----------------------------------- Nathan4102 Fri May 17, 2013 3:08 pm Array questions ----------------------------------- I'm making a minesweeper game for my summative, and I'm kind of stuck on something. What would be the most efficient way to store data for each individual cell(Click/Notclicked, number displayed, contains mine/doesn't)? I've taken a look at records, but i'm not sure if it'll work with what I need. Another possibility is a 2d array of strings, with each string containing info for the cell that could be dissected when needed, but if there's a better way, I don't want to get into all that string manipulation stuff. Thanks! Nathan ----------------------------------- Raknarg Fri May 17, 2013 3:15 pm RE:Array questions ----------------------------------- Sure, array of records would do just the trick. For instance, you could do this: %Lets say you had a 50x50 grid type gridData : record clicked, hasMine : boolean display : string end record var grid : array 1 .. 50, 1 .. 50 of gridData Lets say you wanted to see if the cell 45, 30 is clicked. You can call the variable there by calling: grid (45, 30).clicked So records in this case would be very useful. Not to mention, it's good to learn because it helps you understand the use of classes later (which are super useful, which you should aslo learn at some point soon) ----------------------------------- Nathan4102 Fri May 17, 2013 3:19 pm RE:Array questions ----------------------------------- Oh, sweet! I didn't think records would work with arrays, but if they do, I'll use them. I'll learn classes next year when I need them in ICS, for now, I'll stick with procedural programming. ----------------------------------- Raknarg Fri May 17, 2013 3:26 pm RE:Array questions ----------------------------------- gridData is a type the same way int or real are types, so they can be used in the same ways. You can result gridData, or take it in as a parameter if you want to ----------------------------------- Raknarg Fri May 17, 2013 3:28 pm RE:Array questions ----------------------------------- You don't have to wait btw. Do you code stuff for fun on your own time? ----------------------------------- Nathan4102 Fri May 17, 2013 3:32 pm RE:Array questions ----------------------------------- Man, I wish I knew about records earlier. I could have used them in some old projects. I usually have a couple projects going for fun, but my main focus is on schoolwork. ----------------------------------- Raknarg Fri May 17, 2013 3:34 pm RE:Array questions ----------------------------------- That happens all the time. Once i learned array, once I learned records, once I learned classes, or random algorithms ----------------------------------- Nathan4102 Fri May 17, 2013 3:41 pm RE:Array questions ----------------------------------- I'd like to learn classes, but I haven't seen any practical use of them where they are superior to procedures/functions! I tried learning about them once, but all this Dog.Bark and Dog.Walk stuff seemed pointless to me. ----------------------------------- Raknarg Fri May 17, 2013 3:47 pm RE:Array questions ----------------------------------- It's useful if you have things that are actual objects. They can have all their own variables, and do all their calculations within the class. For instance, have you ever tried making a button in turing? It's a tedious process, especially if you have more than one button. Hoever, you can create a class that handles everything for you. You want to know if the button is clicked? The class will perform calculations that are in the class, and call button -> is_clicked. You're done. Want to draw the button? button -> draw What if you have an entire page full of buttons? JUst call a procedure to initialize them all, and you're done. It's easy, and clean, and very useful. You can check this out if you want: http://compsci.ca/v3/viewtopic.php?t=30797 ----------------------------------- Nathan4102 Fri May 17, 2013 3:50 pm RE:Array questions ----------------------------------- Buttons are a pain in turing... I guess classes do have a use, but you can't use classes in turing, can you?? ----------------------------------- Raknarg Fri May 17, 2013 3:52 pm RE:Array questions ----------------------------------- Absolutely you can ----------------------------------- Nathan4102 Fri May 17, 2013 3:55 pm RE:Array questions ----------------------------------- :o I thought classes were only supported by OOP languages. I'll check em out soon! ----------------------------------- Raknarg Fri May 17, 2013 3:56 pm RE:Array questions ----------------------------------- class word export set_s, show_s var s : string proc set_s (s_ : string) s := s_ end set_s proc show_s put s end show_s end word var foo : pointer to word new word, foo foo -> set_s ("hi") foo -> show_s super redundant,. but yeah ----------------------------------- Nathan4102 Fri May 17, 2013 4:02 pm RE:Array questions ----------------------------------- That's pretty neat... and confusing! Is that foo part necessary? or can you not call Word.set_s without it? ----------------------------------- Raknarg Fri May 17, 2013 4:06 pm RE:Array questions ----------------------------------- You can't do that. Class is pretty similar to the type thing we talked about earlier. This is like a template for what you want each pointer to hold (a pointer is a variable that uses the class, btw). We can set 100 variables to this class, and