Nilorea Library
C utilities for networking, threading, graphics
ex_fluid_config.c

functions for fluid configuration

functions for fluid configuration

Author
Castagnier MickaŽl aka Gull Ra Driel
Version
1.0
Date
29/12/2021
#include "ex_fluid_config.h"
#include "nilorea/n_str.h"
int load_app_state( char *state_filename , size_t *WIDTH , size_t *HEIGHT , bool *fullscreen , char **bgmusic , double *drawFPS , double *logicFPS , N_FLUID *fluid , int *threaded )
{
__n_assert( state_filename , return FALSE );
__n_assert( fluid , return FALSE );
if( access( state_filename , F_OK ) != 0 )
{
n_log( LOG_INFO , "no app state %s to load !" , state_filename );
return FALSE ;
}
/* N_STR *data = NULL ;
data = file_to_nstr( state_filename );
if( !data )
{
n_log( LOG_ERR , "Error reading file %s, defaults will be used" , state_filename );
return FALSE;
}
cJSON *monitor_json = cJSON_Parse( _nstr( data ) );
if (monitor_json == NULL)
{
const char *error_ptr = cJSON_GetErrorPtr();
n_log( LOG_ERR , "%s: Error before: %s, defaults will be used", state_filename , _str( error_ptr ) );
cJSON_Delete( monitor_json );
free_nstr( &data );
return FALSE ;
}
cJSON *value = NULL ;
value = cJSON_GetObjectItemCaseSensitive( monitor_json, "width" ); if( cJSON_IsNumber( value ) ){ (*WIDTH) = value -> valueint ; } else { n_log( LOG_ERR , "width is not a number"); }
value = cJSON_GetObjectItemCaseSensitive( monitor_json, "height" ); if( cJSON_IsNumber( value ) ){ (*HEIGHT) = value -> valueint ; } else { n_log( LOG_ERR , "height is not a number"); }
value = cJSON_GetObjectItemCaseSensitive( monitor_json, "fullscreen" ); if( cJSON_IsNumber( value ) ){ (*fullscreen) = value -> valueint ; } else { n_log( LOG_ERR , "fullscreen is not a number"); }
value = cJSON_GetObjectItemCaseSensitive( monitor_json, "bg-music" ); if( cJSON_IsString( value ) ){ (*bgmusic) = strdup( value -> valuestring ); } else { n_log( LOG_ERR , "bg-music is not a string"); }
value = cJSON_GetObjectItemCaseSensitive( monitor_json, "drawFPS" ); if( cJSON_IsNumber( value ) ){ (*drawFPS) = value -> valuedouble ; } else { n_log( LOG_ERR , "drawFPS is not a number"); }
value = cJSON_GetObjectItemCaseSensitive( monitor_json, "logicFPS" ); if( cJSON_IsNumber( value ) ){ (*logicFPS) = value -> valuedouble ; } else { n_log( LOG_ERR , "logicFPS is not a number"); }
cJSON_Delete(monitor_json);
free_nstr( &data );
*/
int errors = 0 ;
CONFIG_FILE *config = load_config_file( state_filename , &errors );
if( !config )
{
n_log( LOG_ERR, "Unable to load config file from %s", state_filename );
return FALSE ;
}
if( errors != 0 )
{
n_log( LOG_ERR, "There were %d errors in %s. Check the logs !", errors, state_filename );
return FALSE ;
}
/* default section, only one should be allocated. Let's test it ! */
int nb = get_nb_config_file_sections( config, "__DEFAULT__" );
for( int it = 0 ; it < nb ; it++ )
{
char *value = NULL ;
value = get_config_section_value( config, "__DEFAULT__", it, "width", 0 );
if( value ) (*WIDTH) = atoi( value );
value = get_config_section_value( config, "__DEFAULT__", it, "height", 0 );
if( value ) (*HEIGHT) = atoi( value );
value = get_config_section_value( config, "__DEFAULT__", it, "fullscreen", 0 );
if( value ) (*fullscreen) = atoi( value );
value = get_config_section_value( config, "__DEFAULT__", it, "bg-music", 0 );
if( value ) (*bgmusic) = strdup( value );
value = get_config_section_value( config, "__DEFAULT__", it, "drawFPS", 0 );
if( value ) (*drawFPS) = strtold( value , NULL );
value = get_config_section_value( config, "__DEFAULT__", it, "logicFPS", 0 );
if( value ) (*logicFPS) = strtold( value , NULL );
value = get_config_section_value( config, "__DEFAULT__", it, "numIters", 0 );
if( value ) fluid -> numIters = atoi( value );
value = get_config_section_value( config, "__DEFAULT__", it, "density", 0 );
if( value ) fluid -> density = strtold( value , NULL );
