System/MessageQueue: Use PlatformEventQueue

engine.build.lua

@@ -46,6 +46,7 @@ local platform_spec_module = Module("source/Platform/Win32", {
 	"Win32Keyboard.cpp",
 	"Win32Misc.cpp",
 	"Win32Mouse.cpp",
+	"Win32EventQueue.cpp",
 	"Win32MsgBuffer.cpp",
 	"Win32System.cpp",
 	"glad_wgl.c"

include/Spectre/System/MessageQueue.h

@@ -7,9 +7,14 @@
 
 namespace sp {
 
+class PlatformEventQueue;
+
 class MessageQueue
 {
 public :
+	MessageQueue();
+	~MessageQueue();
+
 	void postEvent(SysEvent event);
 
 	bool pollEvent(SysEvent& event);
@@ -18,6 +23,8 @@ public :
 
 protected :
 	std::deque<SysEvent> m_queue;
+
+	PlatformEventQueue* m_impl;
 };
 
 } // namespace sp

source/System/MessageQueue.cpp

@@ -1,8 +1,26 @@
 
 #include <Spectre/System/MessageQueue.h>
 
+#ifdef _WIN32
+#include <Platform/Win32/Win32EventQueue.h>
+typedef sp::Win32EventQueue ImplType;
+#else
+#error "No MessageQueue implementation exists"
+#endif
+
+
 namespace sp {
 
+MessageQueue::MessageQueue()
+{
+	m_impl = new ImplType();
+}
+
+MessageQueue::~MessageQueue()
+{
+	delete m_impl;
+}
+
 void MessageQueue::postEvent(SysEvent event)
 {
 	m_queue.push_back(event);
@@ -10,6 +28,11 @@ void MessageQueue::postEvent(SysEvent event)
 
 bool MessageQueue::pollEvent(SysEvent& event)
 {
+	// Process platform events first.
+	if (m_impl->poll(event)) {
+		return true;
+	}
+
 	if (!isEmpty()) {
 		event = m_queue.front();
 		m_queue.pop_front();