I am trying to make a tetris game, but I don't understand this error? It seems to be line 34:
self.active_blk.move(-direction) Here is my code:
import pygame import random from Block import Block class Stage(): def __init__(self,cell_size,h_cells,v_cells): self.cell_size=cell_size self.width=h_cells self.height=v_cells self.blocks=[] self.active_blk=self.add_block() def add_block(self): blk=Block(0,self.cell_size,(random.randint(0,255),random.randint(0,255),random.randint(0,255))) self.blocks.append(blk) return blk def move_block(self,direction): self.active_blk.move(direction) obstacle=False for cell in self.active_blk.cells: if(cell.y>=self.height or cell.x<0 or cell.x>= self.width): obstacle=True for blk in self.blocks: if(blk is self.active_blk): continue if(blk.collide_with(self.active_blk)): obstacle=True break; if(obstacle): self.active_blk.move(-direction) def draw(self,screen): screen.fill((0,0,0)) for blk in self.blocks: blk.draw(screen) 1 Answer
Your direction argument is not a number than can be negated. Rather, it's a tuple of two numbers. Tuples are not numeric types, so even though its contents can be negated, the tuple itself cannot be. You need to negate the pieces yourself, with (-direction[0], -direction[1]).
