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view.vhd
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view.vhd
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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;
use work.text_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_DRAW_EMPTY_RECT : out std_logic;
FB_DRAW_FILLED_RECT : out std_logic;
FB_DRAW_TEXT : 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;
FB_TEXT : out message;
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;
CHECK : in guess;
GAME_WON : in std_logic;
GAME_LOST : in std_logic;
CURRENT_GUESS : in natural range 0 to (GUESSES_NUMBER - 1);
CURRENT_SQUARE : in natural range 0 to (SQUARES_NUMBER - 1);
CURRENT_COLOR : in guess_peg;
SHOW_SECRET : in std_logic
);
end entity;
architecture RTL of view is
constant CENTER_X : xy_coord_type := 512/2;
constant CENTER_Y : xy_coord_type := 480/2;
constant LEFT_MARGIN : positive := 8;
constant TOP_MARGIN : positive := 8;
constant SQUARE_SIZE : positive := 24;
constant SQUARE_SPACING : positive := 4;
constant LEFT_SPACING_TO_CENTER : positive := CENTER_X -
(LEFT_MARGIN * 2 + (SQUARES_NUMBER * (SQUARE_SIZE + SQUARE_SPACING)) * 2 + SQUARE_SPACING) / 2;
constant TOP_SPACING_TO_CENTER : positive := 32;
constant BACKGROUND_COLOR : color_type := COLOR_BLACK;
constant TABLES_COLOR : color_type := COLOR_BROWN;
constant SELECTION_COLOR : color_type := COLOR_WHITE;
constant TEXT_COLOR : color_type := COLOR_WHITE;
type colors_array is array(natural range<>) of color_type;
constant GUESS_PEG_COLORS : colors_array(0 to (COLORS_NUMBER - 1)) :=
(0 => COLOR_ORANGE, 1 => COLOR_RED, 2 => COLOR_GREEN, 3 => COLOR_BLUE, 4 => COLOR_YELLOW,
5 => COLOR_CYAN, 6 => COLOR_MAGENTA, 7 => COLOR_PURPLE);
constant HINT_PEG_COLORS : colors_array(0 to (HINTS_NUMBER - 1)) :=
(0 => COLOR_BLACK, 1 => COLOR_WHITE, 2 => COLOR_BROWN);
type state_type is (IDLE, WAIT_FOR_READY, DRAWING);
signal state : state_type;
type substate_type is (CLEAR_SCENE, DRAW_INITIAL_TEXT, DRAW_INTRO_TEXT, DRAW_GAME_LOST,
DRAW_CHECK_GUESS, DRAW_GAME_WON, DRAW_GUESS_BOARD, DRAW_GUESSES,
DRAW_HINT_BOARD, DRAW_HINTS, DRAW_SQUARE_BORDER,
DRAW_SELECTABLE_COLORS, DRAW_SELECTED_COLOR_BORDER,
DRAW_SECRET, FLIP_FRAMEBUFFER);
signal substate : substate_type;
signal query_guess_r : natural range 0 to GUESSES_NUMBER;
signal query_hint_r : natural range 0 to GUESSES_NUMBER;
signal square_to_draw : natural range 0 to SQUARES_NUMBER;
function guess_peg_to_color(x : guess_peg)
return color_type is
begin
return GUESS_PEG_COLORS(x);
end function;
function hint_peg_to_color(x : hint_peg)
return color_type is
begin
return HINT_PEG_COLORS(hint_peg'POS(x));
end function;
begin
QUERY_GUESS <= query_guess_r;
QUERY_HINT <= query_hint_r;
process(CLOCK, RESET_N)
variable initial_screen : std_logic := '1';
variable color_to_show : natural := 0;
begin
if (RESET_N = '0') then
state <= IDLE;
