更新敌方坦克样式，增加简易ai判断

TankGame.srcs/sources_1/new/tank_move.v

@@ -3,7 +3,7 @@
 module tank_move(
            clk, reset_n, start,
            init_H, init_V,
-           tank_dir, tank_en, tank_move_en, moving,
+           tank_dir, tank_en, tank_move_en, player_enermy, moving,
            tank_H, tank_V, tank_dir_feedback
        );
 
@@ -16,6 +16,7 @@ input [ 10: 0 ] init_V;
 input [ 1: 0 ] tank_dir;
 input tank_en;
 input tank_move_en;
+input player_enermy;
 output reg [ 10: 0 ] tank_H;
 output reg [ 10: 0 ] tank_V;
 output reg [ 2: 0 ] tank_dir_feedback;
@@ -168,12 +169,13 @@ always @( posedge clk ) begin: tank_move_logic
 end
 
 reg [ 31: 0 ] counter;
+wire [ 31: 0 ] counter_num = player_enermy ? 2_500_000 : 3_000_000;
 always @( posedge clk ) begin
     if ( !reset_n ) begin
         counter <= 0;
         counter_move_en <= 0;
     end
-    else if ( counter == 5_000_000 ) begin
+    else if ( counter == counter_num ) begin
         counter <= 0;
         counter_move_en <= 1;
     end