Fix most cases of Processing Arrays randomly jamming (#178)

src/main/java/gregicadditions/machines/TileEntityProcessingArray.java

@@ -402,6 +402,9 @@ public void invalidate() {
  this.machineTier = 0;
  this.numberOfMachines = 0;
  this.numberOfOperations = 0;
+ this.lastItemInputsMatrix = null;
+ this.lastItemInputs = null;
+ this.lastFluidInputs = null;
  }
 
  //Finds the Recipe Map of the passed Machine Stack and checks if it is a valid Recipe Map
@@ -476,6 +479,11 @@ public void findMachineStack() {
  //The Processing Array is limited to 1 Machine Interface per multiblock, and only has 1 slot
  ItemStack currentMachine = controller.getAbilities(GACapabilities.PA_MACHINE_CONTAINER).get(0).getStackInSlot(0);
 
+ if (currentMachine.isEmpty()) {
+ invalidate();
+ return;
+ }
+
  if (!ItemStack.areItemStacksEqual(this.machineItemStack, currentMachine)) {
  RecipeMap<?> rmap = findRecipeMapAndCheckValid(currentMachine);
 
@@ -646,8 +654,10 @@ private void trySearchNewRecipeDistinct() {
  multipliedRecipe = multiplyRecipe(importInventory.get(lastRecipeIndex), importFluids, currentRecipe, machineItemStack, recipeMap);
  if(setupAndConsumeRecipeInputs(multipliedRecipe, lastRecipeIndex)) {
  setupRecipe(multipliedRecipe);
- return;
  }
+ //if the recipe matches return true we HAVE enough of the input to proceed, but are not proceeding due to either lack of energy or output space.
+ //return earlier to avoid refreshing the input cache too early and missing the inventory change when this recipe is actually invalid.
+ return;
  }
 
  //If the previous recipe is null, check for a new recipe
@@ -668,9 +678,13 @@ private void trySearchNewRecipeDistinct() {
  multipliedRecipe = multiplyRecipe(bus, importFluids, currentRecipe, machineItemStack, recipeMap);
  }
 
- if(multipliedRecipe != null && setupAndConsumeRecipeInputs(multipliedRecipe, i)) {
+ if(multipliedRecipe != null) {
+ if(setupAndConsumeRecipeInputs(multipliedRecipe, i)) {
+ setupRecipe(multipliedRecipe);
+ }
+ //if the recipe matches return true we HAVE enough of the input to proceed, but are not proceeding due to either lack of energy or output space.
+ //return earlier to avoid refreshing the input cache too early and missing the inventory change when this recipe is actually invalid.
  lastRecipeIndex = i;
- setupRecipe(multipliedRecipe);
  break;
  }
  }