From 11935fb52548fc1c41c041bde37b993bec76fba2 Mon Sep 17 00:00:00 2001
From: tildearrow <me@tildearrow.org>
Date: Sat, 31 Aug 2024 19:07:36 -0500
Subject: [PATCH] dev220: SNES anti-click

---
 src/engine/engine.h          |  6 +++---
 src/engine/fileOps/fur.cpp   | 10 ++++++++++
 src/engine/platform/snes.cpp | 12 ++++++++++++
 src/gui/sysConf.cpp          |  6 ++++++
 4 files changed, 31 insertions(+), 3 deletions(-)

diff --git a/src/engine/engine.h b/src/engine/engine.h
index 99501f8fe..e5c91fb33 100644
--- a/src/engine/engine.h
+++ b/src/engine/engine.h
@@ -52,10 +52,10 @@ class DivWorkPool;
 #define EXTERN_BUSY_BEGIN_SOFT e->softLocked=true; e->isBusy.lock();
 #define EXTERN_BUSY_END e->isBusy.unlock(); e->softLocked=false;
 
-//#define DIV_UNSTABLE
+#define DIV_UNSTABLE
 
-#define DIV_VERSION "0.6.7"
-#define DIV_ENGINE_VERSION 219
+#define DIV_VERSION "dev220"
+#define DIV_ENGINE_VERSION 220
 // for imports
 #define DIV_VERSION_MOD 0xff01
 #define DIV_VERSION_FC 0xff02
diff --git a/src/engine/fileOps/fur.cpp b/src/engine/fileOps/fur.cpp
index 5483d8fb9..1f0e74c4c 100644
--- a/src/engine/fileOps/fur.cpp
+++ b/src/engine/fileOps/fur.cpp
@@ -2102,6 +2102,16 @@ bool DivEngine::loadFur(unsigned char* file, size_t len, int variantID) {
       }
     }
 
+    // SNES no anti-click
+    if (ds.version<220) {
+      for (int i=0; i<ds.systemLen; i++) {
+        if (ds.system[i]==DIV_SYSTEM_SNES) {
+          ds.systemFlags[i].set("antiClick",false);
+        }
+      }
+    }
+
+
     if (active) quitDispatch();
     BUSY_BEGIN_SOFT;
     saveLock.lock();
diff --git a/src/engine/platform/snes.cpp b/src/engine/platform/snes.cpp
index 25b5077b2..085381537 100644
--- a/src/engine/platform/snes.cpp
+++ b/src/engine/platform/snes.cpp
@@ -255,6 +255,18 @@ void DivPlatformSNES::tick(bool sysTick) {
     }
   }
   if (koff!=0) {
+    // TODO: improve
+    if (antiClick) {
+      for (int i=0; i<8; i++) {
+        if (koff&(1<<i)) {
+          logV("KOFF: %d",i);
+          chWrite(i,5,0);
+          chWrite(i,7,0x9f);
+          chan[i].shallWriteEnv=true;
+        }
+      }
+      rWriteDelay(0x7e,0,64);
+    }
     rWriteDelay(0x5c,koff,8);
   }
   if (writeControl) {
diff --git a/src/gui/sysConf.cpp b/src/gui/sysConf.cpp
index 854caccfd..d474d867d 100644
--- a/src/gui/sysConf.cpp
+++ b/src/gui/sysConf.cpp
@@ -1970,6 +1970,7 @@ bool FurnaceGUI::drawSysConf(int chan, int sysPos, DivSystem type, DivConfig& fl
       echoFilter[7]=flags.getInt("echoFilter7",0);
 
       bool interpolationOff=flags.getBool("interpolationOff",false);
+      bool antiClick=flags.getBool("antiClick",true);
 
       ImGui::Text(_("Volume scale:"));
       if (CWSliderInt(_("Left##VolScaleL"),&vsL,0,127)) {
@@ -2090,6 +2091,10 @@ bool FurnaceGUI::drawSysConf(int chan, int sysPos, DivSystem type, DivConfig& fl
         altered=true;
       }
 
+      if (ImGui::Checkbox(_("Anti-click"),&antiClick)) {
+        altered=true;
+      }
+
       if (altered) {
         e->lockSave([&]() {
           flags.set("volScaleL",127-vsL);
@@ -2109,6 +2114,7 @@ bool FurnaceGUI::drawSysConf(int chan, int sysPos, DivSystem type, DivConfig& fl
           flags.set("echoFilter7",echoFilter[7]);
           flags.set("echoMask",echoMask);
           flags.set("interpolationOff",interpolationOff);
+          flags.set("antiClick",antiClick);
         });
       }