Tutorial combining design patterns

BEE_PLAYER.h

@@ -0,0 +1,18 @@
+// BEE_PLAYER.h
+#ifndef BEE_PLAYER_H
+#define BEE_PLAYER_H
+#include <vector>
+#include <memory>
+#include "RAIN.h"  // Include the definition
+class RAIN;
+class Obstacle;
+
+class BEE_PLAYER {
+public:
+    virtual ~BEE_PLAYER() {}
+    virtual void attach(std::shared_ptr<RAIN> RAIN) = 0;
+    virtual void detach(RAIN* RAIN) =0;
+    virtual void notify(RAIN* RAIN, bool is_collision) =0;
+};
+
+#endif  // BEE_PLAYER_H

GameManager.cpp

@@ -10,28 +10,43 @@ void GameManager::setPlayer(Player* player) {
     this->player = player;
 }
 
-void GameManager::addObstacle(Obstacle* obstacle) {
-    obstacles.push_back(std::move(obstacle));
-    player->attach(obstacle.get());  // Attach the newly created obstacle
+void GameManager::addObstacle(std::shared_ptr<Obstacle> obstacle_ptr) {
+    obstacles.push_back(obstacle_ptr);
+    player->attach(obstacle_ptr);  // Use shared_ptr instead of raw pointer
 }
 
 void GameManager::checkCollisions() {
     if (player == nullptr) return;
 
-    for (auto* obstacle : obstacles) {
-        if (player->get_x() < obstacle->get_x() + obstacle->get_width() &&
-            player->get_x() + player->get_width() > obstacle->get_x() &&
-            player->get_y() < obstacle->get_y() + obstacle->get_height() &&
-            player->get_y() + player->get_height() > obstacle->get_y()) 
+    for (const auto& obstacle_ptr : obstacles) {
+        Obstacle& obstacle = *obstacle_ptr;
+        if (player->get_x() < obstacle.get_x() + obstacle.get_width() &&
+            player->get_x() + player->get_width() > obstacle.get_x() &&
+            player->get_y() < obstacle.get_y() + obstacle.get_height() &&
+            player->get_y() + player->get_height() > obstacle.get_y()) 
         {
             // Notify player and obstacle about the collision
-            player->notify(obstacle, true);  // The player has collided with the obstacle
+            if (!obstacle.get_collision()) { // Collision started
+                player->notify(&obstacle, true);
+                Player::set_HP(Player::get_HP()-1); // Decrease player health on collision
+            }
+            draw_text("Collision detected!", COLOR_BLACK, "Arial", 24, player->get_x() + 10, player->get_y() - 50);
+        }
+        else {
+            if (obstacle.get_collision()) { // Collision ended
+                player->notify(&obstacle, false);
+            }
         }
     }
 }
 
 void GameManager::updateGameObjects() {
-    for (auto* obstacle : obstacles) {
-        obstacle->update();
+    for (const auto& obstacle_ptr : obstacles) {
+        Obstacle& obstacle = *obstacle_ptr;
+        obstacle.update();
+        obstacle.draw();
     }
 }
+
+
+

GameManager.h

@@ -10,14 +10,15 @@
 class GameManager {
 public:
     GameManager();
-    void addObstacle(Obstacle* obstacle);
+    void addObstacle(std::shared_ptr<Obstacle> obstacle_ptr);
     void setPlayer(Player* player);
     void checkCollisions();
     void updateGameObjects();
+    void clear_Obstacles(){obstacles.clear();};
 
 private:
     Player* player;
-    std::vector<std::unique_ptr<Obstacle>> obstacles;
+    std::vector<std::shared_ptr<Obstacle>> obstacles;
 };
 
 #endif // GAMEMANAGER_H

RAIN.h

@@ -0,0 +1,12 @@
+// RAIN.h
+#ifndef RAIN_H
+#define RAIN_H
+
+class RAIN {
+public:
+    virtual ~RAIN() {}
+    virtual void CollisionUpdate(bool is_collision)=0;
+    virtual void deceaseSpeed(int newSpeed)=0;
+};
+
+#endif  // RAIN_H

obstacle.cpp

@@ -33,7 +33,7 @@ void Obstacle::CollisionUpdate(bool is_collision) {
 
 void Obstacle::deceaseSpeed(int newSpeed){
     this->speed = newSpeed;
-    std::cout << "The Speed equal to 2 now" << std::endl;
+    //std::cout << "The Speed equal to 2 now" << std::endl;
 }
 
