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Commitbb457b4

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add platformer game tutorial
1 parent9cfb9b7 commitbb457b4

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‎README.md

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importpygame
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fromsettingsimportHEIGHT,WIDTH
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pygame.font.init()
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classGame:
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def__init__(self,screen):
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self.screen=screen
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self.font=pygame.font.SysFont("impact",70)
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self.message_color=pygame.Color("darkorange")
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# if player ran out of life or fell below the platform
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def_game_lose(self,player):
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player.game_over=True
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message=self.font.render('You Lose...',True,self.message_color)
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self.screen.blit(message,(WIDTH//3+70,70))
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# if player reach the goal
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def_game_win(self,player):
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player.game_over=True
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player.win=True
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message=self.font.render('You Win!!',True,self.message_color)
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self.screen.blit(message,(WIDTH//3,70))
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# checks if the game is over or not, and if win or lose
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defgame_state(self,player,goal):
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ifplayer.life<=0orplayer.rect.y>=HEIGHT:
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self._game_lose(player)
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elifplayer.rect.colliderect(goal.rect):
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self._game_win(player)
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else:
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None
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defshow_life(self,player):
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life_size=30
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img_path="assets/life/life.png"
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life_image=pygame.image.load(img_path)
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life_image=pygame.transform.scale(life_image, (life_size,life_size))
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# life_rect = life_image.get_rect(topleft = pos)
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indent=0
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forlifeinrange(player.life):
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indent+=life_size
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self.screen.blit(life_image, (indent,life_size))
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importpygame
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classGoal(pygame.sprite.Sprite):
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def__init__(self,pos,size):
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super().__init__()
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img_path='assets/goal/gate.png'
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self.image=pygame.image.load(img_path)
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self.image=pygame.transform.scale(self.image, (size,size))
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self.rect=self.image.get_rect(topleft=pos)
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# update object position due to world scroll
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defupdate(self,x_shift):
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self.rect.x+=x_shift
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importpygame,sys
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fromsettingsimport*
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fromworldimportWorld
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pygame.init()
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screen=pygame.display.set_mode((WIDTH,HEIGHT))
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pygame.display.set_caption("Platformer")
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classPlatformer:
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def__init__(self,screen,width,height):
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self.screen=screen
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self.clock=pygame.time.Clock()
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self.player_event=False
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self.bg_img=pygame.image.load('assets/terrain/bg.jpg')
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self.bg_img=pygame.transform.scale(self.bg_img, (width,height))
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defmain(self):
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world=World(world_map,self.screen)
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whileTrue:
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self.screen.blit(self.bg_img, (0,0))
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foreventinpygame.event.get():
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ifevent.type==pygame.QUIT:
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pygame.quit()
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sys.exit()
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elifevent.type==pygame.KEYDOWN:
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ifevent.key==pygame.K_LEFT:
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self.player_event="left"
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ifevent.key==pygame.K_RIGHT:
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self.player_event="right"
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ifevent.key==pygame.K_SPACE:
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self.player_event="space"
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elifevent.type==pygame.KEYUP:
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self.player_event=False
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world.update(self.player_event)
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pygame.display.update()
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self.clock.tick(60)
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if__name__=="__main__":
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play=Platformer(screen,WIDTH,HEIGHT)
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play.main()
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importpygame
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fromsupportimportimport_sprite
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classPlayer(pygame.sprite.Sprite):
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def__init__(self,pos):
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super().__init__()
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self._import_character_assets()
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self.frame_index=0
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self.animation_speed=0.15
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self.image=self.animations["idle"][self.frame_index]
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self.rect=self.image.get_rect(topleft=pos)
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self.mask=pygame.mask.from_surface(self.image)
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# player movement
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self.direction=pygame.math.Vector2(0,0)
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self.speed=5
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self.jump_move=-16
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# player status
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self.life=5
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self.game_over=False
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self.win=False
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self.status="idle"
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self.facing_right=True
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self.on_ground=False
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self.on_ceiling=False
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self.on_left=False
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self.on_right=False
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# gets all the image needed for animating specific player action
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def_import_character_assets(self):
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character_path="assets/player/"
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self.animations= {
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"idle": [],
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"walk": [],
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"jump": [],
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"fall": [],
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"lose": [],
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"win": []
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}
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foranimationinself.animations.keys():
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full_path=character_path+animation
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self.animations[animation]=import_sprite(full_path)
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# animates the player actions
