Wednesday, November 3, 2010

Lemonade Stand - New Graphics

 Exciting news: Lemonade Stand now has new graphics! The background image has not only been redrawn (thanks to JT) but we have 3 different versions for each of the weather conditions: hot, nice, and cloudy (above images left to right). I really like the new background and think it really adds to the overall feel to the game. I like having icons the represent the stock but I think some of them are difficult to recognize. The lemon icon came out really well but JT is going to change the cup icon to show only one cup and we aren't really sure what to use as an icon for sugar (any ideas anyone?).One of the things that I would still like to see changed is to separate the "Buy Options" and "Day Log" into separate fields. Putting them together makes too much text in one place. This should be fixed when we implement the buy options in our new shop view:

This is a diagram that we created yesterday for how we want to layout the new shop menu. The menu has 3 components: tabs on the top to select type of things to buy, icons in the center for what is currently available to buy, and a shopping card on the bottom to keep track of what you have already selected. A large factor in this layout was making it easily expandable as the game expands. With tabs for multiple types of items we can add recipes, tool, etc. in the future. The shopping cart will allow users to keep track of all of the things they are buying without looking at each tab. I really like the new design and hopefully we (JT) can get it done before we release in a couple weeks.

As always, let me know what you think!

Thursday, October 21, 2010

Lemonade Stand - Updated Goals

This week the Lemonade Stand group met (Nate, JT, and myself) and revised our goals for the quarter. It is almost half way through week 7 (out of only 10 weeks) so we have about 4 weeks of class left to work on our project. One of the main things we discussed is what we could realistically get done over the next 4 weeks. Unfortunately, we are not going to be able to get nearly as much accomplished as we originally set out to do at the beginning of the quarter because 1) we overestimated the amount of time we would be able to dedicate to the project (all of us have other classes) and 2) we underestimated the complexity of the new features we wanted to add to the game.

With the limited time left we have decided to focus more on making the existing game and its features more user friendly verses adding new features. Sadly, this means that the money counting system will not be implemented (one of my favorite features). One of our shorterm goals is creating a new background image and having 3 different versions to indicate the 3 weather conditions (hot, nice, and rainy). This will give a visual indicator of the weather instead of just a single line of text. We will also be working on making a visual interface for the store where a player buys their daily supplies.

Right now our biggest problem is that we are stalled by a need for art assets. The main improvements that we will be working on will be improving the usability of the game which requires a lot of updating to the GUI. The code base is pretty much established so there isn't a whole lot to do with updating the code so that kind of limits our progress. Hopefully we will be able to come up with some other tasks to do in the meantime to improve the game.

Thursday, October 14, 2010

Usability Testing - Eye Tracking

I just found out that we might get a chance to test our games with actual kids at the end of the quarter. I love kids so I am very excited about the chance to hang out with kids and get their feedback on our game. We will hopefully be going to a 4th grade math class to allow the students to try out our games.

I am also considering the possibility of using eye tracking to do some usability tests on our game. I have worked in the Multidisciplinary Visual Research lab here at RIT for a couple years so I have a lot of experience using eye tracking. For those who do not know what eye tracking is (I am assuming that is most people) the general idea is to be able to pinpoint exactly where a person is looking as they do a task. We usually use eye tracking to understand how people are processing stimuli in ways that they may not think about and often cannot vocalize. Using eye tracking while a person is playing Lemonade Stand could be helpful for usability testing in that we can see what areas they are looking at for game controls. Part of our current goals involve completely redesigning the interface so seeing how a user processes the game could be helpful.

I am not sure how feasible it would be to use eye tracking with getting people in the lab and also using the Sugar OS with the eye tracking software (eye trackers are incredibly finicky) but it would definitely be a great tool if we can work out the details.

Friday, October 8, 2010

Lemonade Stand - Money Images

This is a prototype image of my idea for money counting. The design is supposed to represent a cash register where a player manages their money. In this design I didn't really show what values the user enters and what values are calculated automatically but I figure those can be customized based on difficulty level. The user would definitely enter the amounts of each coins but the amount of math they are required to perform can vary. The right side of the cash register is set up like a typical addition problem so it will hopefully be a familiar format. As always, your feedback is welcome!

Thursday, October 7, 2010

Lemonade Stand - Shop Ideas

I have been testing (playing with) Lemonade Stand and one of the features that needs to be improved is the process of buying supplies. As a group we have decided to create a shop-like interface where a player purchases supplies at the beginning of the day.