 

obstacle.h

@@ -2,9 +2,9 @@
 #ifndef OBSTACLE_H
 #define OBSTACLE_H
 
-#include"Observer.h"
+#include "RAIN.h"  
 #include "player.h"
-class Obstacle : public Observer {
+class Obstacle : public RAIN {
 public:
     Obstacle(float x, float y,int speed);
     float get_x() { return x; }

player.cpp

@@ -27,30 +27,31 @@ void Player::move_left() {
 
 }
 
-void Player::attach(Observer* observer) {
-    observers.push_back(observer);
+void Player::attach(std::shared_ptr<RAIN> RAIN) {
+    RAINs.push_back(RAIN);
 }
 
-void Player::detach(Observer* observer) {
-    auto it = std::remove(observers.begin(), observers.end(), observer);
-    if (it != observers.end()) {
-        std::cout << "Detaching observer" << std::endl;
-        observers.erase(it, observers.end());
-    }
+void Player::detach(RAIN* Rain) {
+    auto it = std::remove_if(RAINs.begin(), RAINs.end(),
+                             [&Rain](const std::shared_ptr<RAIN>& o) {
+                                 return o.get() == Rain;  // Compare the raw pointer
+                             });
+    RAINs.erase(it, RAINs.end());
 }
 
 
-void Player::notify(Observer* observer, bool is_collision) {
-    observer->CollisionUpdate(is_collision); // Call onCollision on the observer, passing this obstacle
+void Player::notify(RAIN* RAIN, bool is_collision) {
+    RAIN->CollisionUpdate(is_collision); // Call onCollision on the RAIN, passing this obstacle
 }
 
-void Player::notify_all_observers() {
-    std::cout << "Notifying all observers..." << std::endl;
-    for (Observer* observer : observers) {
-        if (observer == nullptr) {
-            std::cout << "Observer is null!" << std::endl;
-            continue;  // Skip null observers
+void Player::notify_all_RAINs() {
+    //std::cout << "Notifying all RAINs..." << std::endl;
+    for (auto& RAIN : RAINs) {
+        if (!RAIN) {
+            std::cout << "RAIN is null!" << std::endl;
+            continue;  // Skip null RAINs
         }
-        observer->deceaseSpeed(1); 
+        RAIN->deceaseSpeed(1);
     }
 }
+

player.h

@@ -2,12 +2,12 @@
 #ifndef PLAYER_H
 #define PLAYER_H
 
-#include "Subject.h"
+#include "BEE_PLAYER.h"
 #include "obstacle.h"
 #include <vector>
-#include "Observer.h"
+#include "RAIN.h"
 #include <memory>
-class Player : public Subject {
+class Player : public BEE_PLAYER {
 
 public:
     Player(float x, float y, float speed);
@@ -20,14 +20,15 @@ class Player : public Subject {
     float get_speed() { return speed; }
     static int get_HP(){return HP;}
     static void set_HP(int hp){HP = hp;}
-    void attach(Observer* observer) override;
-    void detach(class Observer* observer) ;
-    void notify(class Observer* observer, bool is_collision);
-    void notify_all_observers();
+    void attach(std::shared_ptr<RAIN> RAIN) override;
+    void detach(class RAIN* Rain) ;
+    void notify(class RAIN* RAIN, bool is_collision);
+    void notify_all_RAINs();
 private:
     float x, y, speed, width, height;
     static int HP;  
-    std::vector<Observer*> observers;
+    std::vector<std::shared_ptr<RAIN>> RAINs;
+
 };
 
 #endif  // PLAYER_H

program.cpp

@@ -5,12 +5,12 @@
 #include <cstdlib>
 #include "player.h"
 #include "obstacle.h"
-#include "Observer.h"
-#include "Subject.h"
+#include "RAIN.h"
+#include "BEE_PLAYER.h"
 #include <iostream>
 #include <memory>
 #include "GameManager.h"
-//skm g++ program.cpp player.cpp  obstacle.cpp -o game.exe
+//skm g++ program.cpp player.cpp  obstacle.cpp GameManager.cpp -o game.exe
 
 bitmap background = bitmap_named("images/Background.jpg");
 bitmap bee = bitmap_named("images/Bee.png");
@@ -36,9 +36,9 @@ void update_timer();
 void display_timer();
 void display_start_screen();
 void player_move(Player* player);
-void Spawn_obstacle(std::vector<std::unique_ptr<Obstacle>>& obstacles, Player* player, int& spawn_timer);
-void render(std::vector<std::unique_ptr<Obstacle>>& obstacles, Player& player);
-void check_game_over(std::vector<std::unique_ptr<Obstacle>>& obstacles,Player& player);
+void Spawn_obstacle(GameManager& gameManager, int& spawn_timer);
+void render(GameManager& gameManager, Player& player);
+void check_game_over(GameManager& gameManager,Player& player);
 void display_game_over_screen();
 
 void start_game() {
@@ -65,14 +65,14 @@ void display_start_screen() {
     draw_text("Press SPACE to Start", COLOR_BLACK, "Arial", 200, 550, 200);
 }
 
