private void DiffuseAcrossEdge(
DiffusionEdge edge,
NativeList <float> sourceAmounts,
NativeList <float> targetAmounts
)
{
var nodeA = nodes[edge.nodeAIndex];
var nodeB = nodes[edge.nodeBIndex];
var diffusionConstant = customSymbols.diffusionConstantRuntimeGlobalMultiplier * (nodeA.diffusionConstant + nodeB.diffusionConstant) / 2f;
for (
int resource = 0;
resource < nodeA.totalResourceTypes && resource < nodeB.totalResourceTypes;
resource++)
{
var oldNodeAValue = sourceAmounts[nodeA.indexInTempAmountList + resource];
var nodeAValueCap = nodeMaxCapacities[nodeA.indexInTempAmountList + resource];
var oldNodeBValue = sourceAmounts[nodeB.indexInTempAmountList + resource];
var nodeBValueCap = nodeMaxCapacities[nodeB.indexInTempAmountList + resource];
var aToBTransferredAmount = diffusionConstant * (oldNodeBValue - oldNodeAValue);
if (aToBTransferredAmount == 0)
{
continue;
}
if (aToBTransferredAmount < 0 && oldNodeBValue >= nodeBValueCap)
{
// the direction of flow is towards node B, and also node B is above its value cap. skip updating the resource on this connection completely.
continue;
}
if (aToBTransferredAmount > 0 && oldNodeAValue >= nodeAValueCap)
{
// the direction of flow is towards node A, and also node A is above its value cap. skip updating the resource on this connection completely.
continue;
}
targetAmounts[nodeA.indexInTempAmountList + resource] += aToBTransferredAmount;
targetAmounts[nodeB.indexInTempAmountList + resource] -= aToBTransferredAmount;
}
}
private void ExtractEdgesAndNodes()
{
var branchSymbolParentStack = new TmpNativeStack <BranchEvent>(5);
var currentNodeParent = -1;
for (int symbolIndex = 0; symbolIndex < inPlaceSymbols.Length; symbolIndex++)
{
var symbol = inPlaceSymbols[symbolIndex];
if (symbol == customSymbols.diffusionNode)
{
if (currentNodeParent >= 0)
{
var newEdge = new DiffusionEdge
{
nodeAIndex = currentNodeParent,
nodeBIndex = working.nodes.Length
};
working.allEdges.Add(newEdge);
}
currentNodeParent = working.nodes.Length;
var nodeParams = inPlaceSymbols.parameters[symbolIndex];
var newNode = new DiffusionNode
{
indexInTarget = symbolIndex,
targetParameters = nodeParams,
indexInTempAmountList = working.nodeAmountsListA.Length,
totalResourceTypes = (nodeParams.length - 1) / 2,
diffusionConstant = inPlaceSymbols.parameters[nodeParams, 0],
};
newNode.targetParameters.length = nodeParams.length;
working.nodes.Add(newNode);
for (int resourceType = 0; resourceType < newNode.totalResourceTypes; resourceType++)
{
var currentAmount = inPlaceSymbols.parameters[nodeParams, resourceType * 2 + 1];
var maxCapacity = inPlaceSymbols.parameters[nodeParams, resourceType * 2 + 1 + 1];
working.nodeAmountsListA.Add(currentAmount);
working.nodeAmountsListB.Add(0);
working.nodeMaxCapacities.Add(maxCapacity);
}
}
else if (symbol == customSymbols.diffusionAmount)
{
var modifiedNode = working.nodes[currentNodeParent];
var amountParameters = inPlaceSymbols.parameters[symbolIndex];
inPlaceSymbols.parameters[symbolIndex] = new JaggedIndexing
{
index = amountParameters.index,
length = 0
};
if (currentNodeParent < 0)
{
// problem: the amount will dissapear
continue;
}
for (int resourceType = 0; resourceType < modifiedNode.totalResourceTypes && resourceType < amountParameters.length; resourceType++)
{
working.nodeAmountsListA[modifiedNode.indexInTempAmountList + resourceType] += inPlaceSymbols.parameters[amountParameters, resourceType];
}
}
else if (symbol == customSymbols.branchOpenSymbol)
{
branchSymbolParentStack.Push(new BranchEvent
{
openBranchSymbolIndex = symbolIndex,
currentNodeParent = currentNodeParent
});
}
else if (symbol == customSymbols.branchCloseSymbol)
{
if (branchSymbolParentStack.Count <= 0)
{
// uh oh. idk how this is happening but it is. probably related to the volumetric destruction and autophagy.
