1 files changed, 65 insertions, 0 deletions
diff --git a/Minecraft.Client/OffsettedRenderList.cpp b/Minecraft.Client/OffsettedRenderList.cpp
new file mode 100644
index 00000000..729d26f9
--- /dev/null
+++ b/Minecraft.Client/OffsettedRenderList.cpp
@@ -0,0 +1,65 @@
+#include "stdafx.h"
+#include "..\Minecraft.World\IntBuffer.h"
+#include "OffsettedRenderList.h"
+
+// 4J added
+OffsettedRenderList::OffsettedRenderList()
+{
+	x = y = z = 0;
+	xOff = yOff = zOff = 0;
+	lists = MemoryTracker::createIntBuffer(1024 * 64);
+	inited = false;
+	rendered = false;
+}
+
+void OffsettedRenderList::init(int x, int y, int z, double xOff, double yOff, double zOff)
+{
+    inited = true;
+    lists->clear();
+    this->x = x;
+    this->y = y;
+    this->z = z;
+
+    this->xOff = (float) xOff;
+    this->yOff = (float) yOff;
+    this->zOff = (float) zOff;
+}
+
+bool OffsettedRenderList::isAt(int x, int y, int z)
+{
+    if (!inited) return false;
+    return x == this->x && y == this->y && z == this->z;
+}
+
+void OffsettedRenderList::add(int list)
+{
+	// 4J - added - chunkList::getList returns -1 when chunks aren't visible, we really don't want to end up sending that to glCallLists
+	if( list >= 0 )
+	{
+	    lists->put(list);
+	}
+    if (lists->remaining() == 0) render();
+}
+
+void OffsettedRenderList::render()
+{
+    if (!inited) return;
+    if (!rendered)
+	{
+        lists->flip();
+        rendered = true;
+    }
+    if (lists->remaining() > 0)
+	{
+        glPushMatrix();
+        glTranslatef(x - xOff, y - yOff, z - zOff);
+        glCallLists(lists);
+        glPopMatrix();
+    }
+}
+
+void OffsettedRenderList::clear()
+{
+    inited = false;
+    rendered = false;
+}
+\ No newline at end of file