Integrate touch related development. (#90)

* * Add BuildActionIntention crap

* * Set Client and World projects to use MP compilation

* asd

* * Use the new BuildActionIntention to break and place blocks.

* * Reverse engineer the IArea system.

* * Copy break logic from survival into creative conditionally

* * Reverse IBuildInput and MouseHandler
* Replace the new relative paths in the client project with $(MC_ROOT) again

* * Reverse Multitouch, MouseDevice

* * Reverse a bunch of auxiliary classes for input.

* * Use CustomInputHolder instead of holding inputs manually.

* * Reverse a whole BUNCH of things!

* * Add feedback textures to the gitignore.

* * D-pad now renders! Also loads of other work.

* * More Stuff

* * Finish touch control bug fixing.

* * Finalize work.

* * One last thing..

* * Add a "cramped" mode to the options screen and start menu.

* * Oh, forgot to do something

source/client/player/input/PolygonArea.cpp

@@ -0,0 +1,43 @@
+#include "PolygonArea.hpp"
+#include "common/Utils.hpp"
+
+PolygonArea::PolygonArea(int count, const float* x, const float* y)
+{
+	m_count = count;
+	m_xPos = new float[count];
+	m_yPos = new float[count];
+
+	for (int i = 0; i < count; i++)
+	{
+		m_xPos[i] = x[i];
+		m_yPos[i] = y[i];
+	}
+}
+
+PolygonArea::~PolygonArea()
+{
+	SAFE_DELETE_ARRAY(m_xPos);
+	SAFE_DELETE_ARRAY(m_yPos);
+}
+
+bool PolygonArea::isInside(float x, float y)
+{
+	bool result = false;
+	
+	int idx = 0, idx2 = m_count - 1;
+	while (idx < m_count)
+	{
+		// horrible ass condition
+		if ((m_yPos[idx] <= y && m_yPos[idx2] > y || m_yPos[idx2] <= y && m_yPos[idx] > y)
+			&& ((((m_xPos[idx2] - m_xPos[idx]) * (y - m_yPos[idx]))
+				/ (m_yPos[idx2] - m_yPos[idx]))
+				+ m_xPos[idx]) > x)
+		{
+			result = !result;
+		}
+
+		idx2 = idx++;
+	}
+
+	return result;
+}