魂斗罗python源代码（学习 Python 之 Pygame 开发魂斗罗（四））
导读：继续编写魂斗罗 在上次的博客学习 Python 之 Pygame 开发魂斗罗（三）中，我们完成了角色的移动和跳跃，下面我们来继续写魂斗罗。...
继续编写魂斗罗
在上次的博客学习 Python 之 Pygame 开发魂斗罗（三）中 ，我们完成了角色的移动和跳跃 ，下面我们来继续写魂斗罗 。
下面是图片的素材
链接：https://pan.baidu.com/s/1X7tESkes_O6nbPxfpHD6hQ?pwd=hdly
提取码：hdly1. 创建子弹类
发射子弹首先要有子弹类
我们来创建一下 import pygame from Constants import * class Bullet(pygame.sprite.Sprite): def __init__(self, person): pygame.sprite.Sprite.__init__(self) self.images = [ loadImage(../Image/Bullet/bullet1.png) ] self.index = 0 self.image = self.images[self.index] # 速度 self.xSpeed = 1 self.ySpeed = 1 self.rect = pygame.Rect(person.rect) # 销毁开关 self.isDestroy = False def move(self): self.rect.x += self.xSpeed self.rect.y += self.ySpeed self.checkBullet() def draw(self, window): window.blit(self.image, self.rect) def checkBullet(self): toDestroy = False if self.rect.top < 0 or self.rect.top > 600: toDestroy = True if self.rect.left < 0 or self.rect.right > 900: toDestroy = True if toDestroy: self.isDestroy = True2. 根据玩家方向和状态设置子弹发射的位置
由于玩家的方向和状态不一样 ，所以玩家开火后 ，子弹发射的位置也不一样
下面我们来看看角色状态和发射子弹的位置
(1). 站立向右发射子弹(x,y) 是图片的位置 ，我们计算出 ，此状态下 ，子弹发射的位置是 (x+24,y+11)
下面我们来设置一下
self.rect.x += 24 * 2.5 self.rect.y += 11 * 2.5 self.ySpeed = 0 self.xSpeed = 72.5是人物放大的倍数 ，加载图像的时候把图像放大了2.5倍 ，所以设置子弹发射位置的时候 ，同样要乘以2.5
if person.isStanding: # 判断方向 # 方向向右 if person.direction == Direction.RIGHT: # 向上 if person.isUp: pass # 向右 else: self.rect.x += 24 * 2.5 self.rect.y += 11 * 2.5 self.ySpeed = 0 self.xSpeed = 7 # 方向向左 else: if person.isUp: pass else: pass elif person.isSquating and not person.isWalking: if person.direction == Direction.RIGHT: pass else: pass elif person.isWalking: if person.direction == Direction.RIGHT: if person.isUp: pass elif person.isDown: pass else: pass else: if person.isUp: pass elif person.isDown: pass else: pass elif person.isJumping or person.state == State.FALL: if person.direction == Direction.RIGHT: pass else: pass (2). 站立向左发射子弹 self.rect.y += 11 * 2.5 self.ySpeed = 0 self.xSpeed = -7 # 根据角色的方向和状态设置子弹发射的位置 # 角色站着 if person.isStanding: # 判断方向 if person.direction == Direction.RIGHT: # 向上 if person.isUp: pass else: self.rect.x += 24 * 2.5 self.rect.y += 11 * 2.5 self.ySpeed = 0 self.xSpeed = 7 else: if person.isUp: pass else: self.rect.y += 11 * 2.5 self.ySpeed = 0 self.xSpeed = -7 elif person.isSquating and not person.isWalking: if person.direction == Direction.RIGHT: pass else: pass elif person.isWalking: if person.direction == Direction.RIGHT: if person.isUp: pass elif person.isDown: pass else: pass else: if person.isUp: pass elif person.isDown: pass else: pass elif person.isJumping or person.state == State.FALL: if person.direction == Direction.RIGHT: pass else: pass (3). 站立朝上发射子弹站立向右朝上发射子弹
self.rect.x += 10 * 2.5 self.rect.y += -1 * 2.5 self.ySpeed = -7 self.xSpeed = 0这里我微微调整了一下y的值 ，方向向上 ，所以子弹的y是逐渐减小的 ，所以y速度是负数
