Continue juejin… cn/post / 702207… Code update of
First, do evaluation after elimination
In the previous article, we evaluated the position of the block and the void that came out after the block fell, but these evaluations were not calculated for elimination, so that the robot now does not consider elimination that leaves no void at all, such as the one below.
def do_clear(self):
for i in range(self.rows-1,-1,-1):
if sum(self.cols*i:self.cols*(i+1))==self.cols:
self.matrix[self.cols:self.cols*(i+1)]=self.matrix[0:self.cols*i]
Copy the codeThen add a line after clone_matrix.fill_block(center_shape, xdiff=xdiff, ydiff=max_yindex)
clone_matrix.do_clear()
Copy the code
Second, consider getting a higher score when eliminating
We add a clear_num to the do_clear function of the Matrix to calculate how many rows are eliminated
def do_clear(self):
clear_num = 0
for i in range(self.rows-1,-1,-1):
if sum(self.data[self.cols*i:self.cols*(i+1)])==self.cols:
self.data[self.cols:self.cols*(i+1)]=self.data[0:self.cols*i]
clear_num+=1
return clear_num
Copy the codeAdd two lines like this to the calculation
clear_num=clone_matrix.do_clear()
score += clear_num * 5
Copy the codeIn this way, each additional elimination line will get an extra 5 points, which will motivate the robot to find a better elimination solution in a single elimination.
3. Avoid packing near empty columns
First of all, we can think of the definition of empty column, as shown in the figure below, the position of 1 cannot be considered as a complete empty column, because there are two high Spaces on the right of the column, and the chance of saving is much greater than that of the position of 2. Both sides of 2 have already been raised by 3 Spaces, and if it goes on like this, we have to wait for a long bar.
def get_empty_col(self):
miny_arr=[]
for x in range(self.cols):
miny=19
for y in range(self.rows):
miny=y
if self.get_val(x,y) == 1:break
miny_arr.append(miny)
empty_arr=[]
if miny_arr[1] - miny_arr[0] > 2: empty_arr.append((self.cols,miny_arr[1] - miny_arr[0]))
if miny_arr[self.cols-2] - miny_arr[self.cols-1] > 2: empty_arr.append((miny_arr[self.cols-2] - miny_arr[self.cols-1],self.cols))
for x in range(1,self.cols-1):
if miny_arr[x-1]-miny_arr[x]>2 or miny_arr[x+1]-miny_arr[x]>2: empty_arr.append((miny_arr[x-1]-miny_arr[x],miny_arr[x+1]-miny_arr[x]))
return empty_arr
Copy the codeAdd get_cost_of_emptycol to AIPlayer
def get_cost_of_emptycol(self, empty_arr):
cost = 0
for l,r in empty_arr:
if l>2 and r>2: cost += (l+r)*2
elif l>2: cost += l
else: cost += r
return cost
Copy the codeAdd two lines where the score is calculated
empty_arr = clone_matrix.get_empty_col()
score -= self.get_cost_of_emptycol(empty_arr)
Copy the codeNow that the robot is better, it can no longer play gameover when there is no bad situation
Four, has become a void above the location to avoid
Such as below
def get_block_above_hole(self):
blocks=0
for x in range(0,self.cols):
for y in range(1,self.rows):
if self.get_val(x,y) == 0 and self.get_val(x,y-1) == 1:
blocks += sum(self.data[x:(y*self.cols+x):self.cols])
return blocks
Copy the codeLet’s add another line where we calculate the score
score -= clone_matrix.get_block_above_hole()
Copy the codeThe robot will then consider having as few squares above the void as possible. Attached is the current complete procedure.
