Random Guessing Game

We will here develop a random guessing game.

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Table of Contents

• OCaml Baguette# Interpreter
  • Table of Contents
  • Requirements
  • Installation
    • Pre-compiled binaries
    • OPAM
    • Source
  • History
  • Support
  • Building
  • Usage
  • Test
• REPL
  • Links
  • Prerequisite
  • General command line
    • REPL Commands
  • REPL
    • Variable
    • Hinting
    • Auto-completion
  • Command Line
  • Errors
    • Wrong Type
    • Syntax
    • List of errors
• Basic Usage
  • Links
  • Support
  • IO
  • Mathematics
  • Boolean algebra
    • Booleans
    • Algebra
  • Array Manipulations
  • String Manipulations
    • Conversion from string
    • Conversion to string
  • Variables
• Advanced Usage
  • Introduction
  • Labels
  • GOTOs
    • Order of execution
  • Errors
  • Variables and Labels
  • IFs
  • Functions
  • Load
• Random Guessing Game
  • Specifications
  • Initialization of the game
    • Welcome
    • Generation of the number to guess
    • Declarations
  • The Game Loop
    • A Step
    • The Loop
• Binary Turing Machine
  • Introduction
  • Specification
  • Initialization
  • Program reading
  • One Step
  • The Main Loop
• Binary Turing Machine Examples
  • Left Bit Shift
  • Binary Add
  • Infinite loop

Specifications

This game must

• Generate a random integer between 0 and 1000
• Ask the user for a guess
• Prints out if their guess is bellow or over the generated or if they guessed right
• Do that ten times

Initialization of the game

We will code in the game.bag file First we to print out the basic of the game, with CROISSANT

Welcome

game.bag

CROISSANT CHOUQUETTE PARISBREST Welcome to the ~~Guessing Game~~ : You have ten tries to guess the generated number! Good luck! PARISBREST CLAFOUTIS BAGUETTE

testing the output gives

Generation of the number to guess

We then need to generate a random number, with the BRETZEL instruction. Stores it in a variable named for example number, and we can print it for debugs purposes.

game.bag

CROISSANT CHOUQUETTE PARISBREST Welcome to the ~~Guessing Game~~ : You have ten tries to guess the generated number! Good luck! PARISBREST CLAFOUTIS BAGUETTE
QUATREQUART CHOUQUETTE PARISBREST number PARISBREST BRETZEL CHOUQUETTE 0 1000 CLAFOUTIS CLAFOUTIS
PAINAUCHOCOLAT CHOUQUETTE PARISBREST The number to guess is: %d PARISBREST MADELEINE CHOUQUETTE PARISBREST number PARISBREST CLAFOUTIS CLAFOUTIS 

which outputs

Declarations

We will need a variable to store the current guess of the player. We will initialize it at -1 which is not in the realm of the game. We will call it this variable current_guess. We need to initialize a variable i at 1 which will be our current guess on the 10 available Finally, we must compare it to the generated number and prints if the user was right!

The equality operator is TIRAMISU and the negation is CHAUSSONAUXPOMMES. We finally have the following code:

game.bag

CROISSANT CHOUQUETTE PARISBREST Welcome to the ~~Guessing Game~~ : You have ten tries to guess the generated number! Good luck! PARISBREST CLAFOUTIS BAGUETTE
QUATREQUART CHOUQUETTE PARISBREST number PARISBREST BRETZEL CHOUQUETTE 0 1000 CLAFOUTIS CLAFOUTIS BAGUETTE
QUATREQUART CHOUQUETTE PARISBREST current_guess PARISBREST -1 CLAFOUTIS BAGUETTE

SABLE TIRAMISU CHOUQUETTE MADELEINE CHOUQUETTE PARISBREST number PARISBREST CLAFOUTIS MADELEINE CHOUQUETTE PARISBREST current_guess PARISBREST CLAFOUTIS CLAFOUTIS 
FRAMBOISIER MUFFIN 
    CROISSANT CHOUQUETTE PARISBREST You won! PARISBREST CLAFOUTIS
COOKIES BAGUETTE 
SABLE CHAUSSONAUXPOMMES CHOUQUETTE TIRAMISU CHOUQUETTE MADELEINE CHOUQUETTE PARISBREST number PARISBREST CLAFOUTIS MADELEINE CHOUQUETTE PARISBREST current_guess PARISBREST CLAFOUTIS CLAFOUTIS CLAFOUTIS
FRAMBOISIER MUFFIN 
    PAINAUCHOCOLAT CHOUQUETTE PARISBREST No! The correct number was: %d PARISBREST MADELEINE CHOUQUETTE PARISBREST number PARISBREST CLAFOUTIS CLAFOUTIS
COOKIES BAGUETTE

After running it we have

The Game Loop

Now that we initialized the game and prepare for the win we need to develop the game, and for this we will need to develop a game loop!

