This is a documentation for Board Game Arena: play board games online !

Game layout: view and template: yourgamename.view.php and yourgamename yourgamename.tpl

From Board Game Arena
Jump to navigation Jump to search

Game File Reference

Overview



Useful Components

Official

  • Deck: a PHP component to manage cards (deck, hands, picking cards, moving cards, shuffle deck, ...).
  • Draggable: a JS component to manage drag'n'drop actions.
  • Counter: a JS component to manage a counter that can increase/decrease (ex: player's score).
  • ExpandableSection: a JS component to manage a rectangular block of HTML than can be displayed/hidden.
  • Scrollmap: a JS component to manage a scrollable game area (useful when the game area can be infinite. Examples: Saboteur or Takenoko games).
  • Stock: a JS component to manage and display a set of game elements displayed at a position.
  • Zone: a JS component to manage a zone of the board where several game elements can come and leave, but should be well displayed together (See for example: token's places at Can't Stop).

Undocumented component (if somebody knows please help with docs)

  • Wrapper: a JS component to wrap a <div> element around its child, even if these elements are absolute positioned.

Unofficial



Game Development Process



Guides for Common Topics



Miscellaneous Resources

Overview

Bga-pages-from-templates.PNG

There are two files involved in overall game layout: yourgamename.view.php and yourgamename_yourgamename.tpl.

These files work together to provide the HTML layout of your game.

Using these 2 files, you specify what HTML is rendered in your game client interface.

In .tpl file you can directly write raw HTML that will be displayed by the browser.

Example: extract of "hearts_hearts.tpl":

  <div id="myhand_wrap" class="whiteblock">
    <h3>{MY_HAND}</h3>
    <div id="myhand">
    </div>
  </div>

Things is curly braces are template variables. You cannot put any engish text directly there.

Your view and your template supposed to generate only the BASE layout of the game.

You shouldn't try to setup the current game situation in the view: this is the role of your Javascript code. Why? Because you'll have to write Javascript code to put game elements in place anyway, and you don't want to write it twice :)

Example of things to generate in your view:

  • The overall layout of your game interface (what is displayed where).
  • The board and fixed elements on the board (ex: places for cards, squares, ...).
  • The tokens which are always on the board (but JS code may move them around during setup)

Example of things that shouldn't be generate by your view:

  • Game elements that come and go from the game area.
  • Game elements that normally hidden from players (other players cards, cards in the deck).

Template system

BGA is using the phplib template system, used for example in PHPbb forums.

More details about how to use phplib template system here: https://web.archive.org/web/20170506065401/http://www.phpbuilder.com:80/columns/david20000512.php3

Variables

In your template (.tpl) file, you can use variables. Then in your view (.view.php) file, you fill these variables with values.

In the example above, "{MY_HAND}" is a variable. As you can see, a variable is uppercase characters surrounded by "{" and "}".

This is example of how to assign values to these variables in .view.php:

Examples:


   // Display a translated version of "My hand" at the place of the variable in the template
   $this->tpl['MY_HAND'] = self::_("My hand");

   // Display some raw HTML material at the place of the variable
   $this->tpl['MY_HAND'] = self::raw( "<div class='myhand_icon'></div>" );

WARNING: do not use a variable called {id} as it will interfere with action buttons.

WARNING: do not use a variable called {LB_[whatever]} as any variable starting with LB_ will interfere with the translation system.

Template Blocks

Using "blocks", you can repeat a piece of HTML from your template several time.

You should use "blocks" whenever you have a block of HTML that must be repeated many times. For example, for Reversi, we have to generate 64 (8x8) squares:


(in reversi_reversi.tpl)

<div id="board">
    <!-- BEGIN square -->
        <div id="square_{X}_{Y}" class="square" style="left: {LEFT}px; top: {TOP}px;"></div>
    <!-- END square -->
    
    <div id="discs">
    </div>
</div>

(in reversi.view.php)

 $this->page->begin_block( "reversi_reversi", "square" );
        
 $hor_scale = 64.8;
 $ver_scale = 64.4;
 for( $x=1; $x<=8; $x++ ) {
    for( $y=1; $y<=8; $y++ ) {
       $this->page->insert_block( "square", array(
         'X' => $x,
         'Y' => $y,
         'LEFT' => round( ($x-1)*$hor_scale+10 ),
         'TOP' => round( ($y-1)*$ver_scale+7 )
        ) );
    }        
 }

Explanations:

  • You specify a block in your template file, using "BEGIN" and "END" keywords as xml comment. In the example above, we are creating a block named "square".
  • In your view, you declare your block using "begin_block" method.
  • Then, you can insert as many block as you want to, using "insert_block" method.

The insert_block method takes 2 parameters:

  • the name of the block to insert.
  • an associative array you can use to assign values to template variables of this block. In the example above, there are 4 parameters in the block (X, Y, LEFT and TOP).

Nested blocks

You can use nested blocks. In the example below, we are going to add a mini-board for each player of the game, with 4 card places on each of it:


(In template file)

<!-- BEGIN player -->
    <div class="miniboard" id="miniboard_{PLAYER_ID}">

        <div class="card_places">
            <!-- BEGIN card_place -->
            <div id="card_place_{PLAYER_ID}_{PLACE_ID}">
            </div>
            <!-- END card_place -->
        </div>

    </div>
<!-- END player -->
  
(In view file)

$this->page->begin_block( "mygame_mygame.tpl", "card_place" ); // Nested block must be declared first
$this->page->begin_block( "mygame_mygame.tpl", "player" );

foreach( $players as $player_id => $player ) {
    // Important: nested block must be reset here, otherwise the second player miniboard will
    //  have 8 card_place, the third will have 12 card_place, and so one...
    $this->page->reset_subblocks( 'card_place' ); 

    for( $i=1; $i<=4; $i++ ) {
       $this->page->insert_block( "card_place", array( 
             'PLAYER_ID' => $player_id,
             'PLACE_ID' => $i
          )
       );
    }

    $this->page->insert_block( 'player', array( 'PLAYER_ID' => $player_id );
}

Javascript templates

For game elements that come and go from the game area, we suggest you to define a Javascript template.

These will allow to separate all html from javascript and php files and keep it strictly in template file.

A Javascript template is defined in your template file like this:

(Reversi Token from Reversi example):

<script type="text/javascript">

// Templates

var jstpl_disc='<div class="disc disccolor_${color}" id="disc_${xy}"></div>';

</script>  

Note: a section for javascript templates is already available at the end of your template skeleton file.

Then, you can use this javascript template to insert this piece of HTML in your game interface, like this:

    dojo.place( this.format_block( 'jstpl_disc', {
           xy: x+''+y,
           color: color
    } ) , 'discs' );

WARNING: always use lowercase for substitution variables in your Javascript templates, in order to avoid collision with phplib template variables (in particular, do not use ${ID}).

Note that you must translate any text arguments passed to this.format_block() that will be rendered on the screen, for example using "_()".

How to access game information from .view.php

From your .view.php, you can access the following:

Access current player id

  global $g_user;
  $current_player_id = $g_user->get_id();

Access game object

In your view file, "$this->game" contains an instance of your main game class.

Example:


   // Access to some game elements description described in your "material.inc.php":
   $my_cards_types = $this->game->card_types;

   // Access to any (public) method defined in my .game.php file:
   $result = $this->game->myMethod();


Access spectator status

For spectators (players who are not part of the game but just spectating it) you must be careful of displaying all public information, but no private information.

In your view file, you can use $this->game->isSpectator() to know if the player is not part of the game, and adapt the interface to this case.