-void check_game_over(std::vector<std::unique_ptr<Obstacle>>& obstacles,Player& player) {
+void check_game_over(GameManager& gameManager,Player& player) {
     if (Player::get_HP() == 1) {
-        player.notify_all_observers();
+        player.notify_all_RAINs();
     }
     else if (Player::get_HP() <= 0) {
         game_over = true;
         game_started = false;  // Stop the game
-        obstacles.clear(); 
+        gameManager.clear_Obstacles();
     }
 }
 
@@ -81,38 +81,6 @@ void display_game_over_screen() {
     draw_text("Press SPACE to Restart", COLOR_WHITE, "Arial", 32, 510, 500);
 }
 
-template <typename T, typename U>
-bool is_colliding(T& obj1, U& obj2) {
-    float x1 = obj1.get_x();
-    float y1 = obj1.get_y();
-    float w1 = obj1.get_width();
-    float h1 = obj1.get_height();
-
-    float x2 = obj2.get_x();
-    float y2 = obj2.get_y();
-    float w2 = obj2.get_width();
-    float h2 = obj2.get_height();
-
-    // Check for collision
-    return (x1 < x2 + w2 && x1 + w1 > x2 && y1 < y2 + h2 && y1 + h1 > y2);
-}
-
-// Function to handle collision between two objects
-template <typename T, typename U>
-void handle_collision(T& subject, U& observer) {
-    if (is_colliding(subject, observer)) {
-        if (!observer.get_collision()) { // Collision started
-            subject.notify(&observer, true);
-            Player::set_HP(Player::get_HP()-1); // Decrease player health on collision
-        }
-        draw_text("Collision detected!", COLOR_BLACK, "Arial", 24, subject.get_x() + 10, subject.get_y() - 50);
-    } else {
-        if (observer.get_collision()) { // Collision ended
-            subject.notify(&observer, false);
-        }
-    }
-}
-
 void player_move(Player* player) {
     if (key_down(RIGHT_KEY) && player->get_x() <= RIGHT_BOUNDARY) {
         player->move_right();
@@ -127,13 +95,14 @@ void Spawn_obstacle(GameManager& gameManager, int& spawn_timer) {
     if (spawn_timer >= spawn_interval) {
         spawn_timer = 0;
         int spawn_x = rand() % RIGHT_BOUNDARY;  // Random x-coordinate between 0 and RIGHT_BOUNDARY
-        auto newObstacle = std::make_unique<Obstacle>(spawn_x, 0, 2);
-        gameManager.addObstacle(newObstacle);
+        std::shared_ptr<Obstacle> obstacle = std::make_shared<Obstacle>(spawn_x, 0, 2);
+        gameManager.addObstacle(obstacle);
+
     }
 }
 
 
-void render(std::vector<std::unique_ptr<Obstacle>>& obstacles, Player& player) {
+void render(GameManager& gameManager,Player& player) {
     // Redrawing the bitmap after every clear background and bee
     double center_x = player.get_x()+(player.get_width()/2);
     double center_y = player.get_y()+(player.get_height()/2);
@@ -149,22 +118,14 @@ void render(std::vector<std::unique_ptr<Obstacle>>& obstacles, Player& player) {
     // Draw the circle for debugging
     draw_circle(COLOR_RED,scaled_bee_circle); 
 
-    // Update and draw obstacles
-    for (const auto& obstacle_ptr : obstacles) {
-        // Dereference the unique_ptr to access the Obstacle object
-        Obstacle& obstacle = *obstacle_ptr;
-        obstacle.update();
-        obstacle.draw();
-        handle_collision(player, obstacle);
-    }
+    gameManager.updateGameObjects();
 }
 
 
 int main() {
     open_window("BeeFall", WINDOW_WIDTH, WINDOW_HEIGHT);  // Named window beefall and window size
     hide_mouse();  // Hide mouse while cursor is over the game window
     Player player(player_posx, player_posy, 10.0f);  // Initialize player
-    std::vector<std::unique_ptr<Obstacle>> obstacles;  // List of obstacles
     // Create game manager and add game objects
     GameManager gameManager;
     gameManager.setPlayer(&player);
@@ -206,15 +167,19 @@ int main() {
         player_move(&player);
 
         // Spawn obstacles
-        Spawn_obstacle(obstacles, &player, spawn_timer);
+        Spawn_obstacle(gameManager, spawn_timer);
+
+
 
         // Render game objects
-        render(obstacles, player);
+        render(gameManager,player);
 
+        gameManager.checkCollisions();
         // Update game elements
+
         update_timer();
         display_timer();
-        check_game_over(obstacles,player);
+        check_game_over(gameManager,player);
 
         refresh_screen(60);
     }