# -*- coding=utf-8 -*-
import random
import pygame
from pygame.locals import KEYDOWN,K_LEFT,K_RIGHT,K_UP,K_DOWN,K_SPACE
import pickle,os
ROW_COUNT=20
COL_COUNT=10
SCORE_MAP=(100,300,800,1600)
class Matrix(object):
rows = 0
cols = 0
data = []
def __init__(self, rows, cols, data=None):
self.rows = rows
self.cols = cols
if data is None: data = [0 for i in range(rows*cols)]
self.data = data
def set_val(self, x, y, val):
self.data[y*self.cols+x] = val
def get_val(self, x, y):
return self.data[y*self.cols+x]
def cross_block(self, rect_arr, xdiff=0, ydiff=0):
for x,y in rect_arr:
#if x+xdiff>=0 and x+xdiff<self.cols and y+ydiff>=0 and y+ydiff<self.rows:
if self.get_val(x+xdiff,y+ydiff) == 1: return True
return False
def get_block_above_hole(self):
blocks=0
for x in range(0,self.cols):
for y in range(1,self.rows):
if self.get_val(x,y) == 0 and self.get_val(x,y-1) == 1:
blocks += sum(self.data[x:(y*self.cols+x):self.cols])
return blocks
def get_hole_number(self):
hole_num=0
for x in range(0,self.cols):
for y in range(1,self.rows):
if self.get_val(x,y) == 0 and self.get_val(x,y-1) == 1:
hole_num+=1
return hole_num
def clone(self):
clone_matrix=Matrix(self.rows, self.cols, list(self.data))
return clone_matrix
def fill_block(self, rect_arr, xdiff=0, ydiff=0):
for x,y in rect_arr:
self.set_val(x+xdiff,y+ydiff, 1)
def do_clear(self):
clear_num = 0
for i in range(self.rows-1,-1,-1):
if sum(self.data[self.cols*i:self.cols*(i+1)])==self.cols:
self.data[self.cols:self.cols*(i+1)]=self.data[0:self.cols*i]
clear_num+=1
return clear_num
def get_empty_col(self):
miny_arr=[]
for x in range(self.cols):
miny=19
for y in range(self.rows):
miny=y
if self.get_val(x,y) == 1:break
miny_arr.append(miny)
empty_arr=[]
if miny_arr[1] - miny_arr[0] > 2: empty_arr.append((self.cols,miny_arr[1] - miny_arr[0]))
if miny_arr[self.cols-2] - miny_arr[self.cols-1] > 2: empty_arr.append((miny_arr[self.cols-2] - miny_arr[self.cols-1],self.cols))
for x in range(1,self.cols-1):
if miny_arr[x-1]-miny_arr[x]>2 or miny_arr[x+1]-miny_arr[x]>2: empty_arr.append((miny_arr[x-1]-miny_arr[x],miny_arr[x+1]-miny_arr[x]))
return empty_arr
def print_matrix(self):
for i in range(self.rows):
print self.data[self.cols*i:self.cols*(i+1)]
class Player(object):
auto_mode=False
def __init__(self):
pass
def run(self, panel):
pass
class HumanPlayer(Player):
def __init__(self):
super(Player, self).__init__()
class AIPlayer(Player):
cal_block_id=-1
ctl_arr=[] # control arr, 1＝change、2＝left、3＝right、4＝down
auto_mode=True
ai_diff_ticks = 100 #timespan between two controls
def __init__(self):
super(Player, self).__init__()
self.ctl_ticks = pygame.time.get_ticks() + self.ai_diff_ticks
def get_cost_of_emptycol(self, empty_arr):
cost = 0
for l,r in empty_arr:
if l>2 and r>2: cost += (l+r)*2
elif l>2: cost += l
else: cost += r
return cost
def cal_best_arr(self, panel):
matrix = panel.get_rect_matrix()
cur_shape_id = panel.moving_block.shape_id
shape_num = panel.moving_block.shape_num
max_score = -10000
best_arr = []
for i in range(shape_num):
tmp_shape_id = cur_shape_id + i
if tmp_shape_id >= shape_num: tmp_shape_id = tmp_shape_id % shape_num
