame, cv2.COLOR_BGR2RGB)

            # Convert frame to Pygame surface
            frame_pygame = pygame.surfarray.make_surface(frame_rgb)

            # Draw the camera feed as the background
            self.screen.blit(frame_pygame, (0, 0))

            # Draw the cockroach panel x,yon top of the camera feed
            for cockroach in self.cockroaches:
                cockroach.draw(self.screen)

            # Draw the cockroach panel on top of the camera feed
            for asteroid in self.asteroids:
                asteroid.draw(self.screen)

            # Draw the lives count
            self.draw_text("Lives: " + str(self.lives), (255, 255, 255), SCREEN_WIDTH - 70, 10)

            # Update the display
            pygame.display.flip()

        # Release the captured webcam
        self.cap.release()

        # If the game is over, show "Game Over" message
        if self.game_over:
            self.screen.fill((0, 0, 0))
            self.draw_text("Game Over", (255, 0, 0), SCREEN_WIDTH // 2, SCREEN_HEIGHT // 2)
            pygame.display.flip()
            # Wait for a few seconds before stopping the game
            pygame.time.wait(2000)

        # Destroy all CV2 Windows
        cv2.destroyAllWindows()

    def loop(self) -> None:
        # Start the webcam feed and cockroach panel in separate threads
        cockroach_thread = threading.Thread(target=self.start_game)
        cockroach_thread.start()

        while self.running:
            # Handle events for the Pygame window
            for event in pygame.event.get():
                if event.type == pygame.QUIT:
                    # Close the Pygame window
                    self.running = False

            # Quit if 'q' is pressed
            if cv2.waitKey(1) & 0xFF == ord('q'):
                self.running = False

        # Signal the camera feed thread to stop
        self.stop_event.set()

if __name__ == '__main__':
    game = MyGame()

    # Start the webcam feed and cockroach panel together
    game.loop()