GB: Fix rumble support (MBC5)

- Fix missing call to rumble function on MBC5
- fix rumble flag gets disabled causing rumble not to work at all.

src/gb/GB.cpp

@@ -193,6 +193,7 @@ uint32_t gbTimeNow = 0;
 int gbSynchronizeTicks = GBSYNCHRONIZE_CLOCK_TICKS;
 // emulator features
 int gbBattery = 0;
+int gbRumble = 0;
 bool gbBatteryError = false;
 int gbCaptureNumber = 0;
 bool gbCapture = false;
@@ -2713,6 +2714,7 @@ void gbReset()
 
     memset(&gbDataMBC5, 0, sizeof(gbDataMBC5));
     gbDataMBC5.mapperROMBank = 1;
+    gbDataMBC5.isRumbleCartridge = gbRumble;
 
     memset(&gbDataHuC1, 0, sizeof(gbDataHuC1));
     gbDataHuC1.mapperROMBank = 1;
@@ -4335,6 +4337,8 @@ bool gbUpdateSizes()
         memset(gbRam, gbRamFill, gbRamSize);
     }
 
+    gbBattery = gbRumble = 0;
+
     switch (gbRomType) {
     case 0x03:
     case 0x06:
@@ -4351,17 +4355,15 @@ bool gbUpdateSizes()
         break;
     }
 
-    gbInit();
-
-    //gbReset();
-
     switch (gbRomType) {
     case 0x1c:
     case 0x1d:
     case 0x1e:
-        gbDataMBC5.isRumbleCartridge = 1;
+        gbRumble = 1;
     }
 
+    gbInit();
+
     return true;
 }
 

src/gb/gbMemory.cpp

@@ -560,9 +560,10 @@ void mapperMBC5ROM(uint16_t address, uint8_t value)
         }
         break;
     case 0x4000: // RAM bank select
-        if (gbDataMBC5.isRumbleCartridge)
+        if (gbDataMBC5.isRumbleCartridge) {
+            systemCartridgeRumble(value & 8);
             value &= 0x07;
-        else
+        } else
             value &= 0x0f;
         if (value == gbDataMBC5.mapperRAMBank)
             break;