value = get_config_section_value( config, "__DEFAULT__", it, "gravity", 0 );
if( value ) fluid -> gravity = strtold( value , NULL );
value = get_config_section_value( config, "__DEFAULT__", it, "overRelaxation", 0 );
if( value ) fluid -> overRelaxation = strtold( value , NULL );
value = get_config_section_value( config, "__DEFAULT__", it, "fluid_production_percentage", 0 );
if( value ) fluid -> fluid_production_percentage = strtold( value , NULL );
value = get_config_section_value( config, "__DEFAULT__", it, "cScale", 0 );
if( value ) fluid -> cScale = strtold( value , NULL );
value = get_config_section_value( config, "__DEFAULT__", it, "threadedProcessing", 0 );
if( value ) (*threaded) = atoi( value );
}
/*data = file_to_nstr( state_filename );
if( !data )
{
n_log( LOG_ERR , "Error reading file %s, defaults will be used" , state_filename );
return FALSE;
}
cJSON *monitor_json = cJSON_Parse( _nstr( data ) );
if (monitor_json == NULL)
{
const char *error_ptr = cJSON_GetErrorPtr();
n_log( LOG_ERR , "%s: Error before: %s, defaults will be used", state_filename , _str( error_ptr ) );
cJSON_Delete( monitor_json );
free_nstr( &data );
return FALSE ;
}
cJSON *value = NULL ;
value = cJSON_GetObjectItemCaseSensitive( monitor_json, "numIters" ); if( cJSON_IsNumber( value ) ){ fluid -> numIters = value -> valueint ; } else { n_log( LOG_ERR , "numIters is not a number"); }
value = cJSON_GetObjectItemCaseSensitive( monitor_json, "density" ); if( cJSON_IsNumber( value ) ){ fluid -> density = value -> valuedouble ; } else { n_log( LOG_ERR , "density is not a number"); }
value = cJSON_GetObjectItemCaseSensitive( monitor_json, "gravity" ); if( cJSON_IsNumber( value ) ){ fluid -> gravity = value -> valuedouble ; } else { n_log( LOG_ERR , "gravity is not a number"); }
value = cJSON_GetObjectItemCaseSensitive( monitor_json, "overRelaxation" ); if( cJSON_IsNumber( value ) ){ fluid -> overRelaxation = value -> valuedouble ; } else { n_log( LOG_ERR , "overRelaxation is not a number"); }
value = cJSON_GetObjectItemCaseSensitive( monitor_json, "fluid_production_percentage" ); if( cJSON_IsNumber( value ) ){ fluid -> fluid_production_percentage = value -> valuedouble ; }else { n_log( LOG_ERR , "fluid_production_percentage is not a number"); }
value = cJSON_GetObjectItemCaseSensitive( monitor_json, "cScale" ); if( cJSON_IsNumber( value ) ){ fluid -> cScale = value -> valuedouble ; } else { n_log( LOG_ERR , "cScale is not a number"); }
value = cJSON_GetObjectItemCaseSensitive( monitor_json, "threadedProcessing" ); if( cJSON_IsNumber( value ) ){ (*threaded) = value -> valueint ; } else { n_log( LOG_ERR , "threadedProcessing is not a number"); }
cJSON_Delete(monitor_json);
free_nstr( &data ); */
destroy_config_file( &config );
return TRUE ;
}
#define __n_assert(__ptr, __ret)
macro to assert things
Definition: n_common.h:276
CONFIG_FILE * load_config_file(char *filename, int *errors)
load a config file
Definition: n_config_file.c:51
char * get_config_section_value(CONFIG_FILE *cfg_file, char *section_name, int section_position, char *entry, int entry_position)
Function to parse sections and get entries values.
int destroy_config_file(CONFIG_FILE **cfg_file)
Destroy a loaded config file.
int get_nb_config_file_sections(CONFIG_FILE *cfg_file, char *section_name)
Get the number of config file with section_name.
Structure of a config file.
Definition: n_config_file.h:41
#define n_log(__LEVEL__,...)
Logging function wrapper to get line and func.
Definition: n_log.h:74
#define LOG_ERR
error conditions
Definition: n_log.h:58
#define LOG_INFO
informational
Definition: n_log.h:64
structure of a fluid
Definition: n_fluids.h:54
Config file reading and writing.
fluid management port from "How to write an Eulerian fluid simulator with 200 lines of code",...
N_STR and string function declaration.