clearing data when starting a new state?

Programming Questions

ep.queens

clearing data when starting a new state?

in Programming Questions • 3 years ago

In the statements below I'm trying to let the user add a number to their "guess". I've used keyPressed==s to get to state 2.

The problem is that when I press s to get to state2, the s becomes the first digit of my guess. Is there a way to start state 2 after the s is processed or somehow ignore the letter s? Any help is much appreciated.

if (state==2) {

background(#009933);

int y=45, x=10;

draw_game();

if (key=='h'|| key=='H')

state=1;

else guess += key;

}

Replies(3)

bejoschac..

Re: clearing data when starting a new state?

3 years ago

There are various solutions to this problem. One is, that you do not catch "keyPressed" but "keyReleased" and make If-cases within the funcition, f.e.

int state;
String guess;
void setup()
{
guess="";
state=1;
}
void draw()
{
    println("state:"+state+" guess:"+guess);
}

void keyReleased()
{
if (state==2)
    {
      if (key==ENTER) state=1;
      else guess += key;
    }
   else if (key=='s') state=2;
}

ep.queens

Re: Re: clearing data when starting a new state?

3 years ago

i appreciate your speedy reply, but it didn't work.. my explanation may not be clear.. please try the game and lemme know your thoughts... the code for my simple game:

int state = 0;

int MAXGUESS=10;

String secret = "";

String guess = "";

String [] guesses = new String[MAXGUESS];

int counter=0;

int nguess=0;

void setup() {

size(650,480);

secret += char('1'+ int(random(5)));

println(secret);

}

int hint1() {

int h1 = 0;

println("guess="+guess);

if(secret.indexOf(guess.charAt(0))>=0)

h1 = h1 + 1;

if(secret.indexOf(guess.charAt(1))>=0)

h1 = h1 + 1;

if (secret. indexOf(guess.charAt(2))>=0)

h1 = h1 + 1;

return h1;

}

int hint2() {

int h2 = 0;

if(guess.charAt(0)==secret.charAt(0))

h2 = h2 + 1;

if(guess.charAt(1)==secret.charAt(1))

h2 = h2 + 1;

if(guess.charAt(2)==secret.charAt(2))

h2 = h2 + 1;

return h2;

}

void keyPressed() {

if(state==0) {

background(#009933);

draw_intro();

if(key=='h'|| key=='H')

state=1;

if(key=='s'|| key=='S')

state=2;

}

if (state==1) {

background(#009933);

draw_help();

if(key=='s'||key=='S')

state=2;

}

if (state==2) {

background(#009933);

int y=45, x=10;

draw_game();

guess="";

// while (nguess < MAXGUESS){

if(key=='h'|| key=='H')

state=1;

else //if (key=='0'||key=='1'||key=='2'||key=='3'||key=='4'||key=='5'||key=='6'||key=='7'||key=='8'||key=='9')

guess += key;

println("guess: " + guess);

if (guess.length()==3) {

y = y+20;

int h1 = hint1();

int h2 = hint2();

println ("hint: "+ h1 + h2);

text (h1 + " " + h2, 325, y);

}

//}

if (guess.charAt(0)== secret.charAt(0) && guess.charAt(1)== secret.charAt(1)&& guess.charAt(2)== secret.charAt(2)) {

state = 4;

draw_win();

}

if (nguess > MAXGUESS) {

state = 3;

draw_lose();

}

//0 - intro screen

//1 - help screen

//2 - game screen

//3 - end screen lose

//4 - end screen win

void draw_intro() {

background(#009933);

fill(#ffffff);

text("Welcome to the number guessing game!", 155, 65);

text("Press 'S' to start.", 225, 125);

text("Press 'H' for help.", 225, 145);

}

void draw_help() {

background(#009933);

fill(#ffffff);

text("OBJECTIVE: Correctly guess the secret code.", 10, 25);

text("INSTRUCTIONS: Using only digits 1-5, enter a 3-digit code. You will then be",10,65);

text("given a hint. The first digit of the hint is the number of times one of your",10, 85);

text("guessed digits appears in the secret code. The second digit is the number of",10, 105);

text("digits that appear in the correct location.",10, 125);

text("EXAMPLE: Secret Code is 123.",10, 165);

text(" Your guess is 135.",10,185);

text(" The hint would be 21.",10, 205);

text("EXPLANATION:",10, 245);

text("The first digit tells us that 2 of my guesses appear in the code.",10, 265);

text("The second digit tells us that 1 of my guesses appears in the correct location.",10,285);

text("Press 'S' to start.",10, 325);

}

void draw_lose() {

background(#009933);

fill(#ffffff);

text("Sorry. Try again.",155,65);

}

void draw_win() {

background(#009933);

fill(#ffffff);

text("You WIN!");

}

void draw_game() {

fill(#ffffff);

stroke(#ffffff);

strokeWeight(3);

text("GUESS: ", 10,25);

text("HINT: ", 325,25);

line(10,35,640,35);

line(305,35,305,475);

int x = 10, y = 65;

text(guess, 10, 65);

for(int row=0; row < nguess; row++) {

text(guesses[row],x,y);

y=y+20;

}

void draw() {

PFont arial;

arial= loadFont("Arial-Black-48.vlw");

textFont(arial, 15);

if(state==0)

draw_intro();

if (state==1)

draw_help();

if (state==2)

draw_game();

if (state==3)

draw_lose();

if (state==4)

draw_win();

}

bejoschac..

Re: clearing data when starting a new state?

3 years ago

There are a couple of things which you should rearrange:

void setup()

is run exactly once at the beginning and should be used to initialize the main sketch-parameters such as

loading fonts, defining the size etc. You do NOT want to relead the font each time the screen is refreshed (within draw() )

Although it is possible to initialize the variables in the setup() it might be a better idear to do this in a separate function, e.g. "InitiMe()" and then call this function from within setup(). You can then later call InitMe() again to start a new game.

(One could call setup() as well, but I've been told that this is not a good idea as one doesn't want to do some of the main things more than once in a sketch (e.g. setting the size, loading a font...)

void draw()

This is the main routine which gets called repeatedly so this is where you want to do all of your screen-drawing (branching off depending on the 'state', as you do.)

void keyPressed() or void keyReleased()

These function catch the key, but you should not do any "drawing" in them, or you might end up with conflicting results of the draw() function. I often prefer keyReleased() because one can "release" a key only once and thus gets one-key => one raction. The keyPressed() function can get recalled each time draw() is refreshed and thus gives you repeated action.

I think if you rearrange your sketch, you should be able to overcome your problem.

Use the keyPressed() function purely to switch the states and (in state 2) modify the guess-string.

All other actions should be performed within the draw() funciton, depending on the state.

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