Coding feedable pets.

[ohstereo]

Alright, all day I've been looking at this tutorial: http://kofk.de/?p=howto

But this guy doesn't give me any help at all on what I should be doing..

I know he's telling me to read those articles, but that won't help. =/

 

So far, I have my image: http://prettyknives.net/pf/bg.jpg

My script: http://prettyknives.net/pf/sample.php

 

CODE:

<?php
// Begin Constant definitions
define('BACKGROUND', 'bg.jpg');
// End definitions

$image = imagecreatefromjpeg(BACKGROUND);

$hp = calculateHitpoints();

drawHitpointBar($image, $hp);

writeName($image, "Pet Name");	

// Output
header("Content-Type: image/jpeg");	
imagejpeg($image, "", 95);	
?>

<?php

function calculateHitpoints(){

$feed = isset($_GET['feed']);
}

$hp = loadFromDatafile(DATAFILE);

$hp -= (int)((time() - filemtime(DATAFILE)) / DRAIN);

// Insert these somewhere in the constants definition block
define('DATAFILE', "petdata.dat");
define('DRAIN', 300);
define('FOODVALUE', 10); 
define('MAXHP', 300); 

function calculateHitpoints(){

$feed = isset($_GET['feed']);

$hp = loadFromDatafile(DATAFILE); 

$hp -= (int)((time() - filemtime(DATAFILE)) / DRAIN);

if ($feed) 
	$hp += FOODVALUE;

if ($hp > MAXHP) 
	$hp = MAXHP;

if ($hp < 1) 
	$hp = 1;

if ($feed)
	saveToDatafile($hp, DATAFILE); 

return $hp;
}

// Insert these somewhere in the constants definition block
define('BAR_X', 10);
define('BAR_Y', 200);
define('BAR_MAXWIDTH', 400);
define('BAR_HEIGHT', 6);
define('BAR_R', 0xdd);
define('BAR_G', 0x5a);
define('BAR_B', 0x7c);

function paintHPBar($image, $hp) {

$width = ceil(BAR_MAXWIDTH * $hp / MAXHP);

$bar_color = imagecolorallocate($image, BAR_R, BAR_G, BAR_B);

imagefilledrectangle($image, BAR_X, BAR_Y, BAR_X + $width, 
			BAR_Y + BAR_HEIGHT, $bar_color);
}

// Insert these somewhere in the constants definition block
define('NAME_X', 20);
define('NAME_Y', 160);
define('NAME_R', 0x4f);
define('NAME_G', 0x66);
define('NAME_B', 0x81);
// GD has 5 built-in fonts, called 1, 2, 3, 4, and 5
define('FONT', 5);
//If you want to use TTF, you need these
define('ANGLE', 0);
define('FONTSIZE', 14);
define('FONTFILE', 'arial.ttf');

function writeName($image, $name) {

$text_color = imagecolorallocate($image, NAME_R, NAME_G, NAME_B);

// If you want to use a font file
imagettftext($image, FONTSIZE, ANGLE, NAME_X, NAME_Y, 
			$text_color, FONTFILE, $name);

// Else, use one of the built-in fonts
imagestring($image, FONT, NAME_X, NAME_Y, $name, $text_color);
}
?>

 

I just need someone to guide me through this.

 

Thank you! <3

[uwannadonkey]

well 1) that image is WAY small, think about resizing it!

 

and 2, post your code in a [ code ] [/ code] format, without spaces please

[ohstereo]

That's the image size I want to use, they're pixel pets. =P

But I have to change the filetype, JPG is utter crap.

And I posted the code. =]

[uwannadonkey]

im not a pro like some people, but i can see some errors, mainly the error u see on the sample page:

 

drawHitpointBar($image, $hp);

 

its not set, you need to set it

something like

 

function drawHitpointbar($image,$hp)

{

what happens, blah blah

}

 

[uwannadonkey]

Fatal error: Call to undefined function: drawhitpointbar() in /home/prettykn/public_html/pf/sample.php on line 10

 

so i think its what i said, i MAY be wrong..

[uwannadonkey]

misclicked*delete post!

[ohstereo]

Yeah, but I don't understand what happens there.

 

See this?

// Insert these somewhere in the constants definition block
define('BAR_X', 10);
define('BAR_Y', 200);
define('BAR_MAXWIDTH', 400);
define('BAR_HEIGHT', 6);
define('BAR_R', 0xdd);
define('BAR_G', 0x5a);
define('BAR_B', 0x7c);

function paintHPBar($image, $hp) {

$width = ceil(BAR_MAXWIDTH * $hp / MAXHP);

$bar_color = imagecolorallocate($image, BAR_R, BAR_G, BAR_B);

imagefilledrectangle($image, BAR_X, BAR_Y, BAR_X + $width, 
			BAR_Y + BAR_HEIGHT, $bar_color);
}

 

The guy didn't explain what each define means. =P

[uwannadonkey]

that code, defines the size of the image. presumably the bar.  but thats not your problem

 

your problem is function drawHitpointbar

 

its not a function, but you wrote it like it is.

 

what is the purpose of that function? or is it not ur code?

[ohstereo]

It's not my code, I'm trying to customize this guy's code: http://kofk.de/?p=howto

But he doesn't explain it very well.

 

What would happen if I just got rid of it?

[lifutushi]

Fatal error: Call to undefined function: drawhitpointbar() in /home/prettykn/public_html/pf/sample.php on line 10

 

so i think its what i said, i MAY be wrong..

 

i'm a newbie so i might be wrong, but shouldn't you check the case first>

[dbillings]

His tutorial is kind of crap, the drawHitpointBar($image, $hp) function magically transforms into paintHPBar($image, $hp), but the way you have your script posted it calls the function drawHitpointBar($image, $hp) before you define it. Even though the function changes to paintHPBar(). If PHP is what your interested in learning his tutorial is a little advanced and poorly written. Try w3schools.com

[keeB]

sample.php is broken

[ohstereo]

It's not broken anymore.

But the error is still there.

 

I don't have a clue what it is. =[

[keeB]

 

drawHitpointBar($image, $hp);

 

 

You need to code this function

[uwannadonkey]

I ONLY SAID THAT 6 HOURS AGO

 

lol sorry