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def_animate(self):
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animation=self.animations[self.status]
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# loop over frame index
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self.frame_index+=self.animation_speed
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ifself.frame_index>=len(animation):
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self.frame_index=0
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image=animation[int(self.frame_index)]
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image=pygame.transform.scale(image, (35,50))
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ifself.facing_right:
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self.image=image
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else:
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flipped_image=pygame.transform.flip(image,True,False)
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self.image=flipped_image
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# set the rect
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ifself.on_groundandself.on_right:
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self.rect=self.image.get_rect(bottomright=self.rect.bottomright)
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elifself.on_groundandself.on_left:
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self.rect=self.image.get_rect(bottomleft=self.rect.bottomleft)
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elifself.on_ground:
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self.rect=self.image.get_rect(midbottom=self.rect.midbottom)
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elifself.on_ceilingandself.on_right:
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self.rect=self.image.get_rect(topright=self.rect.topright)
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elifself.on_ceilingandself.on_left:
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self.rect=self.image.get_rect(bottomleft=self.rect.topleft)
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elifself.on_ceiling:
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self.rect=self.image.get_rect(midtop=self.rect.midtop)
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# checks if the player is moving towards left or right or not moving
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def_get_input(self,player_event):
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ifplayer_event!=False:
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ifplayer_event=="right":
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self.direction.x=1
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self.facing_right=True
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elifplayer_event=="left":
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self.direction.x=-1
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self.facing_right=False
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else:
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self.direction.x=0
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def_jump(self):
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self.direction.y=self.jump_move
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# identifies player action
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def_get_status(self):
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ifself.direction.y<0:
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self.status="jump"
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elifself.direction.y>1:
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self.status="fall"
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elifself.direction.x!=0:
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self.status="walk"
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else:
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self.status="idle"
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# update the player's state
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defupdate(self,player_event):
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self._get_status()
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ifself.life>0andnotself.game_over:
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ifplayer_event=="space"andself.on_ground:
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self._jump()
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else:
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self._get_input(player_event)
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elifself.game_overandself.win:
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self.direction.x=0
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self.status="win"
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else:
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self.direction.x=0
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self.status="lose"
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self._animate()
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pygame
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world_map= [
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' ',
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' ',
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' t t ',
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' X XXXXXXXXXs XX X ',
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' tXXXt XX XX XXXX tt XX ',
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' XX XX XXXXX ',
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' Xt t t t X G ',
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' XXXXXX XXXXs XXXXXXXXXXX XX tt t XXX',
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' P XX X XX X X XXXt X XX XX XXX XXXXXXXXs XXXXXX ',
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'XXXXXXX X X X X XXXXXXXXX XX XX XXX XX XX XXXXXXX X ',
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]
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tile_size=50
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WIDTH,HEIGHT=1000,len(world_map)*tile_size
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fromosimportwalk
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importpygame
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defimport_sprite(path):
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surface_list= []
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for_,__,img_fileinwalk(path):
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forimageinimg_file:
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full_path=f"{path}/{image}"
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img_surface=pygame.image.load(full_path).convert_alpha()
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surface_list.append(img_surface)
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returnsurface_list
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importpygame
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classTile(pygame.sprite.Sprite):
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def__init__(self,pos,size):
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super().__init__()
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img_path='assets/terrain/stone.jpg'
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self.image=pygame.image.load(img_path)
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self.image=pygame.transform.scale(self.image, (size,size))
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self.rect=self.image.get_rect(topleft=pos)
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# update object position due to world scroll
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defupdate(self,x_shift):
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self.rect.x+=x_shift
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importpygame
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fromsupportimportimport_sprite
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classTrap(pygame.sprite.Sprite):
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def__init__(self,pos,size):
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super().__init__()
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self.blade_img=import_sprite("assets/trap/blade")
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self.frame_index=0
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self.animation_delay=3
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self.image=self.blade_img[self.frame_index]
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self.image=pygame.transform.scale(self.image, (size,size))
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self.mask=pygame.mask.from_surface(self.image)
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self.rect=self.image.get_rect(topleft=pos)
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# adds the spinning effect to the Blade trap
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def_animate(self):
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sprites=self.blade_img
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sprite_index= (self.frame_index//self.animation_delay)%len(sprites)
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self.image=sprites[sprite_index]
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self.frame_index+=1
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self.rect=self.image.get_rect(topleft=(self.rect.x,self.rect.y))
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self.mask=pygame.mask.from_surface(self.image)
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ifself.frame_index//self.animation_delay>len(sprites):
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self.frame_index=0
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# update object position due to world scroll
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defupdate(self,x_shift):
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self._animate()
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self.rect.x+=x_shift

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