select difficulty level (when play against bot) using a dedicated frame to show a graphics menu

src/font.cpp

@@ -212,3 +212,27 @@ const byte frame_cvc[MATRIX_HEIGHT][MATRIX_WIDTH] = {
 };
 
 const byte (*frame_gmodes[3])[12]= {frame_pvp, frame_pvc, frame_cvc};
+
+const byte frame_bot_skill_easy[MATRIX_HEIGHT][MATRIX_WIDTH] = {
+  { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 },
+  { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 },
+  { 0, 1, 0, 0, 0, 0, 0, 0, 0, 1, 1, 0 },
+  { 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0 },
+  { 0, 1, 0, 0, 1, 0, 1, 0, 0, 0, 1, 0 },
+  { 0, 1, 0, 0, 1, 0, 1, 0, 0, 0, 1, 0 },
+  { 0, 1, 1, 1, 0, 1, 0, 0, 0, 0, 1, 0 },
+  { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 }
+};
+
+const byte frame_bot_skill_hard[MATRIX_HEIGHT][MATRIX_WIDTH] = {
+  { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 },
+  { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 },
+  { 0, 1, 0, 0, 0, 0, 0, 0, 1, 1, 1, 0 },
+  { 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0 },
+  { 0, 1, 0, 0, 1, 0, 1, 0, 1, 1, 1, 0 },
+  { 0, 1, 0, 0, 1, 0, 1, 0, 1, 0, 0, 0 },
+  { 0, 1, 1, 1, 0, 1, 0, 0, 1, 1, 1, 0 },
+  { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 }
+};
+
+const byte (*frame_bot_skills[3])[12]= {frame_bot_skill_easy, frame_bot_skill_hard};

src/font.h

@@ -13,4 +13,8 @@ extern const byte frame_pvc[MATRIX_HEIGHT][MATRIX_WIDTH];
 extern const byte frame_cvc[MATRIX_HEIGHT][MATRIX_WIDTH];
 extern const byte (*frame_gmodes[3])[12];
 
+extern const byte frame_bot_skill_easy[MATRIX_HEIGHT][MATRIX_WIDTH];
+extern const byte frame_bot_skill_hard[MATRIX_HEIGHT][MATRIX_WIDTH];
+extern const byte (*frame_bot_skills[3])[12];
+
 #endif

src/paddle.cpp

@@ -44,10 +44,14 @@ bool Paddle::check_pad_movement(Ball &ball) {
   // redefine me
   return false;
 }
+
 uint8_t Paddle::get_skills() {
   return 0;
 }
 
+void Paddle::set_skills(uint8_t skills) {
+}
+
 bool HumanPaddle::check_pad_movement() {
   bool need_refresh= false;
   if (digitalRead(_pin_btn_top) == LOW) {
@@ -66,6 +70,8 @@ bool BotPaddle::check_pad_movement(Ball &ball) {
   int8_t ball_dir= ball.get_direction_x();
   int8_t ball_dir_ver= ball.get_direction_y();
 
+  uint8_t skills= this -> get_skills();
+
   // ball is moving left and pad is on right, do not move
   if (ball_dir < 0 && _pos_x > MATRIX_WIDTH / 2) return false;
   // ball is moving right and pad is on left, do not move
@@ -74,18 +80,18 @@ bool BotPaddle::check_pad_movement(Ball &ball) {
   uint8_t ball_x= ball.get_x();
   int8_t ball_distance= ball_x - _pos_x;
   if (ball_distance < 0) ball_distance *= -1;
-  switch (this -> get_skills()) {
+  switch (skills) {
     case 1:
-      if (ball_distance > 2) return false;
+      if (ball_distance > 3) return false;
       break;
     case 2:
-      if (ball_distance > 3) return false;
+      if (ball_distance > 4) return false;
       break;
   }
 
-  // TODO BotPaddle movement logics
-  // on higher difficult level i could also check the ball direction
-  // or at lover difficulty level i could also check the distance from the pad and move only when the ball si near
+  uint8_t move_chances= random(skills * 10) % 2;
+  if (!move_chances) return false;
+
   enum Movement {NONE, UP, DOWN};
   Movement _movment= NONE;
   
@@ -113,3 +119,9 @@ bool BotPaddle::check_pad_movement(Ball &ball) {
 uint8_t BotPaddle::get_skills() {
   return _skills;
 }
+
+void BotPaddle::set_skills(uint8_t skills) {
+  if (skills < 0) _skills= 0;
+  else if (skills > 1) _skills= 1;
+  else _skills= skills;
+}

src/paddle.h

@@ -27,6 +27,7 @@ class Paddle {
     virtual bool check_pad_movement();
     virtual bool check_pad_movement(Ball &ball);
     virtual uint8_t get_skills();
+    virtual void set_skills(uint8_t skills);
 };
 
 class HumanPaddle : public Paddle {
@@ -46,13 +47,11 @@ class BotPaddle : public Paddle {
     uint8_t _skills; // this is the difficulty level
 
   public:
-    BotPaddle(uint8_t position, uint8_t pos_x, uint8_t skills) 
-              : Paddle(position, false), _pos_x(pos_x), _skills(skills) {
-                if (_skills < 1) _skills= 1;
-                if (_skills > 2) _skills= 2;
-              }
+    BotPaddle(uint8_t position, uint8_t pos_x) 
+              : Paddle(position, false), _pos_x(pos_x) {}
     bool check_pad_movement(Ball &ball);
     uint8_t get_skills();
+    void set_skills(uint8_t skills);
 };
 
 #endif