commodity.h

/*
 * See Licensing and Copyright notice in naev.h
 */
#pragma once

#include <stdint.h>
 
#include "opengl_tex.h"
 
#define ECON_CRED_STRLEN                                                       \
   32 
#define ECON_MASS_STRLEN                                                       \
   32 
 
typedef int64_t credits_t;
#define CREDITS_MAX                                                            \
   ( ( (credits_t)1 )                                                          \
     << 53 ) 
#define CREDITS_MIN                                                            \
   ( -CREDITS_MAX ) 
#define CREDITS_PRI PRIu64
 
#define COMMODITY_FLAG_STANDARD                                                \
   ( 1 << 0 ) 
#define COMMODITY_FLAG_ALWAYS_CAN_SELL                                         \
   ( 1 << 1 ) 
#define COMMODITY_FLAG_PRICE_CONSTANT                                          \
   ( 1 << 2 ) 
#define commodity_isFlag( c, f )                                               \
   ( ( c )->flags & ( f ) ) 
#define commodity_setFlag( c, f )                                              \
   ( ( c )->flags |= ( f ) ) 
#define commodity_rmFlag( c, f )                                               \
   ( ( c )->flags &= ~( f ) ) 

typedef struct CommodityModifier_ {
   char                      *name;
   float                      value;
   struct CommodityModifier_ *next;
} CommodityModifier;

typedef struct Commodity_ {
   char        *name;        
   char        *description; 
   unsigned int flags;       
 
   /* Prices. */
   char *price_ref; 
   double     price_mod; 
   double     raw_price; 
   double     price;     
   glTexture *gfx_store; 
   glTexture *gfx_space; 
 
   /* Misc stuff. */
   credits_t
      lastPurchasePrice; 
   int  istemp;          
   int *illegalto;       
 
   /* Dynamic economy stuff. */
   CommodityModifier
         *spob_modifier; 
   double period;        
   double population_modifier; 
   CommodityModifier
      *faction_modifier; 
} Commodity;
 
typedef struct CommodityPrice_ {
   double price;      
   double spobPeriod; 
   double sysPeriod;  
   double spobVariation; 
   double sysVariation; 
   int64_t updateTime; 
   char *name;         
   double
      sum; 
   double sum2; 
   int cnt;     
} CommodityPrice;
 
/*
 * Commodity stuff.
 */
Commodity *commodity_getAll( void );
Commodity *commodity_get( const char *name );
Commodity *commodity_getW( const char *name );
int        commodity_getN( void );
 
Commodity *commodity_getByIndex( const int indx );
int        commodity_load( void );
void       commodity_free( void );
 
int commodity_checkIllegal( const Commodity *com, int faction );
 
/*
 * Temporary commodities.
 */
int        commodity_isTemp( const char *name );
Commodity *commodity_newTemp( const char *name, const char *desc );
int        commodity_tempIllegalto( Commodity *com, int faction );
 
/*
 * Misc stuff.
 */
void credits2str( char *str, credits_t credits, int decimals );
void price2str( char *str, credits_t price, credits_t credits, int decimals );
void tonnes2str( char *str, int tonnes );
int  commodity_compareTech( const void *commodity1, const void *commodity2 );
Commodity **standard_commodities( void );