they'd all have the same functions, but we could make them different. class word export set_s, show_s var s : string proc set_s (s_ : string) s := s_ end set_s proc show_s put s end show_s end word var word1, word2 : pointer to word new word, word1 new word, word2 word1 -> set_s ("hello ") word2 -> set_s ("world") word1 -> show_s word2 -> show_s ----------------------------------- Nathan4102 Fri May 17, 2013 4:09 pm RE:Array questions ----------------------------------- Oh, now I see how classes can be really useful. I'll probably dive into this stuff when I learn Java sometime soon hopefully. Thanks for the advice and examples! ----------------------------------- Raknarg Fri May 17, 2013 4:12 pm RE:Array questions ----------------------------------- IF you ever get to that stage, you should look this up: http://processing.org/ It's simple like turing and it's structured very similarly, but it has the power and syntax of Java. Learn turing first though ----------------------------------- Nathan4102 Fri May 17, 2013 4:16 pm RE:Array questions ----------------------------------- Well I'm going to need to learn Java too, since my co-op in 8 months will be using Java, plus my computers course in the fall will be in Java, so I'd like to get a bit of a head start before that class starts. The questions isn't IF I get to that stage, it's WHEN. ;) ----------------------------------- Raknarg Fri May 17, 2013 4:17 pm RE:Array questions ----------------------------------- Well in that case, you're probably better off actually learning Java rather than something close to java :P also yay 1000 posts ----------------------------------- Nathan4102 Fri May 17, 2013 4:44 pm RE:Array questions ----------------------------------- That's what I was thinking, and gratz! I'll catch up to ya soon! ----------------------------------- Panphobia Fri May 17, 2013 8:45 pm Re: Array questions ----------------------------------- This here was one of my major OOP assignments in grade 12 compsci, it isn't that hard but its just to give a feel on what it looks like [code]ICS4U ? Object Orientation Assignment Part 2 ? Novel Knights and Wicked Wizards The world contains two types of humans: knights and wizards. Humans can be represented in the world as small squares. Knights are blue and Wizards are red. The relationship between Humans, Knights and Wizards can be described by the following hierarchy: All humans can perform certain actions as described by the following interface:[/code]https://lh3.googleusercontent.com/3tZdinTjzSV7s4YBNvBN7KmSlDf-cyXYDeC3Xm1ohLrNwEycpjUmBTWDT61j_DxIKqeyV2REeICImUdeK_xNaudNlVW25kI8l9WpsBi-vyD5ZvU5MgM[code] Part 1: Write an abstract Human class that implements the Human interface above. You?ll need to include the interface in your project. Your abstract Human should conform to the following class summary box: Class: Human Private Instance Variables: String name, int age, double height, int health, int xPos, int yPos Public Instance Methods: constructor void move(int x, int y) int getXPos int getYPos int getHealth boolean setHealth String toString String getName void setName int getAge boolean setAge double getHeight boolean setHeight void draw (Pen p) Public Class Variables: double LOW_HEIGHT, double HIGH_HEIGHT, int LOW_AGE, int HIGH_AGE, int LOW_HEALTH, int HIGH_HEALTH, int NUM_HUMANS Public Class Methods: int getNumHumans void setNumHumans String getAgeRules String getHeightRules String getHealthRules Part 2: Implement the Knight and Wizard classes as described in the class summary boxes below. Class: Wizard Private Instance Variables: int magicka Public Instance Methods: constructor void draw(Pen p) void castSpell String toString boolean setMagicka (int m) int getMagicka boolean equals(Wizard w) Wizard clone Public Class Variables: int LOW_MAGICKA, int HIGH_MAGICKA Public Class Methods: String getMagickaRules Class: Knight Private Instance Variables: String horseName Public Instance Methods: constructor String toString void draw(Pen p) void setHorse (String n) String getHorseName boolean equals(Knight k) Knight clone Public Class Variables: none Public Class Methods: none Part 3: Write a test program World, which: 0. Declares 4 Humans. 1. Instantiates a Knight 2. Instantiates a Wizard and moves it. 3. Clones the Knight and changes its name 4. Checks if the Knight clone is not equal to the original Knight, and if so: a) Moves the clone 5. Clones the Wizard 6. Checks if the Wizard clone is equal to the original Wizard, and if so: a) Moves the clone 7. Draws both Knights and both Wizards 8. Prints the total number of Humans living in this World. 9. Prints a description of all Humans to the console. Evaluation: Marks Part 1: Abstract Human Class: Private Instance Variables: Public Instance Methods: Public Class Variables: Public Class Methods: /3 TI /7 TI /2 TI /2 TI Part 2: Knight Class Implementation: Wizard Class Implementation: /4 A /5 A Part 3: Declare Humans Instantiate Knight and Wizard Clone?s Knight and Wizard Checks and Moves Clones Draws and Prints World Info Header, Commenting Challenge: Draw actual Knights and Wizards! /1 K /1 K /4 K /4 K /2 C /4 C HumanInterface Human (abstract) Knight (concrete) Wizard (concrete) Implements [/code] ----------------------------------- Nathan4102 Fri May 17, 2013 9:56 pm RE:Array questions ----------------------------------- It looks like they've written half the thing for you! Interesting though, thanks for posting.