substate <= CLEAR_SCENE;
FB_CLEAR <= '0';
FB_DRAW_EMPTY_RECT <= '0';
FB_DRAW_FILLED_RECT <= '0';
FB_DRAW_TEXT <= '0';
FB_FLIP <= '0';
initial_screen := '1';
query_guess_r <= 0;
query_hint_r <= 0;
square_to_draw <= 0;
elsif (rising_edge(CLOCK)) then
FB_CLEAR <= '0';
FB_DRAW_FILLED_RECT <= '0';
FB_DRAW_EMPTY_RECT <= '0';
FB_DRAW_TEXT <= '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 <= BACKGROUND_COLOR;
FB_CLEAR <= '1';
if initial_screen = '1' then
initial_screen := '0';
substate <= DRAW_INITIAL_TEXT;
elsif GAME_WON = '1' then
substate <= DRAW_GAME_WON;
elsif GAME_LOST = '1' then
substate <= DRAW_GAME_LOST;
else
substate <= DRAW_GUESS_BOARD;
end if;
when DRAW_INITIAL_TEXT =>
FB_COLOR <= TEXT_COLOR;
FB_TEXT <= TITLE;
FB_X0 <= TEXT_X - (TITLE_TEXT'length * FONT_WIDTH) / 2;
FB_Y0 <= TEXT_Y - FONT_HEIGHT / 2;
FB_X1 <= TEXT_X + (TITLE_TEXT'length * FONT_WIDTH) / 2;
FB_Y1 <= TEXT_Y + FONT_HEIGHT / 2;
FB_DRAW_TEXT <= '1';
substate <= DRAW_INTRO_TEXT;
when DRAW_INTRO_TEXT =>
FB_COLOR <= TEXT_COLOR;
FB_TEXT <= INTRO;
FB_X0 <= TEXT_X - (INTRO_TEXT'length * FONT_WIDTH) / 2;
FB_Y0 <= TEXT_Y - FONT_HEIGHT / 2 + FONT_HEIGHT * 4;
FB_X1 <= TEXT_X + (INTRO_TEXT'length * FONT_WIDTH) / 2;
FB_Y1 <= TEXT_Y + FONT_HEIGHT / 2 + FONT_HEIGHT * 4;
FB_DRAW_TEXT <= '1';
substate <= FLIP_FRAMEBUFFER;
when DRAW_GAME_WON =>
FB_COLOR <= TEXT_COLOR;
FB_TEXT <= WIN;
FB_X0 <= TEXT_X - (WIN_TEXT'length * FONT_WIDTH) / 2;
FB_Y0 <= TEXT_Y - FONT_HEIGHT / 2;
FB_X1 <= TEXT_X + (WIN_TEXT'length * FONT_WIDTH) / 2;
FB_Y1 <= TEXT_Y + FONT_HEIGHT / 2;
FB_DRAW_TEXT <= '1';
substate <= DRAW_CHECK_GUESS;
when DRAW_GAME_LOST =>
FB_COLOR <= TEXT_COLOR;
FB_TEXT <= LOSE;
FB_X0 <= TEXT_X - (LOSE_TEXT'length * FONT_WIDTH) / 2;
FB_Y0 <= TEXT_Y - FONT_HEIGHT / 2;
FB_X1 <= TEXT_X + (LOSE_TEXT'length * FONT_WIDTH) / 2;
FB_Y1 <= TEXT_Y + FONT_HEIGHT / 2;
FB_DRAW_TEXT <= '1';
substate <= DRAW_CHECK_GUESS;
when DRAW_CHECK_GUESS =>
FB_COLOR <= guess_peg_to_color(CHECK(square_to_draw));
FB_X0 <= TEXT_X - (SQUARES_NUMBER * SQUARE_SIZE + (SQUARES_NUMBER) * SQUARE_SPACING) / 2
+ SQUARE_SPACING * (square_to_draw + 1) + SQUARE_SIZE * square_to_draw;
FB_Y0 <= TEXT_Y + FONT_HEIGHT * 2;
FB_X1 <= TEXT_X - (SQUARES_NUMBER * SQUARE_SIZE + (SQUARES_NUMBER - 1) * SQUARE_SPACING) / 2
+ SQUARE_SPACING * (square_to_draw + 1) + SQUARE_SIZE * (square_to_draw + 1);
FB_Y1 <= TEXT_Y + FONT_HEIGHT * 2 + SQUARE_SPACING + SQUARE_SIZE;
FB_DRAW_FILLED_RECT <= '1';
if (square_to_draw + 1 < SQUARES_NUMBER) then
square_to_draw <= square_to_draw + 1;
substate <= DRAW_CHECK_GUESS;
else
square_to_draw <= 0;
substate <= FLIP_FRAMEBUFFER;
end if;
when DRAW_GUESS_BOARD =>
FB_COLOR <= TABLES_COLOR;
FB_X0 <= LEFT_MARGIN + LEFT_SPACING_TO_CENTER;
FB_Y0 <= TOP_MARGIN + TOP_SPACING_TO_CENTER;
FB_X1 <= LEFT_MARGIN + LEFT_SPACING_TO_CENTER
+ SQUARES_NUMBER * (SQUARE_SIZE + SQUARE_SPACING)
+ SQUARE_SPACING;