A Step

First we will define a label that is one step of the game, i.e.

• Displaying the player the current guessing number and asking them a new guess
• Storing it in the current_guess variable
• Prints if the guess is higher/lower than the number to guess
• Increments i by one

Labels must be at the top of the file. The instruction to read standard input is ECLAIR. The <= is MERINGUE and we will use the > (TARTE) instead of the negation of <=

game.bag

ICECREAM PARISBREST step PARISBREST
MUFFIN
    PAINAUCHOCOLAT CHOUQUETTE PARISBREST Guess %d/10 PARISBREST MADELEINE CHOUQUETTE PARISBREST i PARISBREST CLAFOUTIS CLAFOUTIS
    CROISSANT CHOUQUETTE PARISBREST Guess! PARISBREST CLAFOUTIS
    QUATREQUART CHOUQUETTE PARISBREST current_guess PARISBREST ECLAIR CHOUQUETTE CLAFOUTIS CLAFOUTIS
    QUATREQUART CHOUQUETTE PARISBREST i PARISBREST CANELE CHOUQUETTE 1 MADELEINE CHOUQUETTE PARISBREST i PARISBREST CLAFOUTIS CLAFOUTIS CLAFOUTIS
    SABLE MERINGUE CHOUQUETTE MADELEINE CHOUQUETTE PARISBREST current_guess PARISBREST CLAFOUTIS MADELEINE CHOUQUETTE PARISBREST number PARISBREST CLAFOUTIS CLAFOUTIS
    FRAMBOISIER MUFFIN 
        PAINAUCHOCOLAT CHOUQUETTE PARISBREST The number %d you guessed is lower than the number to guess! PARISBREST MADELEINE CHOUQUETTE PARISBREST current_guess PARISBREST CLAFOUTIS CLAFOUTIS
    COOKIES 
    SABLE TARTE CHOUQUETTE MADELEINE CHOUQUETTE PARISBREST current_guess PARISBREST CLAFOUTIS MADELEINE CHOUQUETTE PARISBREST number PARISBREST CLAFOUTIS CLAFOUTIS 
    FRAMBOISIER MUFFIN 
        PAINAUCHOCOLAT CHOUQUETTE PARISBREST The number %d you guessed is higher than the number to guess! PARISBREST MADELEINE CHOUQUETTE PARISBREST current_guess PARISBREST CLAFOUTIS CLAFOUTIS
    COOKIES BAGUETTE
COOKIES BAGUETTE
[code...]

adding a PAINVIENNOIS PARISBREST step PARISBREST to the code prints the following

The loop

We need to emulate a for loop. We will create another LABEL called run which will compare the value of i with 10 and act on consequence. We can put a IF statement in run that will call run each time a certain condition have been met. And put our code (for instance calling step) before the statement. This emulates a conditional loop (a while loop) we can use.

game.bag

[...]
ICECREAM PARISBREST run PARISBREST
MUFFIN
    PAINVIENNOIS PARISBREST step PARISBREST 
    SABLE MERINGUE CHOUQUETTE MADELEINE CHOUQUETTE PARISBREST i PARISBREST CLAFOUTIS 10 CLAFOUTIS 
    FRAMBOISIER MUFFIN
        PAINVIENNOIS PARISBREST run PARISBREST
    COOKIES BAGUETTE
COOKIES BAGUETTE
[...]

And call the run label just after the initializing of the game.

The whole game running:

You can see I proceeded by dichotomy, as the logarithm in base 2 of 1000 is a little under 2 (2^10 = 1024) this “game” converges in ten steps. To avoid that and making a true luck game we can do 8 steps. 2^8 = 256 so the game should not be too hard nor this easy to win. The last “the number is lower” is because I used <= to make the comparison. To make this game a true game we should add another label which’s job is to check for equality and run it after the step call in the game loop. But this is irrelevant as this page’s goal is to demonstrate loops not coding a game.

You can find the code for this game here