What do you need help with? Version 5

[hexpunK]

[QUOTE=ShaunOfTheLive;36521269]Yeah, but then every time you open the spreadsheet it'll be like "MACROS MAY BE DANGEROUS WHARRGARBL"[/QUOTE]

Only if you have the security stuff turned on :v:, you can turn it off entirely. but it does open you up to some damaging macros.

[antid2]

[lua]

audio = "/Assets/Audio/"
graphics = "/Assets/Graphics/"
IsDown = love.keyboard.isDown

function love.load()
ship = love.graphics.newImage( graphics.."ship.png" )
bullet = love.graphics.newImage( graphics.."bullet.png" )

x = 200
y = 200
speed = 200
rotation = 0
BulletSpeed = 100

end

function love.draw()
love.graphics.draw( ship, x, y, rotation, 1, 1, 63, 39 )
end

function love.update( dt )

--normal directions
if IsDown( "d" ) then
x = x + ( speed *dt )
rotation = 1.6
elseif IsDown( "a" ) then
x = x - ( speed * dt )
rotation = 4.7
end
if IsDown( "s" ) then
y = y + ( speed * dt )
rotation = 3.18
elseif IsDown( "w" ) then
y = y - ( speed * dt )
rotation = 0
end

--8 directional
if IsDown( "d" ) and IsDown( "s" ) then
rotation = 2.5
elseif IsDown( "a" ) and IsDown( "s" ) then
rotation = 3.8
end
if IsDown( "d" ) and IsDown( "w" ) then
rotation = 0.5
elseif IsDown( "a" ) and IsDown( "w" ) then
rotation = -0.8
end

--controls
if IsDown( " " ) then
love.graphics.draw( bullet, x, y )
end

end

function love.keypressed( key )
if key == "escape" then
love.event.push( "quit" )
end
end
[/lua]

first time messing with LOVE, wondering if anyone can lend me a hand? i'm trying to use the space to spawn a "bullet" from the ship and have it just shoot off in a path..normal bullet..but either i'm not reading their wiki enough or i'm just too tired for this but i can't seem to figure out how to create an object at an origin and have it fly off.

[Darkwater]

First, create an object to contain all the bullets. When you press space, add an object to that container with the folloring properties: x, y, speedx, speedy, rotation.
Each frame you loop through all the bullets where you add speedx to x and add speedy to y, and do bullet logic like destroying ships.
Lastly ofcourse, draw all bullets using x, y and rotation.

[Daggoth]

I'm trying to code a roguelike using libtcod as a basic c++ project. I'm competent in Java and I used c++ long long ago but I'm really trying to do some OOP stuff now that I had never touched before. Basically what I am trying to do is define a base class Object that is used for everything, then a derived class Organism, that has stats and movement and that kind of thing, and finally a third class derived from Organism which is Player. I can derive Organism from Object just fine, but I run into problems when I try to derive Player from Organism. Why?

[flayne]

[QUOTE=Daggoth;36539347]I'm trying to code a roguelike using libtcod as a basic c++ project. I'm competent in Java and I used c++ long long ago but I'm really trying to do some OOP stuff now that I had never touched before. Basically what I am trying to do is define a base class Object that is used for everything, then a derived class Organism, that has stats and movement and that kind of thing, and finally a third class derived from Organism which is Player. I can derive Organism from Object just fine, but I run into problems when I try to derive Player from Organism. Why?[/QUOTE]

Post code pls.

[Daggoth]

//Object.h


class Object {
	int x;
	int y;
	int c;
	char displayName[];
public:
	Object(int,int,int);
	void moveObj(int, int);
	void setPos(int,int);
	void setDisplayName(char[]);
};


//Organism.h

class Organism : public Object{
	int HitPoints;
	void HandleTurn();
};

//Player.h

class Player : public Organism {
	void HandleInput();
};

[flayne]

[QUOTE=Daggoth;36539693]

//Object.h


class Object {
	int x;
	int y;
	int c;
	char displayName[];
public:
	Object(int,int,int);
	void moveObj(int, int);
	void setPos(int,int);
	void setDisplayName(char[]);
};


//Organism.h

class Organism : public Object{
	int HitPoints;
	void HandleTurn();
};

//Player.h

class Player : public Organism {
	void HandleInput();
};

[/QUOTE]

char DisplayName[] <-- This is bad. Very bad. Use const char *DisplayName. DisplayName[] is an unsized array which means your structs cannot be copied properly and initialization is strange.
setDisplayName <-- Change that to accept const char* instead of char[].

