vision.c File Reference

#include "hack.h"

Include dependency graph for vision.c:

Defines
#define	sign(z)   ((z) < 0 ? -1 : ((z) ? 1 : 0 ))
#define	v_abs(z)   ((z) < 0 ? -(z) : (z))
#define	new_angle(lev, sv, row, col)   (*sv)
#define	set_cs(rowp, col)   (rowp[col] = COULD_SEE)
#define	good_row(z)   ((z) >= 0 && (z) < ROWNO)
#define	set_min(z)   if (*row_min > (z)) *row_min = (z)
#define	set_max(z)   if (*row_max < (z)) *row_max = (z)
#define	is_clear(row, col)   viz_clear_rows[row][col]
#define	q1_path(sy, sx, y, x, dummy)   result = _q1_path(sy,sx,y,x)
#define	q2_path(sy, sx, y, x, dummy)   result = _q2_path(sy,sx,y,x)
#define	q3_path(sy, sx, y, x, dummy)   result = _q3_path(sy,sx,y,x)
#define	q4_path(sy, sx, y, x, dummy)   result = _q4_path(sy,sx,y,x)
Functions
STATIC_DCL void	FDECL (fill_point,(int, int))
STATIC_DCL void	FDECL (dig_point,(int, int))
STATIC_DCL void	NDECL (view_init)
STATIC_DCL void	FDECL (view_from,(int, int, char **, char *, char *, int, void(*)(int, int, genericptr_t), genericptr_t))
STATIC_DCL void	FDECL (get_unused_cs,(char ***, char **, char **))
void	vision_init ()
int	does_block (int x, int y, struct rm *lev)
void	vision_reset ()
STATIC_OVL void	get_unused_cs (char ***rows, char **rmin, char **rmax)
void	vision_recalc (int control)
void	block_point (int x, int y)
void	unblock_point (int x, int y)
STATIC_OVL void	dig_point (int row, int col)
STATIC_OVL void	fill_point (int row, int col)
static void	FDECL ((*vis_func),(int, int, genericptr_t))
STATIC_DCL int	FDECL (_q1_path,(int, int, int, int))
STATIC_DCL int	FDECL (_q2_path,(int, int, int, int))
STATIC_DCL int	FDECL (_q3_path,(int, int, int, int))
STATIC_DCL int	FDECL (_q4_path,(int, int, int, int))
STATIC_OVL int	_q1_path (int srow, int scol, int y2, int x2)
STATIC_OVL int	_q4_path (int srow, int scol, int y2, int x2)
STATIC_OVL int	_q2_path (int srow, int scol, int y2, int x2)
STATIC_OVL int	_q3_path (int srow, int scol, int y2, int x2)
boolean	clear_path (int col1, int row1, int col2, int row2)
STATIC_DCL void	FDECL (right_side,(int, int, int, char *))
STATIC_DCL void	FDECL (left_side,(int, int, int, char *))
STATIC_OVL void	view_init ()
STATIC_OVL void	right_side (int row, int left, int right_mark, char *limits)
STATIC_OVL void	left_side (int row, int left_mark, int right, char *limits)
STATIC_OVL void	view_from (void FDECL((*func) int, void FDECL((*func) int, char **loc_cs_rows, char *left_most, char *right_most, void FDECL((*func) int, func, genericptr_t arg)
void	do_clear_area (void FDECL((*func) int, void FDECL((*func) int, void FDECL((*func) int, func, genericptr_t arg)
Variables
char	circle_data []
char	circle_start []
char *	viz_rmin
char *	viz_rmax
static char	could_see [2][ROWNO][COLNO]
static char *	cs_rows0 [ROWNO]
static char *	cs_rows1 [ROWNO]
static char	cs_rmin0 [ROWNO]
static char	cs_rmax0 [ROWNO]
static char	cs_rmin1 [ROWNO]
static char	cs_rmax1 [ROWNO]
static char	viz_clear [ROWNO][COLNO]
static char *	viz_clear_rows [ROWNO]
static char	left_ptrs [ROWNO][COLNO]
static char	right_ptrs [ROWNO][COLNO]
static int	start_row
static int	start_col
static int	step
static char **	cs_rows
static char *	cs_left
static char *	cs_right
static genericptr_t	varg

---

Define Documentation

#define good_row

(

z )

((z) >= 0 && (z) < ROWNO)

Referenced by left_side(), and right_side().

