GUI: warn on first import of a classic module

src/gui/gui.cpp

@@ -2460,6 +2460,20 @@ int FurnaceGUI::load(String path) {
     // warn the user
     showWarning(_("you have loaded a backup!\nif you need to, please save it somewhere.\n\nDO NOT RELY ON THE BACKUP SYSTEM FOR AUTO-SAVE!\nFurnace will not save backups of backups."),GUI_WARN_GENERIC);
   }
+
+  // if this is a PC module import, warn the user on the first import.
+  if (!tutorial.importedMOD && e->song.version==DIV_VERSION_MOD) {
+    showWarning(_("you have imported a ProTracker/SoundTracker/PC module!\nkeep the following in mind:\n\n- Furnace is not a replacement for your MOD player\n- import is not perfect. your song may sound different:\n  - E6x pattern loop is not supported\n\nhave fun!"),GUI_WARN_IMPORT);
+  }
+  if (!tutorial.importedS3M && e->song.version==DIV_VERSION_S3M) {
+    showWarning(_("you have imported a Scream Tracker 3 module!\nkeep the following in mind:\n\n- Furnace is not a replacement for your S3M player\n- import is not perfect. your song may sound different:\n  - OPL instruments may be detuned\n\nhave fun!"),GUI_WARN_IMPORT);
+  }
+  if (!tutorial.importedXM && e->song.version==DIV_VERSION_XM) {
+    showWarning(_("you have imported a FastTracker II module!\nkeep the following in mind:\n\n- Furnace is not a replacement for your XM player\n- import is not perfect. your song may sound different:\n  - envelopes have been converted to macros\n  - global volume changes are not supported\n\nhave fun!"),GUI_WARN_IMPORT);
+  }
+  if (!tutorial.importedIT && e->song.version==DIV_VERSION_IT) {
+    showWarning(_("you have imported an Impulse Tracker module!\nkeep the following in mind:\n\n- Furnace is not a replacement for your IT player\n- import is not perfect. your song may sound different:\n  - envelopes have been converted to macros\n  - global volume changes are not supported\n  - channel volume changes are not supported\n  - New Note Actions (NNA) are not supported\n\nhave fun!"),GUI_WARN_IMPORT);
+  }
   return 0;
 }
 
@@ -6464,6 +6478,26 @@ bool FurnaceGUI::loop() {
             ImGui::CloseCurrentPopup();
           }
           break;
+        case GUI_WARN_IMPORT:
+          if (ImGui::Button(_("Got it"))) {
+            switch (e->song.version) {
+              case DIV_VERSION_MOD:
+                tutorial.importedMOD=true;
+                break;
+              case DIV_VERSION_S3M:
+                tutorial.importedS3M=true;
+                break;
+              case DIV_VERSION_XM:
+                tutorial.importedXM=true;
+                break;
+              case DIV_VERSION_IT:
+                tutorial.importedIT=true;
+                break;
+            }
+            commitTutorial();
+            ImGui::CloseCurrentPopup();
+          }
+          break;
         case GUI_WARN_GENERIC:
           if (ImGui::Button(_("OK"))) {
             ImGui::CloseCurrentPopup();

src/gui/gui.h

@@ -650,6 +650,7 @@ enum FurnaceGUIWarnings {
   GUI_WARN_CLEAR_HISTORY,
   GUI_WARN_CV,
   GUI_WARN_RESET_CONFIG,
+  GUI_WARN_IMPORT,
   GUI_WARN_GENERIC
 };
 
@@ -2279,13 +2280,18 @@ class FurnaceGUI {
   struct Tutorial {
     bool introPlayed;
     bool protoWelcome;
+    bool importedMOD, importedS3M, importedXM, importedIT;
     Tutorial():
 #ifdef SUPPORT_XP
       introPlayed(true),
 #else
       introPlayed(false),
 #endif
-      protoWelcome(false) {
+      protoWelcome(false),
+      importedMOD(false),
+      importedS3M(false),
+      importedXM(false),
+      importedIT(false) {
     }
   } tutorial;
 

src/gui/tutorial.cpp

@@ -505,11 +505,19 @@ void FurnaceGUI::syncTutorial() {
   tutorial.introPlayed=e->getConfBool("tutIntroPlayed",false);
 #endif
   tutorial.protoWelcome=e->getConfBool("tutProtoWelcome2",false);
+  tutorial.importedMOD=e->getConfBool("tutImportedMOD",false);
+  tutorial.importedS3M=e->getConfBool("tutImportedS3M",false);
+  tutorial.importedXM=e->getConfBool("tutImportedXM",false);
+  tutorial.importedIT=e->getConfBool("tutImportedIT",false);
 }
 
 void FurnaceGUI::commitTutorial() {
   e->setConf("tutIntroPlayed",tutorial.introPlayed);
   e->setConf("tutProtoWelcome2",tutorial.protoWelcome);
+  e->setConf("tutImportedMOD",tutorial.importedMOD);
+  e->setConf("tutImportedS3M",tutorial.importedS3M);
+  e->setConf("tutImportedXM",tutorial.importedXM);
+  e->setConf("tutImportedIT",tutorial.importedIT);
 }
 
 void FurnaceGUI::initRandomDemoSong() {