This is the current buying interface which is text at the top of the screen. One of things I found difficult the first time I played the game was that I didn't notice that sugar and cups were sold in bulk. Starting out with $10.00, if you buy more than 1 sugar then all of your money is gone but you don't have enough supplies to make any money. At that point the only options a player has is to quit (startover) or just go through the game hoping for "raining cups" or a lemonade truck crashing in front of the stand. I think that an important aspect of a new shop would be to indicate if the player is trying to spend more money than they have verses just not receving the items with no feedback.

This is the new interface that I would like to use for the shop feature. Some of the goals of creating this style of an interface is to make it more visually appealing but also to make the game more usable and less frustrating. Each item has a small icon which helps for kids who struggle with reading, plus, I have made mistakes and bought sugar when I thought I was buying lemons and wasted all of my money.

The image on the right is another example of the same shop view but in this one the user is trying to purchase items that total over the amount that they have so the total is in red. In this situation, the user would not be able to complete their purchase until the total was less than or equal to their total money available. When the quantities are adjusted to fit the available balance the total will turn back to black (or maybe green) and the purchase can be completed.

To vary the difficulty of the game I would like to be able to choose which of the values the user needs to input themselves. In the images above the user only inputs the quantities of each item and the individual and grand totals are done automatically. A possible variation would be to have the user calculate/input the totals themselves requiring more math practice. A higher difficulty could be to not display the subtotals requiring more mental math.

Please let me know what you think of this as a potential interface!

Thursday, September 30, 2010

Warren Buckleitner

In class today we had Warren Buckleitner as a guest speaker through video chat. All I can say is that I would love to have his job. He does Children's Technology Review where he reviews all of the latest children's toys and also runs Dust or Magic which is a Wiki about which children's toys are great (Magic) or which ones fail (Dust). I think this would be a very fun job because 1) he gets to play with toys all day and 2) he gets to work with children. On a more serious note, I am actually really interested in usability. I think that working with kids in "interactive media" development would be a fun way to combine my interests in Information Technology and Psychology plus I have a lot of experience working with kids.

Warren showed us several toys, from the new Sony move to a really obnoxious Mikey Mouse toy, and talked about what makes a toy successful and what makes it fail. I found the Children's Interactive Media Evaluation Form very helpful and will use it to evaluate the software I will be developing in class. The evaluation uses the following categories to evaluate children's software:

I. Ease of Use (Can my child use it with minimal help?)
II. Childproof (Is it designed with child-reality in mind?)
III. Educational (What can my child learn from this program?)
IV. Entertaining (Is this program fun to use?)
V. Design Features (How smart is this program?)
VI. Value (How much does it cost vs. what it does? Is it worth it?)

An important thing to remember is  "kids + creepy people + money = never good"

Friday, September 24, 2010

Lemonade Stand - Fall Plans

The group working on Lemonade Stand this fall will be myself, Nate Case, and JT Mengel (at least those are the people from the Humanitarian Open Source Software class at RIT). We officially met today to make plans for the quarter. The following are our goals for the quarter:
  • Week 3:
    • Get JT's sketches into image files
    • come up with more events and weather ideas
    • add recipes
  • Week 4:
    • new background image
    • get into
    • define what difficulties entail, implement lowest difficulty
    • nail down ideas about overlays, startup screen
  • Week 5:
    • implement two difficulties, simple and insane
    • Get counting game images
    • implement basic splash screen
  • Week 6:
    • Get store images
    • implement counting game
  • Week 7:
    • Get activity log images
    • Implement store
  • Week 8:
    • Implement activity log
    • Get images for other parts of the game (events, weather, etc.) 
I will be focusing on adding more features to the game, like events, and working on making the game more user friendly especially for kids. JT has the artistic skills of the group so he will be working on improving the graphics and adding graphics for the new features. Nate has been working on the programming for a while so he will likely do most of the coding. 

I think we have a good group for the game and I am excited about what we can get done in the next 7 weeks (such a short time).

Wednesday, September 22, 2010

Lemonade Stand - Random Events

I was looking at the Lemonade Stand Wiki and one of the wishlist items is "Random events that may influence supplies and/or cost and/or customers."

One idea I came up with is having sales on items that are needed to create the lemonade. The sample I created shows an example of a sale on lemons making them $0.25 instead of the usual $0.35. I think that this could add an extra element to the game in that a user will have to think more about when to buy particular ingredients. I noticed that there is currently a feature in the game where items "decay" after a certain period of time (I believe 5 days) so this would require the user to think about how much they should buy based on current price and anticipated sales. A small note with the decay feature is that I think it should be announced to the user when items decay because it took a while to even realize that it was happening.

