(ns com.aurellem.run.image

   (:use (com.aurellem.gb saves gb-driver util constants

                          items vbm characters money

                          rlm-assembly))

   (:use (com.aurellem.run util music title save-corruption

                           bootstrap-0 bootstrap-1))

   (:require clojure.string)

   (:import [com.aurellem.gb.gb_driver SaveState])

   (:import java.io.File))

 

 ;; want to display an image onto the screen.

 ;; probably will be the six ponies, possibly with scrolling. 

 

 ;; probably don't need hi-color mode since the images shuld be

 ;; simple. 

 

 ;; use background tiles?  they provide greater color depth than

 ;; sprites, and can still be scrolled, so why not? 

 

 

 ;; First of all, RGB colors in an image are not the same as those in a

 ;; GameBoy, so I need to convert them.  Fortunately, this code is

 ;; already written for me in this C-code from the public domain

 ;; hi-color converter by Glen Cook, Jeff Frohwein, and Rob Jones.

 

 ;; the code snipped itself is by Brett Bibby and is translated here

 ;; from C into clojure.

 

 

 ;; This section of code is used to convert an RGB (pc) triplet into

 ;; a RGB (gameboy) triplet. This section of code was kindly donated

 ;; by Brett Bibby (GameBrains).

 

 ;; BYTE intensity[32] = {

 ;;   0x00, 0x10, 0x20, 0x30, 0x40, 0x50, 0x5e, 0x6c, 0x7a, 0x88, 0x94,

 ;;   0xa0, 0xae, 0xb7, 0xbf, 0xc6, 0xce, 0xd3, 0xd9, 0xdf, 0xe3, 0xe7,

 ;;   0xeb, 0xef, 0xf3, 0xf6, 0xf9, 0xfb, 0xfd, 0xfe, 0xff, 0xff };

 

 ;; unsigned char influence[3][3] = 

 ;;   {

 ;;     {16,4,4},

 ;;     {8,16,8},

 ;;     {0,8,16}

 ;;   };

 

 ;; RGBQUAD translate(BYTE rgb[3])

 ;; {

 ;;   RGBQUAD color;

 ;;   BYTE	tmp[3];

 ;;   BYTE	m[3][3];

 ;;   BYTE	i,j;

 

 ;;   for (i=0;i<3;i++)

 ;;     for (j=0;j<3;j++)

 ;;       m[i][j] = (intensity[rgb[i]>>3]*influence[i][j]) >> 5;

 

 ;;   for (i=0;i<3;i++)

 ;;     {

 ;;       if (m[0][i]>m[1][i])

 ;; 	{

 ;; 	  j=m[0][i]; 

 ;; 	  m[0][i]=m[1][i]; 

 ;; 	  m[1][i]=j;

 ;; 	}

 

 ;;       if (m[1][i]>m[2][i])

 ;; 	{

 ;; 	  j=m[1][i]; 

 ;; 	  m[1][i]=m[2][i]; 

 ;; 	  m[2][i]=j;

 ;; 	}

 

 ;;       if (m[0][i]>m[1][i])

 ;; 	{

 ;; 	  j=m[0][i]; 

 ;; 	  m[0][i]=m[1][i]; 

 ;; 	  m[1][i]=j;

 ;; 	}

 

 ;;       tmp[i]=(((m[0][i]+m[1][i]*2+m[2][i]*4)*5) >> 4)+32;

 ;;     }

 

 ;;   color.rgbRed	= tmp[0];

 ;;   color.rgbGreen	= tmp[1];

 ;;   color.rgbBlue	= tmp[2];

 

 ;;   return color;

 ;; }

 

 

                   

 

 (def image-program-target 0xB000)

 

 

 (def display-width 160)

 (def display-height 144)

 

 

 

 ;{:r :g :b }

 

 (def character-data     0x8000)

 (def character-data-end 0x97FF)

 

 

 

 

 (def BG-data-1 0x9800)

 

 (def BG-data-2 0x9C00)

 

 (def OAM 0xFE00)

 

 

 

 (def video-bank-select-register 0xFF4F)

 

 (defn gb-rgb->bits [[r g b]]

   (assert (<= 0 r 31))

   (assert (<= 0 g 31))

   (assert (<= 0 b 31))

   [(bit-and

     0xFF

     (+

      r

      (bit-shift-left g 5)))

    (+

     (bit-shift-right g 3)

     (bit-shift-left  b 2))])

 

 

 (def bg-palette-select 0xFF68)

 (def bg-palette-data   0xFF69)

 

 (def obj-palette-select 0xFF6A)

 (def obj-palette-data   0xFF6B)

 

 (def max-palettes 8)

 

 (defn write-data [target data]

     (flatten

      [0x3E ;; load literal to A

       data

       0xEA ;; load A into target

       (disect-bytes-2 target)]))

 

 (defn begin-sequential-palette-write

   [palette-num palette-select-address]

   (assert (<= 0 palette-num max-palettes))

   (assert

    (or (= palette-select-address bg-palette-select)

        (= palette-select-address obj-palette-select)))

   (let [palette-write-data

         (Integer/parseInt

          (str "1" ;; auto increment

               "0" ;; not used

               (format

                "%03d"

                (Integer/parseInt

                 (Integer/toBinaryString palette-num) 10))

               "00" ;; color num

               "0"  ;; H/L

               ) 2)]

     (write-data palette-select-address palette-write-data)))

         

 (defn set-palettes [palette-select palette-data palettes]

   (assert (<= (count palettes)) max-palettes)

   (flatten 

    [(begin-sequential-palette-write 0 palette-select)

     (map (partial write-data palette-data)

          (flatten (map gb-rgb->bits palettes)))]))

 

 (defn display-one-color

   "Displayes a single color onto the gameboy screen. input rgb in

    gameboy rgb."

   [[r g b]]

   ;; construct a kernel that displays a single color

   (let [palettes (repeat 8 [r g b])

         kernel-address 0xC000

         kernel

         (flatten

          [0xF3 ;; disable interrupts

           (frame-metronome)

           (set-palettes

            obj-palette-select

            obj-palette-data

            palettes)

           (set-palettes

            bg-palette-select

            bg-palette-data

            palettes)

           (infinite-loop)])]

     (-> (set-memory-range (second (music-base))

                           kernel-address kernel)

         (PC! kernel-address))))

 

 

 

   

 (defn write-palette-color [palette-num r g b]

   (let [[byte-1 byte-2] (gb-rgb->bits r g b)]

 

 

     ))