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植物大战僵尸是一款十分经典的游戏,在github上就有python版的开源代码(https://github.com/search?q=PythonPlantsVsZombies)打开后可以看见有六个版本,在这里我选的是第一个版本。
太阳花,豌豆射手,寒冰射手,坚果,樱桃炸弹。新增加植物:双重豌豆射手,三重豌豆射手,食人花 ,小喷菇,土豆地雷,倭瓜。
普通僵尸,旗子僵尸,路障僵尸,铁桶僵尸。读报僵尸。
在源文件中有六个关卡,四种模式:==白日模式、夜晚模式、传送带模式、坚果保龄球模式==
由于关卡设置是以.json文件保存,所以我们可以自己更改。
这个游戏的源文件中包含了多个py文件,main.py中只有这5行代码:
import pygame as pg
from source.main import main
if __name__=='__main__':
main()
pg.quit()
这个文件是用来设置植物卡片的,先来看源码:
card_name_list = [c.CARD_SUNFLOWER, c.CARD_PEASHOOTER, c.CARD_SNOWPEASHOOTER, c.CARD_WALLNUT,
c.CARD_CHERRYBOMB, c.CARD_THREEPEASHOOTER, c.CARD_REPEATERPEA, c.CARD_CHOMPER,
c.CARD_PUFFMUSHROOM, c.CARD_POTATOMINE, c.CARD_SQUASH]
plant_name_list = [c.SUNFLOWER, c.PEASHOOTER, c.SNOWPEASHOOTER, c.WALLNUT,
c.CHERRYBOMB, c.THREEPEASHOOTER, c.REPEATERPEA, c.CHOMPER,
c.PUFFMUSHROOM, c.POTATOMINE, c.SQUASH]
plant_sun_list = [50, 100, 175, 50, 150, 325, 200, 150, 0, 25, 50]
plant_frozen_time_list = [0, 5000, 5000, 10000, 5000, 5000, 5000, 5000, 8000, 8000, 8000]
all_card_list = [0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10]
这里以向日葵卡片为例:
card_name_list[0] 是向日葵卡片的名字,用来获取太阳花卡片的图片。
plant_name_list[0] 是向日葵的名字,用来获取太阳花卡片的图片。
plant_sun_list[0] 是种植向日葵需要花费的太阳点数。
plant_frozen_time_list[0] 是向日葵的冷却时间。
这一部分设置了当鼠标点击卡片后执行的动作:
class Card():
def __init__(self, x, y, name_index, scale=0.78):
self.loadFrame(card_name_list[name_index], scale)
self.rect = self.image.get_rect()
self.rect.x = x
self.rect.y = y
self.name_index = name_index
self.sun_cost = plant_sun_list[name_index]
self.frozen_time = plant_frozen_time_list[name_index]
self.frozen_timer = -self.frozen_time
self.select = True
def loadFrame(self, name, scale):
frame = tool.GFX[name]
rect = frame.get_rect()
width, height = rect.w, rect.h
self.image = tool.get_image(frame, 0, 0, width, height, c.BLACK, scale)
def checkMouseClick(self, mouse_pos):
x, y = mouse_pos
if(x >= self.rect.x and x <= self.rect.right and
y >= self.rect.y and y <= self.rect.bottom):
return True
return False
def canClick(self, sun_value, current_time):
if self.sun_cost <= sun_value and (current_time - self.frozen_timer) > self.frozen_time:
return True
return False
def canSelect(self):
return self.select
def setSelect(self, can_select):
self.select = can_select
if can_select:
self.image.set_alpha(255)
else:
self.image.set_alpha(128)
def setFrozenTime(self, current_time):
self.frozen_timer = current_time
def update(self, sun_value, current_time):
if (self.sun_cost > sun_value or
(current_time - self.frozen_timer) <= self.frozen_time):
self.image.set_alpha(128)
else:
self.image.set_alpha(255)
def draw(self, surface):
surface.blit(self.image, self.rect)
这个程序的一部分功能是设置图片的切换:
def setupMouseImage(self, plant_name, plant_cost):
frame_list = tool.GFX[plant_name]
if plant_name in tool.PLANT_RECT:
data = tool.PLANT_RECT[plant_name]
x, y, width, height = data['x'], data['y'], data['width'], data['height']
else:
x, y = 0, 0
rect = frame_list[0].get_rect()
width, height = rect.w, rect.h
if plant_name == c.POTATOMINE or plant_name == c.SQUASH:
color = c.WHITE
else:
