RuneI
Class TreeGrow

Core.Object
   |
   +--Engine.Actor
      |
      +--Engine.ParticleSystem
         |
         +--RuneI.BeamSystem
            |
            +--RuneI.TreePt
               |
               +--RuneI.TreeGrow

// A point spawns a new bud

00001	//=============================================================================
00002	// TreeGrow.
00003	//=============================================================================
00004	class TreeGrow extends TreePt;
00005	
00006	
00007	var() bool bPreGrow;				// Grow to full size before gameplay starts
00008	var() float GrowthRate;				// Units per second of branch growth
00009	var() float BlossomRate;			// Drawscale units per second of blossom growth
00010	var() float MatureBranchLength;		// Max length for branches before sprouting
00011	var() int ComplexityOrder;			// max branches from a parent [1..5]
00012	var() int Fertility;				// inherited fertility, when this reaches 0, tree dies
00013	var int Generation;
00014	
00015	//--------------------------------------------------------
00016	// Functions
00017	//--------------------------------------------------------
00018	
00019	
00020	// A point spawns a new bud
00021	function Sprout()
00022	{
00023		local TreeGrow child;
00024		local int i,numbranches,PortionOfFertility;
00025	
00026		if (Fertility <= 0)
00027			return;
00028	
00029		if (Generation < 2)
00030			numbranches = 1;
00031		else
00032			numbranches = int(RandRange(2, ComplexityOrder));
00033	
00034		PortionOfFertility = Fertility / numbranches;
00035		for (i=0; i<numbranches; i++)
00036		{
00037			child = Spawn(class'TreeGrow',,,Location);
00038			child.Parent = self;
00039			child.GravDir = Normal(VRand()+vect(0,0,1));
00040			child.BranchLength = 1;
00041			child.Target = self;
00042			child.bPreGrow = bPreGrow;
00043			child.Generation = Generation + 1;
00044			if (Generation > 1)
00045			{	// Not root
00046				child.bAffectsParent=True;
00047			}
00048			child.Fertility = PortionOfFertility;
00049	
00050			if (child.bPreGrow)
00051				child.GotoState('PreGrowing');
00052			else
00053				child.GotoState('Growing');
00054			DrawType=DT_ParticleSystem;		// Whither from blossum to normal branch
00055			bLeaf = false;
00056		}
00057	}
00058	
00059	
00060	
00061	//--------------------------------------------------------
00062	// States
00063	//--------------------------------------------------------
00064	
00065	// These used to grow trees (move to subclass)
00066	auto State Seed
00067	{
00068		ignores Tick;
00069	
00070		function BeginState()
00071		{
00072			if (bPreGrow)
00073				GotoState('PreGrowing');
00074		}
00075	
00076		function Trigger(actor Other, Pawn EventInstigator)
00077		{
00078			GotoState('Growing');
00079		}
00080	
00081	Begin:
00082	}
00083	
00084	
00085	State Growing
00086	{
00087		function Tick(float DeltaTime)
00088		{
00089			local TreePt point;
00090	
00091			if (DrawScale < 1.0)
00092			{	// Grow blossoms
00093				DrawScale += BlossomRate*DeltaTime;
00094			}
00095	
00096			if (BranchLength < MatureBranchLength)
00097			{	// Grow branches
00098				BranchLength += GrowthRate*DeltaTime;
00099			}
00100			else
00101			{
00102				Sprout();
00103				GotoState('Active');
00104			}
00105	
00106			if (bLeaf)
00107			{
00108				point = self;
00109				while (point != None)
00110				{
00111					ApplySwing(point.Parent, point, DeltaTime);
00112					point = point.Parent;
00113				}
00114			}
00115		}
00116		
00117		function BeginState()
00118		{
00119			if (Parent==None)
00120			{	// Root
00121				DrawType = DT_None;
00122				DrawScale = 1.0;
00123				BranchLength = MatureBranchLength;
00124				Sprout();
00125				GotoState('Active');
00126			}
00127			else
00128			{
00129				SetPhysics(PHYS_PROJECTILE);
00130			}
00131		}
00132	
00133		function EndState()
00134		{
00135		}
00136	
00137	Begin:
00138	
00139	}
00140	
00141	
00142	State PreGrowing
00143	{
00144		ignores Tick;
00145	
00146	Begin:
00147		DrawScale = 1.0;
00148		BranchLength = MatureBranchLength;
00149		Sprout();
00150		Velocity=vect(0,0,1);	// Disallow going inactive immediately
00151		GotoState('Active');
00152	}
00153	
00154	defaultproperties
00155	{
00156	     GrowthRate=50.000000
00157	     BlossomRate=0.500000
00158	     MatureBranchLength=40.000000
00159	     ComplexityOrder=2
00160	     Fertility=5
00161	     bAffectsParent=False
00162	     BranchLength=1.000000
00163	     ParticleCount=6
00164	     ParticleTexture(0)=Texture'RuneFX.bark2'
00165	     NumConPts=2
00166	     BeamThickness=2.000000
00167	     Physics=PHYS_None
00168	     DrawType=DT_SkeletalMesh
00169	     DrawScale=0.100000
00170	     Skeletal=SkelModel'objects.Leaf'
00171	}