99 lines
2.5 KiB
VHDL
99 lines
2.5 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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-- 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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Port ( X : in unsigned (9 downto 0);
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Y : in unsigned (8 downto 0);
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up : in std_logic;
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down : in std_logic;
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left : in std_logic;
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right : in std_logic;
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reset: in std_logic;
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snakePresent : out std_logic);
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end Gene_Snake;
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architecture Behavioral of Gene_Snake is
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type coord is array(0 to 39, 0 to 29) of unsigned(10 downto 0);
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type direction is (haut, bas, gauche, droite);
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type pos is record
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X: unsigned(9 downto 0);
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Y: unsigned(8 downto 0);
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dir: direction;
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isDefined: std_logic;
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end record;
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type listSnake is array(0 to 1200) of pos;
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signal mat: coord;
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signal snake: listSnake;
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signal snakeHere: std_logic;
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begin
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process(X,Y,mat,reset, snake)
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variable ref : unsigned(10 downto 0);
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variable position : pos;
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begin
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if(reset='0')
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then
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-- snake <= (others=>(to_unsigned(1023,10),to_unsigned(511,10)));
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for i in 0 to snake'length-1 loop
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if(i<100)
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then
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snake(i).X <= to_unsigned(0,10);
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snake(i).Y <= to_unsigned(0,9);
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snake(i).isDefined <= '1';
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else
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snake(i).X <= to_unsigned(1023,10);
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snake(i).Y <= to_unsigned(511,9);
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snake(i).isDefined <= '0';
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end if;
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end loop;
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for x in 0 to 39 loop
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for y in 0 to 29 loop
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mat(x,y) <= to_unsigned(y*40+x,11);
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end loop;
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end loop;
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end if;
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ref := mat(to_integer(X/16),to_integer(Y/16));
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position := snake(to_integer(ref));
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if(position.isDefined = '0')
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then
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snakeHere <= '0';
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else
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snakeHere <= '1';
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end if;
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end process;
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snakePresent <= snakeHere;
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end Behavioral;
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