color = c.BLACK
self.mouse_image = tool.get_image(frame_list[0], x, y, width, height, color, 1)
self.mouse_rect = self.mouse_image.get_rect()
pg.mouse.set_visible(False)
self.drag_plant = True
self.plant_name = plant_name
self.plant_cost = plant_cost
def drawMouseShow(self, surface):
if self.hint_plant:
surface.blit(self.hint_image, self.hint_rect)
x, y = pg.mouse.get_pos()
self.mouse_rect.centerx = x
self.mouse_rect.centery = y
surface.blit(self.mouse_image, self.mouse_rect)
self.mouse_image :根据 plant_name 获取选中的植物图片;
self.mouse_rect:选中植物图片的位置,在drawMouseShow函数中,需要将植物图片的位置设置成当前鼠标的位置;
**pg.mouse.set_visible(False)**:隐藏默认的鼠标显示,这样效果就是鼠标图片切换为选中的植物了。
这个文件的一个作用是提示种在哪个方格中,比如下图红圈的这种效果:
代码:
MAP_EMPTY = 0
MAP_EXIST = 1
class Map():
def __init__(self, width, height):
self.width = width
self.height = height
self.map = [[0 for x in range(self.width)] for y in range(self.height)]
def isValid(self, map_x, map_y):
if (map_x < 0 or map_x >= self.width or
map_y < 0 or map_y >= self.height):
return False
return True
def isMovable(self, map_x, map_y):
return (self.map[map_y][map_x] == c.MAP_EMPTY)
def getMapIndex(self, x, y):
x -= c.MAP_OFFSET_X
y -= c.MAP_OFFSET_Y
return (x // c.GRID_X_SIZE, y // c.GRID_Y_SIZE)
def getMapGridPos(self, map_x, map_y):
return (map_x * c.GRID_X_SIZE + c.GRID_X_SIZE//2 + c.MAP_OFFSET_X,
map_y * c.GRID_Y_SIZE + c.GRID_Y_SIZE//5 * 3 + c.MAP_OFFSET_Y)
def setMapGridType(self, map_x, map_y, type):
self.map[map_y][map_x] = type
def getRandomMapIndex(self):
map_x = random.randint(0, self.width-1)
map_y = random.randint(0, self.height-1)
return (map_x, map_y)
def showPlant(self, x, y):
pos = None
map_x, map_y = self.getMapIndex(x, y)
if self.isValid(map_x, map_y) and self.isMovable(map_x, map_y):
pos = self.getMapGridPos(map_x, map_y)
return pos
self.map:二维list,用来保存每个方格的状态。每个entry初始化为 0, 表示可以种植物,值为1时表示这个方格已经种了植物。
getMapIndex 函数:传入参数是游戏中的坐标位置(比如当前鼠标的位置),返回该位置在地图的哪个方格中。
getMapGridPos 函数:传入一个方格的index,返回在该方格中种植物的坐标位置。
showPlant 函数:根据传入的坐标位置,判断该位置所在的方格是否能种植物,如果能种,就返回返回在该方格中种植物的坐标位置。
在源代码中的md文件中介绍了两个可编辑的地方:
在constants.py中:
__author__ = 'marble_xu'
START_LEVEL_NUM = 0#在这里更改
ORIGINAL_CAPTION = 'Plant VS Zombies Game'
SCREEN_WIDTH = 800
SCREEN_HEIGHT = 600
SCREEN_SIZE = (SCREEN_WIDTH, SCREEN_HEIGHT)
GRID_X_LEN = 9
GRID_Y_LEN = 5
GRID_X_SIZE = 80
GRID_Y_SIZE = 100
0代表第1,1代表第2关......
地图设置都保存在json文件中,我们以其中一个为例:
{
"background_type":0,
"init_sun_value":50,
"zombie_list":[
{"time":20000, "map_y":0, "name":"Zombie"},
{"time":40000, "map_y":2, "name":"FlagZombie"},
{"time":50000, "map_y":4, "name":"Zombie"},
{"time":70000, "map_y":3, "name":"Zombie"},
{"time":72000, "map_y":1, "name":"FlagZombie"},
{"time":74000, "map_y":2, "name":"Zombie"},
{"time":90000, "map_y":0, "name":"Zombie"},
{"time":91000, "map_y":1, "name":"FlagZombie"},
{"time":92000, "map_y":2, "name":"Zombie"},
{"time":93000, "map_y":3, "name":"FlagZombie"},
{"time":94000, "map_y":0, "name":"Zombie"},
{"time":95000, "map_y":4, "name":"FlagZombie"},
{"time":96000, "map_y":1, "name":"Zombie"}
]
}
通过这一特性,我们可以创造自己的地图。
点击链接:https://github.com/PythonPlantsVsZombies后点击左边的code,然后点download zip