"Player2" 无法做与 "player" 相同的事情

Question

import random

WIDTH = 800
HEIGHT = 500

background = Actor('background')
player = Actor('player')
enemy = Actor('enemy')
money = Actor('money', pos=(300, 300))
player2 = Actor('alien')
score = 0
score2 = 0
player.x = 200
player.y = 200


def draw():
    screen.clear()
    background.draw()
    player.draw()
    enemy.draw()
    money.draw()
    player2.draw()


def update():
    global score
    if keyboard.right:
        player.x = player.x + 4
    if keyboard.left:
        player.x = player.x - 4
    if keyboard.down:
        player.y = player.y + 4
    if keyboard.up:
        player.y = player.y - 4

    if player.x > WIDTH:
        player.x = WIDTH
    if player.x < 0:
        player.x = 0
    if player.y < 0:
        player.y = 0
    if player.y > HEIGHT:
        player.y = HEIGHT

    if enemy.x < player.x:
        enemy.x = enemy.x + 1
    if enemy.x > player.x:
        enemy.x = enemy.x - 1
    if enemy.y < player.y:
        enemy.y = enemy.y + 1
    if enemy.y > player.y:
        enemy.y = enemy.y - 1
    if player.colliderect(enemy):
        exit()

    if money.colliderect(player):
        money.x = random.randint(0, WIDTH)
        money.y = random.randint(0, HEIGHT)
        score = score + 1
        print ('Score:', score)

    if keyboard.d:
        player2.x = player2.x + 4
    if keyboard.a:
        player2.x = player2.x - 4
    if keyboard.s:
        player2.y = player2.y + 4
    if keyboard.w:
        player2.y = player2.y - 4
    if player.colliderect(player2):
        exit()

    if player2.x > WIDTH:
        player2.x = WIDTH
    if player2.x < 0:
        player2.x = 0
    if player2.y < 0:
        player2.y = 0
    if player2.y > HEIGHT:
        player2.y = HEIGHT

我刚刚尝试将 player2 引入到我在 MU-editor 中制作的 python 游戏中，我可以看到 player2 并移动他，但存在一些问题。敌人没有追逐玩家 2，玩家 2 无法捡到钱。我还想为player2添加一个score2变量，存储他撞到钱时的分数。

Answer 1

要取钱，你必须在playyer2和money之间添加碰撞测试：

score2 = 0

def update():
    global score, score2

    # [...]

    if money.colliderect(player2):
        money.x = random.randint(0, WIDTH)
        money.y = random.randint(0, HEIGHT)
        score2 += 1

为了追逐player或player2你必须找到离敌人较近的玩家。比较敌人到玩家的Euclidean distance方格，追击距离较近的玩家：

def update():

    dx1, dy1 = player.x - enemy.x, player.y - enemy.y
    dx2, dy2 = player2.x - enemy.x, player2.y - enemy.y
    dist1sq = dx1*dx1 + dy1*dy1
    dist2sq = dx2*dx2 + dy2*dy2 

    player_near = player if dist1sq < dist2sq else player2

    if enemy.x < player_near.x:
        enemy.x += 1
    if enemy.x > player_near.x:
        enemy.x -= 1
    if enemy.y < player_near.y:
        enemy.y += 1
    if enemy.y > player_near.y:
        enemy.y -= 1
    if player.colliderect(enemy):
        exit()
    if player2.colliderect(enemy):
        exit()

    # [...]

函数update:

def update():
    global score, score2

    if keyboard.right:
        player.x += 4
    if keyboard.left:
        player.x -= 4
    if keyboard.down:
        player.y += 4
    if keyboard.up:
        player.y -= 4

    if player.x > WIDTH:
        player.x = WIDTH
    if player.x < 0:
        player.x = 0
    if player.y < 0:
        player.y = 0
    if player.y > HEIGHT:
        player.y = HEIGHT

    if keyboard.d:
        player2.x += 4
    if keyboard.a:
        player2.x -= 4
    if keyboard.s:
        player2.y += 4
    if keyboard.w:
        player2.y -= 4

    if player2.x > WIDTH:
        player2.x = WIDTH
    if player2.x < 0:
        player2.x = 0
    if player2.y < 0:
        player2.y = 0
    if player2.y > HEIGHT:
        player2.y = HEIGHT

    dx1, dy1 = player.x - enemy.x, player.y - enemy.y
    dx2, dy2 = player2.x - enemy.x, player2.y - enemy.y
    dist1sq = dx1*dx1 + dy1*dy1
    dist2sq = dx2*dx2 + dy2*dy2 

    player_near = player if dist1sq < dist2sq else player2

    if enemy.x < player_near.x:
        enemy.x += 1
    if enemy.x > player_near.x:
        enemy.x -= 1
    if enemy.y < player_near.y:
        enemy.y += 1
    if enemy.y > player_near.y:
        enemy.y -= 1
    if player.colliderect(enemy):
        exit()
    if player2.colliderect(enemy):
        exit()

    if money.colliderect(player):
        money.x = random.randint(0, WIDTH)
        money.y = random.randint(0, HEIGHT)
        score = score + 1

    if money.colliderect(player2):
        money.x = random.randint(0, WIDTH)
        money.y = random.randint(0, HEIGHT)
        score2 += 1

"Player2" 无法做与 "player" 相同的事情

"Player2" is unable to do the same things as "player"

python

pygame

game-development

mu