control.v.bak

module control(idle_state, left_state, right_state, up_state, down_state,
					clk, reset, start, game_over,
				   left, up, down, right);
		
	input clk; // A special clock to update the snake's movement
	input left, up, down, right; // Input whether to go left, up, down or right respectively
	input game_over; // Indicates whether the game has ended
	input reset; // Indicates whether to restart the game
	input start; // Indicates whether we start the game
	
	// The different states that get activated
	output reg idle_state, left_state, right_state, up_state, down_state; 
	
	// State controllers
	reg [2:0] current_state, next_state;
	
	// Rename the States
	localparam
				IDLE_SNAKE = 3'd0,
				LEFT_DIRECTION = 3'd1,`ee
				UP_DIRECTION = 3'd2,
				RIGHT_DIRECTION = 3'd3,
				DOWN_DIRECTION = 3'd4;
				
	// Describe the state table
	
	always @(*) 
	begin 
		case (current_state) // Toggle through the states
				// Start the game when start is activated
				IDLE_SNAKE : next_state = start ? LEFT_DIRECTION : IDLE_SNAKE;
				
				LEFT_DIRECTION : // If going left...
				begin
					if (up) // Up was pressed
						next_state = UP_DIRECTION;
					else if (down) // Down was pressed 
						next_state = DOWN_DIRECTION;
					else // Anything else
						next_state = LEFT_DIRECTION; // Keep going left
				end
				
				UP_DIRECTION : // If going up...
				begin
					if (left) // Left was pressed
						next_state = LEFT_DIRECTION;
					else if (right) // Right was pressed
						next_state = RIGHT_DIRECTION;
					else // Keep going up
						next_state = UP_DIRECTION;
				end
			
				RIGHT_DIRECTION : // If going down...
				begin
					if (up) // Up was pressed
						next_state = UP_DIRECTION;
					else if (down) // Down was pressed
						next_state = DOWN_DIRECTION;
					else // Keep going right
						next_state = RIGHT_DIRECTION;
				end
				
				DOWN_DIRECTION : // If going down...
				begin
					if (left) // Left was pressed
						next_state = LEFT_DIRECTION;
					else if (right) // Right was pressed
						next_state = RIGHT_DIRECTION;
					else // Keep going down
						next_state = DOWN_DIRECTION;
				end
				
				default : next_state = IDLE_SNAKE;
		endcase
	end
	
	// Describe the output logic
	
	always @(*)
	begin
        idle_state = 1'b0; // By default make everything 0
        left_state = 1'b0;
        up_state = 1'b0;
		  right_state = 1'b0;
		  down_state = 1'b0;
		  
		  case(current_state)
				IDLE_SNAKE: idle_state = 1'b1;
				LEFT_DIRECTION: left_state = 1'b1;
				UP_DIRECTION: up_state = 1'b1;
				RIGHT_DIRECTION: right_state = 1'b1;
				DOWN_DIRECTION: down_state = 1'b1;
		  endcase	
	end

// Describe the State Register

always @(posedge clk) 
begin
		if (!reset || game_over) // Reset the circuit, or game over
			current_state <= IDLE_SNAKE; // Go back to idle state
		else // Go to next state
			current_state <= next_state;
end

endmodule