From 295e5376ca2a765d77b092844ba16f272ea31d7b Mon Sep 17 00:00:00 2001
From: miguel <miguel@localhost>
Date: Sat, 23 Sep 2017 11:28:05 +0200
Subject: first mixer (just adding music and coins)

---
 Makefile |  2 +-
 main.cpp | 30 +++++++++++++++++++++++++-----
 2 files changed, 26 insertions(+), 6 deletions(-)

diff --git a/Makefile b/Makefile
index a5714ec..af6cd3d 100644
--- a/Makefile
+++ b/Makefile
@@ -15,4 +15,4 @@ clean:
 browser-game:
 	emcc --std=c++11 -O2 World.cpp -o World.bc
 	emcc --std=c++11 -O2 main.cpp -o main.bc
-	emcc -O2 World.bc main.bc -o lunatic_out.html -s USE_SDL=2 --preload-file coin.wav --preload-file coin.bmp --preload-file earth01.bmp --preload-file fonts.bmp --preload-file gridder01.bmp --preload-file guy01.bmp --preload-file guy02.bmp --preload-file gridder02.bmp --preload-file gridder03.bmp -s TOTAL_MEMORY=536870912 --shell-file shell_minimal.html
+	emcc -O2 World.bc main.bc -o lunatic_out.html -s USE_SDL=2 --preload-file music.wav --preload-file coin.wav --preload-file coin.bmp --preload-file earth01.bmp --preload-file fonts.bmp --preload-file gridder01.bmp --preload-file guy01.bmp --preload-file guy02.bmp --preload-file gridder02.bmp --preload-file gridder03.bmp -s TOTAL_MEMORY=536870912 --shell-file shell_minimal.html
diff --git a/main.cpp b/main.cpp
index 8fda90d..09431e3 100644
--- a/main.cpp
+++ b/main.cpp
@@ -49,19 +49,35 @@ struct Context
 
 
 static Uint32 wavLength;
+static Uint32 wavLength2;
 static Uint8 *wavBuffer;
+static Uint8 *wavBuffer2;
 
 int sample=0;
+int sample2=0;
 
 void audiomixer(void *userdata, Uint8 *stream, int len)
 {
+	SDL_memset(stream, 0, len);  // make sure this is silence.
+	
 	int volume=15000;
 
 	for(int i=0;i<len;i++)
 	{
-		stream[i]=wavBuffer[sample];
-		if(sample>wavLength)stream[i]=0;
+		if(sample<wavLength)
+		{
+			stream[i]+=wavBuffer[sample];
+		}
+
+		if(sample2>=wavLength2)
+		{
+			sample2=0;
+		}
+
+		stream[i]+=wavBuffer2[sample2];
+
 		sample++;
+		sample2++;
 	}
 	return;
 
@@ -113,11 +129,14 @@ void sdl_play_sound()
 		std::cout << "---desired load wav---" << std::endl;
 		show_AudioSpec(&wavSpec);
 
-		SDL_AudioSpec *spec=SDL_LoadWAV("coin.wav", &wavSpec, &wavBuffer, &wavLength);
+		SDL_LoadWAV("coin.wav", &wavSpec, &wavBuffer, &wavLength);
+		sample=wavLength;
+		SDL_LoadWAV("music.wav", &wavSpec, &wavBuffer2, &wavLength2);
 
-		std::cout << "---desired load wav---" << std::endl;
-		show_AudioSpec(&wavSpec);
+		//std::cout << "---desired load wav---" << std::endl;
+		//show_AudioSpec(&wavSpec);
 		std::cout << "---wav source data---" << std::endl;
+/*
 		if(spec==NULL)
 		{	
 		
@@ -125,6 +144,7 @@ void sdl_play_sound()
 			exit(-1);
 		}
 		show_AudioSpec(spec);
+*/
 		// open most reasonable default device for playback. 
 		std::cout << "---" << std::endl;
 		wavSpec.callback = audiomixer;
-- 
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