WaveSynth: initialize wave to 0 on SCC/Bubble Syst

src/engine/platform/bubsyswsg.cpp

@@ -306,7 +306,7 @@ void DivPlatformBubSysWSG::reset() {
   for (int i=0; i<2; i++) {
     chan[i]=DivPlatformBubSysWSG::Channel();
     chan[i].std.setEngine(parent);
-    chan[i].ws.setEngine(parent);
+    chan[i].ws.setEngine(parent,8);
     chan[i].ws.init(NULL,32,15,false);
   }
   if (dumpWrites) {

src/engine/platform/scc.cpp

@@ -332,7 +332,7 @@ void DivPlatformSCC::reset() {
   for (int i=0; i<5; i++) {
     chan[i]=DivPlatformSCC::Channel();
     chan[i].std.setEngine(parent);
-    chan[i].ws.setEngine(parent);
+    chan[i].ws.setEngine(parent,128);
     chan[i].ws.init(NULL,32,255,false);
     chan[i].vol=15;
     chan[i].outVol=15;

src/engine/waveSynth.cpp

@@ -243,8 +243,13 @@ void DivWaveSynth::changeWave2(int num) {
   first=true;
 }
 
-void DivWaveSynth::setEngine(DivEngine* engine) {
+void DivWaveSynth::setEngine(DivEngine* engine, int waveFloor) {
   e=engine;
+  memset(wave1,waveFloor,256);
+  memset(wave2,waveFloor,256);
+  for (int i=0; i<256; i++) {
+    output[i]=waveFloor;
+  }
 }
 
 void DivWaveSynth::init(DivInstrument* which, int w, int h, bool insChanged) {

src/engine/waveSynth.h

@@ -70,7 +70,7 @@ class DivWaveSynth {
      * @param insChanged whether the instrument has changed.
      */
     void init(DivInstrument* which, int width, int height, bool insChanged=false);
-    void setEngine(DivEngine* engine);
+    void setEngine(DivEngine* engine, int waveFloor=0);
     DivWaveSynth():
       e(NULL),
       pos(0),