# 根据角色的方向和状态设置子弹发射的位置 # 角色站着 if person.isStanding: # 判断方向 if person.direction == Direction.RIGHT: # 向上 if person.isUp: self.rect.x += 10 * 2.5 self.rect.y += -1 * 2.5 self.ySpeed = -7 self.xSpeed = 0 else: self.rect.x += 24 * 2.5 self.rect.y += 11 * 2.5 self.ySpeed = 0 self.xSpeed = 7 else: if person.isUp: pass else: self.rect.y += 11 * 2.5 self.ySpeed = 0 self.xSpeed = -7 elif person.isSquating and not person.isWalking: if person.direction == Direction.RIGHT: pass else: pass elif person.isWalking: if person.direction == Direction.RIGHT: if person.isUp: pass elif person.isDown: pass else: pass else: if person.isUp: pass elif person.isDown: pass else: pass elif person.isJumping or person.state == State.FALL: if person.direction == Direction.RIGHT: pass else: pass站立向左朝上发射子弹也是同样的计算方式
self.rect.x += 10 * 2.5 self.rect.y += -1 * 2.5 self.ySpeed = -7 self.xSpeed = 0 # 根据角色的方向和状态设置子弹发射的位置 # 角色站着 if person.isStanding: # 判断方向 if person.direction == Direction.RIGHT: # 向上 if person.isUp: self.rect.x += 10 * 2.5 self.rect.y += -1 * 2.5 self.ySpeed = -7 self.xSpeed = 0 else: self.rect.x += 24 * 2.5 self.rect.y += 11 * 2.5 self.ySpeed = 0 self.xSpeed = 7 else: if person.isUp: self.rect.x += 10 * 2.5 self.rect.y += -1 * 2.5 self.ySpeed = -7 self.xSpeed = 0 else: self.rect.y += 11 * 2.5 self.ySpeed = 0 self.xSpeed = -7 elif person.isSquating and not person.isWalking: if person.direction == Direction.RIGHT: pass else: pass elif person.isWalking: if person.direction == Direction.RIGHT: if person.isUp: pass elif person.isDown: pass else: pass else: if person.isUp: pass elif person.isDown: pass else: pass elif person.isJumping or person.state == State.FALL: if person.direction == Direction.RIGHT: pass else: pass (4). 蹲下发射子弹向右示意图
self.rect.x += 34 * 2.5 self.rect.y += 25 * 2.5 self.ySpeed = 0 self.xSpeed = 7 # 根据角色的方向和状态设置子弹发射的位置 # 角色站着 if person.isStanding: # 判断方向 if person.direction == Direction.RIGHT: # 向上 if person.isUp: self.rect.x += 10 * 2.5 self.rect.y += -1 * 2.5 self.ySpeed = -7 self.xSpeed = 0 else: self.rect.x += 24 * 2.5 self.rect.y += 11 * 2.5 self.ySpeed = 0 self.xSpeed = 7 else: if person.isUp: self.rect.x += 10 * 2.5 self.rect.y += -1 * 2.5 self.ySpeed = -7 self.xSpeed = 0 else: self.rect.y += 11 * 2.5 self.ySpeed = 0 self.xSpeed = -7 elif person.isSquating and not person.isWalking: if person.direction == Direction.RIGHT: self.rect.x += 34 * 2.5 self.rect.y += 25 * 2.5 self.ySpeed = 0 self.xSpeed = 7 else: pass elif person.isWalking: if person.direction == Direction.RIGHT: if person.isUp: pass elif person.isDown: pass else: pass else: if person.isUp: pass elif person.isDown: pass else: pass elif person.isJumping or person.state == State.FALL: if person.direction == Direction.RIGHT: pass else: pass同样的 ，设置向左的发射位置
