/// <summary>
/// Sets up for a single area world.
/// </summary>
private void ClearWorld()
{
_portalAreaCount = 1;
_areaScreenRect = new idScreenRect[] { new idScreenRect() };
_portalAreas = new PortalArea[] { new PortalArea() };
SetupAreaReferences();
// even though we only have a single area, create a node
// that has both children pointing at it so we don't need to
AreaNode areaNode = new AreaNode();
areaNode.Plane.D = 1;
areaNode.Children[0] = -1;
areaNode.Children[1] = -1;
_areaNodes = new AreaNode[1];
_areaNodes[0] = areaNode;
}
private int CommonChildrenArea(AreaNode node)
{
int[] nums = new int[2];
int count = nums.Length;
for(int i = 0; i < count; i++)
{
if(node.Children[i] <= 0)
{
nums[i] = -1 - node.Children[i];
}
else
{
nums[i] = CommonChildrenArea(_areaNodes[node.Children[i]]);
}
}
// solid nodes will match any area
if(nums[0] == idRenderWorld.AreaSolid)
{
nums[0] = nums[1];
}
if(nums[1] == idRenderWorld.AreaSolid)
{
nums[1] = nums[0];
}
int common;
if(nums[0] == nums[1])
{
common = nums[0];
}
else
{
common = idRenderWorld.ChildrenHaveMultipleAreas;
}
return (node.CommonChildrenArea = common);
}
private void ParseNodes(idLexer lexer)
{
lexer.ExpectTokenString("{");
_areaNodeCount = lexer.ParseInt();
if(_areaNodeCount < 0)
{
lexer.Error("ParseNodes: bad areaNodeCount");
}
_areaNodes = new AreaNode[_areaNodeCount];
float[] tmp;
AreaNode node;
for(int i = 0; i < _areaNodeCount; i++)
{
node = _areaNodes[i] = new AreaNode();
tmp = lexer.Parse1DMatrix(4);
node.Plane = new Plane(tmp[0], tmp[1], tmp[2], tmp[3]);
node.Children[0] = lexer.ParseInt();
node.Children[1] = lexer.ParseInt();
}
lexer.ExpectTokenString("}");
}
