startpos.c File Reference

#include <math.h>
#include "log.h"
#include "fcintl.h"
#include "game.h"
#include "map.h"
#include "movement.h"
#include "maphand.h"
#include "mapgen_topology.h"
#include "mapgen_utils.h"
#include "startpos.h"
#include "temperature_map.h"

Go to the source code of this file.

Data Structures
struct	islands_data_type
struct	start_filter_data

Functions
static int	get_tile_value (struct tile *ptile)
static bool	check_native_area (const struct unit_type *utype, const struct tile *ptile, int min_area)
static bool	is_valid_start_pos (const struct tile *ptile, const void *dataptr)
static int	compare_islands (const void *A_, const void *B_)
static void	initialize_isle_data (void)
static bool	filter_starters (const struct tile *ptile, const void *data)
bool	create_start_positions (enum map_startpos mode, struct unit_type *initial_unit)

Variables
static struct islands_data_type *	islands
static int *	islands_index

Function Documentation

check_native_area()

static bool check_native_area ( const struct unit_type *  utype, const struct tile *  ptile, int  min_area  )

static

Check if number of reachable native tiles is sufficient. Initially given tile is assumed to be native (not checked by this function)

Definition at line 130 of file startpos.c.

Referenced by is_valid_start_pos().

compare_islands()

static int compare_islands ( const void *  A_, const void *  B_  )

static

Helper function for qsort

Definition at line 252 of file startpos.c.

Referenced by create_start_positions().

create_start_positions()

bool create_start_positions	(	enum map_startpos	mode,
		struct unit_type *	initial_unit
	)

where do the different nations start on the map? well this function tries to spread them out on the different islands.

MAPSTARTPOS_SINGLE: one player per isle. MAPSTARTPOS_2or3: 2 players per isle (maybe one isle with 3). MAPSTARTPOS_ALL: all players in asingle isle. MAPSTARTPOS_VARIABLE: at least 2 player per isle.

Assumes assign_continent_numbers() has already been done! Returns true on success

Definition at line 300 of file startpos.c.

Referenced by map_fractal_generate().

filter_starters()

static bool filter_starters ( const struct tile *  ptile, const void *  data  )

static

A function that filters for TER_STARTER tiles.

Definition at line 283 of file startpos.c.

Referenced by create_start_positions().

get_tile_value()

static int get_tile_value ( struct tile *  ptile )

static

Return an approximation of the goodness of a tile to a civilization.

Definition at line 51 of file startpos.c.

Referenced by create_start_positions().

initialize_isle_data()

static void initialize_isle_data ( void  )

static

Initialize islands data.

Definition at line 262 of file startpos.c.

Referenced by create_start_positions().

is_valid_start_pos()

static bool is_valid_start_pos ( const struct tile *  ptile, const void *  dataptr  )

static

Return TRUE if tile is a good starting position.

Bad places:

• Islands with no room.
• Non-suitable terrain;
• On a hut;
• Too close to another starter on the same continent: 'dist' is too close (real_map_distance)

Definition at line 187 of file startpos.c.

Referenced by create_start_positions().

Variable Documentation

islands

struct islands_data_type* islands

static

Definition at line 45 of file startpos.c.

Referenced by create_start_positions(), initialize_isle_data(), and is_valid_start_pos().

islands_index

int* islands_index

static

Definition at line 46 of file startpos.c.

Referenced by create_start_positions(), initialize_isle_data(), and is_valid_start_pos().