cfweather.cpp File Reference

#include "global.h"
#include "server.h"
#include "map.h"
#include "object.h"
#include "output_file.h"
#include "sproto.h"
#include <string.h>
#include <assert.h>
#include <math.h>

Include dependency graph for cfweather.cpp:

Go to the source code of this file.

Data Structures
struct	DensityConfig
	Structure to hold density data entries. More...
struct	weather_avoids_t
	Defines a tile the weather system should avoid. More...
struct	weather_grow_t
	Defines a tile where something can grow. More...
struct	weather_replace_t
	Defines a tile the weather system can change to another tile. More...
struct	weather_settings_t
	Weather settings definition structure Stolen from the settings file, as they are unused by everything that isn't weather. More...
struct	weathermap_t
	This is an overlay structure of the whole world. More...

Macros
#define	BLUE   2
#define	EQUATOR_BASE_TEMP   30 /* C */
#define	GREEN   1
#define	GULF_STREAM_BASE_SPEED   40 /* base speed of gulf stream */
#define	GULF_STREAM_WIDTH   3 /* width of gulf stream */
#define	POLAR_BASE_TEMP   0 /* C */
#define	PRESSURE_AREA   180
#define	PRESSURE_ITERATIONS   30
#define	PRESSURE_MAX   1040
#define	PRESSURE_MIN   960
#define	PRESSURE_ROUNDING_FACTOR   2
#define	PRESSURE_ROUNDING_ITER   1
#define	PRESSURE_SPIKES   3
#define	RED   0
#define	SEASONAL_ADJUST   10 /* polar distance */
#define	SKY_BLIZZARD   16
#define	SKY_CLEAR   0
#define	SKY_FOG   7
#define	SKY_HAIL   8
#define	SKY_HEAVY_RAIN   5
#define	SKY_HEAVY_SNOW   15
#define	SKY_HURRICANE   6
#define	SKY_LIGHT_RAIN   3
#define	SKY_LIGHT_SNOW   13 /* add 10 to rain to get snow */
#define	SKY_LIGHTCLOUD   1
#define	SKY_OVERCAST   2
#define	SKY_RAIN   4 /* rain -> storm has lightning */
#define	SKY_SNOW   14
#define	WEATHER_NO_FLOOR   2 /* If set, we clear FLAG_IS_FLOOR */
#define	WEATHER_NO_SAVE   4 /* If set, we set FLAG_NO_SAVE */
#define	WEATHER_OVERLAY   1 /* If set, we set FLAG_OVERLAY_FLOOR */
	Weather insert flags. More...
#define	WEATHERMAPTILESX   100
#define	WEATHERMAPTILESY   100
#define	WIND_FACTOR   4.0
	This is a multiplier for the wind caused by pressure differences. More...

