Cleanup isValidMetaTileEntity and some more (#245)

* Cleanup isValidMetaTileEntity

* Remove empty Javadoc tags

* Remove unused classes

6 files changed, 182 insertions, 1763 deletions

diff --git a/src/main/java/com/github/technus/tectech/thing/metaTileEntity/multi/GT_MetaTileEntity_EM_computer.java b/src/main/java/com/github/technus/tectech/thing/metaTileEntity/multi/GT_MetaTileEntity_EM_computer.java
index 46f325988a..37fa0837e3 100644
--- a/src/main/java/com/github/technus/tectech/thing/metaTileEntity/multi/GT_MetaTileEntity_EM_computer.java
+++ b/src/main/java/com/github/technus/tectech/thing/metaTileEntity/multi/GT_MetaTileEntity_EM_computer.java
@@ -14,6 +14,7 @@ import static com.gtnewhorizon.structurelib.structure.StructureUtility.transpose
 import static gregtech.api.enums.GT_HatchElement.Energy;
 import static gregtech.api.enums.GT_HatchElement.Maintenance;
 import static gregtech.api.util.GT_StructureUtility.buildHatchAdder;
+import static gregtech.api.util.GT_Utility.filterValidMTEs;
 import static net.minecraft.util.StatCollector.translateToLocal;
 
 import java.util.ArrayList;
@@ -55,7 +56,6 @@ import gregtech.api.interfaces.metatileentity.IMetaTileEntity;
 import gregtech.api.interfaces.tileentity.IGregTechTileEntity;
 import gregtech.api.metatileentity.MetaTileEntity;
 import gregtech.api.metatileentity.implementations.GT_MetaTileEntity_Hatch;
-import gregtech.api.metatileentity.implementations.GT_MetaTileEntity_MultiBlockBase;
 import gregtech.api.recipe.check.CheckRecipeResult;
 import gregtech.api.recipe.check.CheckRecipeResultRegistry;
 import gregtech.api.recipe.check.SimpleCheckRecipeResult;
@@ -164,10 +164,8 @@ public class GT_MetaTileEntity_EM_computer extends GT_MetaTileEntity_MultiblockB
 
     @Override
     public boolean checkMachine_EM(IGregTechTileEntity iGregTechTileEntity, ItemStack itemStack) {
-        for (GT_MetaTileEntity_Hatch_Rack rack : eRacks) {
-            if (GT_MetaTileEntity_MultiBlockBase.isValidMetaTileEntity(rack)) {
-                rack.getBaseMetaTileEntity().setActive(false);
-            }
+        for (GT_MetaTileEntity_Hatch_Rack rack : filterValidMTEs(eRacks)) {
+            rack.getBaseMetaTileEntity().setActive(false);
         }
         eRacks.clear();
         if (!structureCheck_EM("front", 1, 2, 0)) {
@@ -194,10 +192,8 @@ public class GT_MetaTileEntity_EM_computer extends GT_MetaTileEntity_MultiblockB
             return false;
         }
         eCertainMode = (byte) Math.min(totalLen / 3, 5);
-        for (GT_MetaTileEntity_Hatch_Rack rack : eRacks) {
-            if (GT_MetaTileEntity_MultiBlockBase.isValidMetaTileEntity(rack)) {
-                rack.getBaseMetaTileEntity().setActive(iGregTechTileEntity.isActive());
-            }
+        for (GT_MetaTileEntity_Hatch_Rack rack : filterValidMTEs(eRacks)) {
+            rack.getBaseMetaTileEntity().setActive(iGregTechTileEntity.isActive());
         }
         return eUncertainHatches.size() == 1;
     }
@@ -224,10 +220,7 @@ public class GT_MetaTileEntity_EM_computer extends GT_MetaTileEntity_MultiblockB
                 && !aBaseMetaTileEntity.isActive()
                 && aTick % 20 == MULTI_CHECK_AT) {
             double maxTemp = 0;
-            for (GT_MetaTileEntity_Hatch_Rack rack : eRacks) {
-                if (!GT_MetaTileEntity_MultiBlockBase.isValidMetaTileEntity(rack)) {
-                    continue;
-                }
+            for (GT_MetaTileEntity_Hatch_Rack rack : filterValidMTEs(eRacks)) {
                 if (rack.heat > maxTemp) {
                     maxTemp = rack.heat;
                 }
@@ -258,10 +251,7 @@ public class GT_MetaTileEntity_EM_computer extends GT_MetaTileEntity_MultiblockB
             short thingsActive = 0;
             int rackComputation;
 