You may want to also post whatever error messages you are getting.

[swift and shift]

[QUOTE=Sethorion;36521288]Hey guys, I've created a simple PHP script that uploads a file. It also allows you to create and edit text files as well as create directories. I got it to work ages a go but for some reason It's suddenly not working.

If anyone here could look at it and try to get it working for me, I would MASSIVELY appreciate it.

[url=http://www.gamefront.com/files/21910078/upload.zip]Here's the link to the code.[/url][/QUOTE]

holy christ that is bad

[T3hGamerDK]

[QUOTE=swift and shift;36547733]holy christ that is bad[/QUOTE]

Could you elaborate on how and why it's bad, instead of just saying it is? You're not exactly being helpful to the developer.

[swift and shift]

[QUOTE=T3hGamerDK;36547907]Could you elaborate on how and why it's bad, instead of just saying it is? You're not exactly being helpful to the developer.[/QUOTE]

[b]upload.php[/b]

<?php

	$dir = $_POST['name'];
	mkdir($dir);
	header("location: index.php");


?>

arbitrary directory creation anywhere in the filesystem the webserver can write to

[b]delete.php[/b]

<?php

	$dir = $_GET['dir'];
	rmdir($dir);
	//$file = $_GET['name'];
	//unlink($file);
	header("location: index.php");
//$file = $_GET['name'];
//$dir = $_GET['dir'];

//unlink($file);

//echo "File Deleted! <a href='index.php'>Click here to continue </a>";

?>

same thing but with deletion

[b]index.php[/b]

<html>

	<form action="create.php" method="POST">
		Enter the name of the folder: <input type="text" name="name">
		<input type="submit" value="Create">
	</form>
	
	<form method="post" enctype="multipart/form-data">
		<input type="hidden" name="upload" value="1">
		<input type="file" name="file">
		<input type="submit" value="Upload">
	</form>
	<p><a href="upload/index.php" >Click here to create, edit and delete a text document.</a></p>
	
</html>

<?php
	$path = ".";

	$dir = opendir($path) or die ("Unable to open directory");
	
	while($file = readdir($dir))
	{
		if($file == "." || $file == ".." || $file == "index.php" || $file == "upload" || $file == "delete.png" || $file == "create.php" || $file == "delete.php") 
		
		continue;
		
		echo "<a href='$file'>$file</a><a href='delete.php?dir=$file'><img src='delete.png'></a><br>";
	}
	
	closedir($dir);
	
	if($_POST[upload] == "1")
	{
	$to = "./".$_FILES['file']['name'];
	move_uploaded_file($_FILES['file']['tmp_name'], $to);
	echo "Uploaded";
	print "<meta http-equiv=\"refresh\" content=\"0;URL=index.php\">";
	}
	
?>

data outputted as html is not properly sanitized, leading to an xss vulnerability. $_FILES["file"]["name"] is user controlled, hence there's an arbitrary file write vulnerability anywhere on the file system.

[b]upload/create_file.php[/b]

<?PHP
	$pre_file_name = $_POST['name'];
	$ext = ".txt";
	$file_name = $pre_file_name.$ext;
	fopen($file_name,'w');
?>

<html>
	<form action="edit_file.php" method="POST">
		Enter Text: <BR> <textarea name="edit" cols="100" rows="20"></textarea>
		<input type="hidden" name="file_name" value="<?PHP echo $file_name ?>">
		<input type="submit" value="Save">
	</form>
</html>

xss vulnerability, arbitrary file creation/truncation anywhere on the filesystem

[b]upload/delete.php[/b]

<?PHP
	$file = $_GET['name'];
	unlink($file);
	echo("File Deleted: <a href='index.php'> Click here to continue</a>")
?>

arbitrary file deletion

[b]upload/edit.php[/b]

<?PHP
	$file_name = $_GET['name'];
	$file_read = fopen($file_name,"r");
	$contents = fread($file_read, filesize($file_name));
	fclose($file_read);
?>

<html>
	<form action="edit_file.php" method="POST">
		<textarea name="edit" cols="100" rows="20"><?PHP echo ($contents);?> </textarea>
		<input type="hidden" name="file_name" value="<?PHP echo ($file_name); ?>">
		<input type="submit" value="save">
	</form>
</html>

arbitrary file read, xss

[b]upload/edit_file.php[/b]

<?PHP
	$edit = $_POST['edit'];
	$file_name = $_POST['file_name'];
	$file = fopen($file_name, 'w');
	fwrite($file, $edit);
	fclose($file);
	echo "File Saved <a href='index.php'> Click here to continue</a>";
?>

arbitrary file write

[b]upload/index.php[/b]

