player_inventory.c

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/*
 * See Licensing and Copyright notice in naev.h
 */
#include "naev.h"
 
#include "player_inventory.h"
 
#include "array.h"
 
static PlayerItem *inventory = NULL; 
 
static void item_free( PlayerItem *pi )
{
   free( pi->name );
}

void player_inventoryClear( void )
{
   for ( int i = 0; i < array_size( inventory ); i++ )
      item_free( &inventory[i] );
   array_free( inventory );
   inventory = NULL;
}

const PlayerItem *player_inventory( void )
{
   return inventory;
}

int player_inventoryAmount( const char *name )
{
   for ( int i = 0; i < array_size( inventory ); i++ ) {
      const PlayerItem *pi = &inventory[i];
      if ( strcmp( pi->name, name ) == 0 )
         return pi->quantity;
   }
   return 0;
}

int player_inventoryAdd( const char *name, int amount )
{
   PlayerItem npi;
   if ( inventory == NULL )
      inventory = array_create( PlayerItem );
 
   for ( int i = 0; i < array_size( inventory ); i++ ) {
      PlayerItem *pi = &inventory[i];
      if ( strcmp( pi->name, name ) == 0 ) {
         pi->quantity += amount;
         return amount;
      }
   }
 
   npi.name     = strdup( name );
   npi.quantity = amount;
   array_push_back( &inventory, npi );
 
   return 0;
}

int player_inventoryRemove( const char *name, int amount )
{
   for ( int i = 0; i < array_size( inventory ); i++ ) {
      PlayerItem *pi = &inventory[i];
      if ( strcmp( pi->name, name ) == 0 ) {
         int q        = pi->quantity;
         pi->quantity = MAX( 0, pi->quantity - amount );
         q -= pi->quantity;
         if ( pi->quantity == 0 ) {
            item_free( pi );
            array_erase( &inventory, &pi[0], &pi[1] );
         }
         return q;
      }
   }
   return 0;
}