-            for (GT_MetaTileEntity_Hatch_Rack rack : eRacks) {
-                if (!GT_MetaTileEntity_MultiBlockBase.isValidMetaTileEntity(rack)) {
-                    continue;
-                }
+            for (GT_MetaTileEntity_Hatch_Rack rack : filterValidMTEs(eRacks)) {
                 if (rack.heat > maxTemp) {
                     maxTemp = rack.heat;
                 }
@@ -409,10 +399,8 @@ public class GT_MetaTileEntity_EM_computer extends GT_MetaTileEntity_MultiblockB
     @Override
     public void onRemoval() {
         super.onRemoval();
-        for (GT_MetaTileEntity_Hatch_Rack rack : eRacks) {
-            if (GT_MetaTileEntity_MultiBlockBase.isValidMetaTileEntity(rack)) {
-                rack.getBaseMetaTileEntity().setActive(false);
-            }
+        for (GT_MetaTileEntity_Hatch_Rack rack : filterValidMTEs(eRacks)) {
+            rack.getBaseMetaTileEntity().setActive(false);
         }
     }
 
@@ -432,20 +420,16 @@ public class GT_MetaTileEntity_EM_computer extends GT_MetaTileEntity_MultiblockB
     public void stopMachine() {
         super.stopMachine();
         eAvailableData = 0;
-        for (GT_MetaTileEntity_Hatch_Rack rack : eRacks) {
-            if (GT_MetaTileEntity_MultiBlockBase.isValidMetaTileEntity(rack)) {
-                rack.getBaseMetaTileEntity().setActive(false);
-            }
+        for (GT_MetaTileEntity_Hatch_Rack rack : filterValidMTEs(eRacks)) {
+            rack.getBaseMetaTileEntity().setActive(false);
         }
     }
 
     @Override
     protected void afterRecipeCheckFailed() {
         super.afterRecipeCheckFailed();
-        for (GT_MetaTileEntity_Hatch_Rack rack : eRacks) {
-            if (GT_MetaTileEntity_MultiBlockBase.isValidMetaTileEntity(rack)) {
-                rack.getBaseMetaTileEntity().setActive(false);
-            }
+        for (GT_MetaTileEntity_Hatch_Rack rack : filterValidMTEs(eRacks)) {
+            rack.getBaseMetaTileEntity().setActive(false);
         }
     }
 
diff --git a/src/main/java/com/github/technus/tectech/thing/metaTileEntity/multi/GT_MetaTileEntity_EM_research.java b/src/main/java/com/github/technus/tectech/thing/metaTileEntity/multi/GT_MetaTileEntity_EM_research.java
index a1fcf44208..b6e5c16292 100644
--- a/src/main/java/com/github/technus/tectech/thing/metaTileEntity/multi/GT_MetaTileEntity_EM_research.java
+++ b/src/main/java/com/github/technus/tectech/thing/metaTileEntity/multi/GT_MetaTileEntity_EM_research.java
@@ -11,6 +11,7 @@ import static com.gtnewhorizon.structurelib.structure.StructureUtility.transpose
 import static gregtech.api.enums.GT_HatchElement.Energy;
 import static gregtech.api.enums.GT_HatchElement.Maintenance;
 import static gregtech.api.util.GT_StructureUtility.buildHatchAdder;
+import static gregtech.api.util.GT_Utility.filterValidMTEs;
 import static mcp.mobius.waila.api.SpecialChars.GREEN;
 import static mcp.mobius.waila.api.SpecialChars.RED;
 import static mcp.mobius.waila.api.SpecialChars.RESET;
@@ -56,7 +57,6 @@ import gregtech.api.interfaces.tileentity.IGregTechTileEntity;
 import gregtech.api.metatileentity.MetaTileEntity;
 import gregtech.api.metatileentity.implementations.GT_MetaTileEntity_Hatch;
 import gregtech.api.metatileentity.implementations.GT_MetaTileEntity_Hatch_Energy;
-import gregtech.api.metatileentity.implementations.GT_MetaTileEntity_MultiBlockBase;
 import gregtech.api.recipe.check.CheckRecipeResult;
 import gregtech.api.recipe.check.CheckRecipeResultRegistry;
 import gregtech.api.recipe.check.SimpleCheckRecipeResult;
@@ -330,10 +330,8 @@ public class GT_MetaTileEntity_EM_research extends GT_MetaTileEntity_MultiblockB
 
