instant background change

background.vhd

@@ -20,12 +20,10 @@ architecture Behavioral of background is
 			clk25 : in bit);
 	end component;
 
-  signal chosen_background : STD_LOGIC_VECTOR (1 downto 0);
+	signal chosen_background : STD_LOGIC_VECTOR (1 downto 0);
 	signal rgb_farbw : STD_LOGIC_VECTOR (2 downto 0);
-	signal will_switch : bit;
 	signal deltaX : integer range 0 to 320;
 	signal deltaY : integer range 0 to 240;
-	signal count_up : integer range 0 to 25000000;
 	signal wobble_clock : integer range 0 to 400000 := 0;
 	signal wobble : integer range 0 to 64 := 32; 
 	signal wobble_growing : bit := '1';
@@ -42,18 +40,7 @@ begin
 	begin
 
 		if clk25'event and clk25 = '1' then
-
-			if switch = '1' then
-				will_switch <= '1';
-			end if;
-			count_up <= count_up + 1;
-			if count_up = 25000000 then
-				if will_switch = '1' then
-					chosen_background <= chosen_background + "01";
-					will_switch <= '0';
-				end if;
-				count_up <= 0;
-			end if;
+			chosen_background <= chosen_background + ( '0' & switch);
 
 			case chosen_background is
 

process_keys.vhd

@@ -1,19 +1,20 @@
-library IEEE;
+	library IEEE;
 use IEEE.STD_LOGIC_1164.ALL;
 use IEEE.STD_LOGIC_ARITH.ALL;
 use IEEE.STD_LOGIC_UNSIGNED.ALL;
 
 entity process_keys is
 	port (
-		keys_in : in std_logic_vector(13 downto 6);
+		keys_in : in std_logic_vector(13 downto 5);
 		reset: in bit;
 		game_over: in std_logic;
 		clk25: in bit;
 		hold_out: out std_logic;
 		inverse_out: out bit;
 		ballspeed_out : out std_logic_vector(1 downto 0);
 		paddlespeed_out : out bit;
-		AI_out: out std_logic
+		AI_out: out std_logic;
+		switch_out: out std_logic
 	);
 	end process_keys;
 
@@ -22,12 +23,28 @@ architecture Behavioral of process_keys	is
 	signal set_inverse_key: std_logic := '0';
 	signal set_paddlespeed_key: std_logic :='0';
 	signal set_AI_key: std_logic := '0';
+	signal set_switch_key: std_logic := '0';
 	signal Q_hold: std_logic := '1';
 	signal Q_inverse: bit := '0';
 	signal Q_paddlespeed: bit := '0';
 	signal Q_AI: std_logic := '0';
+
 begin
 
+	switch_key: process (clk25)
+	begin
+		if clk25'event and clk25='1' then
+			if keys_in(5)='1' and set_switch_key ='0' then 
+				switch_out <= '1';
+				set_switch_key <='1';
+			elsif set_switch_key ='1' then 
+				switch_out <= '0';
+				if keys_in(5)='0' then set_switch_key <= '0'; end if;
+			else switch_out <='0';
+			end if;
+		end if;
+	end process switch_key;
+
 	pause_key: process (clk25)
 	begin
 		if clk25'event and clk25='1' then

vga.vhd

@@ -25,15 +25,16 @@ architecture Behavioral of vga is
 
 	component process_keys  					
 		port (
-		keys_in : in std_logic_vector(13 downto 6);
+		keys_in : in std_logic_vector(13 downto 5);
 		reset: in bit;
 		game_over: in std_logic;
 		clk25: in bit;
 		hold_out: out std_logic;
 		inverse_out: out bit;
 		ballspeed_out : out std_logic_vector(1 downto 0);
 		paddlespeed_out : out bit;
-		AI_out: out std_logic
+		AI_out: out std_logic;
+		switch_out: out std_logic
 	);
 	end component;
 
@@ -141,6 +142,7 @@ architecture Behavioral of vga is
 	signal intermediate_ballpos : integer range 0 to 480;
 	signal intermediate_ai_enabled : std_logic;
 	signal intermediate_bar_right2 : integer range 0 to 430; -- output of AI
+	signal intermediate_switch_out : std_logic;
 
 begin
 
@@ -167,15 +169,16 @@ begin
 		keysout  => intermediate_keys);
 
 	verarbeite_keys : process_keys	port map (
-		keys_in => intermediate_keys(13 downto 6),
+		keys_in => intermediate_keys(13 downto 5),
 		reset => intermediate_reset,
 		game_over => intermediate_game_over,
 		clk25 => intermediate_clk25,
 		hold_out => intermediate_hold,
 		inverse_out => intermediate_inverse,
 		ballspeed_out => intermediate_ballspeed,
 		paddlespeed_out => intermediate_paddlespeed,
-		AI_out => intermediate_ai_enabled);
+		AI_out => intermediate_ai_enabled,
+		switch_out => intermediate_switch_out);
 
 	sigTime : SignalTiming port map (
 		hsync => intermediate_hsync,
@@ -185,7 +188,7 @@ begin
 		clk25 => intermediate_clk25);
 
 	bg : background port map (
-		switch => intermediate_keys(5), -- spacebar
+		switch => intermediate_switch_out, -- spacebar
 		X => intermediate_X,
 		Y => intermediate_Y,
 		rgb_out => intermediate_rgb1,