sound effect class created

Makefile

@@ -2,14 +2,14 @@
 CXX = g++
 
 #OBJS specifies which files to compile as part of the project
-OBJS = Button.cpp collision.cpp Game.cpp main.cpp MainMenu.cpp MyTexture.cpp MyWindow.cpp Player.cpp Screen.cpp Text.cpp Tile.cpp TileAtlas.cpp Timer.cpp
+OBJS = Button.cpp collision.cpp Game.cpp main.cpp MainMenu.cpp MyTexture.cpp MyWindow.cpp Player.cpp Screen.cpp Text.cpp Tile.cpp TileAtlas.cpp Timer.cpp SoundEffect.cpp
 
 #COMPILER_FLAGS specifies the additional compilation options we're using
 # -w suppresses all warnings
 COMPILER_FLAGS = -g
 
 #LINKER_FLAGS specifies the libraries we're linking against
-LINKER_FLAGS = -lSDL2 -lSDL2_image -lSDL2_ttf # -lSDL2_mixer
+LINKER_FLAGS = -lSDL2 -lSDL2_image -lSDL2_ttf -lSDL2_mixer
 
 #OBJ_NAME specifies the name of our exectuable
 OBJ_NAME = experiment.out

MyWindow.cpp

@@ -1,6 +1,7 @@
 #include <SDL2/SDL.h>
 #include <SDL2/SDL_image.h>
 #include <SDL2/SDL_ttf.h>
+#include <SDL2/SDL_mixer.h>
 #include <vector>
 #include <sstream>
 #include <string>
@@ -75,17 +76,13 @@ void LWindow::begin()
             }
 
             handleEvent(e);
-            // Handle input for the dot
-            // players[0].handleEvent(e);
+
             if (mCurrScreen != NULL)
             {
                 mCurrScreen->handleEvent(e);
             }
         }
-        // camera = {camera.x, camera.y, window.getWidth(), window.getHeight()};
-        // // Move the dot
-        // players[0].move();
-        // players[0].setCamera(camera);
+
         if (mCurrScreen != NULL)
         {
             mCurrScreen->update();
@@ -94,7 +91,7 @@ void LWindow::begin()
         {
             SDL_SetRenderDrawColor(mRenderer, 0xFF, 0xFF, 0xFF, 0xFF);
             SDL_RenderClear(mRenderer);
-            // window.render(renderables, camera);
+
             if (mCurrScreen != NULL)
             {
                 mCurrScreen->render(mRenderer);
@@ -111,6 +108,7 @@ void LWindow::begin()
 
     mCurrScreen->cleanUp();
     cleanUp();
+    Mix_Quit();
     IMG_Quit();
     SDL_Quit();
 }
@@ -207,7 +205,7 @@ bool LWindow::initLibs()
     // Initialization flag
 
     // Initialize SDL
-    if (SDL_Init(SDL_INIT_VIDEO) < 0)
+    if (SDL_Init(SDL_INIT_VIDEO | SDL_INIT_AUDIO ) < 0)
     {
         printf("SDL could not initialize! SDL Error: %s\n", SDL_GetError());
         return false;
@@ -233,6 +231,14 @@ bool LWindow::initLibs()
         return false;
     }
 
+    //Initialize SDL_mixer
+    if( Mix_OpenAudio( 44100, MIX_DEFAULT_FORMAT, 2, 1024 ) < 0 )
+    {
+        printf( "SDL_mixer could not initialize! SDL_mixer Error: %s\n", Mix_GetError() );
+        return false ; 
+    }
+    Mix_AllocateChannels(32);
+
     return true;
 }
 

Player.cpp

@@ -5,8 +5,9 @@
 #include "MyTexture.h"
 #include "Game.h"
 #include <iostream>
+#include<string>
 