     @Override
     public boolean checkMachine_EM(IGregTechTileEntity iGregTechTileEntity, ItemStack itemStack) {
-        for (GT_MetaTileEntity_Hatch_Holder rack : eHolders) {
-            if (GT_MetaTileEntity_MultiBlockBase.isValidMetaTileEntity(rack)) {
-                rack.getBaseMetaTileEntity().setActive(false);
-            }
+        for (GT_MetaTileEntity_Hatch_Holder rack : filterValidMTEs(eHolders)) {
+            rack.getBaseMetaTileEntity().setActive(false);
         }
         eHolders.clear();
 
@@ -341,10 +339,8 @@ public class GT_MetaTileEntity_EM_research extends GT_MetaTileEntity_MultiblockB
             return false;
         }
 
-        for (GT_MetaTileEntity_Hatch_Holder rack : eHolders) {
-            if (GT_MetaTileEntity_MultiBlockBase.isValidMetaTileEntity(rack)) {
-                rack.getBaseMetaTileEntity().setActive(iGregTechTileEntity.isActive());
-            }
+        for (GT_MetaTileEntity_Hatch_Holder rack : filterValidMTEs(eHolders)) {
+            rack.getBaseMetaTileEntity().setActive(iGregTechTileEntity.isActive());
         }
         return eHolders.size() == 1;
     }
@@ -487,17 +483,13 @@ public class GT_MetaTileEntity_EM_research extends GT_MetaTileEntity_MultiblockB
     public String[] getInfoData() {
         long storedEnergy = 0;
         long maxEnergy = 0;
-        for (GT_MetaTileEntity_Hatch_Energy tHatch : mEnergyHatches) {
-            if (GT_MetaTileEntity_MultiBlockBase.isValidMetaTileEntity(tHatch)) {
-                storedEnergy += tHatch.getBaseMetaTileEntity().getStoredEU();
-                maxEnergy += tHatch.getBaseMetaTileEntity().getEUCapacity();
-            }
+        for (GT_MetaTileEntity_Hatch_Energy tHatch : filterValidMTEs(mEnergyHatches)) {
+            storedEnergy += tHatch.getBaseMetaTileEntity().getStoredEU();
+            maxEnergy += tHatch.getBaseMetaTileEntity().getEUCapacity();
         }
-        for (GT_MetaTileEntity_Hatch_EnergyMulti tHatch : eEnergyMulti) {
-            if (GT_MetaTileEntity_MultiBlockBase.isValidMetaTileEntity(tHatch)) {
-                storedEnergy += tHatch.getBaseMetaTileEntity().getStoredEU();
-                maxEnergy += tHatch.getBaseMetaTileEntity().getEUCapacity();
-            }
+        for (GT_MetaTileEntity_Hatch_EnergyMulti tHatch : filterValidMTEs(eEnergyMulti)) {
+            storedEnergy += tHatch.getBaseMetaTileEntity().getStoredEU();
+            maxEnergy += tHatch.getBaseMetaTileEntity().getEUCapacity();
         }
 
         return new String[] { translateToLocalFormatted("tt.keyphrase.Energy_Hatches", clientLocale) + ":",
diff --git a/src/main/java/com/github/technus/tectech/thing/metaTileEntity/multi/GT_MetaTileEntity_TM_teslaCoil.java b/src/main/java/com/github/technus/tectech/thing/metaTileEntity/multi/GT_MetaTileEntity_TM_teslaCoil.java
index 193a958c5d..4ed3520b8a 100644
--- a/src/main/java/com/github/technus/tectech/thing/metaTileEntity/multi/GT_MetaTileEntity_TM_teslaCoil.java
+++ b/src/main/java/com/github/technus/tectech/thing/metaTileEntity/multi/GT_MetaTileEntity_TM_teslaCoil.java
@@ -17,6 +17,7 @@ import static com.gtnewhorizon.structurelib.structure.StructureUtility.ofBlocksT
 import static com.gtnewhorizon.structurelib.structure.StructureUtility.transpose;
 import static gregtech.api.enums.GT_HatchElement.*;
 import static gregtech.api.util.GT_StructureUtility.buildHatchAdder;
+import static gregtech.api.util.GT_Utility.filterValidMTEs;
 import static java.lang.Math.min;
 import static net.minecraft.util.StatCollector.translateToLocal;
 
