大戰外星人
成員：王譽錚、楊子右、邱妍瑛
OUTLINE
- 遊戲簡介
- 程式碼講解
遊戲簡介
Introduction
遊戲畫面
▲ 遊戲起始畫面
▲ 遊戲結束畫面
display of the game
遊玩畫面
game screen
相關設定
下載大小 64 的版本
程式碼
Code
初始設定
import pygame
aliens = []
bullets = []
score = [0] #分數
BLACK = (0,0,0)
WHITE = (225,225,225)
class Settings():
#初始設定
def __init__(self):
self.screen_width=900
self.screen_height=600
self.bg_color = (1,42,111)飛船設定
class Ship():
def __init__(self, ai_settings, screen):
#設置飛船的初始位置
self.screen = screen
self.ai_settings = ai_settings
self.image = pygame.image.load('ship.png')#載入飛船圖像
self.rect = self.image.get_rect()#取得他的矩形
self.screen_rect = screen.get_rect()#取得畫面的矩形
self.rect.centerx = self.screen_rect.centerx #飛船的中間值x = 畫面的中間值x
self.rect.bottom = self.screen_rect.bottom #飛船的y值 = 螢幕的底部y值
#将飛船的属性center中存成小數
self.center=float(self.rect.centerx)
#移動標誌
self.moving_right = False
self.moving_left = False
def update(self) :
#根據移動調整飛船的位置
if self.moving_right and self.rect.right < self.screen_rect.right :
self.center += 1.5
if self.moving_left and self.rect.left > self.screen_rect.left :
self.center -= 1.5
self.rect.centerx = self.center
def blitme(self):
self.screen.blit(self.image, self.rect)外星人設定
class Alien():
def __init__(self, ai_settings, screen):
self.screen = screen
self.ai_settings = ai_settings
self.image = pygame.image.load('alien.png')#載入圖片
self.rect = self.image.get_rect()#取得外星人的矩形
self.rect.centerx = 0#設定中間值x
self.rect.bottom = 64 #設定底部y
self.speed_x = 1
self.speed_y = 64 #設定速度
self.x= self.rect.centerx
self.y= self.rect.bottom
def update(self):
self.x = self.x + self.speed_x #使外星人向右跑
if self.x + 91 > 900:#如果超出邊界，則往下一行出現
self.x = 0
self.y = self.y + self.speed_y
#更新外星人的rect位置
self.rect.centerx = self.x
self.rect.bottom = self.y
def draw(self):
self.screen.blit(self.image, self.rect)更新畫面
def update_screen(ai_settings, screen, ship, bullets, alien, aliens) :
#每次循環時更新畫面
screen.fill(ai_settings.bg_color)
#在飛船和外星人后面重新繪製所有子彈
for bullet in bullets:
bullet.draw()
ship.blitme()
for alien in aliens:
alien.draw()
for bullet in bullets:
for alien in aliens:
if collision_check(bullet, alien): #如果碰撞的話
aliens.remove(alien)
bullets.remove(bullet)
score[0] = score[0] + 10
draw_text("magazine*" + str(magazine[0]), 40, WHITE, 100, 20,screen) #子彈剩餘數目
# 讓最近繪製的屏幕可見
pygame.display.flip()子彈設定
class Bullet():
def __init__(self, ai_settings, screen, ship):
self.screen = screen
self.ai_settings = ai_settings
#在（0,0）處創建一個表示子彈的矩形，再設置正确的位置
self.rect = pygame.Rect(0,0,10,15)
self.rect.centerx=ship.rect.centerx
self.rect.top = ship.rect.top
#用小數來標示子彈的位置
self.y= self.rect.y
self.color = WHITE
self.speed_factor = 1
def update(self):
#子彈向上移動，更新小數
self.y -= self.speed_factor
#更新表示子彈的rect的位置
self.rect.y = self.y
def draw(self):
pygame.draw.rect(self.screen,self.color,self.rect)def draw_text(text, size, color, x, y,screen):
font = pygame.font.SysFont('arial', size)
text_surface = font.render(text, True, color)
text_rect = text_surface.get_rect()
text_rect.center = (x, y)