#define is_clear	(		row,
			col
	)		viz_clear_rows[row][col]

Referenced by _q1_path(), _q2_path(), _q3_path(), _q4_path(), left_side(), right_side(), and view_from().

#define new_angle	(		lev,
			sv,
			row,
			col
	)		(*sv)

Referenced by vision_recalc().

#define q1_path	(		sy,
			sx,
			y,
			x,
			dummy
	)		result = _q1_path(sy,sx,y,x)

Referenced by clear_path(), and right_side().

#define q2_path	(		sy,
			sx,
			y,
			x,
			dummy
	)		result = _q2_path(sy,sx,y,x)

Referenced by clear_path(), and left_side().

#define q3_path	(		sy,
			sx,
			y,
			x,
			dummy
	)		result = _q3_path(sy,sx,y,x)

Referenced by clear_path(), and left_side().

#define q4_path	(		sy,
			sx,
			y,
			x,
			dummy
	)		result = _q4_path(sy,sx,y,x)

Referenced by clear_path(), and right_side().

#define set_cs	(		rowp,
			col
	)		(rowp[col] = COULD_SEE)

Referenced by left_side(), right_side(), and view_from().

#define set_max

(

z )

if (*row_max < (z)) *row_max = (z)

Referenced by left_side(), and right_side().

#define set_min

(

z )

if (*row_min > (z)) *row_min = (z)

Referenced by left_side(), and right_side().

#define sign

(

z )

((z) < 0 ? -1 : ((z) ? 1 : 0 ))

Referenced by vision_recalc().

#define v_abs

(

z )

((z) < 0 ? -(z) : (z))

Referenced by do_clear_area(), and vision_recalc().

---

Function Documentation

STATIC_OVL int _q1_path	(	int	srow,
		int	scol,
		int	y2,
		int	x2
	)

References is_clear.

STATIC_OVL int _q2_path	(	int	srow,
		int	scol,
		int	y2,
		int	x2
	)

References is_clear.

STATIC_OVL int _q3_path	(	int	srow,
		int	scol,
		int	y2,
		int	x2
	)

References is_clear.

STATIC_OVL int _q4_path	(	int	srow,
		int	scol,
		int	y2,
		int	x2
	)

References is_clear.

void block_point	(	int	x,
		int	y
	)

References fill_point(), vision_full_recalc, and viz_array.

Referenced by clear_fcorr(), close_drawbridge(), create_monster(), doclose(), doorlock(), movebubbles(), place_object(), readobjnam(), repair_damage(), set_mimic_blocking(), set_mimic_sym(), still_chewing(), and wallify_vault().

Here is the call graph for this function:

Here is the caller graph for this function:

boolean clear_path	(	int	col1,
		int	row1,
		int	col2,
		int	row2
	)

References q1_path, q2_path, q3_path, and q4_path.

Referenced by do_light_sources(), and linedup().

Here is the caller graph for this function:

STATIC_OVL void dig_point	(	int	row,
		int	col
	)

References COLNO, left_ptrs, right_ptrs, and viz_clear.

Referenced by unblock_point().

Here is the caller graph for this function:

void do_clear_area	(	void FDECL((*func)	int,
		void FDECL((*func)	int,
		void FDECL((*func)	int,
		func	,
		genericptr_t	arg
	)

References circle_ptr, COLNO, couldsee, MAX_RADIUS, ROWNO, u, you::ux, you::uy, v_abs, view_from(), vision_full_recalc, and vision_recalc().

Referenced by dog_goal(), dogushforth(), findit(), litroom(), openit(), and seffects().

Here is the call graph for this function:

Here is the caller graph for this function:

int does_block	(	int	x,
		int	y,
		struct rm *	lev
	)

References BOULDER, CLOUD, D_CLOSED, D_LOCKED, D_TRAPPED, monst::data, IS_DOOR, IS_ROCK, level, M_AP_FURNITURE, M_AP_OBJECT, monst::m_ap_type, m_at, monst::mappearance, MOAT, mon, mons, dlevel_t::objects, obj::otyp, PM_GIANT_TURTLE, S_hcdoor, S_vcdoor, See_invisible, TREE, Underwater, and WATER.

Referenced by create_monster(), destroy_drawbridge(), dig(), fracture_rock(), seemimic(), and vision_reset().

