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/* Definitions for graphics support not specific to any interface.
Copyright (C) 1993-1995, 1997 Stanley T. Shebs.
Xconq is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2, or (at your option)
any later version. See the file COPYING. */
#define NUMPOWERS 8
typedef struct a_vp {
int sx, sy; /* lower left corner of the viewport, in pixels */
int totsw, totsh; /* total size of the map in pixels */
int sxmin, symin; /* lower bound on the viewport position */
int sxmax, symax; /* upper bound on the viewport position */
short pxw, pxh; /* size of window in pixels */
short power; /* index to this map's magnification */
short mag; /* magnification of each cell (a power of 2) */
short vcx, vcy; /* center of the view, in cells */
short hw, hh; /* pixel dims of a cell */
short hch; /* vertical center-to-center distance */
short uw, uh; /* pixel dims of unit subcell */
short angle; /* Angle of perspective view */
short cellwidth;
short vertscale;
short wide_viewport;
short draw_terrain; /* Display solid color terrain on the map? */
short aux_terrain_types[MAXTTYPES];
short draw_aux_terrain[MAXTTYPES];
short draw_grid; /* Draw outlines around cells? */
short draw_cell_pats; /* Draw terrain patterns? */
short draw_other_maps; /* Draw outlines of other maps? */
short draw_units; /* Draw units on the map? */
short draw_names; /* Draw unit names/numbers on the map? */
short oldest_to_show; /* the relative time of the oldest data */
short age_to_fade; /* point at which to gray out the display */
short newest_to_show; /* the relative time of the newest data */
short fade_terrain; /* fade world features as well as units? */
short lowest_altitude; /* the lowest altitude of units to display */
short highest_altitude; /* the highest altitude of units to display */
short draw_people; /* Draw people sides on the map? */
short draw_control; /* Draw controlling sides on the map? */
short draw_elevations; /* Draw elevations on the map? */
short draw_materials[MAXMTYPES];
short num_materials_to_draw;
short draw_lighting; /* Draw day/night on the map? */
short draw_temperature; /* Draw temperatures on the map? */
short draw_winds; /* Draw wind vectors on the map? */
short draw_clouds; /* Draw clouds on the map? */
short draw_storms;
short draw_plans;
short draw_cover;
short draw_feature_boundaries;
short draw_latlong; /* Draw latitude/longitude in view */
short latlong_interval; /* Spacing of meridians in arc minutes */
short draw_ai; /* Draw AI info in view */
} VP;
typedef struct a_legend {
int ox, oy; /* starting point */
int dx, dy; /* displacement */
float angle, dist; /* polar displacement (redundant, but useful) */
} Legend;
typedef struct a_line_segment {
int sx1, sy1, sx2, sy2;
} LineSegment;
#define hexagon_adjust(v) (area.xwrap ? 0 : (area.halfheight * (v)->hw) / 2)
#define REDRAW_CHAR '\001'
#define BACKSPACE_CHAR '\010'
#define ESCAPE_CHAR '\033'
#define DELETE_CHAR 0x7f
extern short mags[], hws[], hhs[], hcs[], uws[], uhs[];
extern short bwid[], bwid2[], cwid[];
extern short bsx[NUMPOWERS][7], bsy[NUMPOWERS][7];
extern short lsx[NUMPOWERS][6], lsy[NUMPOWERS][6];
extern short qx[NUMPOWERS][7], qy[NUMPOWERS][7];
extern char *dirchars;
extern ImageFamily *unseen_image;
extern char *terrchars;
extern char *unitchars;
extern char unseen_char_1, unseen_char_2;
extern Module **possible_games;
extern int numgames;
/* Function declarations. */
extern void collect_possible_games PARAMS ((void));
extern void add_to_possible_games PARAMS ((Module *module));
extern void parse_long_name_command PARAMS ((char *cmdstr, int *prefixp, char **namep,
char **argp, char *buf));
extern VP *new_vp PARAMS ((void));
extern void xform_cell PARAMS ((VP *vp, int x, int y, int *sxp, int *syp));
extern void xform_cell_fractional PARAMS ((VP *vp, int x, int y, int xf, int yf,
