/*******************************************************************************
 *   BlitDemons  by Walt Strickler
 *   This program and all its source code are in the public domain and are
 * freely distributable and usable for any purpose, private or commercial.
 ******************************************************************************/


#include <stdio.h>
#include <assert.h>
#include <intuition/intuition.h>
#include <intuition/screens.h>
#include <libraries/dos.h>
/* #include <exec/types.h> */           /* INCLUDED by intuition.h */
/* #include <exec/nodes.h> */           /* INCLUDED by intuition.h */
/* #include <graphics/gfx.h> */         /* INCLUDED by intuition.h */  
/* #include <graphics/rastport.h> */    /* INCLUDED by intuition.h */
#include <proto/intuition.h>
#include <proto/exec.h>
#include <proto/graphics.h>
#include <proto/dos.h>

#define NUM_PLANES 4
#define NUM_COLORS 16

struct BDMainStruct
    {
    WORD *Display[NUM_PLANES],  /* Pointers to first usable line of display */
         *Incr[NUM_PLANES],  /* Pointers to incremented bitplanes */
          *Equal,    /* Pointer to 'Equal' bitplane */
          *Temp;   /* Pointer to 'Temp' bitplane */
    struct DoBlitNode *BDBlitNodes;
    int    XSize,  /* Width of area to be blitted in pixels */
           YSize,  /* Height of area to be blitted lines z*/
           Mod,  /* Difference between size of screen and that of window */
           LRBorder;  /* Max(BorderLeft, BorderRight) */
           /*   Note: Top and bottom borders are taken into account in
            * Display and YSize. 
            */
    };


/*    This is the pseudo-bltnode passed to DoBlit().  Note that it does not 
 *  contain a struct bltnode.  It contains only the information necessary
 *  for one blit.
 */
struct DoBlitNode
    {
    WORD con0,
         con1,    
         afwm,    
         alwm,
         *csource, *bsource, *asource, *dsource,
         bltsize,
         cmod, bmod, amod, dmod;
    };


/* Function return #defines */
/* InitIntui() */
#define INTUI_OK  0
#define NO_INTUI  1
#define NO_GFX    2
#define NO_SCREEN 3
#define NO_WIN    4

/* InitPlanes()   Non-OK return mut. excl with InitIntui() */
#define PLANES_OK    0
#define PLANES_CHOKE 5   

/* MainLoop()     Non-OK return mut. excl with InitIntui() and InitPlanes() */
#define ML_OK          0
#define ABOUT_CHOKE    6

/* main() */
#define INIT_BLIT_CHOKE 7
#define WBI_CHOKE       8
	
/* Randomize */
#define RAND_OK          0
#define RAND_QUIT        1
#define RAND_ABOUT_CHOKE 2

/* DisplayAbout() */
#define DA_OK    0
#define DA_CHOKE 1

/* CheckMsg() */
#define NO_MSG    0
#define NEW       1
#define QUIT      2
#define CLOSE_WIN 3
#define STOP      4
#define START     5
#define ABOUT     6

/* DoMenus() */
#define NO_MENU  0
/* See CheckMsg() for other DoMenus() defines */

/* Defines for function arguments */
/* CheckMsg() */
#define WAIT    0
#define NO_WAIT 1

/* BlitCompare */
#define UP_NEIGHBOR    0
#define LEFT_NEIGHBOR  1
#define RIGHT_NEIGHBOR 2
#define DOWN_NEIGHBOR  3
#define TO_EQUAL       0
#define TO_TEMP        1


/*******************************************************************************
 *  Some useful external items
 ******************************************************************************/
extern struct Window *BDWindow;
extern struct Screen *BDScreen;


/*******************************************************************************
 *  Prototypes for my functions
 ******************************************************************************/
/* BDemon.c */
int MainLoop(struct BDMainStruct *);
int DisplayAbout();
struct window *DisplayOne(struct NewWindow *, struct IntuiText *);
int Randomize(struct BDMainStruct *, struct Window *);
int InitPlanes(struct BDMainStruct *, struct Window *);
void KillPlanes(struct BDMainStruct *);
void ErrorMsgs(int);

/* BDIntui.c */
int InitIntui();
void SetPalette();
int CheckMsg(int);
int DoMenus(struct IntuiMessage *);
void ClearScreen();
void OnStart();
void OffStart();
void OnStop();
void OffStop();
void SetBDMenu();
void ClearBDMenu();

/* BDBlit.c */
void OneGen(struct BDMainStruct *);
struct DoBlitNode *InitBlits(struct BDMainStruct *);