FB_Y1 <= TOP_MARGIN + TOP_SPACING_TO_CENTER + GUESSES_NUMBER * (SQUARE_SIZE + SQUARE_SPACING) + SQUARE_SPACING;
FB_DRAW_FILLED_RECT <= '1';
substate <= DRAW_GUESSES;
when DRAW_GUESSES =>
FB_COLOR <= guess_peg_to_color(GUESS_CONTENT(square_to_draw));
FB_X0 <= LEFT_MARGIN + LEFT_SPACING_TO_CENTER + SQUARE_SPACING * (square_to_draw + 1) + SQUARE_SIZE * square_to_draw;
FB_Y0 <= TOP_MARGIN + TOP_SPACING_TO_CENTER + SQUARE_SPACING * (query_guess_r + 1) + SQUARE_SIZE * query_guess_r;
FB_X1 <= LEFT_MARGIN + LEFT_SPACING_TO_CENTER + SQUARE_SPACING * (square_to_draw + 1) + SQUARE_SIZE * (square_to_draw + 1);
FB_Y1 <= TOP_MARGIN + TOP_SPACING_TO_CENTER + SQUARE_SPACING * (query_guess_r + 1) + SQUARE_SIZE * (query_guess_r + 1);
FB_DRAW_FILLED_RECT <= '1';
if (square_to_draw + 1 < SQUARES_NUMBER) then
square_to_draw <= square_to_draw + 1;
substate <= DRAW_GUESSES;
else
square_to_draw <= 0;
if (query_guess_r + 1 <= CURRENT_GUESS) then
query_guess_r <= query_guess_r + 1;
substate <= DRAW_GUESSES;
else
query_guess_r <= 0;
substate <= DRAW_HINT_BOARD;
end if;
end if;
when DRAW_HINT_BOARD =>
FB_COLOR <= TABLES_COLOR;
FB_X0 <= LEFT_MARGIN * 2 + LEFT_SPACING_TO_CENTER + SQUARES_NUMBER * (SQUARE_SIZE + SQUARE_SPACING) + SQUARE_SPACING;
FB_Y0 <= TOP_MARGIN + TOP_SPACING_TO_CENTER;
FB_X1 <= LEFT_MARGIN * 2 + LEFT_SPACING_TO_CENTER + (SQUARES_NUMBER * (SQUARE_SIZE + SQUARE_SPACING)) * 2 + SQUARE_SPACING * 2;
FB_Y1 <= TOP_MARGIN + TOP_SPACING_TO_CENTER + GUESSES_NUMBER * (SQUARE_SIZE + SQUARE_SPACING) + SQUARE_SPACING;
FB_DRAW_FILLED_RECT <= '1';
if CURRENT_GUESS > 0 then
substate <= DRAW_HINTS;
else
substate <= DRAW_SQUARE_BORDER;
end if;
when DRAW_HINTS =>
FB_COLOR <= hint_peg_to_color(HINT_CONTENT(square_to_draw));
FB_X0 <= LEFT_MARGIN * 2 + LEFT_SPACING_TO_CENTER + SQUARES_NUMBER * (SQUARE_SIZE + SQUARE_SPACING) + SQUARE_SPACING
+ SQUARE_SPACING * (square_to_draw + 1) + SQUARE_SIZE * square_to_draw;
FB_Y0 <= TOP_MARGIN + TOP_SPACING_TO_CENTER + SQUARE_SPACING * (query_hint_r + 1) + SQUARE_SIZE * query_hint_r;
FB_X1 <= LEFT_MARGIN * 2 + LEFT_SPACING_TO_CENTER + SQUARES_NUMBER * (SQUARE_SIZE + SQUARE_SPACING)
+ SQUARE_SPACING * (square_to_draw + 2) + SQUARE_SIZE * (square_to_draw + 1);
FB_Y1 <= TOP_MARGIN + TOP_SPACING_TO_CENTER + SQUARE_SPACING * (query_hint_r + 1) + SQUARE_SIZE * (query_hint_r + 1);
FB_DRAW_FILLED_RECT <= '1';
if (square_to_draw + 1 < SQUARES_NUMBER) and (HINT_CONTENT(square_to_draw + 1) /= NOTHING) then
square_to_draw <= square_to_draw + 1;
substate <= DRAW_HINTS;
else
square_to_draw <= 0;
if (query_hint_r + 1 < CURRENT_GUESS) then
query_hint_r <= query_hint_r + 1;
substate <= DRAW_HINTS;
else
query_hint_r <= 0;
substate <= DRAW_SQUARE_BORDER;
end if;
end if;
when DRAW_SQUARE_BORDER =>
FB_COLOR <= SELECTION_COLOR;
FB_X0 <= LEFT_MARGIN + LEFT_SPACING_TO_CENTER
+ SQUARE_SPACING * CURRENT_SQUARE
+ SQUARE_SIZE * CURRENT_SQUARE;
FB_Y0 <= TOP_MARGIN + TOP_SPACING_TO_CENTER + SQUARE_SPACING * CURRENT_GUESS
