CIrrDeviceLinux: Add support For TouchInput.touchedCount

source/Irrlicht/CIrrDeviceLinux.cpp

@@ -112,6 +112,9 @@ CIrrDeviceLinux::CIrrDeviceLinux(const SIrrlichtCreationParameters& param)
 	XDisplay(0), VisualInfo(0), Screennr(0), XWindow(0), StdHints(0), SoftwareImage(0),
 	XInputMethod(0), XInputContext(0),
 	HasNetWM(false),
+#endif
+#if defined(_IRR_LINUX_X11_XINPUT2_)
+	currentTouchedCount(0),
 #endif
 	Width(param.WindowSize.Width), Height(param.WindowSize.Height),
 	WindowHasFocus(false), WindowMinimized(false),
@@ -1051,6 +1054,14 @@ bool CIrrDeviceLinux::run()
 						irrevent.TouchInput.X = de->event_x;
 						irrevent.TouchInput.Y = de->event_y;
 
+						if (irrevent.TouchInput.Event == ETIE_PRESSED_DOWN) {
+							currentTouchedCount++;
+						}
+						irrevent.TouchInput.touchedCount = currentTouchedCount;
+						if (currentTouchedCount > 0 && irrevent.TouchInput.Event == ETIE_LEFT_UP) {
+							currentTouchedCount--;
+						}
+
 						postEventFromUser(irrevent);
 					}
 				}

source/Irrlicht/CIrrDeviceLinux.h

@@ -425,6 +425,10 @@ namespace irr
 		};
 		core::array<JoystickInfo> ActiveJoysticks;
 #endif
+
+#if defined(_IRR_LINUX_X11_XINPUT2_)
+		int currentTouchedCount;
+#endif
 	};
 
 

source/Irrlicht/CMakeLists.txt

@@ -37,6 +37,7 @@ set(CMAKE_REQUIRED_INCLUDES ${PROJECT_SOURCE_DIR}/include)
 unset(OGLES1_ENABLED CACHE)
 unset(OGLES2_ENABLED CACHE)
 unset(OGL_ENABLED CACHE)
+unset(XINPUT2_ENABLED CACHE)
 
 check_symbol_exists(_IRR_COMPILE_WITH_OGLES1_ "IrrCompileConfig.h" OGLES1_ENABLED)
 if(OGLES1_ENABLED)
@@ -55,6 +56,10 @@ if(OGL_ENABLED)
 	set(OpenGL_GL_PREFERENCE "LEGACY")
 	find_package(OpenGL REQUIRED)
 endif()
+check_symbol_exists(_IRR_LINUX_X11_XINPUT2_ "IrrCompileConfig.h" XINPUT2_ENABLED)
+if(XINPUT2_ENABLED)
+	find_library(XINPUT_LIBRARY Xi REQUIRED)
+endif()
 
 # Platform-specific libs
 
@@ -96,6 +101,7 @@ set(link_libs
 	${OPENGLES_LIBRARY}
 	${OPENGLES2_LIBRARIES}
 	${EGL_LIBRARY}
+	${XINPUT_LIBRARY}
 
 	"$<$<PLATFORM_ID:Android>:native_app_glue -landroid -llog>"
 	${COCOA_LIB}