Is there a way to position dbInput ?

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CocaCola

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Posted: 9th Dec 2010 04:54 Edited at: 9th Dec 2010 04:58

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+ Code Snippet

#include "DarkGDK.h"

void DarkGDK ( void ) {

dbText(0,0,"Name: ");
char* x = dbInput();


}

I would like to position my dbInput to right after "Name:"

Also how would I make it so after you press enter it moves on with the program (so if you type no more will appear), something like after the dbInput put like
"if( dbKeyState(28) == 1) {"
then just move on with my program and add an extra "}" at the end?

Thanks.

Always program as if the person maintaining your program is a psychopath that knows where you live

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Cuddle Bunniezzz 12

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Posted: 9th Dec 2010 05:20

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Sorry, but I don't think that's do-able. You'll need to create your own text input code, then send it to a char*, which can then send it to dbText().

http://ref.darkgdk.us/ <- Online DarkGDK Refernece. More content coming soon.

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CocaCola

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Posted: 9th Dec 2010 05:45

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How would I create my own input?

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Mireben

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Posted: 9th Dec 2010 07:54 Edited at: 9th Dec 2010 07:59

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There is a dbSetCursor command that positions the text cursor, so - according to the help - the next dbPrint will use that position. Maybe it works for positioning dbInput cursor as well, try it out.

I once wrote a text input function that stores the typed characters and watches for Backspace as well. It would also solve positioning because you can use dbText to output the input string. There are two versions of the function here, in two posts of mine, if you are interested:

http://forum.thegamecreators.com/?m=forum_view&t=160546&b=22

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CocaCola

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Posted: 9th Dec 2010 19:58 Edited at: 9th Dec 2010 20:03

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Thank you, the set cursor thing worked.
This is my new code:

+ Code Snippet

#include "DarkGDK.h"

void DarkGDK ( void ) {

dbSetCursor(45,0);
dbText(0,0,"Name: ");
char* x = dbInput();
dbCLS();
dbText(0,0,dbStr((int)x));
dbWaitKey();

}

But after I press enter when i have my name it shows numbers instead of letters. I also tried char instead of int and also numbers. Whats wrong?

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Cuddle Bunniezzz 12

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Posted: 9th Dec 2010 23:07

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Get rid of that "dbStr()", What it does is convert any number to a string with the number as the string's value.

Ex:

the number 42 becomes "42", as a string. Just put "x" in there as the parameter.

http://ref.darkgdk.us/ <- Online DarkGDK Refernece. More content coming soon.

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CocaCola

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Posted: 9th Dec 2010 23:46 Edited at: 10th Dec 2010 02:23

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Oh wow cuddle bunniezzz 12 it worked, i thought it was needed to stop an error. Thanks.
Now another, I want it so after I press enter it says "Hello (name)"
This comes up with a few errors, so how do I make it work?

+ Code Snippet

dbText(0,0,"Hello "x);

Ohh and with this code (I still need help with the one above though) I want if my name is "Brett" to say "woohoo!" but if not then for it to end the program. No matter what i do it says "woohoo!"

+ Code Snippet

#include "DarkGDK.h"

void DarkGDK ( void ) {

dbSetCursor(45,0);
dbText(0,0,"Name: ");
char* x = dbInput();
dbCLS();
dbText(0,0,x);
dbWaitKey();
if(x="Brett"){
	dbCLS();
	dbText(0,0,"woohoo!");
	dbWaitKey();
}
dbEnd();

}]

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Mireben

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Posted: 10th Dec 2010 17:49 Edited at: 10th Dec 2010 17:51

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You can't just write variables after each other like "Hello "x, that doesn't work. If you want to write two strings after each other, you need either two dbText cmmands, or you need to use string concatenation commands (like strcat) to join the two strings into a temporary string buffer (char array).

http://www.cplusplus.com/reference/clibrary/cstring/strcat/

There are two problems with this one:

+ Code Snippet

if(x="Brett")

First, comparison is double equal sign like this: ==. Be always careful of that. If you just put one equal sign, that makes the variable equal to the second value, so the "if" condition will always be true.

Second, even if you correct the code to double equal sign, it will not work because you can't compare two strings this way. Writing x == "Brett" will compare the pointers to the strings, not the contents of the strings. (In that case, the pointers will never be equal, so the code will be bad the opposite way.) You need to use a string comparison function, like strcmp:

http://www.cplusplus.com/reference/clibrary/cstring/strcmp/

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CocaCola

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Posted: 10th Dec 2010 23:53

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OK, mireben, I tried this and it doesnt work. It just freezes after the name is shown.

