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How to use python to make gluttonous snake adventure, many novices are not very clear about this, in order to help you solve this problem, the following editor will explain for you in detail, people with this need can come to learn, I hope you can gain something.

Introduction

Gluttonous snake, everyone should have played. When I first came into contact with gluttonous snakes, it was my father's digital mobile phone. If I got good test results, I would get some small rewards, and playing mobile games must be in the first place among them. after all, children naturally like it.

We all had a lot of fun at that time. Today, we use Python to program a gluttonous snake game

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1. Two main classes (snakes and cubes) will be used.

# Snake Tutorial Python import mathimport randomimport pygameimport tkinter as tkfrom tkinter import messagebox class cube (object): rows = 20w = 500def _ init__ (self,start,dirnx=1,dirny=0,color=): pass def move (self, dirnx, dirny): pass def draw (self, surface, eyes=False): pass class snake (object): def _ init__ (self, color) Pos): pass def move (self): pass def reset (self, pos): pass def addCube (self): pass def draw (self, surface): pass def drawGrid (w, rows, surface): pass def redrawWindow (surface): pass def randomSnack (rows, item): pass def message_box (subject Content): pass def main (): pass main ()

two。 Create a game cycle:

In all games, we have a cycle called "main cycle" or "game cycle". The loop will continue to run until the game exits. It is mainly responsible for checking events and calling functions and methods based on those events.

We will be in the main () function. Declare some variables at the top of the function, and then enter the while loop, which will represent our game loop.

Def main (): global width, rows, s width = 500 # Width of our screen height = 500 # Height of our screen rows = 20 # Amount of rows win = pygame.display.set_mode ((width, height)) # Creates our screen object s = snake (10 Creates a snake object which we will code later clock 10) # Creates a snake object which we will code later clock = pygame.time.Clock () # creating a clock object flag = True # STARTING MAIN LOOP while flag: pygame.time.delay (50) # This will delay the game so it doesn't run too quickly clock.tick (10) # Will ensure our game runs at 10 FPS redrawWindow (win) # This will refresh our screen

3. Update screen: in general, it is a good practice to draw all objects in one function or method. We will use the redraw window function to update the display. We call this function every frame in the game loop. We will add more to this function later. Now, however, we will simply draw gridlines.

Def redrawWindow (surface): surface.fill ((0mem0je 0)) # Fills the screen with black drawGrid (surface) # Will draw our grid lines pygame.display.update () # Updates the screen

4. Draw the mesh: the lines representing the 20x20 mesh will now be drawn.

Def drawGrid (w, rows, surface): sizeBtwn = w / / rows # Gives us the distance between the lines x = 0 # Keeps track of the current x y = 0 # Keeps track of the current y for lin range (rows): # We will draw one vertical and one horizontal line each loop x = x + sizeBtwn y = y + sizeBtwn pygame.draw.line (surface, (255255255), (XMagne 0), (XMagne w)) pygame.draw.line (surface) (255255255), (0), (0), (w))

5. Now when we run the program, we can see the grid lines drawn.

6. Start making gluttonous snakes: the snake object will contain a list of cubes that represent the snake's body. We will store these cubes in a list called body, which will be a class variable. We will also have a class variable named turns. To start snakes, add a class variable to the _ _ init__ () method.

Class snake (object): body = [] turns = {} def _ init__ (self, color, pos): self.color = color self.head = cube (pos) # The head will be the front of the snake self.body.append (self.head) # We will add head (which is a cube object) # to our body list # These will represent the direction our snake is moving self.dirnx = 0 self.dirny = 1

7. The most complicated part of the game is flipping the snake. We need to remember where and in which direction we turned our snakes so that when the cube behind the head reached that position, we could also turn them around. This is why whenever we turn, we add the position of the head to the steering dictionary, where the value is the direction we turn. In this way, when the other cubes reach this position, we will know how to rotate them.

Class snake (object):... Def move (self): for event in pygame.event.get (): if event.type = = pygame.QUIT: pygame.quit () keys = pygame.key.get_pressed () for key in keys: if Keys [pygame.K _ LEFT]: self.dirnx =-1 Self.dirny = 0 self.turns [self.head.pos [:]] = [self.dirnx Self.dirny] elif Keys [pygame.K _ RIGHT]: self.dirnx = 1 self.dirny = 0 self.turns [self.head.pos [:]] = [self.dirnx Self.dirny] elif Keys [pygame.K _ UP]: self.dirnx = 0 self.dirny =-1 self.turns [self.head.pos [:]] = [self.dirnx Self.dirny] elif Keys [pygame.K _ DOWN]: self.dirnx = 0 self.dirny = 1 self.turns [self.head.pos [:]] = [self.dirnx, self.dirny] for I C in enumerate (self.body): # Loop through every cube in our body p = c.pos [:] # This stores the cubes position on the grid if p in self.turns: # If the cubes current position is one where we turned turn = self.turns [p] # Get the direction we should turn c.move (turn [0] Turn [1]) # Move our cube in that direction if i = = len (self.body)-1: # If this is the last cube in our body remove the turn from the dict self.turns.pop (p) else: # If we are not turning the cube # If the cube reaches the edge of the screen we will make it appear on the opposite side if c. Dirnx =-1 and c.pos [0] = c.rows-1: c.pos = (0 C.pos [1]) elif c.dirny = = 1 and c.pos [1] > = c.rows-1: c.pos = (c.pos [0], 0) elif c.dirny =-1 and c.pos [1]

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