'''游戏优化

要求如下：

1. 绘制‘钻石’角色

2. 钻石随背景同步移动，移出舞台后从右侧重新进入

3. 摩托碰到钻石后，钻石从右侧重新进入

4. 变量 score 记录收集到的钻石数量

5. 在窗口内，绘制文字‘收集宝石：×颗’'''
import pgzrun
import random
from pgzhelper import *

# 游戏窗口大小
WIDTH = 1500
HEIGHT = 800

# 创建背景角色
bg1 = Actor('连续道路', topleft=(0, 0))
bg2 = Actor('连续道路', topleft=(1500, 0))

# 创建障碍物
obstacles = []
for _ in range(3):  # 障碍物数量
    x = random.randint(WIDTH, WIDTH + 1500)  # 障碍物出现在屏幕右侧外
    y = random.randint(100, HEIGHT - 50)
    obstacles.append(Actor('路障', (x, y)))

# 创建摩托车
motor = Actor('摩托1', (200, HEIGHT // 2))
# 将摩托造型存放在列表内
motor.images = ['摩托1', '摩托2']

# 创建终点线
line = Actor('终点线', topleft=(20000, 163))

# 创建钻石
zuan = Actor('钻石', topleft=(WIDTH + 100, random.randint(100, HEIGHT - 50)))

# 初始化设置
speed = 15
flag = 0
score = 0


def draw():
    # 绘制连续背景
    bg1.draw()
    bg2.draw()
    if flag == 1:
        music.stop()
        screen.blit('摩托成功', (0, 0))
    elif flag == 2:
        music.stop()
        screen.blit('摩托失败', (0, 0))
    else:
        # 绘制障碍物
        for obs in obstacles:
            obs.draw()
            # 绘制摩托
        motor.draw()
        # 绘制终点线
        line.draw()
        # 绘制钻石
        zuan.draw()
        # 绘制距离文字
        x = int(line.x - motor.x)
        screen.draw.text(f'距终点：{x} m', (50, 700), fontname='simkai', fontsize=50)
        # 绘制钻石数量文字
        screen.draw.text(f'收集钻石：{score}颗', (50, 100), fontname='simkai', fontsize=50)


# 背景、终点线移动
def bg_move():
    bg1.x -= speed
    bg2.x -= speed
    if bg1.right <= 0:
        bg1.left = bg2.right
    if bg2.right <= 0:
        bg2.left = bg1.right
    line.x -= speed
    zuan.x -= speed
    if zuan.x <= 0:
        zuan.x = random.randint(WIDTH, WIDTH + 1500)
        zuan.y = random.randint(100, HEIGHT - 50)

    # 更新障碍物位置


def obs_move():
    for obs in obstacles:
        obs.x -= speed  # 障碍物随背景一起移动
        if obs.x < 0:
            obs.x = random.randint(WIDTH, WIDTH + 1500)  # 障碍物继续出现在屏幕外
            obs.y = random.randint(100, HEIGHT - 50)


# 最后冲刺
def line_collide():
    global flag
    if motor.collide_pixel(line):
        flag = 1
    else:
        motor.x += 15


# 判断是否与障碍物相撞
def obs_collide():
    global flag
    for obs in obstacles:
        if motor.collide_pixel(obs):
            flag = 2


# 收集钻石
def zuan_collide():
    global score
    if motor.collide_pixel(zuan):
        score += 1
        zuan.x = random.randint(WIDTH, WIDTH + 1500)
        zuan.y = random.randint(100, HEIGHT - 50)


def update():
    if flag == 0:
        if line.x > WIDTH - 200:  # 正常行驶
            bg_move()
            obs_move()
        else:  # 最后冲刺
            line_collide()
            # 控制赛车移动，限制不能出界
        if keyboard.up and motor.top > 0:
            motor.y -= 7
        if keyboard.down and motor.bottom < HEIGHT - 50:
            motor.y += 7
        # 是否碰撞障碍物
        obs_collide()
        # 是否碰到钻石
        zuan_collide()


def change_image():
    motor.next_image()


clock.schedule_interval(change_image, 0.2)
music.play('速度与激情')

pgzrun.go()