first commit

Minecraft.World/DataLayer.cpp

@@ -0,0 +1,62 @@
+#include "stdafx.h"
+#include "DataLayer.h"
+
+DataLayer::DataLayer(int length, int depthBits) : depthBits(depthBits), depthBitsPlusFour(depthBits + 4)
+{
+	data = byteArray(length >> 1);
+}
+
+DataLayer::DataLayer(byteArray data, int depthBits) : depthBits(depthBits), depthBitsPlusFour(depthBits + 4)
+{
+	this->data = data;
+}
+
+DataLayer::~DataLayer()
+{
+	delete[] data.data;
+}
+
+int DataLayer::get(int x, int y, int z)
+{
+    int pos = (x << depthBitsPlusFour | z << depthBits | y);
+    int slot = pos >> 1;
+    int part = pos & 1;
+
+    if (part == 0)
+	{
+        return data[slot] & 0xf;
+    } else
+	{
+        return (data[slot] >> 4) & 0xf;
+    }
+}
+
+void DataLayer::set(int x, int y, int z, int val)
+{
+    int pos = (x << depthBitsPlusFour | z << depthBits | y);
+
+    int slot = pos >> 1;
+    int part = pos & 1;
+
+    if (part == 0)
+	{
+        data[slot] = (byte) ((data[slot] & 0xf0) | (val & 0xf));
+    } else
+	{
+        data[slot] = (byte) ((data[slot] & 0x0f) | ((val & 0xf) << 4));
+    }
+}
+
+bool DataLayer::isValid()
+{
+	return data.data != NULL;
+}
+
+void DataLayer::setAll(int br)
+{
+    byte val = (byte) (br & (br << 4));
+    for (unsigned int i = 0; i < data.length; i++)
+	{
+        data[i] = val;
+    }
+}