Here is the caller graph for this function:

STATIC_DCL void FDECL	(	view_from	,
		(int, int, char **, char *, char *, int, void(*)(int, int, genericptr_t), genericptr_t)
	)

STATIC_DCL int FDECL	(	_q1_path	,
		(int, int, int, int)
	)

STATIC_DCL int FDECL	(	_q2_path	,
		(int, int, int, int)
	)

STATIC_DCL int FDECL	(	_q3_path	,
		(int, int, int, int)
	)

STATIC_DCL int FDECL	(	_q4_path	,
		(int, int, int, int)
	)

STATIC_DCL void FDECL	(	dig_point	,
		(int, int)
	)

STATIC_DCL void FDECL	(	get_unused_cs	,
		(char ***, char **, char **)
	)

STATIC_DCL void FDECL	(	fill_point	,
		(int, int)
	)

STATIC_DCL void FDECL	(	right_side	,
		(int, int, int, char *)
	)

STATIC_DCL void FDECL	(	left_side	,
		(int, int, int, char *)
	)

static void FDECL	(	*	vis_func,
		(int, int, genericptr_t)
	)		[static]

STATIC_OVL void fill_point	(	int	row,
		int	col
	)

References COLNO, left_ptrs, right_ptrs, and viz_clear.

Referenced by block_point().

Here is the caller graph for this function:

STATIC_OVL void get_unused_cs	(	char ***	rows,
		char **	rmin,
		char **	rmax
	)

References COLNO, cs_rmax0, cs_rmax1, cs_rmin0, cs_rmin1, cs_rows0, cs_rows1, ROWNO, and viz_array.

Referenced by vision_recalc().

Here is the caller graph for this function:

STATIC_OVL void left_side	(	int	row,
		int	left_mark,
		int	right,
		char *	limits
	)

References good_row, is_clear, left_ptrs, q2_path, q3_path, set_cs, set_max, set_min, step, and varg.

Referenced by view_from().

Here is the caller graph for this function:

STATIC_DCL void NDECL

(

view_init

)

STATIC_OVL void right_side	(	int	row,
		int	left,
		int	right_mark,
		char *	limits
	)

References COLNO, good_row, is_clear, q1_path, q4_path, right_ptrs, set_cs, set_max, set_min, step, and varg.

Referenced by view_from().

Here is the caller graph for this function:

void unblock_point	(	int	x,
		int	y
	)

References dig_point(), vision_full_recalc, and viz_array.

Referenced by destroy_drawbridge(), dig(), do_earthquake(), dokick(), doorlock(), dosearch0(), findone(), fracture_rock(), gd_move(), invault(), launch_obj(), m_move(), mdig_tunnel(), mkcavepos(), mkinvpos(), mon_set_minvis(), moverock(), mpickstuff(), mv_bubble(), open_drawbridge(), openone(), picklock(), poly_obj(), remove_monster(), remove_object(), seemimic(), set_mimic_blocking(), show_map_spot(), still_chewing(), untrap(), use_defensive(), use_stethoscope(), zap_dig(), and zap_over_floor().

Here is the call graph for this function:

Here is the caller graph for this function:

STATIC_OVL void view_from	(	void FDECL((*func)	int,
		void FDECL((*func)	int,
		char **	loc_cs_rows,
		char *	left_most,
		char *	right_most,
		void FDECL((*func)	int,
		func	,
		genericptr_t	arg
	)

References circle_ptr, COLNO, is_clear, left_ptrs, left_side(), MAX_RADIUS, right_ptrs, right_side(), ROWNO, and set_cs.

Referenced by do_clear_area(), and vision_recalc().

Here is the call graph for this function:

Here is the caller graph for this function:

STATIC_OVL void view_init

(

)

Referenced by vision_init().

Here is the caller graph for this function:

void vision_init

(

)

References could_see, cs_rmax0, cs_rmin0, cs_rows0, cs_rows1, ROWNO, view_init(), vision_full_recalc, viz_array, viz_clear, viz_clear_rows, viz_rmax, and viz_rmin.