tmp_shape = panel.moving_block.get_shape(sid=tmp_shape_id)
center_shape = []
for x,y in tmp_shape: center_shape.append((x+COL_COUNT/2-2,y-2))
minx = COL_COUNT
maxx = 0
miny = ROW_COUNT
maxy = -2
for x,y in center_shape:
if x<minx: minx = x
if x>maxx: maxx = x
if y<miny: miny = y
if y>maxy: maxy = y
for xdiff in range(-minx,COL_COUNT-maxx):
arr = [1 for _ in range(i)]
if xdiff < 0: [arr.append(2) for _ in range(-xdiff)]
if xdiff > 0: [arr.append(3) for _ in range(xdiff)]
max_yindex = -miny
for yindex in range(-miny, ROW_COUNT-maxy):
if matrix.cross_block(center_shape, xdiff=xdiff, ydiff=yindex):
break
max_yindex = yindex
score = sum([y+max_yindex for x,y in center_shape])
# clone matrix and fill new block to calculate holes
clone_matrix = matrix.clone()
clone_matrix.fill_block(center_shape, xdiff=xdiff, ydiff=max_yindex)
clear_num = clone_matrix.do_clear()
score -= clone_matrix.get_block_above_hole()
empty_arr = clone_matrix.get_empty_col()
score -= self.get_cost_of_emptycol(empty_arr)
score += clear_num * 5
score -= clone_matrix.get_hole_number() * COL_COUNT
if score > max_score:
max_score = score
best_arr = arr
self.ctl_arr = best_arr+[4]
def run(self, panel):
if pygame.time.get_ticks() < self.ctl_ticks: return
self.ctl_ticks += self.ai_diff_ticks
if panel.block_id == self.cal_block_id: # block_id not change
if len(self.ctl_arr)>0:
ctl = self.ctl_arr.pop(0)
if ctl == 1: panel.change_block()
if ctl == 2: panel.control_block(-1,0)
if ctl == 3: panel.control_block(1,0)
if ctl == 4:
flag = panel.move_block()
while flag==1:
flag = panel.move_block()
else: # block_id is new
self.cal_block_id = panel.block_id
self.cal_best_arr(panel)
class RectInfo(object):
def __init__(self, x, y, color):
self.x = x
self.y = y
self.color = color
class HintBox(object):
next_block=None
def __init__(self, bg, block_size, position):
self._bg=bg;
self._x,self._y,self._width,self._height=position
self._block_size=block_size
self._bgcolor=[0,0,0]
def take_block(self):
block = self.next_block
if block is None: # make first block
block = create_block()
self.next_block = create_block()
return block
def paint(self):
mid_x=self._x+self._width/2
pygame.draw.line(self._bg,self._bgcolor,[mid_x,self._y],[mid_x,self._y+self._height],self._width)
bz=self._block_size
if self.next_block:
arr = self.next_block.get_rect_arr()
minx,miny=arr[0]
maxx,maxy=arr[0]
for x,y in arr:
if x<minx: minx=x
if x>maxx: maxx=x
if y<miny: miny=y
if y>maxy: maxy=y
w=(maxx-minx)*bz
h=(maxy-miny)*bz
cx=self._width/2-w/2-minx*bz-bz/2
cy=self._height/2-h/2-miny*bz-bz/2
for rect in arr:
x,y=rect
pygame.draw.line(self._bg,self.next_block.color,[self._x+x*bz+cx+bz/2,self._y+cy+y*bz],[self._x+x*bz+cx+bz/2,self._y+cy+(y+1)*bz],bz)
pygame.draw.rect(self._bg,[255,255,255],[self._x+x*bz+cx,self._y+y*bz+cy,bz+1,bz+1],1)
class ScoreBox(object):
total_score = 0
high_score = 0
db_file = 'tetris.db'
def __init__(self, bg, block_size, position):
self._bg=bg;
self._x,self._y,self._width,self._height=position
self._block_size=block_size
self._bgcolor=[0,0,0]
if os.path.exists(self.db_file): self.high_score = pickle.load(open(self.db_file,'rb'))
