#include "constants.h"

typedef struct {
	int x;
	int y;
} xy_t;

struct {
	int x;
	int y;
	int width;
	int height;
	int pos;
	int gridsize;
	int gridrowlen;
	SDL_Color gridcol;
	SDL_Color gridbgcol;
	SDL_Color bgcol;
} obox;

struct {
	int x;
	int y;
	int width;
	int height;
	int gridsize;
	int gridrowlen;
	SDL_Color gridcol;
	SDL_Color bgcol;
} toolbox;

struct {
	int x;
	int y;
	int width;
	int height;
} mapbox;


typedef struct {
	char text[BUFLEN];
	int x;
	int y;
	int w;
	int h;
	SDL_Color c;
	int anchor;
} text_t;


typedef struct {
	int srcobj;
	int srcxoff;
	int srcyoff;
	int dstobj;
	int dstxoff;
	int dstyoff;
	int npoints;
	xy_t point[MAXPOINTS];
	SDL_Color col;
	int style;
} link_t;


typedef struct {
	int type; /* line, square */
	int x1,y1;
	int x2,y2;
	SDL_Color c;
} vector_t;

typedef struct {
	int w;
	int h;
	vector_t vector[MAXVECTORSPERIMAGE];
	int vnum;
} vectorimg_t;

typedef struct {
	char name[BUFLEN];
	int canscale;
	int defw;
	int defh;
	vectorimg_t vimg;
} object_t;


struct {
	vectorimg_t vect;
	char name;
} letter[MAXLETTERVECTS];

typedef struct {
	int id;
	int type;
} thing_t;

object_t objtype[MAXOBJTYPES];

typedef struct {
	int type; /* index into objtype[] */
	int x;
	int y;
	int w;
	int h;
	int child;
} mapobject_t;

typedef struct {
	char name[BUFLEN];
	SDL_Surface *img;
} button_t;
button_t button[MAXBUTTONS];

typedef struct {
	int width;
	int height;
	int bpp;
	SDL_Color bgcol;
	SDL_Color boxcol;
	int numthings; 
	int numobjects;
	int numlinks;
	int numtext;

	int selecteditem;
	int selecteditemtype;
	int selectedlinkpoint;
	int selectedtype;

	int curobj; /* object being moved/dragged/etc */
	int curlink; /* link being moved/dragged/etc */
	int curlinkpoint; /* link point being moved/dragged/etc */
	int curtext; /* text being moved/dragged/etc */
	int startx,starty;
	int textanchor;
	char text[BUFLEN];

	char name[BUFLEN];

	/* actual data */
	text_t textob[MAXTEXT];
	mapobject_t obj[MAXOBJECTS];
	thing_t thing[MAXOBJECTS + MAXLINKS];
	link_t olink[MAXLINKS];

} map_t;

map_t map[MAXMAPS];


void addlinkpoint(int linkid, int x, int y);
void addvector(vectorimg_t *vimg, int type, int x1, int y1, int x2, int y2, SDL_Color *c);
void changestate(int newstate);
void cleanup(void);
int createobject(int type, int x, int y);
void copyline(SDL_Surface *screen,int x1, int y1, int x2, int y2, int *lbuf);
void deletething(int id, int type);
void deletelink(int linkid);
void deleteobject(int oid );
void deletetext(int textid);
void drawbox(SDL_Surface *screen, int x1, int y1, int x2, int y2, SDL_Color c);
void drawcolorchart(SDL_Surface *dest);
void drawmaplist(SDL_Surface *dest);
int drawletter(SDL_Surface *dest,int x, int y, int w, int h, char let, SDL_Color col);
void drawline(SDL_Surface *screen, int x1, int y1, int x2, int y2, SDL_Color c);
void drawlinebehind(SDL_Surface *screen, int x1, int y1, int x2, int y2, SDL_Color c);
void drawlink(SDL_Surface *dest, link_t *l);
void drawpixel(SDL_Surface *screen, int x, int y, SDL_Color c);
void drawmap(void);
void drawmapbox(void);
void drawobox(void);
void drawscreen(void);
void drawstatusbar(void);
void drawtext(SDL_Surface *dest, text_t *t);
void drawtoolbox(void);
void drawtoolboxselector(int buttonid);
void drawvector(SDL_Surface *dest, vectorimg_t *vimg, int x, int y, int w, int h,SDL_Color *overridefg );
void drillto(int mapnum);
int endobjmove(int x, int y);
int endresize(int x, int y);
int endtextresize(int x, int y);
int endlink(int x, int y);
int endlinkmove(int x, int y);
int endlinkdstmove(int x, int y);
int endlinkpointmove(int x, int y);
int endlinksrcmove(int x, int y);
int endtext(void);
int endtextmove(int x, int y);
int findpointpos(link_t *l, int px, int py);
void floodfill(SDL_Surface *dest, int x, int y, SDL_Color fillcol);
void floodfill2(SDL_Surface *dest, int x, int y, SDL_Color fillcol, SDL_Color bgcol);
void floodfill3(SDL_Surface *dest, int x1, int x2, int y, SDL_Color fillcol, SDL_Color bgcol);
void floodfill4(SDL_Surface *dest, int x, int y, SDL_Color fillcol, SDL_Color bgcol);
int getcolor(SDL_Surface *dest, int x, int y, SDL_Color *col);
void drawyn(char *prompt);
int getyn(int x, int y);
void goback(void);
int linelen(int x1,int y1,int x2,int y2);
int linkat(int x, int y);
int loadmap(void);
void lowerselected(void);
int objat(int x, int y);
void pasteline(SDL_Surface *screen, int *lbuf);
void pop(int *x, int *y);
void push(int x, int y);
int initgraphics(void);
void initmap(int mapnum);
int initobject(int onum);
int isonline (int fx, int fy, int x1, int y1, int x2, int y2);
int isonlink(int linkid, int mx, int my);
int isonlinkdst(int lineid, int mx, int my);
int isonlinkpoint(int lineid, int mx, int my);
int isonlinksrc(int lineid, int mx, int my);
int isonmap (int x, int y);
int isonobox (int x, int y);
int isontoolbox (int x, int y);
int isonmapbox (int x, int y);
int isonmapboxchildren (int x, int y);
int isonmapname (int x, int y);
int isongoback (int x, int y);
void initvars(void);
void raiseselected(void);
int savemap(void);
int showfiledialog(void);
int startlink (int x, int y);
int startlinkdstmove(int x, int y);
int startlinkpointmove(int x, int y);
int startlinksrcmove(int x, int y);
int startlinkmove(int x, int y);
int startobjmove(int x, int y);
int startresize (int x, int y);
int startresizetext (int x, int y);
int starttextmove(int x, int y);
int textat(int x, int y);
int thingat(int x, int y);
int updatefilename(void);
int updatelinkshadow(int x, int y);
int updatelinkpointshadow(int x, int y);
int updatemoveshadow(int x, int y);
int updateresizeshadow(int x, int y);
int updateresizetextshadow(int x, int y);
int updatetextcursor(void);
int updatetextshadow(int x, int y);