Here is the call graph for this function:

void vision_recalc

(

int

control )

References Blind, circle_ptr, COLNO, COULD_SEE, do_light_sources(), FDECL, get_unused_cs(), iflags, in_mklev, IN_SIGHT, IS_DOOR, is_pool(), Is_rogue_level, IS_WALL, Is_waterlevel, isok(), levl, max, min, new_angle, newsym(), you::nv_range, sinfo::panicking, program_state, recalc_mapseen(), ROWNO, SDOOR, rm::seenv, seenv_matrix, sign, SVALL, TEMP_LIT, TT_PIT, rm::typ, u, Underwater, you::utrap, you::utraptype, you::ux, you::uy, you::uz, v_abs, view_from(), vision_full_recalc, instance_flags::vision_inited, viz_array, viz_clear, viz_rmax, viz_rmin, and you::xray_range.

Referenced by do_clear_area(), docrt(), domove(), doorlock(), dosave0(), drown(), goto_level(), gulpmu(), hurtle_step(), litroom(), mcalcdistress(), melt_ice(), move_into_trap(), movebubbles(), moveloop(), movemon(), parseoptions(), and teleds().

Here is the call graph for this function:

Here is the caller graph for this function:

void vision_reset

(

)

References COLNO, could_see, cs_rmax0, cs_rmin0, cs_rows0, does_block(), iflags, IS_ROCK, left_ptrs, levl, right_ptrs, ROWNO, TRUE, vision_full_recalc, instance_flags::vision_inited, viz_array, viz_clear, viz_rmax, and viz_rmin.

Referenced by dorecover(), goto_level(), and newgame().

Here is the call graph for this function:

Here is the caller graph for this function:

---

Variable Documentation

char circle_data[]

Initial value:

 {
         1, 1,
         2, 2, 1,
         3, 3, 2, 1,
         4, 4, 4, 3, 2,
         5, 5, 5, 4, 3, 2,
         6, 6, 6, 5, 5, 4, 2,
         7, 7, 7, 6, 6, 5, 4, 2,
         8, 8, 8, 7, 7, 6, 6, 4, 2,
         9, 9, 9, 9, 8, 8, 7, 6, 5, 3,
        10,10,10,10, 9, 9, 8, 7, 6, 5, 3,
        11,11,11,11,10,10, 9, 9, 8, 7, 5, 3,
        12,12,12,12,11,11,10,10, 9, 8, 7, 5, 3,
        13,13,13,13,12,12,12,11,10,10, 9, 7, 6, 3,
        14,14,14,14,13,13,13,12,12,11,10, 9, 8, 6, 3,
        15,15,15,15,14,14,14,13,13,12,11,10, 9, 8, 6, 3,
 16 
}

char circle_start[]

Initial value:

 {
          0,    
    0,
          2,
          5,
          9,
         14,
         20,
         27,
         35,
         44,
         54,
         65,
         77,
         90,
        104,
        119,
}

char could_see[2][ROWNO][COLNO] [static]

Referenced by vision_init(), and vision_reset().

char* cs_left [static]

char* cs_right [static]

char cs_rmax0[ROWNO]

Referenced by get_unused_cs(), vision_init(), and vision_reset().

char cs_rmax1[ROWNO]

Referenced by get_unused_cs().

char cs_rmin0[ROWNO] [static]

Referenced by get_unused_cs(), vision_init(), and vision_reset().

char cs_rmin1[ROWNO] [static]

Referenced by get_unused_cs().

char** cs_rows [static]

char* cs_rows0[ROWNO] [static]

Referenced by get_unused_cs(), vision_init(), and vision_reset().

char * cs_rows1[ROWNO]

Referenced by get_unused_cs(), and vision_init().

char left_ptrs[ROWNO][COLNO] [static]

Referenced by dig_point(), fill_point(), left_side(), view_from(), and vision_reset().

char right_ptrs[ROWNO][COLNO] [static]

Referenced by dig_point(), fill_point(), right_side(), view_from(), and vision_reset().

int start_col [static]

int start_row [static]

int step [static]

Referenced by in_rooms(), left_side(), and right_side().

genericptr_t varg [static]

Referenced by left_side(), and right_side().

char viz_clear[ROWNO][COLNO] [static]

Referenced by dig_point(), fill_point(), vision_init(), vision_recalc(), and vision_reset().

char* viz_clear_rows[ROWNO] [static]

Referenced by vision_init().

char * viz_rmax

Referenced by vision_init(), vision_recalc(), and vision_reset().

char* viz_rmin

Referenced by vision_init(), vision_recalc(), and vision_reset().