def paint(self):
myfont = pygame.font.Font(None,36)
white = 255,255,255
textImage = myfont.render('High: %06d'%(self.high_score), True, white)
self._bg.blit(textImage, (self._x,self._y))
textImage = myfont.render('Score:%06d'%(self.total_score), True, white)
self._bg.blit(textImage, (self._x,self._y+40))
def add_score(self, score):
self.total_score += score
if self.total_score > self.high_score:
self.high_score=self.total_score
pickle.dump(self.high_score, open(self.db_file,'wb+'))
class Panel(object):
block_id=0
rect_arr=[]
moving_block=None
hint_box=None
score_box=None
def __init__(self,bg, block_size, position):
self._bg=bg;
self._x,self._y,self._width,self._height=position
self._block_size=block_size
self._bgcolor=[0,0,0]
def get_rect_matrix(self):
matrix = Matrix(ROW_COUNT, COL_COUNT)
for rect_info in self.rect_arr:
matrix.set_val(rect_info.x, rect_info.y, 1)
return matrix
def add_block(self,block):
for x,y in block.get_rect_arr():
self.rect_arr.append(RectInfo(x,y, block.color))
def create_move_block(self):
self.block_id+=1
block = self.hint_box.take_block()
#block = create_block()
block.move(COL_COUNT/2-2,-2) # move block to top center
self.moving_block=block
def check_overlap(self, diffx, diffy, check_arr=None):
if check_arr is None: check_arr = self.moving_block.get_rect_arr()
for x,y in check_arr:
for rect_info in self.rect_arr:
if x+diffx==rect_info.x and y+diffy==rect_info.y:
return True
return False
def control_block(self, diffx, diffy):
if self.moving_block.can_move(diffx,diffy) and not self.check_overlap(diffx, diffy):
self.moving_block.move(diffx,diffy)
def change_block(self):
if self.moving_block:
new_arr = self.moving_block.change()
if new_arr and not self.check_overlap(0, 0, check_arr=new_arr):
self.moving_block.rect_arr=new_arr
def move_block(self):
if self.moving_block is None: create_move_block()
if self.moving_block.can_move(0,1) and not self.check_overlap(0,1):
self.moving_block.move(0,1)
return 1
else:
self.add_block(self.moving_block)
self.check_clear()
for rect_info in self.rect_arr:
if rect_info.y<0: return 9 # gameover
self.create_move_block()
return 2
def check_clear(self):
tmp_arr = [[] for i in range(20)]
for rect_info in self.rect_arr:
if rect_info.y<0: return
tmp_arr[rect_info.y].append(rect_info)
clear_num=0
clear_lines=set([])
y_clear_diff_arr=[[] for i in range(20)]
for y in range(19,-1,-1):
if len(tmp_arr[y])==10:
clear_lines.add(y)
clear_num += 1
y_clear_diff_arr[y] = clear_num
if clear_num>0:
new_arr=[]
for y in range(19,-1,-1):
if y in clear_lines: continue
tmp_row = tmp_arr[y]
y_clear_diff=y_clear_diff_arr[y]
for rect_info in tmp_row:
#new_arr.append([x,y+y_clear_diff])
new_arr.append(RectInfo(rect_info.x, rect_info.y+y_clear_diff, rect_info.color))
self.rect_arr = new_arr
score = SCORE_MAP[clear_num-1]
self.score_box.add_score(score)
def paint(self):
mid_x=self._x+self._width/2
pygame.draw.line(self._bg,self._bgcolor,[mid_x,self._y],[mid_x,self._y+self._height],self._width) # 用一个粗线段来填充背景
bz=self._block_size
for rect_info in self.rect_arr:
x=rect_info.x
y=rect_info.y
