135 lines
4.4 KiB
VHDL
135 lines
4.4 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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currentSnakes : in nSnakes;
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listRefs : in addresses;
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tailIndex : in unsigned(SNAKE_ADDRESS_SIZE-1 downto 0);
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updateOrder : in std_logic;
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dataReady : in std_logic;
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cCaseX : out unsigned(5 downto 0);
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cCaseY : out unsigned(4 downto 0);
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dataRequest : out std_logic := '0';
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colorOut : out color;
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ROMAddress : out unsigned(SPRITES_ADDRESS_SIZE-1 downto 0) := (others => '0');
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ROMData : in std_logic_vector(SPRITES_DATA_SIZE-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 := '0'; --1 si on doit afficher le pixel 0 sinon
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signal startUpdate : std_logic := '0';
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signal request :std_logic := '0';
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signal snakeColor : color := (others => (others => '0'));
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begin
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process(reset,updateOrder,clk,request)
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variable sX,sY,sOff,iterInd : integer;
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begin
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if(reset = '0') then
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snakeHere <= '0';
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snakeColor <= (others => (others => '0'));
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else
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if(updateOrder'event and updateOrder = '1') then
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if(snakeHere = '1') then
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--snakeColor <= (others => (others => '1'));
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snakeColor <= to_color(ROMData);
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else
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snakeColor <= (others => (others => '0'));
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end if;
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startUpdate <= '1';
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end if;
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if(clk'event and clk = '1') then
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if(dataReady = '1') then
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request <= '0';
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for j in currentSnakes'LOW to currentSnakes'HIGH loop
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iterInd := (j + 5) rem 9;
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if(currentSnakes(iterInd).isDefined = '1' and to_integer(X)>=TO_INTEGER(currentSnakes(iterInd).X)-8 and to_integer(X)<TO_INTEGER(currentSnakes(iterInd).X)+8 and to_integer(Y)>=TO_INTEGER(currentSnakes(iterInd).Y)-8 and to_integer(Y)<TO_INTEGER(currentSnakes(iterInd).Y)+8) then
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snakeHere <= '1';
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sX := to_integer(currentSnakes(iterInd).dirX or "01") * (to_integer(X) - to_integer(currentSnakes(iterInd).X)) + 8 + to_integer(shift_right(currentSnakes(iterInd).dirX,1));
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sY := to_integer(currentSnakes(iterInd).dirY or "01") * (to_integer(Y) - to_integer(currentSnakes(iterInd).Y)) + 8 + to_integer(shift_right(currentSnakes(iterInd).dirY,1));
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if(listRefs(iterInd) = 0) then
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sOff := HEAD_SPRITE_OFFSET;
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elsif(listRefs(iterInd) = tailIndex) then
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sOff := TAIL_SPRITE_OFFSET;
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else
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sOff := BODY_SPRITE_OFFSET;
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end if;
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case currentSnakes(iterInd).dirY(0) is
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when '1' => ROMAddress <= to_unsigned(sX*16+sY+sOff,SPRITES_ADDRESS_SIZE);
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when '0' => ROMAddress <= to_unsigned(sY*16+sX+sOff,SPRITES_ADDRESS_SIZE);
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when others => NULL;
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end case;
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end if;
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end loop;
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end if;
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if(startUpdate = '1') then
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snakeHere <= '0';
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cCaseX <= X(9 downto 4);
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cCaseY <= Y(8 downto 4);
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request <= '1';
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end if;
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end if;
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if(request = '1') then
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startUpdate <= '0';
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end if;
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end if;
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end process;
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dataRequest <= request;
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colorOut <= snakeColor;
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end Behavioral;
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