@@ -90,7 +91,6 @@ import gregtech.api.metatileentity.implementations.GT_MetaTileEntity_Hatch_Energ
 import gregtech.api.metatileentity.implementations.GT_MetaTileEntity_Hatch_Input;
 import gregtech.api.metatileentity.implementations.GT_MetaTileEntity_Hatch_Maintenance;
 import gregtech.api.metatileentity.implementations.GT_MetaTileEntity_Hatch_Output;
-import gregtech.api.metatileentity.implementations.GT_MetaTileEntity_MultiBlockBase;
 import gregtech.api.recipe.check.CheckRecipeResult;
 import gregtech.api.recipe.check.SimpleCheckRecipeResult;
 import gregtech.api.util.GT_Multiblock_Tooltip_Builder;
@@ -540,20 +540,16 @@ public class GT_MetaTileEntity_TM_teslaCoil extends GT_MetaTileEntity_Multiblock
 
     @Override
     public boolean checkMachine_EM(IGregTechTileEntity iGregTechTileEntity, ItemStack itemStack) {
-        for (GT_MetaTileEntity_Hatch_Capacitor cap : eCapacitorHatches) {
-            if (isValidMetaTileEntity(cap)) {
-                cap.getBaseMetaTileEntity().setActive(false);
-            }
+        for (GT_MetaTileEntity_Hatch_Capacitor cap : filterValidMTEs(eCapacitorHatches)) {
+            cap.getBaseMetaTileEntity().setActive(false);
         }
         eCapacitorHatches.clear();
 
         mTier = -1;
 
         if (structureCheck_EM("main", 3, 16, 0)) {
-            for (GT_MetaTileEntity_Hatch_Capacitor cap : eCapacitorHatches) {
-                if (isValidMetaTileEntity(cap)) {
-                    cap.getBaseMetaTileEntity().setActive(iGregTechTileEntity.isActive());
-                }
+            for (GT_MetaTileEntity_Hatch_Capacitor cap : filterValidMTEs(eCapacitorHatches)) {
+                cap.getBaseMetaTileEntity().setActive(iGregTechTileEntity.isActive());
             }
 
             // Only recalculate offsets on orientation or rotation change
@@ -600,10 +596,7 @@ public class GT_MetaTileEntity_TM_teslaCoil extends GT_MetaTileEntity_Multiblock
         mMaxProgresstime = 20;
         vTier = -1;
         long[] capacitorData;
-        for (GT_MetaTileEntity_Hatch_Capacitor cap : eCapacitorHatches) {
-            if (!GT_MetaTileEntity_MultiBlockBase.isValidMetaTileEntity(cap)) {
-                continue;
-            }
+        for (GT_MetaTileEntity_Hatch_Capacitor cap : filterValidMTEs(eCapacitorHatches)) {
             if (cap.getCapacitors()[0] > vTier) {
                 vTier = (int) cap.getCapacitors()[0];
             }
@@ -621,10 +614,7 @@ public class GT_MetaTileEntity_TM_teslaCoil extends GT_MetaTileEntity_Multiblock
         }
 