pygame.draw.line(self._bg,rect_info.color,[self._x+x*bz+bz/2,self._y+y*bz],[self._x+x*bz+bz/2,self._y+(y+1)*bz],bz)
pygame.draw.rect(self._bg,[255,255,255],[self._x+x*bz,self._y+y*bz,bz+1,bz+1],1)
if self.move_block:
for rect in self.moving_block.get_rect_arr():
x,y=rect
pygame.draw.line(self._bg,self.moving_block.color,[self._x+x*bz+bz/2,self._y+y*bz],[self._x+x*bz+bz/2,self._y+(y+1)*bz],bz)
pygame.draw.rect(self._bg,[255,255,255],[self._x+x*bz,self._y+y*bz,bz+1,bz+1],1)
class Block(object):
sx=0
sy=0
def __init__(self):
self.rect_arr=[]
def get_rect_arr(self):
return self.rect_arr
def move(self,xdiff,ydiff):
self.sx+=xdiff
self.sy+=ydiff
self.new_rect_arr=[]
for x,y in self.rect_arr:
self.new_rect_arr.append((x+xdiff,y+ydiff))
self.rect_arr=self.new_rect_arr
def can_move(self,xdiff,ydiff):
for x,y in self.rect_arr:
if y+ydiff>=20: return False
if x+xdiff<0 or x+xdiff>=10: return False
return True
def change(self):
self.shape_id+=1
if self.shape_id >= self.shape_num:
self.shape_id=0
arr = self.get_shape()
new_arr = []
for x,y in arr:
if x+self.sx<0 or x+self.sx>=10:
self.shape_id -= 1
if self.shape_id < 0: self.shape_id = self.shape_num - 1
return None
new_arr.append([x+self.sx,y+self.sy])
return new_arr
class LongBlock(Block):
shape_id=0
shape_num=2
def __init__(self, n=None):
super(LongBlock, self).__init__()
if n is None: n=random.randint(0,1)
self.shape_id=n
self.rect_arr=self.get_shape()
self.color=(50,180,50)
def get_shape(self, sid=None):
if sid is None: sid = self.shape_id
return [(1,0),(1,1),(1,2),(1,3)] if sid==0 else [(0,2),(1,2),(2,2),(3,2)]
class SquareBlock(Block):
shape_id=0
shape_num=1
def __init__(self, n=None):
super(SquareBlock, self).__init__()
self.rect_arr=self.get_shape()
self.color=(0,0,255)
def get_shape(self, sid=None):
if sid is None: sid = self.shape_id
return [(1,1),(1,2),(2,1),(2,2)]
class ZBlock(Block):
shape_id=0
shape_num=2
def __init__(self, n=None):
super(ZBlock, self).__init__()
if n is None: n=random.randint(0,1)
self.shape_id=n
self.rect_arr=self.get_shape()
self.color=(30,200,200)
def get_shape(self, sid=None):
if sid is None: sid = self.shape_id
return [(2,0),(2,1),(1,1),(1,2)] if sid==0 else [(0,1),(1,1),(1,2),(2,2)]
class SBlock(Block):
shape_id=0
shape_num=2
def __init__(self, n=None):
super(SBlock, self).__init__()
if n is None: n=random.randint(0,1)
self.shape_id=n
self.rect_arr=self.get_shape()
self.color=(255,30,255)
def get_shape(self, sid=None):
if sid is None: sid = self.shape_id
return [(1,0),(1,1),(2,1),(2,2)] if sid==0 else [(0,2),(1,2),(1,1),(2,1)]
class LBlock(Block):
shape_id=0
shape_num=4
def __init__(self, n=None):
super(LBlock, self).__init__()
if n is None: n=random.randint(0,3)
self.shape_id=n
self.rect_arr=self.get_shape()
self.color=(200,200,30)
def get_shape(self, sid=None):
if sid is None: sid = self.shape_id
if sid==0: return [(1,0),(1,1),(1,2),(2,2)]
elif sid==1: return [(0,1),(1,1),(2,1),(0,2)]
elif sid==2: return [(0,0),(1,0),(1,1),(1,2)]
else: return [(0,1),(1,1),(2,1),(2,0)]
class JBlock(Block):
shape_id=0
shape_num=4
def __init__(self, n=None):
super(JBlock, self).__init__()
if n is None: n=random.randint(0,3)
self.shape_id=n