self.rect.y += 25 * 2.5 self.ySpeed = 0 self.xSpeed = -7 # 根据角色的方向和状态设置子弹发射的位置 # 角色站着 if person.isStanding: # 判断方向 if person.direction == Direction.RIGHT: # 向上 if person.isUp: self.rect.x += 10 * 2.5 self.rect.y += -1 * 2.5 self.ySpeed = -7 self.xSpeed = 0 else: self.rect.x += 24 * 2.5 self.rect.y += 11 * 2.5 self.ySpeed = 0 self.xSpeed = 7 else: if person.isUp: self.rect.x += 10 * 2.5 self.rect.y += -1 * 2.5 self.ySpeed = -7 self.xSpeed = 0 else: self.rect.y += 11 * 2.5 self.ySpeed = 0 self.xSpeed = -7 elif person.isSquating and not person.isWalking: if person.direction == Direction.RIGHT: self.rect.x += 34 * 2.5 self.rect.y += 25 * 2.5 self.ySpeed = 0 self.xSpeed = 7 else: self.rect.y += 25 * 2.5 self.ySpeed = 0 self.xSpeed = -7 elif person.isWalking: if person.direction == Direction.RIGHT: if person.isUp: pass elif person.isDown: pass else: pass else: if person.isUp: pass elif person.isDown: pass else: pass elif person.isJumping or person.state == State.FALL: if person.direction == Direction.RIGHT: pass else: pass (5). 向斜方发射子弹向斜右上方发射子弹示意图
self.rect.x += 20 * 2.5 self.rect.y += -1 * 2.5 self.ySpeed = -7 self.xSpeed = 7向斜左上方发射子弹时的子弹位置
self.rect.x += -3 * 2.5 self.rect.y += -1 * 2.5 self.ySpeed = -7 self.xSpeed = -7向斜右下方发射子弹示意图
self.rect.x += 21 * 2.5 self.rect.y += 20 * 2.5 self.ySpeed = 7 self.xSpeed = 7向斜左下方发射子弹时的子弹位置
self.rect.x += -3 * 2.5 self.rect.y += 20 * 2.5 self.ySpeed = 7 self.xSpeed = -7 (6). 奔跑时发射子弹奔跑时发射子弹和站立发射子弹是一样的
向右
self.rect.x += 24 * 2.5 self.rect.y += 11 * 2.5 self.ySpeed = 0 self.xSpeed = 7向左
self.rect.y += 11 * 2.5 self.ySpeed = 0 self.xSpeed = -7完整的代码
if person.isStanding: if person.direction == Direction.RIGHT: if person.isUp: self.rect.x += 10 * 2.5 self.rect.y += -1 * 2.5 self.ySpeed = -7 self.xSpeed = 0 else: self.rect.x += 24 * 2.5 self.rect.y += 11 * 2.5 self.ySpeed = 0 self.xSpeed = 7 else: if person.isUp: self.rect.x += 10 * 2.5 self.rect.y += -1 * 2.5 self.ySpeed = -7 self.xSpeed = 0 else: self.rect.y += 11 * 2.5 self.ySpeed = 0 self.xSpeed = -7 elif person.isSquating and not person.isWalking: if person.direction == Direction.RIGHT: self.rect.x += 34 * 2.5 self.rect.y += 25 * 2.5 self.ySpeed = 0 self.xSpeed = 7 else: self.rect.y += 25 * 2.5 self.ySpeed = 0 self.xSpeed = -7 elif person.isWalking: if person.direction == Direction.RIGHT: if person.isUp: self.rect.x += 20 * 2.5 self.rect.y += -1 * 2.5 self.ySpeed = -7 self.xSpeed = 7 elif person.isDown: self.rect.x += 21 * 2.5 self.rect.y += 20 * 2.5 self.ySpeed = 7 self.xSpeed = 7 else: self.rect.x += 24 * 2.5 self.rect.y += 11 * 2.5 self.ySpeed = 0 self.xSpeed = 7 else: if person.isUp: self.rect.x += -3 * 2.5 self.rect.y += -1 * 2.5 self.ySpeed = -7 self.xSpeed = -7 elif person.isDown: self.rect.x += -3 * 2.5 self.rect.y += 20 * 2.5 self.ySpeed = 7 self.xSpeed = -7 else: self.rect.y += 11 * 2.5 self.ySpeed = 0 self.xSpeed = -7 elif person.isJumping or person.state == State.FALL: if person.direction == Direction.RIGHT: pass else: pass (7). 跳跃时发射子弹 elif person.isJumping or person.state == State.FALL: if person.direction == Direction.RIGHT: self.rect.x += 16 * 2.5 self.rect.y += 8 * 2.5 self.ySpeed = 0 self.xSpeed = 7 else: self.rect.x += -2 * 2.5 self.rect.y += 8 * 2.5 self.ySpeed = 0 self.xSpeed = -7完整子弹类代码
