'''
小恐龙游戏
'''
import cfg
import sys
import random
import pygame
from modules.sprites.scene import *
from modules.sprites.obstacle import *
from modules.sprites.dinosaur import *
from modules.interfaces.gameend import GameEndInterface
from modules.interfaces.gamestart import GameStartInterface


'''main'''
def main(highest_score):
	# 游戏初始化
	pygame.init()
	screen = pygame.display.set_mode(cfg.SCREENSIZE)
	pygame.display.set_caption('小恐龙快跑')
	# 导入所有声音文件
	sounds = {}
	for key, value in cfg.AUDIO_PATHS.items():
		sounds[key] = pygame.mixer.Sound(value)
	# 游戏开始界面
	GameStartInterface(screen, sounds, cfg)
	# 定义一些游戏中必要的元素和变量
	score = 0
	score_board = Scoreboard(cfg.IMAGE_PATHS['numbers'], position=(800, 15), bg_color=cfg.BACKGROUND_COLOR)
	highest_score = highest_score
	highest_score_board = Scoreboard(cfg.IMAGE_PATHS['numbers'], position=(650, 15), bg_color=cfg.BACKGROUND_COLOR, is_highest=True)
	dino = Dinosaur(cfg.IMAGE_PATHS['dino'])
	ground = Ground(cfg.IMAGE_PATHS['ground'], position=(0, cfg.SCREENSIZE[1]))
	cloud_sprites_group = pygame.sprite.Group()
	cactus_sprites_group = pygame.sprite.Group()
	ptera_sprites_group = pygame.sprite.Group()
	add_obstacle_timer = 0
	score_timer = 0
	# 游戏主循环
	clock = pygame.time.Clock()
	while True:
		for event in pygame.event.get():
			if event.type == pygame.QUIT:
				pygame.quit()
				sys.exit()
			elif event.type == pygame.KEYDOWN:
				if event.key == pygame.K_SPACE or event.key == pygame.K_UP:
					dino.jump(sounds)
				elif event.key == pygame.K_DOWN:
					dino.duck()
			elif event.type == pygame.KEYUP and event.key == pygame.K_DOWN:
				dino.unduck()
		screen.fill(cfg.BACKGROUND_COLOR)
		# --随机添加云
		if len(cloud_sprites_group) < 5 and random.randrange(0, 300) == 10:
			cloud_sprites_group.add(Cloud(cfg.IMAGE_PATHS['cloud'], position=(cfg.SCREENSIZE[0], random.randrange(30, 75))))
		# --随机添加仙人掌/飞龙
		add_obstacle_timer += 1
		if add_obstacle_timer > random.randrange(50, 150):
			add_obstacle_timer = 0
			random_value = random.randrange(0, 10)
			if random_value >= 5 and random_value <= 7:
				cactus_sprites_group.add(Cactus(cfg.IMAGE_PATHS['cacti']))
			else:
				position_ys = [cfg.SCREENSIZE[1]*0.100, cfg.SCREENSIZE[1]*0.75, cfg.SCREENSIZE[1]*0.50, cfg.SCREENSIZE[1]*0.20]
				ptera_sprites_group.add(Ptera(cfg.IMAGE_PATHS['ptera'], position=(600, random.choice(position_ys))))
		# --更新游戏元素
		dino.update()
		ground.update()
		cloud_sprites_group.update()
		cactus_sprites_group.update()
		ptera_sprites_group.update()
		score_timer += 1
		if score_timer > (cfg.FPS//12):
			score_timer = 0
			score += 1
			score = min(score, 99999)
			if score > highest_score:
				highest_score = score
			if score % 100 == 0:
				sounds['point'].play()
			if score % 1000 == 0:
				ground.speed -= 1
				for item in cloud_sprites_group:
					item.speed -= 1
				for item in cactus_sprites_group:
					item.speed -= 1
				for item in ptera_sprites_group:
					item.speed -= 1
		# --碰撞检测
		for item in cactus_sprites_group:
			if pygame.sprite.collide_mask(dino, item):
				dino.die(sounds)
		for item in ptera_sprites_group:
			if pygame.sprite.collide_mask(dino, item):
				dino.die(sounds)
		# --将游戏元素画到屏幕上
		dino.draw(screen)
		ground.draw(screen)
		cloud_sprites_group.draw(screen)
		cactus_sprites_group.draw(screen)
		ptera_sprites_group.draw(screen)
		score_board.set(score)
		highest_score_board.set(highest_score)
		score_board.draw(screen)
		highest_score_board.draw(screen)
		# --更新屏幕
		pygame.display.update()
		clock.tick(cfg.FPS)
		# --游戏是否结束
		if dino.is_dead:
			break
	# 游戏结束界面
	return GameEndInterface(screen, cfg), highest_score


'''run'''
if __name__ == '__main__':
	highest_score = 0
	while True:
		flag, highest_score = main(highest_score)
		if not flag: break