implement chip cloning/duplication

muwahahaha

doc/8-advanced/chip-manager.md

@@ -6,8 +6,12 @@ the **chip manager** window allows you to manage chips, including adding, changi
 
 **Preserve channel order**: make existing pattern data stay in place even when chips are rearranged. when turned off, pattern data will be arranged to match (the default, and usually desired behavior).
 
+**Clone channel data**: when cloning chips, also copy patterns, pattern names, channel names and other parameters to the clone.
+
 to move a chip around, click and drag the ![crossed-arrows](chip-manager-move.png) button to the left.
 
+to duplicate a chip, click the **Clone** button.
+
 to replace a chip with a different one, click the **Change** button. this will display the chip selector.
 
 to remove a chip, click the ![X](chip-manager-remove.png) button.

src/engine/engine.cpp

@@ -1158,7 +1158,33 @@ bool DivEngine::duplicateSystem(int index, bool pat, bool end) {
 
   // duplicate patterns
   if (pat) {
-    
+    int srcChan=0;
+    int destChan=0;
+    for (int i=0; i<index; i++) {
+      srcChan+=getChannelCount(song.system[i]);
+    }
+    for (int i=0; i<song.systemLen-1; i++) {
+      destChan+=getChannelCount(song.system[i]);
+    }
+    for (DivSubSong* i: song.subsong) {
+      for (int j=0; j<getChannelCount(song.system[index]); j++) {
+        i->pat[destChan+j].effectCols=i->pat[srcChan+j].effectCols;
+        i->chanShow[destChan+j]=i->chanShow[srcChan+j];
+        i->chanShowChanOsc[destChan+j]=i->chanShowChanOsc[srcChan+j];
+        i->chanCollapse[destChan+j]=i->chanCollapse[srcChan+j];
+        i->chanName[destChan+j]=i->chanName[srcChan+j];
+        i->chanShortName[destChan+j]=i->chanShortName[srcChan+j];
+        for (int k=0; k<DIV_MAX_PATTERNS; k++) {
+          if (i->pat[srcChan+j].data[k]!=NULL) {
+            i->pat[srcChan+j].data[k]->copyOn(i->pat[destChan+j].getPattern(k,true));
+          }
+        }
+
+        for (int k=0; k<DIV_MAX_PATTERNS; k++) {
+          i->orders.ord[destChan+j][k]=i->orders.ord[srcChan+j][k];
+        }
+      }
+    }
   }
   saveLock.unlock();
   renderSamples();

src/gui/gui.cpp

@@ -7318,6 +7318,7 @@ FurnaceGUI::FurnaceGUI():
   displayPalette(false),
   fullScreen(false),
   preserveChanPos(false),
+  sysDupCloneChannels(true),
   wantScrollList(false),
   noteInputPoly(true),
   notifyWaveChange(false),

src/gui/gui.h

@@ -1503,7 +1503,7 @@ class FurnaceGUI {
   bool vgmExportDirectStream, displayInsTypeList, displayWaveSizeList;
   bool portrait, injectBackUp, mobileMenuOpen, warnColorPushed;
   bool wantCaptureKeyboard, oldWantCaptureKeyboard, displayMacroMenu;
-  bool displayNew, displayExport, displayPalette, fullScreen, preserveChanPos, wantScrollList, noteInputPoly, notifyWaveChange;
+  bool displayNew, displayExport, displayPalette, fullScreen, preserveChanPos, sysDupCloneChannels, wantScrollList, noteInputPoly, notifyWaveChange;
   bool displayPendingIns, pendingInsSingle, displayPendingRawSample, snesFilterHex, modTableHex, displayEditString;
   bool mobileEdit;
   bool killGraphics;

src/gui/sysManager.cpp

@@ -40,6 +40,8 @@ void FurnaceGUI::drawSysManager() {
   }
   if (ImGui::Begin("Chip Manager",&sysManagerOpen,globalWinFlags)) {
     ImGui::Checkbox("Preserve channel order",&preserveChanPos);
+    ImGui::SameLine();
+    ImGui::Checkbox("Clone channel data",&sysDupCloneChannels);
     if (ImGui::BeginTable("SystemList",3)) {
       ImGui::TableSetupColumn("c1",ImGuiTableColumnFlags_WidthFixed);
       ImGui::TableSetupColumn("c2",ImGuiTableColumnFlags_WidthStretch);
@@ -84,7 +86,7 @@ void FurnaceGUI::drawSysManager() {
         }
         ImGui::TableNextColumn();
         if (ImGui::Button("Clone##SysDup")) {
-          if (!e->duplicateSystem(i)) {
+          if (!e->duplicateSystem(i,sysDupCloneChannels)) {
             showError("cannot clone chip! ("+e->getLastError()+")");
           } else {
             MARK_MODIFIED;