<html>
	<a href="../index.php">Back</a>
	<form action="create_file.php" method="POST">
	File Name:<input type="text" name="name">
	<input type="submit" value="Create File">
	</form>
</html>

<?PHP
	$full_path = ".";
	$dir = @opendir($full_path) or die ("unable to open");
	while($file = readdir($dir)){
		if($file == "." || $file == ".." || $file == "index.php" || $file == "create_file.php" || $file == "edit.php" || $file == "edit_file.php" || $file == "delete.php" )
		continue;
		echo "<a href = '$file'>$file</a> .....<a href='edit.php?name=$file'>Edit </a> ..... <a href='delete.php?name=$file'>Delete</a><BR>";
	}
	closedir($dir);
?>

xss

[Johnny on Flame]

I have a huge issue with OpenGLes 1 and Android NDK
I can't enable or disable the GL_DEPTH_TEST flag natively, for some reason it just doesn't work.
I would be grateful for a way to fix it, work around it or a method for calling java functions/broadcasting intents from the native app (NDK Lib) to my Java app.

Thanks in advance

[flayne]

[QUOTE=JohnnyOnFlame;36551117]I have a huge issue with OpenGLes 1 and Android NDK
I can't enable or disable the GL_DEPTH_TEST flag natively, for some reason it just doesn't work.
I would be grateful for a way to fix it, work around it or a method for calling java functions/broadcasting intents from the native app (NDK Lib) to my Java app.

Thanks in advance[/QUOTE]

Have you set up a depth buffer? If you have call glGetLastError and see what comes up.

[editline]29th June 2012[/editline]

How the hell do I remove a google code project???

[Johnny on Flame]

[QUOTE=flayne;36551579]Have you set up a depth buffer? If you have call glGetLastError and see what comes up.

[editline]29th June 2012[/editline]

How the hell do I remove a google code project???[/QUOTE]

No, I didnt't setup one, and I don't know how do you do it.
Also, glGetError gave me no decent clue.

[grimpunch]

I would like some advice if anyone knows the best frameworks for someone to use when developing for android phones? I'm experienced in OGRE, and Unity. But looking to branch out. :)

[flayne]

[QUOTE=JohnnyOnFlame;36552263]No, I didnt't setup one, and I don't know how do you do it.
Also, glGetError gave me no decent clue.[/QUOTE]

You can't use depth test without a depth buffer where's OpenGL going to get the depth's to test?

[Pelf]

I want to try programming some 2d games in C#. Does anyone know where I might be able to get the source code for some games that I can refer to?

[rrkpp_]

[QUOTE=Pelf;36554562]I want to try programming some 2d games in C#. Does anyone know where I might be able to get the source code for some games that I can refer to?[/QUOTE]

google "open source c# game"

[mrtilepy]

I'm trying to add a suffix to a file name in C, and then pass it into fopen as seen below.

[cpp]
int main() {
char file_name[MAX_PATH], new_file_name[MAX_PATH];
char str[3] = { 'n', 'e', 'w' };
char ext[4] = { '.', 't', 'x', 't' };

new_file_name = &append_fname(file_name, str, ext); // how do I convert a char * into a char[]?
fp = fopen(new_file_name, "w+");

// other code

return 0;
}

char *append_fname(char fname[], char _str[], char _ext[]) {
char new_fname[MAX_PATH];
char *ret;
int i, j, k;
int ls = sizeof(_str) / sizeof(char);
int le = sizeof(_ext) / sizeof(char);
for(i = MAX_PATH; i >= 0; i--) {
if(fname[i] == '.') {
for(j = 0; j < (ls + le); ++j) {
if(j < ls)
new_fname[i + j] = _str[j];
else
new_fname[i + j] = _ext[j - ls];
}
}
else
new_fname[i] = fname[i];
}

ret = malloc(sizeof(new_fname));
if(ret == NULL) return NULL;
ret = (char *)new_fname;

return ret;
}
[/cpp]

I'm not sure how to convert a char * into a char[]. Any ideas?

[Richy13]

[QUOTE=swift and shift;36548411] php code [/QUOTE]

I dont understand why this is an argument for php being bad?

[rrkpp_]

[QUOTE=Richy19;36554869]I dont understand why this is an argument for php being bad?[/QUOTE]

..it isnt

[Mete]

how people usually load .obj objects in opelGL with SFML?

