hanyeah

学习python编程，在新东方少儿编程官网的自由创作平台做的一些作品。

可以在线运行，效果如下(在新页面中打开链接):

代码如下（用到平台自定义的xdf库）:

from xdf import *

L = 32
SQRT3 = 1.732
CW = L * SQRT3
CH = L * 2
M = int(1024 / CH) - 1
N = int(768 / CW)
ox = (1024 - CH * M) * 0.5 + 0.001
oy = (768 - CW * N) * 0.5 + 0.001

def ij2xy(i, j):
    if j % 2 == 0:
        return ((j + 0.5) * CW + ox, (i + 0.5) * CH + oy)
    return ((j + 0.5) * CW + ox, (i + 1.0) * CH + oy)

def xy2ij(x, y):
    i0 = int((y - oy) / CH) - 1
    j0 = int((x - ox) / CW) - 1
    d0 = CH * CH
    i2 = i0
    j2 = j0
    for i in range(3):
        for j in range(3):
            i1 = i0 + i
            j1 = j0 + j
            xy = ij2xy(i1, j1)
            dx = x - xy[0]
            dy = y - xy[1]
            d = dx * dx + dy * dy
            if d < d0:
                d0 = d
                i2 = i1
                j2 = j1
    return (i2, j2)


def ij2n(i, j):
    return i * N + j

def n2ij(n):
    return (n // N, n % N)

cubes = []

for i in range(M):
    for j in range(N):
        xy = ij2xy(i, j)
        cb1 = box(xy[0] - L, xy[1] - L * 0.5, CW, L, '#CCFF00')
        cb2 = box(xy[0] - L, xy[1] - L * 0.5, CW, L, '#CCFF00')
        cb3 = box(xy[0] - L, xy[1] - L * 0.5, CW, L, '#CCFF00')
        cb1.rotate(90)
        cb2.rotate(210)
        cb3.rotate(330)
        cubes.append([cb1, cb2, cb3, i, j, 0])

ci = int(M/2)
cj = int(N/2)
xy = ij2xy(ci, cj)
cat = [
    circle(xy[0], xy[1], L * 0.5, "red"),
    ci, cj
]

def tap():
    global state, cooldown
    if state == 1:
        ij = xy2ij(x, y)
        i = ij[0]
        j = ij[1]
        if i >= 0 and i < M and j >= 0 and j < N and (cat[1] != i or cat[2] != j):
            n = ij2n(i, j)
            cb = cubes[n]
            if cb[5] == 0:
                setCube(cb, 1)
                cooldown = 20
                state = 2
                checkWin()
    elif state == 3:
        reset()

state = 1
cooldown = 20
NEIGHBOR_01=[[-1,-1],[0,-1],
             [-1,0],[1,0],
             [-1,1],[0,1]]
NEIGHBOR_02=[[0,-1],[1,-1],
             [-1,0],[1,0],
             [0,1],[1,1]]

winTxt = text("You Win", 100, "red", "center")
loseTxt = text("You Lose", 100, "red", "center")

def reset():
    global state, cooldown, ci, cj
    winTxt.hide()
    loseTxt.hide()
    state = 1
    cooldown = 20
    catMoveTo(ci, cj)
    for i in range(len(cubes)):
        setCube(cubes[i], 0)
        
    mm = 0
    while mm < 6:
        mm += 1
        n0 = random(M*N - 1)
        ij = n2ij(n0)
        if cat[1] == ij[0] and cat[2] == ij[1]:
            mm -= 1
        elif cubes[n0][5] != 0:
            mm -= 1
        else:
            setCube(cubes[n0], 1)

def loop():
    global state, cooldown
    if state == 1:
        #等待点击
        pass
    elif state == 2:
        cooldown -= 1
        if cooldown == 0:
            state = 1
            catMove()

def catMove():
    ij = getPath()
    if ij[0] == -1 and ij[1] == -1:
        ij = getRandomPath()
    i = ij[0]
    j = ij[1]
    if i == cat[1] and j == cat[2]:
        win()
    else:
        catMoveTo(i, j)
        if i == 0 or i == M - 1 or j == 0 or j == N - 1:
            lose()

def catMoveTo(i, j):
    xy = ij2xy(i, j)
    cat[0].move(xy[0], xy[1])
    cat[1] = i
    cat[2] = j

def checkWin():
    i = cat[1]
    j = cat[2]
    

def win():
    global state
    state = 3
    winTxt.show()

def lose():
    global state
    state = 3
    loseTxt.show()

def setCube(cb, ty):
    cb[5] = ty
    if ty == 0:
        cb[0].change('#CCFF00')
        cb[1].change('#CCFF00')
        cb[2].change('#CCFF00')
    else:
        cb[0].change('#778B01')
        cb[1].change('#778B01')
        cb[2].change('#778B01')

def getRandomPath(): 
    i0 = cat[1]
    j0 = cat[2]
    nextI = i0
    nextJ = j0
    neighbor= NEIGHBOR_01
    if j0 % 2 != 0:
        neighbor = NEIGHBOR_02
    for i in range(len(neighbor)): 
        ii = i0 + neighbor[i][0]
        jj = j0 + neighbor[i][1]
        if ii < 0 or jj < 0 or ii >= M or jj >= N: 
            continue
        n = ij2n(ii, jj)
        cb = cubes[n]
        if cb[5] != 0:
            continue
        nextI = ii
        nextJ = jj
        break
    return (nextI, nextJ)

#寻路
def getPath():
    startP= [cat[1], cat[2], None]
    openTable=[]
    tempTable=[]
    openTable.append(startP)
    stepTable=[]
    for i in range(M):
        stepTable.append([])
        for j in range(N): 
            stepTable[i].append(0)
    exitP = [-1, -1, None]
    canMove = False
    n = 0
    
    out = True
    while(out):
        n += 1
        while(out):
            if len(openTable) == 0:
                break
            p = openTable.pop()
            neighbor = NEIGHBOR_01
            if p[1] % 2 != 0:
                neighbor = NEIGHBOR_02
            for i in range(6):
                ii = p[0] + neighbor[i][0]
                jj = p[1] + neighbor[i][1]
                if ii < 0 or jj < 0 or ii >= M or jj >= N:
                    continue
                if ii == startP[0] and jj == startP[1]:
                    continue
                if ii == cat[1] and jj == cat[2]:
                    continue
                if cubes[ij2n(ii, jj)][5] != 0:
                    continue
                if stepTable[ii][jj] != 0:
                    continue
                p1= [ii, jj, p]
                tempTable.append(p1)
                stepTable[ii][jj] = n
                canMove = True
                if ii==0 or jj==0 or ii == M - 1 or jj == N - 1: 
                    exitP = p1
                    out = False
                    break
        if len(tempTable) == 0:
            break;
        if not out:
            break;
        openTable=tempTable
        tempTable=[]
            
    if not canMove:
        #print("没有路了")
        return (cat[1], cat[2])
    if exitP[2] == None:
        #print("没有出口")
        return (-1, -1)
    #print("出口位置：", exitP)
    nextP = exitP
    while nextP[2] != startP:
        nextP = nextP[2]
    return (nextP[0], nextP[1])

reset()

也可以下载代码，本地python环境运行（用pygame封装了xdf库）。