120 lines
3.2 KiB
VHDL
120 lines
3.2 KiB
VHDL
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-- Company:
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-- Engineer:
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--
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-- Create Date: 30.11.2021 10:35:30
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-- Design Name:
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-- Module Name: Gene_Snake - Behavioral
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-- Project Name:
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-- Target Devices:
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-- Tool Versions:
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-- Description:
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--
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-- Dependencies:
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--
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-- Revision:
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-- Revision 0.01 - File Created
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-- Additional Comments:
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--
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----------------------------------------------------------------------------------
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-- a faire:
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-- - faire bouger le snake
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-- - ajouter une clk
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library IEEE;
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use IEEE.STD_LOGIC_1164.ALL;
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-- Uncomment the following library declaration if using
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-- arithmetic functions with Signed or Unsigned values
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use IEEE.NUMERIC_STD.ALL;
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library ourTypes;
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use ourTypes.types.all;
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-- Uncomment the following library declaration if instantiating
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-- any Xilinx leaf cells in this code.
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--library UNISIM;
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--use UNISIM.VComponents.all;
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entity Gene_Snake is
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generic( addressSize : integer:=10);
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Port ( X : in unsigned (9 downto 0);
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Y : in unsigned (8 downto 0);
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clk: in std_logic;
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reset: in std_logic;
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currentSnake : in pos;
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updateOrder : in std_logic;
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listRef : in unsigned(addressSize-1 downto 0);
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snakePresent : out std_logic;
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currentAddress : out unsigned(addressSize-1 downto 0);
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matAddress : out unsigned(addressSize-1 downto 0)
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);
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end Gene_Snake;
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architecture Behavioral of Gene_Snake is
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-- D???claration des signaux
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signal snakeHere: std_logic; --1 si on doit afficher le pixel 0 sinon
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signal dx : signed(2 downto 0);
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signal dy : signed(2 downto 0);
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signal running : std_logic;
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signal startUpdate : std_logic;
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signal snakePresentBuffer : std_logic;
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begin
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-- Process de calcul d'affichage
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process(X,Y,clk,reset,running,dx,dy,updateOrder,currentSnake,snakeHere,snakePresentBuffer)
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begin
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if(updateOrder'event and updateOrder = '1') then
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snakePresentBuffer <= snakeHere;
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startUpdate <= '1';
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end if;
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if(reset = '0') then
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running <= '0';
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snakeHere <= '0';
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snakePresentBuffer <= '0';
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elsif(clk'event and clk = '1') then
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if(startUpdate = '1') then
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running <= '1';
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snakeHere <= '0';
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dx <= to_signed(-1,3);
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dy <= to_signed(-1,3);
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end if;
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if(running = '1') then
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dx <= dx + 1;
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if(dx = 2) then
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dx <= to_signed(-1,3);
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dy <= dy + 1;
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end if;
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if(dy = 2) then
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dy <= to_signed(-1,3);
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running <= '0';
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end if;
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if(currentSnake.isDefined = '1') then
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--if(X>=currentSnake.X-8 and X<=currentSnake.X+8 and Y>=currentSnake.Y-8 and Y<=currentSnake.Y+8) then
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snakeHere <= '1';
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--end if;
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end if;
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end if;
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end if;
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if(running = '1') then
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startUpdate <= '0';
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end if;
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end process;
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matAddress <= resize(shift_right(to_unsigned(to_integer(Y)+to_integer(dy),9),4)*40+shift_right(to_unsigned(to_integer(X)+to_integer(dx),10),4),SNAKE_ADDRESS_SIZE); --on resize parce qu'il as décidé que le resultat faisait 18bits au lieu des 11 attendus
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--matAddress <= '0' & X/16;--resize(shift_right(Y,4)*40+shift_right(X,4),SNAKE_ADDRESS_SIZE);
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currentAddress <= listRef;
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snakePresent <= snakePresentBuffer;
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end Behavioral;
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