screen.blit(text_surface, text_rect)文字輸出設定
# ...
magazine = [4] #彈匣
# ...
def update_screen(ai_settings, screen, ship, bullets, alien, aliens) :
# ...
for bullet in bullets:
for alien in aliens:
if collision_check(bullet, alien): #如果碰撞的話
aliens.remove(alien)
bullets.remove(bullet)
score[0] = score[0] + 10
#子彈剩餘數目
draw_text("magazine*" + str(magazine[0]), 40, WHITE, 100, 20,screen)子彈打到外星人
def collision_check(object_A, object_B):
return(object_A.rect.colliderect(object_B.rect))碰撞判斷
用 colliderect() 來測試兩個矩形是否重疊
def check_keydown_events(event, screen, ship, bullets, last_shoot) :
if event.key == pygame.K_RIGHT :
ship.moving_right =True
elif event.key == pygame.K_LEFT :
ship.moving_left =True
elif event.key == pygame.K_SPACE :
if magazine[0] > 0: #如果有子彈的話
new_bullet = Bullet(screen,ship)
bullets.append(new_bullet)
magazine[0] = magazine[0] - 1按鍵按下
def check_keyup_events(event,ship) :
if event.key == pygame.K_RIGHT:
ship.moving_right = False
elif event.key == pygame.K_LEFT :
ship.moving_left =False按鍵放開
def check_events(screen,ship,bullets):
for event in pygame.event.get():
if event.type == pygame.QUIT :
quitgame()
elif event.type == pygame.KEYDOWN :
check_keydown_events(event, screen, ship, bullets)
elif event.type == pygame.KEYUP :
check_keyup_events(event, ship)按鍵相關
def game_intro():
pygame.init()
ai_settings=Settings()
screen = pygame.display.set_mode((ai_settings.screen_width, ai_settings.screen_height))
image = pygame.image.load('game_intro.png')
screen.blit(image, (0,0))
aliens.clear()
bullets.clear()
magazine[0] = 4 #彈匣
score[0] = 0 #分數
while True:
for event in pygame.event.get():
if event.type == pygame.QUIT :
quitgame()
elif event.type == pygame.KEYDOWN : #如果按下空白鍵即可開始遊戲
if event.key == pygame.K_SPACE :
run_game()
draw_text("Press space to start game", 40, BLACK, 450, 400, screen)
pygame.display.flip()開始畫面
def run_game():
pygame.init()
ai_settings=Settings()
screen = pygame.display.set_mode((ai_settings.screen_width, ai_settings.screen_height))
pygame.display.set_caption("Alien Invasion")
ship = Ship(ai_settings,screen)
alien = Alien(ai_settings,screen)
game_time = pygame.time.get_ticks()遊戲進行-1
#...
while True:
# 查看事件 #確定按鍵是否有被使用
check_events(screen, ship, bullets)
ship.update() #載入飛船
#每500毫秒產生一個新的外星人
if pygame.time.get_ticks() % 500 == 0:
aliens.append(Alien(screen))
for alien in aliens:
alien.update() #載入外星人
#外星人到達底線
if alien.rect.bottom >= 600:
aliens.remove(alien)
score[0] = score[0] - 5遊戲進行-2
#...
for bullet in bullets:
bullet.update() #載入子彈
shoot = pygame.time.get_ticks()
#每過2秒補充一子彈
if shoot - last_shoot[0] > 2000 and magazine[0] < 4:
magazine[0] = magazine[0] + 1
last_shoot[0] = shoot
#更新畫面
update_screen(ai_settings, screen, ship, bullets, alien, aliens)
#100秒後遊戲結束
if pygame.time.get_ticks() - game_time > 10000:
time_up(screen)
break遊戲進行-3
last_shoot = [pygame.time.get_ticks()] #擊發的時間import time
# ...
def time_up(screen):
image = pygame.image.load('time_up.png')
screen.blit(image, (0,0))
draw_text("score:" + str(score[0]), 100, BLACK, 450, 330, screen)
pygame.display.flip()
time.sleep(3)
game_intro()時間限制
def quitgame():
pygame.quit()
quit()離開遊戲
game_intro()