+ SQUARE_SIZE * CURRENT_GUESS;
FB_X1 <= LEFT_MARGIN + LEFT_SPACING_TO_CENTER +
SQUARE_SPACING * (CURRENT_SQUARE + 2)
+ SQUARE_SIZE * (CURRENT_SQUARE + 1);
FB_Y1 <= TOP_MARGIN + TOP_SPACING_TO_CENTER + SQUARE_SPACING * (CURRENT_GUESS + 2)
+ SQUARE_SIZE * (CURRENT_GUESS + 1);
FB_DRAW_EMPTY_RECT <= '1';
substate <= DRAW_SELECTABLE_COLORS;
when DRAW_SELECTABLE_COLORS =>
FB_COLOR <= GUESS_PEG_COLORS(square_to_draw);
FB_X0 <= LEFT_MARGIN + LEFT_SPACING_TO_CENTER + (SQUARE_SPACING + LEFT_MARGIN) / 2
+ SQUARE_SPACING * (square_to_draw + 1)
+ SQUARE_SIZE * square_to_draw;
FB_Y0 <= TOP_MARGIN + TOP_SPACING_TO_CENTER * 3
+ GUESSES_NUMBER * (SQUARE_SIZE + SQUARE_SPACING)
+ SQUARE_SPACING;
FB_X1 <= LEFT_MARGIN + LEFT_SPACING_TO_CENTER
+ (SQUARE_SPACING + LEFT_MARGIN) / 2
+ SQUARE_SPACING * (square_to_draw + 1)
+ SQUARE_SIZE * (square_to_draw + 1);
FB_Y1 <= TOP_MARGIN + TOP_SPACING_TO_CENTER * 3
+ GUESSES_NUMBER * (SQUARE_SIZE + SQUARE_SPACING)
+ SQUARE_SPACING + SQUARE_SIZE;
FB_DRAW_FILLED_RECT <= '1';
if (square_to_draw + 1 < COLORS_NUMBER) then
square_to_draw <= square_to_draw + 1;
substate <= DRAW_SELECTABLE_COLORS;
else
square_to_draw <= 0;
substate <= DRAW_SELECTED_COLOR_BORDER;
end if;
when DRAW_SELECTED_COLOR_BORDER =>
FB_COLOR <= SELECTION_COLOR;
FB_X0 <= LEFT_MARGIN + LEFT_SPACING_TO_CENTER + (SQUARE_SPACING + LEFT_MARGIN) / 2
+ SQUARE_SPACING * CURRENT_COLOR
+ SQUARE_SIZE * CURRENT_COLOR;
FB_Y0 <= TOP_MARGIN + TOP_SPACING_TO_CENTER * 3
+ GUESSES_NUMBER * (SQUARE_SIZE + SQUARE_SPACING) ;
FB_X1 <= LEFT_MARGIN + LEFT_SPACING_TO_CENTER
+ (SQUARE_SPACING + LEFT_MARGIN) / 2
+ SQUARE_SPACING * (CURRENT_COLOR + 2)
+ SQUARE_SIZE * (CURRENT_COLOR + 1);
FB_Y1 <= TOP_MARGIN + TOP_SPACING_TO_CENTER * 3
+ GUESSES_NUMBER * (SQUARE_SIZE + SQUARE_SPACING)
+ SQUARE_SPACING * 2 + SQUARE_SIZE;
FB_DRAW_EMPTY_RECT <= '1';
if SHOW_SECRET = '1' then
substate <= DRAW_SECRET;
else
substate <= FLIP_FRAMEBUFFER;
end if;
when DRAW_SECRET =>
FB_COLOR <= guess_peg_to_color(CHECK(square_to_draw));
FB_X0 <= LEFT_MARGIN + LEFT_SPACING_TO_CENTER +
(LEFT_SPACING_TO_CENTER / 2)
+ SQUARE_SPACING * square_to_draw
+ SQUARE_SIZE * square_to_draw;
FB_Y0 <= TOP_MARGIN * 4 + TOP_SPACING_TO_CENTER * 3
+ GUESSES_NUMBER * (SQUARE_SIZE + SQUARE_SPACING)
+ SQUARE_SPACING + SQUARE_SIZE;
FB_X1 <= LEFT_MARGIN + LEFT_SPACING_TO_CENTER
+ (LEFT_SPACING_TO_CENTER / 2)
+ SQUARE_SPACING * square_to_draw
+ SQUARE_SIZE * (square_to_draw + 1);
FB_Y1 <= TOP_MARGIN * 4 + TOP_SPACING_TO_CENTER * 3
+ GUESSES_NUMBER * (SQUARE_SIZE + SQUARE_SPACING)
+ SQUARE_SPACING + SQUARE_SIZE * 2;
FB_DRAW_FILLED_RECT <= '1';
if (square_to_draw + 1 < SQUARES_NUMBER) then
square_to_draw <= square_to_draw + 1;
substate <= DRAW_SECRET;
else
square_to_draw <= 0;
substate <= FLIP_FRAMEBUFFER;
end if;
when FLIP_FRAMEBUFFER =>
FB_FLIP <= '1';
state <= IDLE;
end case;
end case;
end if;
end process;
end architecture;