初始化子弹资源2

bulletbak.py

@@ -47,3 +47,64 @@ class Bullet(object):
                 # 设置子弹移动方向
                 # self.speed = self.speed + 4
                 
+            elif self.type == 0: #BOSS
+                self.image = pygame.image.load("./images/bullet/bossbullet.png")
+                # self.speed = 4
+            else:
+                 # 加载敌人子弹默认图片
+                self.image = pygame.image.load("./images/bullet/enemybullet1.png")
+                # 设置子弹移动方向
+                # self.speed = self.speed
+        else:
+            # 加载英雄子弹图片
+            self.image = pygame.image.load("./images/bullet/herobullet.png")
+            # 设置子弹移动方向
+            self.speed = -self.speed
+        
+        self.visible = False
+        # 持有主场景对象
+        self.main_scene = scene
+        # 获得子弹矩形(x, y, width, height)
+        self.rect = self.image.get_rect()
+ 
+    # 设置子弹位置
+    def set_pos(self, x, y):
+        self.rect[0] = x
+        self.rect[1] = y
+ 
+    # 设置子弹速度
+    def set_speed(self, speed, angle = 90):
+        self.angle = angle*math.pi / 90
+        if self.is_enemy:
+            self.speed = self.speed
+        else:
+            self.speed = -self.speed
+
+        self.speed_x = math.sin(self.angle) *  self.speed
+        self.speed_y = math.cos(self.angle) * self.speed
+        
+            
+     
+    # 子弹移动
+    def action(self):
+        if not self.visible:
+            return
+        # 假设飞机矩形为plane_rect(10, 20, 200, 300)
+        # plane_rect.move_ip(10, 20), 那么结果是plane_rect(20, 40, 200, 300)
+        # 也就是原矩形x和y坐标加上move_ip函数x和y坐标，就是当前矩形新位置
+        
+        
+       
+        print(self.angle,self.speed_x)
+        self.rect.move_ip(self.speed_x, self.speed_y)
+        
+        # 如果子弹超出场景范围,则设置为不可见
+        if self.rect[1] < 0 or self.rect[1] > self.main_scene.size[1]:
+            self.visible = False
+ 
+    # 绘制子弹
+    def draw(self):
+        if not self.visible:
+            return
+        self.main_scene.scene.blit(self.image, (self.rect[0], self.rect[1]))
+