A good opposite of having items decrease in cost is to have them increase in cost due to a shortage. This event would also be random and would pretty much do that same thing as having a sale but would instead increase the cost.

I think I want my primary focus to be implementing a better system of counting money but adding more events also seems feasible especially if someone else would like to help me with the coding.

Lemonade Stand - Globalizing

I have received a couple comments about using images of US currency in a game that is designed primarily for children outside of the US and that got me thinking about other changes that might make the game more realistic for children.

One thing that I have been thinking about is will the concept of a lemonade stand make sense to children in other countries. The concept of buying and selling goods is pretty universal but do other places have lemonade as a common drink or are there others things that kids might sell to try to make money. I feel like I need to get an idea of where our game would most likely be implemented and what aspects of the game need to be changed to be culturally appropriate. I think for right now though, I am going to focus on the functionality but try to focus the design in a way that text, images, etc. could easily be replaced to apply to various cultures.

I personally don't have much knowledge of any of the places the OLPC program is being implemented so if someone could shed some light on the subject it would be greatly appreciated.

Tuesday, September 21, 2010

Lemonade Stand - Money Counting

Unlike most computer scientists I actually really like graphics (although I am definitely not and artist) so one of the things I want to work on is not only improving the GUI for Lemonade Stand but also the user experience.

I should probably explain my background a little bit to give an idea of why I am interested in doing stuff with user experience. I already said in my introduction post that I am a 4th year Information Technology and Psychology with a minor in Computer Science. I switched into those majors from Computer Engineering so I do have some (but very limited) experience with hardware. I am also involved in eye-tracking research in the Multidisciplinary Visual Research Lab (MVRL) here at RIT. I have yet to decide what exactly I want to do as a career but I am hoping to combine my technical/coding skills with psychology to work as sort of a go-between for clients and programmers.

Anyway, back to Lemonade Stand... One of the things I want to work on is possibly changing the background image and another is adding a feature to help with calculation of money.

This is an image that I made in Photoshop of how I would like a user to be able to do money calculations. Basically it is an interactive form where the user can input numbers (in the gray boxes) signifying the amounts of each of the coins and they would get a total from those coins (0.10 & 1.25 in the example). At the bottom it would give a total number of coins and also a total dollar amount. For the dollar amount I would like it to remain black if the total is under the desired count, green if the total is the correct amount, and red if the total is over the amount. The idea behind this is that it would be more user friendly and a player could keep trying until they get the correct amount of money. I think this would better promote learning than simply loosing the money if they get the total incorrect.

My image also includes a total number of coins used to make the amount. I think it would be cool as a more advanced feature to have stipulations on the number of coins used such as fewest coins or even using a specific number such as 10. I think this would be useful because it would allow for more complicated problem solving and also would prevent the player from selecting all pennies to get the total.

Again, as I said previously, I have never programmed in Python and am new to the OLPC and open source community in general so I am not sure how feasible my idea are. Also, as a newbie, I welcome feedback/advice about any of my ideas or potential other ideas.

Lemonade Stand - First Impressions

I think I have officially decided that I want to work on Lemonade Stand as my project for this quarter. I remember playing the game when I was younger and it was pretty simple but fun and I definitely think there are things I could add to the game.

So this is the main screen for Lemonade Stand. I have never used Python before so I have no idea how to do graphics but I would like to try to improve the interface. The background seems like a static image so that might be an easy change.

The game works by the user buying supplies (Sugar, Lemonade, and Cups) and then the Day Log says how many cups of lemonade are sold. The user then has to enter the amount of money made in terms of dollars, quarters, dimes, etc. When I first played the game I tried just entering the amount made by selling lemonade and kept getting a message saying "You dropped your money while trying to count it." This was very frustrating because I didn't know why I kept dropping the money and I couldn't seem to make any money. I would find that I would run out of money and there was nothing that I could do but start over.

Eventually I figured out that I needed to find the profit (sales - supplies) and if I got it right I would actually get to keep the money I made. Eventually I started actually making money in the game. I got to several hundred dollars in the game and would buy and sell a lot of supplies when I made a math error and lost everything. This was very frustrating because I didn't even have enough money to try again.

Overall, the game seems interesting but it isn't necessarily as user friendly as it could be. I am hoping through my involvement I can add more features but also make the game easier to use.

Wednesday, September 15, 2010


My name is Sarah Wagner. I am a 4th year student at Rochester Institute of Technology double majoring in Information Technology and Psychology and minoring in Computer Science. I am getting involved with Sugar and the open source community through the One Laptop Per Child (OLPC) program. I will be working as a part of the Math4 project getting involved with some of the existing projects.