Functions
static object *	avoid_weather (int *const av, const mapstruct *m, const int x, const int y, int *const gs, const int grow)
	Check the current square to see if we should avoid this one for weather processing. More...
static void	calculate_temperature (mapstruct *m)
	Temperature is used in a lot of weather function. More...
void	cfweather_close ()
void	cfweather_init (Settings *settings, ServerSettings *serv)
	Weather module initialisation. More...
static void	change_the_world (mapstruct *const m)
	Process worldmap regrowth. More...
static int	check_replace_match (const object *ob, const weather_replace_t *rep_struct)
	Refactor the code to look for arch or object name as it's own code. More...
static void	command_weather (object *op, const char *params)
	Player is wondering about the weather. More...
void	compute_sky ()
	Let the madness, begin. More...
static void	do_map_precipitation (mapstruct *const m)
	Do the precipitation for a given map. More...
static void	do_precipitation (mapstruct *const m, const int x, const int y, const int temp, const int sky)
	Handle adding precipitation to the map. More...
static int	do_water_elev_calc (mapstruct *const m, const int x, const int y, int *const water, int64_t *const elev, int *const trees)
	Do the water and elevation updates on the given map tile. More...
static void	do_weather_insert (mapstruct *const m, int x, int y, const archetype *at, const int8_t object_flags, uint16_t material, int insert_flags)
	Do an object insert for weather effects. More...
static int	get_config_tile (const int x, const int y, const mapstruct *m, const DensityConfig *list)
	Get config tile retrieves the desired tile's associated value from a given space. More...
static char *	get_next_field (char *line)
	Finds the start of the next field in the provided string Skips past interceding commas and spaces. More...
static int	humid_tile (const int x, const int y, const int dark)
	Calculate the humidity of the given weather tile. More...
static int	init_config_vals (const Settings *settings, const char *conf_filename, DensityConfig **list)
	Read a config file that tells how many units (for an arbitrary purpose) a given arch is worth during calculations. More...
static void	init_gulfstreammap ()
	Initialize the gulf stream. More...
static void	init_humid_elev (const Settings *settings)
	Initialize humidity, water, forestry, and elevation. More...
static void	init_pressure ()
	Reset pressure map. More...
static void	init_rainfall ()
	Initialize rainfall. More...
static void	init_temperature ()
	Initialize the temperature based on the time. More...
static int	init_weather_replace (const Settings *settings, const char *conf_filename, weather_replace_t **list)
	Load the weather replacement definitions from file. More...
static void	init_weather_settings (Settings *settings)
static int	init_weatheravoid (const Settings *settings, const char *conf_filename, weather_avoids_t **wa)
	Load the weather/growth avoid defintions from file. More...
static void	init_wind ()
	Initialize the wind randomly. More...
static void	let_it_snow (mapstruct *const m)
	Put or remove snow. More...
static int	load_humidity_map_part (mapstruct **m, const int dir, const int x, const int y, int *const tx, int *const ty)
	Method to abstract some of the mess of the humidity map. More...
static void	perform_pressure ()
	Perform small randomizations in the pressure map. More...
void	perform_weather ()
	This routine slowly loads the world, patches it up due to the weather, and saves it back to disk. More...
static void	plant_a_garden (mapstruct *const m)
	Process growth of various plants. More...
static void	plot_gulfstream ()
	Plot the gulfstream map over the wind map. More...
static int	polar_distance (int x, int y, const int equator)
	Calculates the distance to the nearest pole. More...
void	process_rain ()
	Keep track of how much rain has fallen in a given weathermap square. More...
static int	read_elevmap (const Settings *settings)
	Load the elevation information. More...
static int	read_forestrymap (const Settings *settings)
	Read the forestry map from the localdir. More...
static int	read_gulfstreammap (const Settings *settings)
	Read the gulf stream, or initialize it if no saved information. More...
static int	read_humidmap (const Settings *settings)
	Attempt to read humidity information, or barring that, read the maps and initialize elevation, humidity, water, and forestry maps. More...
static int	read_pressuremap (const Settings *settings)
	Read the pressure information from disk. More...
static int	read_rainfallmap (const Settings *settings)
	Read or initialize rainfall information. More...
static int	read_temperaturemap (const Settings *settings)
	Load or initialize temperature information. More...
static int	read_watermap (const Settings *settings)
	Load water information from localdir. More...
static int	read_weatherposition (const Settings *settings)
	Read the weather map position from file. More...
static int	read_winddirmap (const Settings *settings)
	Read the wind direction. More...
static int	read_windspeedmap (const Settings *settings)
	Read the wind speed. More...
static int	real_temperature (int x, int y, const timeofday_t *tod)
	Compute the real (adjusted) temperature of a given weathermap tile. More...
int	real_world_temperature (int x, int y, mapstruct *m)
	Compute the temperature for a specific square. More...
static void	singing_in_the_rain (mapstruct *const m)
	Process rain. More...
static void	smooth_pressure ()
	This code simply smooths the pressure map. More...
static void	smooth_wind ()
	It doesn't really smooth it as such. More...
static void	spin_globe ()
	The world spinning drags the weather with it. More...
static void	temperature_calc (const int x, const int y, const timeofday_t *tod)
	Calculate temperature of a spot. More...
void	tick_weather ()
	Do the weather calculations in order. More...
static void	update_humid ()
	Update the humidity for all weathermap tiles. More...
static int	weather_clock_listener (int *type,...)
	Global clock event handling for weather. More...
static void	weather_effect (mapstruct *const m)
	Perform actual effect of weather. More...
static int	weather_listener (int *type,...)
	Global event handling for weather. More...
static int	weather_object_listener (int *type,...)
	Global object-process handling for weather. More...
static char *	weathermap_to_worldmap_corner (const int wx, const int wy, int *const x, int *const y, const int dir, char *const buffer, const int bufsize)
	Return the path of the map in specified direction. More...
static uint8_t	wind_blow_object (mapstruct *const m, const int x, const int y, const MoveType move_type, int32_t wt, const living *stats)
	Calculate the direction to push an object from wind. More...
static int	worldmap_to_weathermap (const int x, const int y, int *const wx, int *const wy, mapstruct *const m)
	Convert coordinates from world map to weather tiles. More...
static int	write_elevmap (const Settings *settings)
	Save the average elevation information to localdir. More...
static int	write_forestrymap (const Settings *settings)
	Write the forestry map to the localdir. More...
int	write_gulfstreammap (const Settings *settings)
	Save the gulf stream to localdir. More...
int	write_humidmap (const Settings *settings)
	Save humidity information to localdir. More...
int	write_pressuremap (const Settings *settings)
	Save pressure information to localdir. More...
int	write_rainfallmap (const Settings *settings)
	Save rainfall information to localdir. More...
int	write_skymap (void)
	Write the sky map. More...
int	write_temperaturemap (const Settings *settings)
	Save temperature information to localdir. More...
static int	write_watermap (const Settings *settings)
	Save water percent information to localdir. More...
int	write_weather_images ()
	Dump all the weather data as an image. More...
int	write_winddirmap (const Settings *settings)
	Save wind direction to localdir. More...
int	write_windspeedmap (const Settings *settings)
	Save the wind speed to localdir. More...

Variables
static command_registration	command_handler = 0
static const uint32_t	directions []
	Colours used for wind directions. More...
DensityConfig *	forest_list = NULL
static event_registration	global_clock_handler = 0
static event_registration	global_map_handler = 0
static event_registration	global_mapload_handler = 0
static event_registration	global_object_handler = 0
weather_avoids_t *	growth_avoids = NULL
static int	gulf_stream_dir [GULF_STREAM_WIDTH][WEATHERMAPTILESY]
	Direction of the gulf stream. More...
static int	gulf_stream_direction
static int	gulf_stream_speed [GULF_STREAM_WIDTH][WEATHERMAPTILESY]
	Gulf stream variables. More...
static int	gulf_stream_start
static const int	season_tempchange [HOURS_PER_DAY]
	How to alter the temperature, based on the hour of the day. More...
static const uint32_t	skies []
	Colours used for weather types. More...
unsigned long	todtick
	Game world time, in in-game hours. More...
DensityConfig *	water_list = NULL
weather_avoids_t *	weather_avoids = NULL
weather_replace_t *	weather_evaporate = NULL
static const weather_grow_t	weather_grow []
	The table below is used to grow things on the map. More...
weather_replace_t *	weather_replace = NULL
weather_replace_t *	weather_snowmelt = NULL
static const weather_grow_t	weather_tile []
	The table below uses the same format as the one above. More...
weathermap_t **	weathermap
static int	wmperformstartx
	Current weather tile position. More...
static int	wmperformstarty
	Current weather tile position. More...
static weather_settings_t	wset