1 files changed, 138 insertions, 0 deletions
diff --git a/src/interface/Engine.cpp b/src/interface/Engine.cpp
new file mode 100644
index 0000000..4468561
--- /dev/null
+++ b/src/interface/Engine.cpp
@@ -0,0 +1,138 @@
+#include "interface/Platform.h"
+#include "interface/Engine.h"
+#include "interface/State.h"
+#include "Graphics.h"
+
+using namespace ui;
+
+Engine::Engine()
+:
+  g(NULL),
+state_(NULL),
+statequeued_(NULL),
+mousex_(0),
+mousey_(0),
+mousexp_(0),
+mouseyp_(0)
+{
+}
+
+Engine::~Engine()
+{
+	if(state_ != NULL)
+		delete state_;
+}
+
+void Engine::Begin(int width, int height, SDL_Surface * surface)
+{
+	g = new Graphics();
+	g->AttachSDLSurface(surface);
+	//engine is now ready
+	running_ = true;
+
+	width_ = width;
+	height_ = height;
+}
+
+void Engine::Exit()
+{
+	running_ = false;
+}
+
+void Engine::SetState(State * state)
+{
+	if(state_) //queue if currently in a state
+		statequeued_ = state;
+	else
+	{
+		state_ = state;
+		if(state_)
+			state_->DoInitialized();
+	}
+}
+
+void Engine::SetSize(int width, int height)
+{
+	width_ = width;
+	height_ = height;
+}
+
+void Engine::Tick(float dt)
+{
+	if(state_ != NULL)
+		state_->DoTick(dt);
+
+	if(statequeued_ != NULL)
+	{
+		if(state_ != NULL)
+		{
+			state_->DoExit();
+			delete state_;
+			state_ = NULL;
+		}
+		state_ = statequeued_;
+		statequeued_ = NULL;
+
+		if(state_ != NULL)
+			state_->DoInitialized();
+	}
+}
+
+void Engine::Draw()
+{
+	if(state_)
+		state_->DoDraw();
+	g->Blit();
+	g->Clear();
+}
+
+void Engine::onKeyPress(int key, bool shift, bool ctrl, bool alt)
+{
+	if(state_)
+		state_->DoKeyPress(key, shift, ctrl, alt);
+}
+
+void Engine::onKeyRelease(int key, bool shift, bool ctrl, bool alt)
+{
+	if(state_)
+		state_->DoKeyRelease(key, shift, ctrl, alt);
+}
+
+void Engine::onMouseClick(int x, int y, unsigned button)
+{
+	if(state_)
+		state_->DoMouseDown(x, y, button);
+}
+
+void Engine::onMouseUnclick(int x, int y, unsigned button)
+{
+	if(state_)
+		state_->DoMouseUp(x, y, button);
+}
+
+void Engine::onMouseMove(int x, int y)
+{
+	mousex_ = x;
+	mousey_ = y;
+	if(state_)
+		state_->DoMouseMove(x, y, mousex_ - mousexp_, mousey_ - mouseyp_);
+	mousexp_ = x;
+	mouseyp_ = y;
+}
+
+void Engine::onMouseWheel(int x, int y, int delta)
+{
+	if(state_)
+		state_->DoMouseWheel(x, y, delta);
+}
+
+void Engine::onResize(int newWidth, int newHeight)
+{
+	SetSize(newWidth, newHeight);
+}
+
+void Engine::onClose()
+{
+	if(state_)
+		state_->DoExit();
+}