54 lines
1.2 KiB
OCaml
54 lines
1.2 KiB
OCaml
type pixel = {
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r : char;
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g : char;
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b : char;
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a : char;
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}
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type t = {
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width : int;
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height : int;
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data : pixel array;
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}
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type control = {
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lcd_display_enable : bool;
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tile_map_select : int;
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window_display_enable : bool;
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tile_data_select : int;
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bg_tile_map_select : int;
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sprite_size : int;
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sprite_enable : bool;
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bg_display : bool;
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}
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let get_lcd_control mem =
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let b = Memory.get mem 0xFF40 |> int_of_char in
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let lcd_display_enable = Bit.is_set b 7 in
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let tile_map_select = if not (Bit.is_set b 6) then 0x9800 else 0x9c00 in
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let window_display_enable = Bit.is_set b 5 in
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let tile_data_select = if not (Bit.is_set b 4) then 0x8800 else 0x8000 in
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let bg_tile_map_select = if not (Bit.is_set b 3) then 0x9800 else 0x9c00 in
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let sprite_size = if not (Bit.is_set b 2) then 8 else 16 in
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let sprite_enable = Bit.is_set b 1 in
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let bg_display = Bit.is_set b 0 in
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{
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lcd_display_enable;
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tile_map_select;
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window_display_enable;
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tile_data_select;
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bg_tile_map_select;
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sprite_size;
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sprite_enable;
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bg_display;
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}
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let init_screen w h =
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{
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width = w;
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height = h;
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data = Array.make_matrix h w { r = 255; g = 255; b = 255; a = 255 }
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}
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