Reading from file,

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Reading from file, #202894
04/17/08 22:14 04/17/08 22:14

Joined: Mar 2008
Posts: 67

crumply

OP
Junior Member

crumply

OP
Junior Member

Joined: Mar 2008
Posts: 67

I am making a dialogue system for my game and I am trying to load my text from a file. The file contains

the number of rows
opcode(number) actor(number) text(characters)

So I made a struct:

Code:

typedef struct { 
  int opcode; 
  int actor; 
  char textstr[100];
} DIALOGUE;  // defines a struct type named "SPOT"

and then in my script, a bunch of them

Code:

DIALOGUE* speechbank[10000];

and then wrote a function to populate them from the file. Except I get an invalid pointer error!

Here's my function

Code:

function loadtexts()
{
	var i = 0;	//Temp loop var
	var maxentries = 0;	//This is the number of dialogue entries to be read.
	filehandle = file_open_read("%APPDIR%//dialogue.txt"); // opens the file dialogue to read
	statustext = "File opened";
	wait (100);
		maxentries = file_var_read(filehandle);		//how many entries are there in this file?
		//Time for a loop
		while (i < maxentries)
		{
			speechbank[i].opcode = file_var_read(filehandle);
			speechbank[i].actor = file_var_read(filehandle);
			file_str_read(filehandle,speechbank[i].textstr);  
			i++;
		}
	file_close(filehandle); // closes the file 	
}

Any help demisifying this one would be great.

Re: Reading from file, [Re: crumply] #202913 04/17/08 23:51 04/17/08 23:51
Joined: Jan 2002 Posts: 4,225 Germany / Essen Uhrwerk Expert
Uhrwerk Expert Joined: Jan 2002 Posts: 4,225 Germany / Essen	I guess you have not allocated the memory for the structs you want to store in the array. Code: while (i < maxentries) { // First allocate the memory needed. speechbank[i] = (DIALOGUE*)malloc(sizeof(DIALOGUE); speechbank[i].textstr = str_create("#128"); // Then you can read the data and store it in the array. speechbank[i].opcode = file_var_read(filehandle); speechbank[i].actor = file_var_read(filehandle); file_str_read(filehandle,speechbank[i].textstr); i++; } Does that solve your problem? Always learn from history, to be sure you make the same mistakes again...

Re: Reading from file, [Re: Uhrwerk] #202915 04/18/08 00:03 04/18/08 00:03
Joined: Mar 2008 Posts: 67 crumply OP Junior Member
crumply OP Junior Member Joined: Mar 2008 Posts: 67	No but it makes better sense than what I was doing. Still get error in function loadtexts. I don't know what to do. I could use an separate array for each but that seems crude.

Re: Reading from file, [Re: crumply] #202916 04/18/08 00:06 04/18/08 00:06
Joined: Jan 2002 Posts: 4,225 Germany / Essen Uhrwerk Expert
Uhrwerk Expert Joined: Jan 2002 Posts: 4,225 Germany / Essen	So what does the error message exactly say? Can you pin down the error message to a line, that causes the crash using printf? Always learn from history, to be sure you make the same mistakes again...

Re: Reading from file, [Re: Uhrwerk] #202917 04/18/08 00:13 04/18/08 00:13
Joined: Mar 2008 Posts: 67 crumply OP Junior Member
crumply OP Junior Member Joined: Mar 2008 Posts: 67	it's when it reaches file_str_read(filehandle,speechbank[i].textstr); but ONLY the 2nd time around the loop :S EDIT: I changed while (i < maxentries) to while (i < maxentries)-1 when that happened. When I changed it back it did it the first time around the loop! Last edited by crumply; 04/18/08 00:16.

Re: Reading from file, [Re: crumply] #202918 04/18/08 00:19 04/18/08 00:19
Joined: Jan 2002 Posts: 4,225 Germany / Essen Uhrwerk Expert
Uhrwerk Expert Joined: Jan 2002 Posts: 4,225 Germany / Essen	Now I am confused. Can you please post the code you have in loadtexts again? Always learn from history, to be sure you make the same mistakes again...

Re: Reading from file, [Re: Uhrwerk] #202920
04/18/08 00:23 04/18/08 00:23

Joined: Mar 2008
Posts: 67

crumply

OP
Junior Member

crumply

OP
Junior Member

Joined: Mar 2008
Posts: 67

The Struct:

Code:

typedef struct { 
  int* opcode; 
  int* actor; 
  char* textstr[128];
} DIALOGUE;  // defines a struct type named "SPOT"

Using the Struct:

Code:

var filehandle;

DIALOGUE* speechbank[10000];

The function:

Code:

function loadtexts()
{
	var i = 0;	//Temp loop var
	var maxentries = 0;	//This is the number of dialogue entries to be read.
	filehandle = file_open_read("dialogue.txt"); // opens the file dialogue to read
	wait (100);
	maxentries = file_var_read(filehandle);		//how many entries are there in this file?
//		//Time for a loop
	while (i < maxentries)
{
	// First allocate the memory needed.
	speechbank[i] = (DIALOGUE*)malloc(sizeof(DIALOGUE));
	printf("Ok so far");
	speechbank[i].textstr = str_create("#128");
	// Then you can read the data and store it in the array.
	printf("Ok so far");
	speechbank[i].opcode = file_var_read(filehandle);
	printf("Ok so far");
	speechbank[i].actor = file_var_read(filehandle);
	printf("Ok so far");
	file_str_read(filehandle,speechbank[i].textstr); 
	printf("Ok so far kk"); 
	i++;
}
	file_close(filehandle); // closes the file 	
	return(1);
}

The data:

Code:

3
1 0 This is a test
1 1 This is the second text
0 1 This is the third with close opcode

Also, if you have IRC or anything similar I would like to speak to you $\:\)$

Last edited by crumply; 04/18/08 00:24.

Re: Reading from file, [Re: crumply] #202924
04/18/08 00:55 04/18/08 00:55

Joined: Jan 2002
Posts: 4,225
Germany / Essen

Uhrwerk

Expert

Uhrwerk

Expert

Joined: Jan 2002
Posts: 4,225
Germany / Essen

What about this version:

Code:

#include <acknex.h>

typedef struct { 
  int opcode; 
  int actor; 
  STRING* textstr;
} DIALOGUE;  // defines a struct type named "SPOT"


var filehandle;

DIALOGUE* speechbank[10000];



function loadtexts()
{
	var i = 0;	//Temp loop var
	var maxentries = 0;	//This is the number of dialogue entries to be read.
	filehandle = file_open_game("dialogue.txt"); // opens the file dialogue to read
	wait (100);
	maxentries = file_var_read(filehandle);		//how many entries are there in this file?
//		//Time for a loop
	while (i < maxentries)
{
	// First allocate the memory needed.
	speechbank[i] = (DIALOGUE*)malloc(sizeof(DIALOGUE));
	speechbank[i].textstr = str_create("#128");
	// Then you can read the data and store it in the array.
	speechbank[i].opcode = file_var_read(filehandle);
	speechbank[i].actor = file_var_read(filehandle);
	file_str_read(filehandle,speechbank[i].textstr); 
	i++;
}
	file_close(filehandle); // closes the file 	
	return(1);
}

void main()
{
	loadtexts();	
}

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