import pygame from Constants import * class Bullet(pygame.sprite.Sprite): def __init__(self, person): pygame.sprite.Sprite.__init__(self) self.images = [ loadImage(../Image/Bullet/bullet1.png) ] self.index = 0 self.image = self.images[self.index] # 速度 self.xSpeed = 1 self.ySpeed = 1 self.rect = pygame.Rect(person.rect) if person.isStanding: if person.direction == Direction.RIGHT: if person.isUp: self.rect.x += 10 * 2.5 self.rect.y += -1 * 2.5 self.ySpeed = -7 self.xSpeed = 0 else: self.rect.x += 24 * 2.5 self.rect.y += 11 * 2.5 self.ySpeed = 0 self.xSpeed = 7 else: if person.isUp: self.rect.x += 10 * 2.5 self.rect.y += -1 * 2.5 self.ySpeed = -7 self.xSpeed = 0 else: self.rect.y += 11 * 2.5 self.ySpeed = 0 self.xSpeed = -7 elif person.isSquating and not person.isWalking: if person.direction == Direction.RIGHT: self.rect.x += 34 * 2.5 self.rect.y += 25 * 2.5 self.ySpeed = 0 self.xSpeed = 7 else: self.rect.y += 25 * 2.5 self.ySpeed = 0 self.xSpeed = -7 elif person.isWalking: if person.direction == Direction.RIGHT: if person.isUp: self.rect.x += 20 * 2.5 self.rect.y += -1 * 2.5 self.ySpeed = -7 self.xSpeed = 7 elif person.isDown: self.rect.x += 21 * 2.5 self.rect.y += 20 * 2.5 self.ySpeed = 7 self.xSpeed = 7 else: self.rect.x += 24 * 2.5 self.rect.y += 11 * 2.5 self.ySpeed = 0 self.xSpeed = 7 else: if person.isUp: self.rect.x += -3 * 2.5 self.rect.y += -1 * 2.5 self.ySpeed = -7 self.xSpeed = -7 elif person.isDown: self.rect.x += -3 * 2.5 self.rect.y += 20 * 2.5 self.ySpeed = 7 self.xSpeed = -7 else: self.rect.y += 11 * 2.5 self.ySpeed = 0 self.xSpeed = -7 elif person.isJumping or person.state == State.FALL: if person.direction == Direction.RIGHT: self.rect.x += 16 * 2.5 self.rect.y += 8 * 2.5 self.ySpeed = 0 self.xSpeed = 7 else: self.rect.x += -2 * 2.5 self.rect.y += 8 * 2.5 self.ySpeed = 0 self.xSpeed = -7 # 销毁开关 self.isDestroy = False def move(self): self.rect.x += self.xSpeed self.rect.y += self.ySpeed self.checkBullet() def draw(self, window): window.blit(self.image, self.rect) def checkBullet(self): toDestroy = False if self.rect.top < 0 or self.rect.top > 600: toDestroy = True if self.rect.left < 0 or self.rect.right > 900: toDestroy = True if toDestroy: self.isDestroy = True3. 在玩家类中加入开火
在常量文件中设置子弹上限
# 设置玩家子弹上限 PLAYER_BULLET_NUMBER = 15在玩家类的四个状态函数中加入发射的代码
if keys[pygame.K_j]: self.isFiring = True if len(playerBulletList) < PLAYER_BULLET_NUMBER: # 设置子弹发射的间隔为150 if currentTime - self.fireLastTimer > 150: playerBulletList.append(Bullet(self)) self.fireLastTimer = currentTime完整的玩家类
import pygame from Constants import * from Bullet import Bullet class PlayerOne(pygame.sprite.Sprite): def __init__(self, currentTime): pygame.sprite.Sprite.