练手小程序（四）

这次的练手程序依然来自于Knight lab的博客文章Five mini programming projects for the Python beginner,任务的名字叫做TextBased Adventure Game，也就是文字冒险游戏
目标：我们的目标是完整的建立一个文字小游戏，这个小游戏基于玩家的输入让玩家在不同的房间中移动，并且玩家可以知道当前房间的描述信息。为了完成这个游戏，我们需要定义可移动的方向，还要监控玩家已经移动的距离，她/他现在在那个房间里，并且需要在房间周围放置“墙壁”来做一下范围限制。

需要用到的python知识：
- string（字符串）
- Variables（变量定义）
- Input/Output（输入/输出）
- If/Else Statements（If/Else控制流语句）
- Print（输出语句）
- List（列表）
- Integers（整数类型）

#!/usr/bin/env python
# _*_ coding: utf-8 _*_

# Firstly , we need a room, maybe it's length is 10m, width is 10m , and has a wall
# that length 5m in the meddle of the room
# the room looks like below
#
#    ————————————————————
#    | x                 |
#    |                   |
#    |                   |
#    |                   |
#    |——————————         |
#    |                   |
#    |                   |
#    | o                 |
#    |———————————————————|

# x is the starting point , and o is the destination

# use a list of list to discribe a room
room = [(x,y) for x in range(10) for y in range(10)]

# define which positions are in wall
wall = []
for position in room:
    if position[0] == 0 or position[0] == 9:
        wall.append(position)
    elif position[1] == 0 or position[1] == 9:
        wall.append(position)
    elif position[1] == 4 and position[0] <= 4:
        wall.append(position)

# define the function of how to move
def move(original_position, direction):
    if direction == "r":
        return original_position[0]+1, original_position[1]
    elif direction == "l":
        return original_position[0]-1, original_position[1]
    elif direction == "u":
        return original_position[0], original_position[1]-1
    elif direction == "d":
        return original_position[0], original_position[1]+1

#def mv_left(original_positin):
#    return original_positin[0]-1, original_positin[1]
#
#def mv_up(original_positin):
#    return original_positin[0], original_positin[1]-1
#
#def mv_down(original_positin):
#    return original_positin[0], original_positin[1]+1


def adventure():
    original_position = (1,1)
    destination = (1,8)
    while True:
        if original_position == destination:
            print "Congratulations, you got it!"
            break
        else:
            direction = raw_input("Which direction would you like to move?(r/l/u/d) ").strip().lower()
            if direction in ['r', 'd', 'l', 'u']:
                final_position = move(original_position, direction)
                if final_position in wall:
                    print "This direction is the wall"
                    print "You are on (%d,%d) now." % (original_position[0], original_position[1])
                    continue
                else:
                    original_position = final_position
                    print "You are on (%d,%d) now." % (original_position[0], original_position[1])
                    continue
            else:
                print "You must input r,l,u or d"
                continue

if __name__ == "__main__":
    adventure()

以上是编写的text adventure 小脚本