break;
}
var lastBranchState = branchSymbolParentStack.Pop();
currentNodeParent = lastBranchState.currentNodeParent;
}
}
}
private void ExtractEdgesAndNodes()
{
var branchSymbolParentStack = new TmpNativeStack <BranchEvent>(5);
var currentNodeParent = -1;
for (int symbolIndex = 0; symbolIndex < sourceData.Length; symbolIndex++)
{
var symbol = sourceData[symbolIndex];
if (symbol == customSymbols.diffusionNode)
{
if (currentNodeParent >= 0)
{
var newEdge = new DiffusionEdge
{
nodeAIndex = currentNodeParent,
nodeBIndex = working.nodes.Length
};
working.allEdges.Add(newEdge);
}
currentNodeParent = working.nodes.Length;
var nodeParams = sourceData.parameters[symbolIndex];
var nodeSingleton = matchSingletonData[symbolIndex];
var newNode = new DiffusionNode
{
indexInTarget = nodeSingleton.replacementSymbolIndexing.index,
targetParameters = nodeSingleton.replacementParameterIndexing,
indexInTempAmountList = working.nodeAmountsListA.Length,
totalResourceTypes = (nodeParams.length - 1) / 2,
diffusionConstant = sourceData.parameters[nodeParams, 0],
};
newNode.targetParameters.length = nodeParams.length;
working.nodes.Add(newNode);
for (int resourceType = 0; resourceType < newNode.totalResourceTypes; resourceType++)
{
var currentAmount = sourceData.parameters[nodeParams, resourceType * 2 + 1];
var maxCapacity = sourceData.parameters[nodeParams, resourceType * 2 + 1 + 1];
working.nodeAmountsListA.Add(currentAmount);
working.nodeAmountsListB.Add(0);
working.nodeMaxCapacities.Add(maxCapacity);
}
}
else if (symbol == customSymbols.diffusionAmount)
{
var modifiedNode = working.nodes[currentNodeParent];
var amountParameters = sourceData.parameters[symbolIndex];
if (amountParameters.length == 0)
{
// the amount has no parameters left. removal will be happening via regular update
continue;
}
// clear out the parameters in the target string, and write the symbol over
var nodeSingleton = matchSingletonData[symbolIndex];
targetData.parameters[nodeSingleton.replacementSymbolIndexing.index] = new JaggedIndexing
{
index = nodeSingleton.replacementParameterIndexing.index,
length = 0
};
targetData[nodeSingleton.replacementSymbolIndexing.index] = customSymbols.diffusionAmount;
if (currentNodeParent < 0)
{
// problem: the amount will dissapear
continue;
}
for (int resourceType = 0; resourceType < modifiedNode.totalResourceTypes && resourceType < amountParameters.length; resourceType++)
{
working.nodeAmountsListA[modifiedNode.indexInTempAmountList + resourceType] += sourceData.parameters[amountParameters, resourceType];
}
}
else if (symbol == customSymbols.branchOpenSymbol)
{
branchSymbolParentStack.Push(new BranchEvent
{
openBranchSymbolIndex = symbolIndex,
currentNodeParent = currentNodeParent
});
}
else if (symbol == customSymbols.branchCloseSymbol)
{
var lastBranchState = branchSymbolParentStack.Pop();
currentNodeParent = lastBranchState.currentNodeParent;
}
}
}