__init__(self) # 加载角色图片 self.standRightImage = loadImage(../Image/Player/Player1/Right/stand.png) self.standLeftImage = loadImage(../Image/Player/Player1/Left/stand.png) self.upRightImage = loadImage(../Image/Player/Player1/Up/upRight(small).png) self.upLeftImage = loadImage(../Image/Player/Player1/Up/upLeft(small).png) self.downRightImage = loadImage(../Image/Player/Player1/Down/down.png) self.downLeftImage = loadImage(../Image/Player/Player1/Down/down.png, True) self.obliqueUpRightImages = [ loadImage(../Image/Player/Player1/Up/rightUp1.png), loadImage(../Image/Player/Player1/Up/rightUp2.png), loadImage(../Image/Player/Player1/Up/rightUp3.png), ] self.obliqueUpLeftImages = [ loadImage(../Image/Player/Player1/Up/rightUp1.png, True), loadImage(../Image/Player/Player1/Up/rightUp2.png, True), loadImage(../Image/Player/Player1/Up/rightUp3.png, True), ] self.obliqueDownRightImages = [ loadImage(../Image/Player/Player1/ObliqueDown/1.png), loadImage(../Image/Player/Player1/ObliqueDown/2.png), loadImage(../Image/Player/Player1/ObliqueDown/3.png), ] self.obliqueDownLeftImages = [ loadImage(../Image/Player/Player1/ObliqueDown/1.png, True), loadImage(../Image/Player/Player1/ObliqueDown/2.png, True), loadImage(../Image/Player/Player1/ObliqueDown/3.png, True), ] # 角色向右的全部图片 self.rightImages = [ loadImage(../Image/Player/Player1/Right/run1.png), loadImage(../Image/Player/Player1/Right/run2.png), loadImage(../Image/Player/Player1/Right/run3.png) ] # 角色向左的全部图片 self.leftImages = [ loadImage(../Image/Player/Player1/Left/run1.png), loadImage(../Image/Player/Player1/Left/run2.png), loadImage(../Image/Player/Player1/Left/run3.png) ] # 角色跳跃的全部图片 self.upRightImages = [ loadImage(../Image/Player/Player1/Jump/jump1.png), loadImage(../Image/Player/Player1/Jump/jump2.png), loadImage(../Image/Player/Player1/Jump/jump3.png), loadImage(../Image/Player/Player1/Jump/jump4.png), ] self.upLeftImages = [ loadImage(../Image/Player/Player1/Jump/jump1.png, True), loadImage(../Image/Player/Player1/Jump/jump2.png, True), loadImage(../Image/Player/Player1/Jump/jump3.png, True), loadImage(../Image/Player/Player1/Jump/jump4.png, True), ] self.rightFireImages = [ loadImage(../Image/Player/Player1/Right/fire1.png), loadImage(../Image/Player/Player1/Right/fire2.png), loadImage(../Image/Player/Player1/Right/fire3.png), ] self.leftFireImages = [ loadImage(../Image/Player/Player1/Right/fire1.png, True), loadImage(../Image/Player/Player1/Right/fire2.png, True), loadImage(../Image/Player/Player1/Right/fire3.png, True), ] # 角色左右移动下标 self.imageIndex = 0 # 角色跳跃下标 self.upImageIndex = 0 # 角色斜射下标 self.obliqueImageIndex = 0 # 上一次显示图片的时间 self.runLastTimer = currentTime self.fireLastTimer = currentTime # 选择当前要显示的图片 self.image = self.standRightImage # 获取图片的rect self.rect = self.image.get_rect() # 设置角色的状态 self.state = State.STAND # 角色的方向 self.direction = Direction.RIGHT # 速度 self.xSpeed = PLAYER_X_SPEED self.ySpeed = 0 self.jumpSpeed = -11 # 人物当前的状态标志 self.isStanding = False self.isWalking = False self.isJumping = True self.isSquating = False self.isFiring = False # 重力加速度 self.gravity = 0.7 self.isUp = False self.isDown = False def update(self, keys, currentTime, playerBulletList): # 更新站或者走的状态 # 根据状态响应按键 if self.state == State.STAND: self.standing(keys, currentTime, playerBulletList) elif self.state == State.WALK: self.walking(keys, currentTime, playerBulletList) elif self.state == State.JUMP: self.jumping(keys, currentTime, playerBulletList) elif