1. Pycharm game engine setup
2. Requirements analysis
3. The main logic
1.1 Start the Game
(1) Load the game window with the help of the game engine document
Website: www.pygame.org/docs/
Game window running results
(2) Event processing, close the game window, the tank movement direction button corresponding
Event handling official documentation
Keyboard operation, press up and down left and right keys, running results of the program (tank up and down left and right turn around movement)
1.2 Ending the Game
1.3 Text prompt for the remaining number of enemy tanks
Text formatting, color, etc. is done on the canvas, just stick the canvas on the game window
Game loading window (run result)
1.4 Loading our tanks
Orientation, image properties
The four directions of the tank, each representing 4 different pictures, put these pictures in the dictionary according to the keywords
Add image methods and image parameters
Operation results (renderings)
1.5 Our tanks are turning around and moving
If event.key == PyGame. K_LEFT: Print (" Tank turn left, Tank_p1.direction = 'L' # Move maingame.tank_p1.move () elif event.key == pygame.K_RIGHT: Print (" Tank head to the right, Tank_p1.direction = 'R' # Move the tank maingame.tank_p1.move () elif event.key == pygame.K_UP: Print (" Tank head up, Tank_p1.direction = 'U' # Move maingame.tank_p1.move () elif event.key == Tank_p1.direction = 'D' # print() maingame.tank_p1.move ()Copy the codeDef move(self): def move(self): if self. Direction == 'L': Self. rect.left -= self.speed # if the tank moves to the right, the left value increases elif self.direction == 'R': Self. rect.left += self.speed # tank moves up, top value decreases elif self.direction == 'U': Self.rect. top -= self.speed # tank moves down, top value increases elif self.direction == 'D': self.rect.top += self.speedCopy the codeMove the result of the run to the right
1.6 Boundary treatment in our tanks just in general
In the game engine, when the default tank orientation is left, the upper left dot represents the tank
Tanks are not allowed out of the game window
Def move(self): def move(self): def move(self): def move(self): def move(self): def move(self): def move(self): def move(self): def move(self): def move(self): def move(self): def move(self): Self. rect.left -= self.speed # if the tank moves to the right, the left value increases elif self.direction == 'R': If self.rect.left +self.rect.height < maingame.screen_width: Elif self.direction == 'U': if self.rect.top > 0: Self. rect.top -= self.speed # tank moves down, top value increases elif self.direction == 'D': if self.rect.top + self.rect.height < MainGame.SCREEN_HEIGHT: self.rect.top += self.speedCopy the code1.7 Tank movement switch
If event.key == PyGame. K_LEFT: Print (" Tank turn left, Tank_p1. direction = 'L' maingame.tank_p1. stop = False elif event.key == PyGame.k_right: Print (" Tank head to the right, Tank_p1. direction = 'R' maingame.tank_p1. stop = False elif event.key == PyGame.k_up: Print (" Tank head up, Tank_p1. direction = 'U' maingame.tank_p1. stop = False elif event.key == PyGame.k_down: Print (" Tank head down, Tank_p1. direction = 'D' maingame.tank_p1. stop = False elif event.key == PyGame.k_space: Print (" Tank firing bullets ") if event.type == pyGame.keyUp: # If the arrow key is released, Key == PyGame. K_LEFT or event.key == PyGame. K_RIGHT or event.key == PyGame. K_UP or event.key == Pygame. K_DOWN: # Change the tank movement status maingame.tank_p1. stop = TrueCopy the codeHandles tank movement speed
Time. Sleep (0.02)Copy the code2. Load enemy tanks
2.1 Randomly generate enemy tanks and load them in the window
The main code
Class EnemyTank(Tank): # def __init__(self,left,top,speed): self. Images = {'U': Pygame. Image. The load (' img/enemy tanks _U. PNG '), 'D' : pygame. Image. The load (' img/enemy tanks D.p ng '), 'L' : Pygame.image.load ('img/ enemy tank _L.png'), 'R': Load ('img/ enemy tank _r.png ')} self. Direction = self. RandDirection () self. Image = self Rect-> self.rect = self.image.get_rect() # specify the initial position of the tank from the x and y axes self.rect.left = left self.rect.top = top # Self. speed = 5 self.stop = True def randDirection(self): num = random. Randint (1,4) if num ==1: return 'U' elif num ==2: return 'D' elif num ==3: return 'L' elif num ==4: return 'R'Copy the codeThe results
2.2 Random movement of enemy tanks
def randMove(self):
if self.step <=0:
self.direction = self.randDirection()
self.step = 50
else:
self.move()
self.step -= 1
Copy the coderendering
3. Bullet packaging
3.1 Position of bullet
self.rect = self.image.get_rect()
if self.direction =='U':
self.rect.left = Tank.rect.left + Tank.rect.width/2 - self.rect.width/2
self.rect.top = Tank.rect.top - self.rect.top
elif self.direction =='D':
self.rect.left = Tank.rect.left + Tank.rect.width / 2 - self.rect.width/2
self.rect.top = Tank.rect.top + self.rect.height
elif self.direction == 'L':
self.rect.left = Tank.rect.left - self.rect.width / 2 - self.rect.width/2
self.rect.top = Tank.rect.top + Tank.rect.width/2 - self.rect.width/2
elif self.direction =='R':
self.rect.left = Tank.rect.left + Tank.rect.width
self.rect.top = Tank.rect.top + Tank.rect.width / 2 - self.rect.width/2
Copy the code3.2 Movement of bullets
Def bulletMove(self): if self.direction == 'U': if self.rect.top > 0: self.rect.top -=self.speed else: pass elif self.direction == 'D': if self.rect.top < MainGame.SCREEN_HEIGHT - self.rect.height: self.rect.top += self.speed else: pass elif self.direction == 'L': if self.rect.left > 0: self.rect.left -= self.speed elif self.direction == 'R': if self.rect.left < MainGame.SCREEN_WIDTH - self.rect.width: self.rect.left += self.speed else: passCopy the coderendering
3.2 Bullet extinction, control the number of bullets
Elif event.key == pygame.K_SPACE: print(" Bullet_list ") if len(maingame.bullet_list) < 3: Maingame.bullet_list.append (m) else: maingame.bullet_list.append (m) else: Print (" Bullet count on current screen: %d"%len(maingame.bullet_list))Copy the code