Lemonade Stand
Description
This is your basic "Lemonade Stand" style game, where the player manages a lemonade stand (or similar such store) and tries to make as much money as possible. The game is designed to incorporate money and fractional math skills to teach basic operations.
We plan to begin with a basic framework, e.g. text based command line, and work up based on free time. Ideally, the game will consist of graphics and a refined GUI front end, similar in look to the currently available flash implementations of Lemonade Stand (although more simplistic, being based in Python).
Localization will be implemented in the final phase, with the stand being written to use more regional ingredients and products.
Goals
We're looking to create a workable prototype with the ability to buy materials and sell a product.However, the most important goal is to have a working game. While possibly not feature complete, the game should have basic functions working.
Extra Features
Based on available time:
- Creating a GUI based game
- Incorporating counting of money (bills and coins) to make change
- Creating seasons to vary prices and product demand
- Possibly making materials perishable to increase difficulty
- Making an intuitive program that can be easily learned, and which has replay value
- Weather patterns impacting sales
- Advanced mode: changing the recipe for your "lemonade"
- Bargaining/haggling
- Random events that may influence supplies and/or cost and/or customers
- Potential use of network, competitive or cooperative modes
- Choosing location of Lemonade Stand within the town, would influence sales, cost of supplies, etc.
- Cool Random Events:
Ants steal your supplies
-10% sugar
A lemon truck crashes in front of your stand
+10 lemons
Potential Problems
Localization is likely to be a big problem in this game. Not simply translating the words, but also translating the idea, ie. finding out what kind of shop would be reasonable to open in a country, what it might stock, etc.
Updates and Milestones
Updates:
4/28: Wiki reorganized, content added
Milestones:
4/24: Have everyone look at the current implementations.
5/1: produce a basic 'sugarized' build to work from. Implement price fluctuations.
5/8: Move to a 'graphical interface' based off of pyGTK or pygame. Add any art we have managed to collect where it seems appropriate.
Design Decisions
Is lemonade made at the beginning of the day (make all available lemonade at once) or on the fly (a customer asks for lemonade and it is made for them)? This is important as it impacts the resources from day to day. In the former, normally non-perishable objects like cups will be used if they can make another drink (even beyond demand), however in the latter, it makes the game easy if you stock up on resources and slowly sell them each day. This is usually mitigated by having perishable resources (lemons, etc) and variable prices.
Educational Standards
4.N.4 Select, use, and explain models to relate common fractions and mixed numbers (1/2, 1/3, 1/4, 1/5, 1/6, 1/8, 1/10, 1/12, and 11/2), find equivalent fractions, mixed numbers, and decimals, and order fractions
4.N.6 Exhibit an understanding of the base ten number system by reading, naming, and writing decimals between 0 and 1 up to the hundredths.
4.N.10 Select and use appropriate operations (addition, subtraction, multiplication, and division) to solve problems, including those involving money.
4.D.3 Construct, draw conclusions, and make predictions from various representations of data sets, including tables, bar graphs, pictographs, line graphs, line plots, and tallies
Contacts
Links and Resources
Coming soon!
Code so far
#!/usr/env python
# -*- coding: cp1252 -*-
import random
#Generisize the names of supplys to make it easily editable
name = 'Lemonade Stand'
first_supply = 'cups'
second_supply = 'lemons'
third_supply = 'sugar'
what_selling = 'cups'
print 'Welcome to ' + name
def take_input(text, default = 0):
try:
in_text = input(text+" ["+`default`+"]: ")
except:
return default
if in_text < 0:
in_text = 0
return in_text
def random_Event():
global stored_sugar, stored_lemons, stored_cups
event = random.randint(0, 10)
if event == 0:
if stored_sugar > 10:
stored_sugar -= 10
print 'Ants steal your supplies!'
else:
stored_sugar = 0
elif event == 1:
print 'A lemon truck crashes in front of your stand!'
stored_lemons += 10
elif event == 2:
print 'It starts raining cups!'
stored_cups += 10
print ""
def supply_Decay():
global stored_sugar, stored_lemons, stored_cups
if stored_sugar > 0:
stored_sugar -= 10 % stored_sugar
if stored_lemons > 0:
stored_lemons -= 10 % stored_lemons
if stored_cups > 0:
stored_cups -= 10% stored_cups
return -1
# default values
cup_price = .25
lemon_price = 1.00
sugar_price = .05
product_price = 1.50
#starting resources
bank = 100
stored_cups = 0
stored_lemons = 0
stored_sugar = 0
# take in input
num_days = take_input("How many days would you like to play for?", 30)
for day in range(1, num_days + 1):
print ""
print "____________________"
print " Day number " + `day`
print "¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯"
print ""
random_Event()
print "You have "+`stored_cups`+ " " + first_supply + ", " +`stored_lemons`+ " " + second_supply + ", and "+`stored_sugar`+ " " + third_supply + " left."
print first_supply + " price: $" + `cup_price` + " " + second_supply + " price: $"+ "%.2f" % lemon_price + " " + third_supply + " price: $"+ "%.2f" % sugar_price
expenses = 0
cost_over = 1
#Checks to make sure you dont go over your bank amount while buying.
while cost_over == 1:
potential_expense = 0
in_num = take_input("How many " + first_supply)
potential_expense = expenses + (in_num * cup_price)
if potential_expense < bank:
cost_over = -1
expenses += in_num * cup_price
stored_cups += in_num
else:
print 'You cant afford that many ' + first_supply
cost_over = 1
while cost_over == 1:
potential_expense = 0
in_num = take_input("How many " + second_supply)
potential_expense = expenses + (in_num * cup_price)
if potential_expense < bank:
cost_over = -1
expenses += in_num * lemon_price
stored_lemons += in_num
else:
print 'You cant afford that many ' + second_supply
cost_over = 1
while cost_over == 1:
potential_expense = 0
in_num = take_input("How much " + third_supply)
potential_expense = expenses + (in_num * cup_price)
if potential_expense < bank:
cost_over = -1
expenses += in_num * sugar_price
stored_sugar += in_num
else:
print 'You cant afford that many ' + third_supply
today = min(stored_cups, stored_lemons, stored_sugar)
# Option 1: make maximum available
#stored_cups -= today
#stored_lemons -= today
#stored_sugar -= today
#print `today`+" cups made for $"+`expenses`
#default value
requested_sales = 5
sales = max(min(today, requested_sales),0)
# Option 2: make as many as requested
stored_cups -= sales
stored_lemons -= sales
stored_sugar -= sales
print `sales`+" cups made for $"+ "%.2f" % expenses
profit = sales * product_price
print `sales`+ " " + what_selling +" were sold today for $"+ "%.2f" % profit
print "You made $"+ "%.2f" % (profit - expenses)+" today."
bank += profit - expenses
print "Current funds: $"+ "%.2f" % bank
supply_Decay()
print
print "Done!"