int *sxp, int *syp));
extern void xform_unit PARAMS ((VP *vp, Unit *unit,
int *sxp, int *syp, int *swp, int *shp));
extern void xform_unit_self PARAMS ((VP *vp, Unit *unit,
int *sxp, int *syp, int *swp, int *shp));
extern void xform_occupant PARAMS ((VP *vp, Unit *transport, Unit *unit,
int sx, int sy, int sw, int sh,
int *sxp, int *syp, int *swp, int *shp));
extern void scale_vp PARAMS ((VP *vp, VP *vp2,
int *sxp, int *syp, int *swp, int *shp));
extern int nearest_cell PARAMS ((VP *vp, int sx, int sy,
int *xp, int *yp, int *xfp, int *yfp));
extern int nearest_boundary PARAMS ((VP *vp, int sx, int sy,
int *xp, int *yp, int *dirp));
extern int nearest_unit PARAMS ((VP *vp, int sx, int sy, Unit **unitp));
extern int cell_is_visible PARAMS ((VP *vp, int x, int y));
extern int cell_is_in_middle PARAMS ((VP *vp, int x, int y));
extern int set_view_size PARAMS ((VP *vp, int w, int h));
extern int set_view_position PARAMS ((VP *vp, int sx, int sy));
extern int set_view_power PARAMS ((VP *vp, int power));
extern int set_view_angle PARAMS ((VP *vp, int angle));
extern int set_view_direction PARAMS ((VP *vp, int dir));
extern int set_view_focus PARAMS ((VP *vp, int x, int y));
extern void center_on_focus PARAMS ((VP *vp));
extern void focus_on_center PARAMS ((VP *vp));
extern void free_vp PARAMS ((VP *vp));
extern void compute_fire_line_segment PARAMS ((int sx1, int sy1, int sx2, int sy2,
int i, int n,
int *xx, int *yy, int *dx, int *dy));
extern void place_feature_legends PARAMS ((Legend *leg, int nf, Side *side,
int orient, int block));
extern void plot_meridians
PARAMS ((VP *vp,
void (*line_callback)(int x1, int y1, int x1f, int y1f,
int x2, int y2, int x2f, int y2f),
void (*text_callback)(int x1, int y1, int x1f, int y1f,
char *str)));
extern void init_contour_lines PARAMS ((void));
extern void contour_lines_at PARAMS ((VP *vp, int x, int y, int sx, int sy,
LineSegment **lines, int *numlinesp));
extern int draw_temperature_here PARAMS ((Side *side, int x, int y));
extern int draw_winds_here PARAMS ((Side *side, int x, int y));
extern void oneliner PARAMS ((Side *side, VP *vp, int sx, int sy));
extern Unit *find_unit_or_occ PARAMS ((VP *vp, Unit *unit,
int usx, int usy, int usw, int ush,
int sx, int sy));
extern Unit *find_unit_at PARAMS ((VP *vp, int x, int y, int sx, int sy));
extern void pick_a_focus PARAMS ((Side *side, int *xp, int *yp));
extern Unit *autonext_unit PARAMS ((Side *side, Unit *unit));
extern int in_box PARAMS ((int x, int y, int lx, int ly, int w, int h));
extern Unit *autonext_unit_inbox PARAMS ((Side *side, Unit *unit, VP *vp));
extern int could_be_next_unit PARAMS ((Unit *unit));
extern Unit *find_next_occupant PARAMS ((Unit *unit));
extern int num_active_displays PARAMS ((void));
extern int char_to_dir PARAMS ((int ch, int *dir1p, int *dir2p, int *modp));
extern int advance_into_cell PARAMS ((Side *side, Unit *unit, int x, int y,
Unit *other));
extern int give_supplies PARAMS ((Unit *unit, short *amts, short *rslts));
extern int take_supplies PARAMS ((Unit *unit, short *amts, short *rslts));
extern int favored_type PARAMS ((Unit *unit));
extern void force_global_replan PARAMS ((Side *side));
extern ImageFamily *get_unit_type_images
PARAMS ((Side *side, int u, char *stylepref));
extern ImageFamily *get_terrain_type_images PARAMS ((Side *side, int t));
extern ImageFamily *get_unseen_images PARAMS ((Side *side));
extern ImageFamily *get_emblem_images PARAMS ((Side *side, Side *side2));
extern void record_imf_get PARAMS ((ImageFamily *imf));
extern void init_ui_chars PARAMS ((void));
extern void dump_text_view PARAMS ((Side *side, int use_both));
extern int terrain_seen_at PARAMS ((Side *side, int x, int y));
extern Unit *unit_seen_at PARAMS ((Side *side, int x, int y));
extern int utype_seen_at PARAMS ((Side *side, int x, int y));
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