lib/taxplaner.php

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<?php
/***************************************************************************
 This program is free software; you can redistribute it and/or
 modify it under the terms of the GNU General Public License
 as published by the Free Software Foundation; either version 2
 of the License, or (at your option) any later version.

 This program is distributed in the hope that it will be useful,
 but WITHOUT ANY WARRANTY; without even the implied warranty of
 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 GNU General Public License for more details.

 You should have received a copy of the GNU General Public License
 along with this program; if not, write to the Free Software
 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
 ***************************************************************************/

class Taxplaner
{
    var $intGrowth;     
    var $intInflTax;    
    var $intTax;        
    var $intWorker;     
    var $intFood;       
    var $intFoodBase;   
    var $intUnit;       
    var $intBuild;      
    var $intGold;       
    var $intTotalFood;  

    function Taxplaner ( )
    {
    }

    function set ( $intGrowth, $intInflTax, $intTax, $intWorker, $intFood, $intFoodBase, $intUnit, $intBuild, $intGold )
    {
        $this->intGrowth    = $intGrowth;
        $this->intInflTax   = $intInflTax;
        $this->intTax       = $intTax;
        $this->intWorker    = $intWorker;
        $this->intFood      = $intFood;
        $this->intFoodBase  = $intFoodBase;
        $this->intUnit      = $intUnit;
        $this->intBuild     = $intBuild;
        $this->intGold      = $intGold;
        $this->intTotalFood = $this->intFood + $this->intFoodBase;
    }

    function taxCalc ( $intStartTax, $intEndTax )
    {
        // check params
        $intStart = min ( $intStartTax, $intEndTax );
        $intEnd = max ( $intStartTax, $intEndTax );

        $aReturn = array();
        for ( $i = $intStart; $i<$intEnd; $i++)
        {
            $aReturn[$i] = $this->getTax ( $i );
        }
        return $aReturn;
    }

    function getTax ( $intTax = 0 )
    {
        if ( $intTax == 0 )
        {
            if ( !$this->intTax )
            {
                // no tax value set
                return false;
            }
            $intTax = $this->intTax;
        }

        $intTotalWorker = 650 - $intTax * 25 + $this->intGrowth * 10;
        $intFreeWorker  = $intTotalWorker - $this->intWorker;
        $intTaxIncome   = round ( $intFreeWorker * 1.5 * $intTax / 100 * ( 1 + $this->intInflTax / 100 ) );
        $intFoodNeeded  = round ( $intFreeWorker / 2.5);
        $intFood        = $this->intTotalFood - ( 5 * ( $this->intBuild + $this->intUnit ) + $intFoodNeeded );
        $intGold        = $intTaxIncome + $this->intGold - ( 5 * ( $this->intBuild + $this->intUnit ) );
        return array ( 'tax' => $intTax, 'gold' => $intGold, 'food' => $intFood );
    }

    function getTaxDetails ( $intTax = 0 )
    {
        if ( $intTax == 0 )
        {
            if ( !$this->intTax )
            {
                // no tax value set
                return false;
            }
            $intTax = $this->intTax;
        }

        $intTotalWorker = 650 - $intTax * 25 + $this->intGrowth *10;
        $intFreeWorker  = $intTotalWorker - $this->intWorker;
        $intTaxIncome   = round ( $intFreeWorker * 1.5 * $intTax / 100 * ( 1 + $this->intInflTax / 100 ) );
        $intFoodNeeded  = round ( $intFreeWorker / 2.5 );
        $intFood        = $this->intTotalFood - ( 5 * ($this->intBuild + $this->intUnit ) + $intFoodNeeded );
        $intGold        = $intTaxIncome + $this->intGold - ( 5 * ( $this->intUnit + $this->intBuild ) );
        return array ( 'workers_sum' => $intTotalWorker,
                       'workers_free' => $intFreeWorker,
                       'tax_income' => $intTaxIncome,
                       'food_production' => $this->intTotalFood,
                       'food_needed' => $intFoodNeeded,
                       'food' => $intFood,
                       'gold' => $intGold );
    }
}

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