+ Code Snippet

#include "DarkGDK.h"
#include <stdio.h>
#include <string.h>

void DarkGDK ( void ) {

dbSetCursor(45,0);
dbText(0,0,"Name: ");
char* x = dbInput();
char szKey[] = "Brett";
char szInput[80];
dbCLS();
do {
dbText(0,0,x);
dbWaitKey();
gets (szInput);
} while (strcmp (szKey,szInput) != 0);
	dbCLS();
	dbText(0,0,"woohoo!");
	dbWaitKey();
dbEnd();

}

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Mireben

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Posted: 11th Dec 2010 10:40

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You are mixing together your program and the usage example given on the C++ site. It would have been enough to correct the string comparison in the original code:

+ Code Snippet

#include "DarkGDK.h"

void DarkGDK ( void ) {
	dbSetCursor(45,0);
	dbText(0,0,"Name: ");
	char* x = dbInput();
	dbCLS();
	dbText(0,0,x);
	dbWaitKey();

	if (strcmp(x, "Brett") == 0) {
		dbCLS();
		dbText(0,0,"woohoo!");
		dbWaitKey();
	}

	//dbEnd(); // you don't need this
}

And if you want to display "Hello, name!" then there are a few solutions, this is one:

+ Code Snippet

	char* x = dbInput();
	dbCLS();

	char Buffer[50];
	strcpy(Buffer, "Hello, ");
	strcat(Buffer, x);
	strcat(Buffer, "!");
	dbText(0,0,Buffer);

	dbWaitKey();

Note that there is no length check here, so if the typed-in string is very long, it will overrun the buffer and cause an error. To make this safer, you can use strncat which has an additional parameter, the maximum number of characters to be copied:

+ Code Snippet

	strcpy(Buffer, "Hello, ");
	strncat(Buffer, x, 40);

Other solutions can be:
- using several dbText or dbSetCursor + dbPrint commands to print out the parts of the string one by one, but that's not very beautiful or practical,
- using sprintf (or sprintf_s) with %s pattern to put a string inside another,
- using std::string class and put parts of the strings together using the + or += operator or the built-in functions of that string class, but then you need a bit longer syntax to pass the string to dbText.

You can read more on the usage of different string functions on cplusplus.com.

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CocaCola

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Posted: 12th Dec 2010 22:46 Edited at: 12th Dec 2010 22:51

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I am trying this code:

+ Code Snippet

#include "DarkGDK.h"

void DarkGDK ( void ) {
	dbSetCursor(45,0);
	dbText(0,0,"Name: ");
	char* x = dbInput();
	dbCLS();
	dbText(0,0,x);
	dbWaitKey();

	if (strcmp(x, "Brett") == 0) {
		dbCLS();
		dbText(0,0,"woohoo!");
		dbWaitKey();
	}
	if (strcmp(x, "Brett") == 1) {
		dbCLS();
		dbText(0,0,"Loooserr!");
		dbWait(3000);
	}

	dbCLS(); 
	char Buffer[50];
	strcpy(Buffer, "Hello, ");
	strncat(Buffer, x, 40);
	strcat(Buffer, x);
	strcat(Buffer, "!");
	dbText(0,0,Buffer);
	dbWaitKey();

}

I type in Brett, when I get to the Hello, Brett! part it says "Hello, BrettBrett!"

EDIT: huge mistake, put two of them, haha, fixed.

+ Code Snippet

#include "DarkGDK.h"

void DarkGDK ( void ) {
	dbSetCursor(45,0);
	dbText(0,0,"Name: ");
	char* x = dbInput();
	dbCLS();
	dbText(0,0,x);
	dbWaitKey();

	if (strcmp(x, "Brett") == 0) {
		dbCLS();
		dbText(0,0,"woohoo!");
		dbWaitKey();
	}
	if (strcmp(x, "Brett") == 1) {
		dbCLS();
		dbText(0,0,"Loooserr!");
		dbWaitKey();
	}

	dbCLS(); 
	char Buffer[50];
	strcpy(Buffer, "Hello, ");
	strncat(Buffer, x, 40);
	strcat(Buffer, "!");
	dbText(0,0,Buffer);
	dbWaitKey();

}

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jhonebill

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Posted: 16th Dec 2010 10:05

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great pal it work also.. regards..

jhonebill

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Dark GDK / Is there a way to position dbInput ?