// Once ProcessNextModule has found an executable module
public void ExecuteModule(Module previous, KeyValuePair <GameObject, Sentence> moduleSentancePair, ParameterBundle bundle, char symbol, bool baked)
{
if (previous == null)
{
return; // if object is destroyed externally
}
Profiler.BeginSample("LSystem.Module.ExecuteModule");
if (moduleSentancePair.Key == null)
{
return;
}
ParameterBundle newBundle = new ParameterBundle(bundle);
newBundle.SetOrPut("Sentence", moduleSentancePair.Value);
GameObject moduleInstance = UnityEngine.Object.Instantiate(moduleSentancePair.Key);
Module module = moduleInstance.GetComponent <Module>();
module.previous = previous;
moduleInstance.transform.SetParent(previous.transform, true);
module.symbol = symbol;
//Seeds are baked separately so their baked value must not be overwritten.
//Is there a way to avoid this special case in module?
if (module.GetType() != typeof(Seed))
{
module.baked = baked;
}
Profiler.EndSample();
if (prefabIdentifier != null)
{
module.prefabIdentifier = prefabIdentifier;
}
if (baked)
{
module.Bake(newBundle);
}
else
{
module.Execute(newBundle);
}
}
IEnumerator Grow(ParameterBundle bundle)
{
//Get parameters
Quaternion rotation;
Sentence sentence;
CharGameObjectDict implementations;
int generation;
RuleSet rules;
// Check valid state for growing
if (!GetCoreParameters(bundle, out sentence, out implementations, out rules) ||
!GetPositionParameters(bundle, out generation, out rotation))
{
yield break;
}
// Setup Renderer
if ((filter = gameObject.GetComponent <MeshFilter>()) == null)
{
filter = gameObject.AddComponent <MeshFilter>();
}
if ((branchRenderer = gameObject.GetComponent <MeshRenderer>()) == null)
{
branchRenderer = gameObject.AddComponent <MeshRenderer>();
}
branchRenderer.material = branchMaterial;
// Match start position to previous position. As growth progresses position will be offset
// While rotation stays the same
transform.position = previous.transform.position;
transform.rotation = rotation;
// Try and pick up length and radius where last branch left off.
float length, radius, growSpeed;
if (bundle.Get("BranchLength", out length))
{
startLength = length;
}
if (bundle.Get("BranchRadius", out radius))
{
startRadius = radius;
}
if (bundle.Get("BranchGrowSpeed", out growSpeed))
{
startGrowSpeed = growSpeed;
}
if (bundle.Get("BranchFaceNum", out faces))
{
startFaceNum = faces;
}
GrowLoopCallback growLoopCallback;
bundle.Get("GrowLoopCallback", out growLoopCallback);
radius = startRadius;
length = startLength;
growSpeed = startGrowSpeed;
faces = startFaceNum;
// Since we don't want to continue drawing where it doesn't matter!
// Note that future emergence is killed here.
if (length < lengthCutoff || radius < radiusCutoff)
{
yield break;
}
if (endObject != null)
{
endObject = (GameObject)Instantiate(endObject, transform);
Module mod = endObject.GetComponent <Module>();
if (mod != null)
{
AssignPrevious(mod, this);
if (mod.GetType() != typeof(Seed))
{
Kill(mod);
mod.Execute(bundle);
}
}
endObject.transform.rotation = rotation;
}
// Update mesh and extend transform towards final position
float distance = Vector3.Distance(transform.position, previous.transform.position);
while (distance < length)
{
float completionRatio = distance / length;
transform.position += transform.up * Mathf.Min(/*heading.magnitude * */ Time.deltaTime * Mathf.Lerp(startGrowSpeed,
growSpeed * growSpeedChangeCoefficient, completionRatio), length);
distance = Vector3.Distance(transform.position, previous.transform.position);
bottomRadius = Mathf.Lerp(0, startRadius, completionRatio);
UpdateBranch(Vector3.up * -distance, distance, bottomRadius * bottomRadiusMultiplier,
topRadius * topRadiusMultiplier, Mathf.Max(2, (int)(faces)));
if (growLoopCallback != null)
{
growLoopCallback(bottomRadius);
}
if (endObject != null)
{
endObject.transform.position = transform.position;
endObject.transform.rotation = rotation;
}
yield return(null);
}
bottomRadius = startRadius;
// Update parameters for next branch
bundle.SetOrPut("BranchLength", length * lengthChangeCoefficient);
bundle.SetOrPut("BranchRadius", radius * radiusChangeCoefficient);
bundle.SetOrPut("BranchGrowSpeed", growSpeed * growSpeedChangeCoefficient);
bundle.SetOrPut("BranchFaceNum", faces * faceNumChangeCoefficient);
// For coordination between branches
growLoopCallback = NextBranchGrowLoopCallback;
bundle.SetOrPut("GrowLoopCallback", growLoopCallback);
if (setStaticOnComplete)
{
gameObject.isStatic = true;
}
EnqueueProcessNextModule(transform, sentence, implementations, rules, bundle);
}