self.state == State.FALL: self.falling(keys, currentTime, playerBulletList) # 更新位置 # 记录前一次的位置坐标 pre = self.rect.x self.rect.x += self.xSpeed self.rect.y += self.ySpeed # 如果x位置小于0了 ，就不能移动 ，防止人物跑到屏幕左边 if self.rect.x <= 0: self.rect.x = pre # 更新动画 # 跳跃状态 if self.isJumping: # 根据方向 if self.direction == Direction.RIGHT: # 方向向右 ，角色加载向右跳起的图片 self.image = self.upRightImages[self.upImageIndex] else: # 否则 ，方向向左 ，角色加载向左跳起的图片 self.image = self.upLeftImages[self.upImageIndex] # 角色蹲下 if self.isSquating: if self.direction == Direction.RIGHT: # 加载向右蹲下的图片 self.image = self.downRightImage else: # 加载向左蹲下的图片 self.image = self.downLeftImage # 角色站着 if self.isStanding: if self.direction == Direction.RIGHT: if self.isUp: # 加载向右朝上的图片 self.image = self.upRightImage elif self.isDown: # 加载向右蹲下的图片 self.image = self.downRightImage else: # 加载向右站着的图片 self.image = self.standRightImage else: # 向左也是同样的效果 if self.isUp: self.image = self.upLeftImage elif self.isDown: self.image = self.downLeftImage else: self.image = self.standLeftImage # 角色移动 if self.isWalking: if self.direction == Direction.RIGHT: if self.isUp: # 加载斜右上的图片 self.image = self.obliqueUpRightImages[self.obliqueImageIndex] elif self.isDown: # 加载斜右下的图片 self.image = self.obliqueDownRightImages[self.obliqueImageIndex] else: # 加载向右移动的图片 ，根据开火状态是否加载向右开火移动的图片 if self.isFiring: self.image = self.rightFireImages[self.imageIndex] else: self.image = self.rightImages[self.imageIndex] else: if self.isUp: self.image = self.obliqueUpLeftImages[self.obliqueImageIndex] elif self.isDown: self.image = self.obliqueDownLeftImages[self.obliqueImageIndex] else: if self.isFiring: self.image = self.leftFireImages[self.imageIndex] else: self.image = self.leftImages[self.imageIndex] def standing(self, keys, currentTime, playerBulletList): """角色站立""" # 设置角色状态 self.isStanding = True self.isWalking = False self.isJumping = False self.isSquating = False self.isUp = False self.isDown = False self.isFiring = False # 设置速度 self.ySpeed = 0 self.xSpeed = 0 # 按下A键 if keys[pygame.K_a]: # A按下 ，角色方向向左 self.direction = Direction.LEFT # 改变角色的状态 ，角色进入移动状态 self.state = State.WALK # 设置站立状态为False ，移动状态为True self.isStanding = False self.isWalking = True # 向左移动 ，速度为负数 ，这样玩家的x坐标是减小的 self.xSpeed = -PLAYER_X_SPEED # 按下D键 elif keys[pygame.K_d]: # D按下 ，角色方向向右 self.direction = Direction.RIGHT # 改变角色的状态 ，角色进入移动状态 self.state = State.WALK # 设置站立状态为False ，移动状态为True self.isStanding = False self.isWalking = True # 向右移动 ，速度为正数 self.xSpeed = PLAYER_X_SPEED # 按下k键 elif keys[pygame.K_k]: # K按下 ，角色进入跳跃状态 ，但是不会改变方向 self.state = State.JUMP # 设置站立状态为False ，跳跃状态为True # 不改变移动状态 ，因为移动的时候也可以跳跃 self.isStanding = False self.isJumping = True # 设置速度 ，速度为负数 ，因为角色跳起后 ，要下落 self.ySpeed = self.jumpSpeed # 没有按下按键 else: # 没有按下按键 ，角色依然是站立状态 self.state = State.STAND self.isStanding = True # 按下w键 if keys[pygame.K_w]: # W按下 ，角色向上 ，改变方向状态 self.isUp = True self.isStanding = True self.isDown = False self.创心域SEO版权声明：以上内容作者已申请原创保护，未经允许不得转载，侵权必究！授权事宜、对本内容有异议或投诉，敬请联系网站管理员，我们将尽快回复您，谢谢合作！