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view.vhd.bak
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view.vhd.bak
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library ieee;
use ieee.numeric_std.all;
use ieee.std_logic_1164.all;
use work.base_package.all;
use work.vga_package.all;
entity view is
port
(
CLOCK : in std_logic;
RESET_N : in std_logic;
REDRAW : in std_logic;
FB_READY : in std_logic;
FB_CLEAR : out std_logic;
FB_FILL_RECT : out std_logic;
FB_FLIP : out std_logic;
FB_COLOR : out color_type;
FB_X0 : out xy_coord_type;
FB_Y0 : out xy_coord_type;
FB_X1 : out xy_coord_type;
FB_Y1 : out xy_coord_type;
QUERY_GUESS : out natural range 0 to GUESSES_NUMBER;
GUESS_CONTENT : in guess;
QUERY_HINT : out natural range 0 to GUESSES_NUMBER;
HINT_CONTENT : in hint;
GAME_WON : in std_logic;
GAME_LOST : in std_logic;
CURRENT_GUESS : in natural range 0 to (GUESSES_NUMBER - 1);
CURRENT_SQUARE : out natural range 0 to (SQUARES_NUMBER - 1)
);
end entity;
architecture RTL of view is
constant LEFT_MARGIN : integer := 8;
constant TOP_MARGIN : integer := 8;
constant SQUARE_SIZE : integer := 24;
constant SQUARE_SPACING : integer := 1;
type state_type is (IDLE, WAIT_FOR_READY, DRAWING);
type substate_type is (CLEAR_SCENE, DRAW_GUESS_BOARD, DRAW_GUESSES, DRAW_HINT_BOARD,
DRAW_HINTS, DRAW_SELECTABLE_COLORS, FLIP_FRAMEBUFFER);
signal state : state_type;
signal substate : substate_type;
signal query_guess : natural range 0 to GUESSES_NUMBER;
signal query_hint : natural range 0 to GUESSES_NUMBER;
signal current_square : natural range 0 to SQUARES_NUMBER;
begin
QUERY_GUESS <= query_guess;
QUERY_HINT <= query_hint;
process(CLOCK, RESET_N)
begin
if (RESET_N = '0') then
state <= IDLE;
substate <= CLEAR_SCENE;
FB_CLEAR <= '0';
-- TODO: controllare i 4 segnali sotto
FB_DRAW_RECT <= '0';
FB_DRAW_LINE <= '0';
FB_FILL_RECT <= '0';
FB_FLIP <= '0';
query_guess <= 0;
query_hint <= 0;
current_square <= 0;
elsif (rising_edge(CLOCK)) then
FB_CLEAR <= '0';
-- TODO: controllare i 4 segnali sotto
FB_DRAW_RECT <= '0';
FB_DRAW_LINE <= '0';
FB_FILL_RECT <= '0';
FB_FLIP <= '0';
case (state) is
when IDLE =>
if (REDRAW = '1') then
state <= WAIT_FOR_READY;
substate <= CLEAR_SCENE;
end if;
when WAIT_FOR_READY =>
if (FB_READY = '1') then
state <= DRAWING;
end if;
when DRAWING =>
state <= WAIT_FOR_READY;
case (substate) is
when CLEAR_SCENE =>
FB_COLOR <= COLOR_BLACK;
FB_CLEAR <= '1';
substate <= DRAW_GUESS_BOARD;
when DRAW_GUESS_BOARD =>
FB_COLOR <= COLOR_BROWN;
FB_X0 <= LEFT_MARGIN;
FB_Y0 <= TOP_MARGIN;
FB_X1 <= LEFT_MARGIN + SQUARES_NUMBER * (SQUARE_SIZE + SQUARE_SPACING);
FB_Y1 <= TOP_MARGIN + GUESSES_NUMBER * (SQUARE_SIZE + SQUARE_SPACING);
FB_FILL_RECT <= '1';
substate <= DRAW_GUESSES
when DRAW_GUESSES =>
FB_COLOR <= GUESS_CONTENT(current_square).guess_peg;
FB_X0 <= LEFT_MARGIN + SQUARE_SPACING * (current_square + 1) + SQUARE_SIZE * current_square;
FB_Y0 <= TOP_MARGIN + SQUARE_SPACING * (query_guess + 1) + SQUARE_SIZE * query_guess;
FB_X1 <= LEFT_MARGIN + SQUARE_SPACING * (current_square + 1) + SQUARE_SIZE * (current_square + 1);
FB_Y1 <= TOP_MARGIN + SQUARE_SPACING * (query_guess + 1) + SQUARE_SIZE * (query_guess + 1);
FB_FILL_RECT <= '1';
if (current_square + 1 < SQUARES_NUMBER) then
current_square <= current_square + 1;
substate <= DRAW_GUESSES;
else
current_square <= 0;
if (query_guess + 1 < CURRENT_GUESS) then
query_guess <= query_guess + 1;
substate <= DRAW_GUESSES;
else
query_guess <= 0;
substate <= DRAW_HINT_BOARD;
end if;
end if;
when DRAW_HINT_BOARD =>
FB_COLOR <= COLOR_BROWN;
FB_X0 <= LEFT_MARGIN * 2 + SQUARES_NUMBER * (SQUARE_SIZE + SQUARE_SPACING);
FB_Y0 <= TOP_MARGIN;
FB_X1 <= LEFT_MARGIN * 2 + (SQUARES_NUMBER * (SQUARE_SIZE + SQUARE_SPACING)) * 2;
FB_Y1 <= TOP_MARGIN + GUESSES_NUMBER * (SQUARE_SIZE + SQUARE_SPACING);
FB_FILL_RECT <= '1';
substate <= DRAW_HINTS
when DRAW_HINTS =>
FB_COLOR <= HINT_CONTENT(current_square).hint_peg;
FB_X0 <= LEFT_MARGIN * 2 + SQUARES_NUMBER * (SQUARE_SIZE + SQUARE_SPACING)
+ SQUARE_SPACING * (current_square + 1) + SQUARE_SIZE * current_square;
FB_Y0 <= TOP_MARGIN + SQUARE_SPACING * (query_hint + 1) + SQUARE_SIZE * query_hint;
FB_X1 <= LEFT_MARGIN * 2 + SQUARES_NUMBER * (SQUARE_SIZE + SQUARE_SPACING)
+ SQUARE_SPACING * (current_square + 1) + SQUARE_SIZE * (current_square + 1);
FB_Y1 <= TOP_MARGIN + SQUARE_SPACING * (query_hint + 1) + SQUARE_SIZE * (query_hint + 1);
FB_FILL_RECT <= '1';
if (current_square + 1 < SQUARES_NUMBER) and (HINT_CONTENT(current_square + 1).hint_peg /= COLOR_BROWN) then
current_square <= current_square + 1;
substate <= DRAW_HINTS;
else
current_square <= 0;
if (query_HINT + 1 < CURRENT_GUESS) then
query_hint <= query_hint + 1;
substate <= DRAW_HINTS;
else
query_hint <= 0;
substate <= FLIP_FRAMEBUFFER;
end if;
end if;
when FLIP_FRAMEBUFFER =>
FB_FLIP <= '1';
state <= IDLE;
end case;
end case;
end if;
end process;
end architecture;