[Overv]

[QUOTE=Mete;36555073]how people usually load .obj objects in opelGL with SFML?[/QUOTE]

I think a lot of people around here write their own parser, because .obj is a pretty simple format. Otherwise you can use a library like [url=http://people.cs.kuleuven.be/~ares.lagae/libobj/index.html]libobj[/url].

[flayne]

[QUOTE=MrTilepy;36554756]I'm trying to add a suffix to a file name in C, and then pass it into fopen as seen below.

[cpp]
int main() {
char file_name[MAX_PATH], new_file_name[MAX_PATH];
char str[3] = { 'n', 'e', 'w' };
char ext[4] = { '.', 't', 'x', 't' };

new_file_name = &append_fname(file_name, str, ext); // how do I convert a char * into a char[]?
fp = fopen(new_file_name, "w+");

// other code

return 0;
}

char *append_fname(char fname[], char _str[], char _ext[]) {
char new_fname[MAX_PATH];
char *ret;
int i, j, k;
int ls = sizeof(_str) / sizeof(char);
int le = sizeof(_ext) / sizeof(char);
for(i = MAX_PATH; i >= 0; i--) {
if(fname[i] == '.') {
for(j = 0; j < (ls + le); ++j) {
if(j < ls)
new_fname[i + j] = _str[j];
else
new_fname[i + j] = _ext[j - ls];
}
}
else
new_fname[i] = fname[i];
}

ret = malloc(sizeof(new_fname));
if(ret == NULL) return NULL;
ret = (char *)new_fname;

return ret;
}
[/cpp]

I'm not sure how to convert a char * into a char[]. Any ideas?[/QUOTE]

First I don't think you understand char[]. char[] is interpreted by the compiler as char * and I recommend you use that type instead (never use unsized array types). Second that sizeof directive won't work. It will return 4 most likely, to get the size use strsize. Third you should make new_fname a dynamically allocated char* (use malloc after you have gotten the size that way you're not wasting space and don't have to be worried about a limit). As far as syntax goes you can treat new_fname as if it was the same old char[], you can get rid of ret, and you can return new_fname. PS. Your strings should be null terminated not period terminated if you don't know what this means you need to seriously research strings more.

[stringy]

Is there any reason I shouldn't represent a 2d array of characters as a 1d char array in C? A lot of operations seem more straightforward when it's a 1d array, but I feel like a 2d array is more intuitive all around.

[backwardspy]

[QUOTE=Richy19;36554869]I dont understand why this is an argument for php being bad?[/QUOTE]
It's not; he's pointing out why the code itself is written badly.

[editline]29th June 2012[/editline]

[QUOTE=Rayjingstorm;36555295]Is there any reason I shouldn't represent a 2d array of characters as a 1d char array in C? A lot of operations seem more straightforward when it's a 1d array, but I feel like a 2d array is more intuitive all around.[/QUOTE]
Don't take my word on this but I [I]think[/I] behind the scenes a 2D array is essentially the same as 1D array anyway. So just do whatever feels more natural and easy to you from a code standpoint.

[flayne]

[QUOTE=Rayjingstorm;36555295]Is there any reason I shouldn't represent a 2d array of characters as a 1d char array in C? A lot of operations seem more straightforward when it's a 1d array, but I feel like a 2d array is more intuitive all around.[/QUOTE]

Well the only way to use a 2D array is to have all the strings be the same size. I don't think this would be practical for most purposes but there is no real reason not to unless you need it to be a return value or passed to functions (so it really only works as a global variable). As Chris220 mentions I'm pretty sure that 2D arrays are 1D arrays in the background. So id[1][3] is basically 1 + 3*number of columns.

[swift and shift]

[QUOTE=Richy19;36554869]I dont understand why this is an argument for php being bad?[/QUOTE]

are you dumb

[Richy13]

[QUOTE=swift and shift;36556006]are you dumb[/QUOTE]

Rude, I simply didnt read your comments properly to get that you were outlining his code.

[Darkwater]

[QUOTE=swift and shift;36556006]are you dumb[/QUOTE]

You should calm down, there's no need to shout at everyone who makes a tiny mistake. You do that all the time.
[B]
=====[/B]

[img]http://new.tinygrab.com/7cfbd517837cc231f7920affab3240564bafc77c8f.png[/img]

Of course..

[Johnny on Flame]

[QUOTE=flayne;36553952]You can't use depth test without a depth buffer where's OpenGL going to get the depth's to test?[/QUOTE]

No dude, like, I can enable/disable it, and it works.
But problem is, that can only be done on the Java part of my app, when I really need it to work on the native, glEnable/Disableing it gives me nothing on native, while it DOES on the java part.