-Player ::Player(LTexture &myTexture, LGame &game, int playerHeight, int playerWidth, int right, int left, int top, int bottom, int setVelocity) : mTexture(myTexture), mGame(game)
+Player ::Player(LTexture &myTexture, LGame &game, int playerHeight, int playerWidth, int right, int left, int top, int bottom, int setVelocity) : mTexture(myTexture), mGame(game) ,   wallCollisionMusic(std::string("collision.wav") ) 
 {
     // Initialize the collision box
     mBox.x = 0;
@@ -17,7 +18,12 @@ Player ::Player(LTexture &myTexture, LGame &game, int playerHeight, int playerWi
     // Initialize the velocity
     mVelX = 0;
     mVelY = 0;
-
+    // std::cout << "here1\n" ;  
+    // std::cout << "here2\n" ;    
+    // wallCollisionMusic.play() ; 
+    // SDL_Delay(1000) ; 
+    // wallCollisionMusic.play() ; 
+    // SDL_Delay(2000) ; 
     this->DOT_VEL = setVelocity;
     this->direction = 'D';
     this->playerHeight = playerHeight;
@@ -156,6 +162,7 @@ void Player::move()
     {
         // move back
         mBox.x -= mVelX;
+        // wallCollisionMusic.play() ; 
     }
 
     // Move the dot up or down
@@ -166,6 +173,7 @@ void Player::move()
     {
         // move back
         mBox.y -= mVelY;
+        // wallCollisionMusic.play() ; 
     }
 
 

Player.h

@@ -7,6 +7,7 @@
 #include "MyTexture.h"
 #include "Renderable.h"
 #include "MyWindow.h"
+#include"SoundEffect.h"
 #include <string>
 
 class LGame;
@@ -49,7 +50,7 @@ class Player : public Renderable
     LGame &mGame;
     SDL_Rect mBox;
     LTexture &mTexture;
-
+    SoundEffect wallCollisionMusic ; 
     // bool touchesWall(std::vector<Tile> tiles);
 
     // The velocity of the dot

SoundEffect.cpp

@@ -0,0 +1,75 @@
+#include"SoundEffect.h"
+#include<SDL2/SDL.h>
+#include<SDL2/SDL_mixer.h>
+#include<string>
+#include<iostream>
+#include<memory>
+
+SoundEffect::SoundEffect ()
+{
+    // initialize variables  
+    mMusic = NULL ; 
+}
+
+SoundEffect :: SoundEffect( std :: string filename ) 
+{
+    // initialize variables  
+    mMusic = NULL ; 
+    loadMusic( filename ) ; 
+
+}
+
+SoundEffect::~SoundEffect()
+{
+    // Deallocate
+    free();
+}
+
+// SoundEffect::SoundEffect(const std::string &path, int volume)
+//     : chunk(Mix_LoadWAV(path.c_str()), Mix_FreeChunk) {
+//     if (!chunk.get()) {
+//         // LOG("Couldn't load audio sample: ", path);
+//     }
+
+//     Mix_VolumeChunk(chunk.get(), volume);
+// }
+
+bool SoundEffect::loadMusic( std :: string filename )
+{
+    // get rid of pre-existing music 
+    free() ; 
+    std::cout << "loading music...\n" ; 
+    mMusic = Mix_LoadWAV( filename.c_str() ) ; 
+    if( mMusic == NULL ) {
+        printf( "Failed to load music!\n" );
+        std::cout << Mix_GetError() << "\n" ; 
+        return false ; 
+    }
+    std::cout << "loaded music...\n" ; 
+    return true ; 
+
+}
+
+void SoundEffect::free()
+{
+    // Free music if it exists
+    if (mMusic != NULL)
+    {
+        //Free the sound effects
+        Mix_FreeChunk( mMusic ) ; 
+        mMusic = NULL ; 
+
+    }
+}
+
+void SoundEffect::play()
+{
+    int channel = Mix_PlayChannel( -1, mMusic , 0  ) ; 
+    if( channel == -1 ){
+        printf("Mix_PlayChannel: %s\n",Mix_GetError());
+    }else{
+        std::cout << "playing on channel " << channel << "\n" ; 
+    }
+    SDL_Delay(1000) ; 
+    // Mix_PlayChannel(-1, chunk.get(), 0);
+}

SoundEffect.h

@@ -0,0 +1,20 @@
+#include<SDL2/SDL.h>
+#include<SDL2/SDL_mixer.h>
+#include<string>
+#include<memory>
+
+class SoundEffect 
+{
+    public: 
+        SoundEffect() ; 
+        SoundEffect( std :: string filename ) ; 
+        // SoundEffect( const std::string &path, int volume ) ; 
+        ~SoundEffect() ; 
+        bool loadMusic( std :: string filename ) ; 
+        void free();
+        void play() ; 
+    private: 
+        Mix_Chunk *mMusic ; 
+        // std::unique_ptr<Mix_Chunk, void (*)(Mix_Chunk *)> chunk;
+
+} ;