self.rect_arr=self.get_shape()
self.color=(200,100,0)
def get_shape(self, sid=None):
if sid is None: sid = self.shape_id
if sid==0: return [(1,0),(1,1),(1,2),(0,2)]
elif sid==1: return [(0,1),(1,1),(2,1),(0,0)]
elif sid==2: return [(2,0),(1,0),(1,1),(1,2)]
else: return [(0,1),(1,1),(2,1),(2,2)]
class TBlock(Block):
shape_id=0
shape_num=4
def __init__(self, n=None):
super(TBlock, self).__init__()
if n is None: n=random.randint(0,3)
self.shape_id=n
self.rect_arr=self.get_shape()
self.color=(255,0,0)
def get_shape(self, sid=None):
if sid is None: sid = self.shape_id
if sid==0: return [(0,1),(1,1),(2,1),(1,2)]
elif sid==1: return [(1,0),(1,1),(1,2),(0,1)]
elif sid==2: return [(0,1),(1,1),(2,1),(1,0)]
else: return [(1,0),(1,1),(1,2),(2,1)]
def create_block():
n = random.randint(0,18)
if n==0: return SquareBlock(n=0)
elif n==1 or n==2: return LongBlock(n=n-1)
elif n==3 or n==4: return ZBlock(n=n-3)
elif n==5 or n==6: return SBlock(n=n-5)
elif n>=7 and n<=10: return LBlock(n=n-7)
elif n>=11 and n<=14: return JBlock(n=n-11)
else: return TBlock(n=n-15)
def run():
pygame.init()
space=30
main_block_size=30
main_panel_width=main_block_size*COL_COUNT
main_panel_height=main_block_size*ROW_COUNT
screencaption = pygame.display.set_caption('Tetris')
screen = pygame.display.set_mode((main_panel_width+160+space*3,main_panel_height+space*2))
main_panel=Panel(screen,main_block_size,[space,space,main_panel_width,main_panel_height])
hint_box=HintBox(screen,main_block_size,[main_panel_width+space+space,space,160,160])
score_box=ScoreBox(screen,main_block_size,[main_panel_width+space+space,160+space*2,160,160])
main_panel.hint_box=hint_box
main_panel.score_box=score_box
pygame.key.set_repeat(200, 30)
main_panel.create_move_block()
diff_ticks = 300
ticks = pygame.time.get_ticks() + diff_ticks
player = AIPlayer()
pause=0
game_state = 1 # game status 1.normal 2.gameover
while True:
for event in pygame.event.get():
if event.type == pygame.QUIT:
pygame.quit()
exit()
if event.type == KEYDOWN:
if event.key==97: pause=1-pause # press a to pause
if event.key==112: # for debug where press p
main_panel.get_rect_matrix().print_matrix()
if player.auto_mode:continue
if event.type == KEYDOWN:
if event.key == K_LEFT: main_panel.control_block(-1,0)
if event.key == K_RIGHT: main_panel.control_block(1,0)
if event.key == K_UP: main_panel.change_block()
if event.key == K_DOWN: main_panel.control_block(0,1)
if event.key == K_SPACE:
flag = main_panel.move_block()
while flag==1:
flag = main_panel.move_block()
if flag == 9: game_state = 2
screen.fill((100,100,100)) # make background gray
main_panel.paint()
hint_box.paint()
score_box.paint()
if game_state == 2:
myfont = pygame.font.Font(None,30)
white = 255,255,255
textImage = myfont.render("Game over", True, white)
screen.blit(textImage, (160,190))
pygame.display.update()
if pause==1: continue
if game_state == 1: player.run(main_panel)
if game_state == 1 and pygame.time.get_ticks() >= ticks:
ticks+=diff_ticks
if main_panel.move_block()==9: game_state = 2 # gameover
run()
Copy the codeThis article will stop here and continue to optimize in the next chapter.