         outputVoltageMax = V[vTier + 1];
-        for (GT_MetaTileEntity_Hatch_Capacitor cap : eCapacitorHatches) {
-            if (!GT_MetaTileEntity_MultiBlockBase.isValidMetaTileEntity(cap)) {
-                continue;
-            }
+        for (GT_MetaTileEntity_Hatch_Capacitor cap : filterValidMTEs(eCapacitorHatches)) {
             cap.getBaseMetaTileEntity().setActive(true);
             capacitorData = cap.getCapacitors();
             if (capacitorData[0] < vTier) {
@@ -701,10 +691,8 @@ public class GT_MetaTileEntity_TM_teslaCoil extends GT_MetaTileEntity_Multiblock
         super.onRemoval();
         if (!getBaseMetaTileEntity().isClientSide()) {
             teslaSimpleNodeSetRemove(this);
-            for (GT_MetaTileEntity_Hatch_Capacitor cap : eCapacitorHatches) {
-                if (GT_MetaTileEntity_MultiBlockBase.isValidMetaTileEntity(cap)) {
-                    cap.getBaseMetaTileEntity().setActive(false);
-                }
+            for (GT_MetaTileEntity_Hatch_Capacitor cap : filterValidMTEs(eCapacitorHatches)) {
+                cap.getBaseMetaTileEntity().setActive(false);
             }
         }
     }
diff --git a/src/main/java/com/github/technus/tectech/thing/metaTileEntity/multi/base/GT_MetaTileEntity_MultiblockBase_EM.java b/src/main/java/com/github/technus/tectech/thing/metaTileEntity/multi/base/GT_MetaTileEntity_MultiblockBase_EM.java
index 1daee413e6..534b0d6d1a 100644
--- a/src/main/java/com/github/technus/tectech/thing/metaTileEntity/multi/base/GT_MetaTileEntity_MultiblockBase_EM.java
+++ b/src/main/java/com/github/technus/tectech/thing/metaTileEntity/multi/base/GT_MetaTileEntity_MultiblockBase_EM.java
@@ -7,6 +7,7 @@ import static com.github.technus.tectech.util.CommonValues.*;
 import static com.github.technus.tectech.util.TT_Utility.getTier;
 import static gregtech.api.enums.GT_HatchElement.*;
 import static gregtech.api.metatileentity.BaseTileEntity.TOOLTIP_DELAY;
+import static gregtech.api.util.GT_Utility.filterValidMTEs;
 import static java.lang.Math.min;
 
 import java.util.ArrayList;
@@ -315,11 +316,6 @@ public abstract class GT_MetaTileEntity_MultiblockBase_EM
 
     // region tooltip and scanner result
 
-    /**
-     * @param hatchNo
-     * @param paramID
-     * @return
-     */
     public ArrayList<String> getFullLedDescriptionIn(int hatchNo, int paramID) {
         ArrayList<String> list = new ArrayList<>();
         list.add(
@@ -347,11 +343,6 @@ public abstract class GT_MetaTileEntity_MultiblockBase_EM
         return list;
     }
 
-    /**
-     * @param hatchNo
-     * @param paramID
-     * @return
-     */
     public ArrayList<String> getFullLedDescriptionOut(int hatchNo, int paramID) {
         ArrayList<String> list = new ArrayList<>();
         list.add(
@@ -388,24 +379,18 @@ public abstract class GT_MetaTileEntity_MultiblockBase_EM
 
     /**
      * scanner gives it
-     *
-     * @return
      */
     @Override
     public String[] getInfoData() { // TODO Do it
         long storedEnergy = 0;
         long maxEnergy = 0;
-        for (GT_MetaTileEntity_Hatch_Energy tHatch : mEnergyHatches) {
-            if (GT_MetaTileEntity_MultiBlockBase.isValidMetaTileEntity(tHatch)) {
-                storedEnergy += tHatch.getBaseMetaTileEntity().getStoredEU();
-                maxEnergy += tHatch.getBaseMetaTileEntity().getEUCapacity();
-            }
+        for (GT_MetaTileEntity_Hatch_Energy tHatch : filterValidMTEs(mEnergyHatches)) {
+            storedEnergy += tHatch.getBaseMetaTileEntity().getStoredEU();
+            maxEnergy += tHatch.getBaseMetaTileEntity().getEUCapacity();
         }
-        for (GT_MetaTileEntity_Hatch_EnergyMulti tHatch : eEnergyMulti) {
-            if (GT_MetaTileEntity_MultiBlockBase.isValidMetaTileEntity(tHatch)) {
-                storedEnergy += tHatch.getBaseMetaTileEntity().getStoredEU();
-                maxEnergy += tHatch.getBaseMetaTileEntity().getEUCapacity();
-            }
+        for (GT_MetaTileEntity_Hatch_EnergyMulti tHatch : filterValidMTEs(eEnergyMulti)) {
+            storedEnergy += tHatch.getBaseMetaTileEntity().getStoredEU();
+            maxEnergy += tHatch.getBaseMetaTileEntity().getEUCapacity();
         }
 
         return new String[] { "Progress:",
@@ -469,8 +454,6 @@ public abstract class GT_MetaTileEntity_MultiblockBase_EM
 
     /**
      * should it work with scanner? HELL YES
-     *
-     * @return
      */
     @Override
     public boolean isGivingInformation() {
@@ -483,8 +466,6 @@ public abstract class GT_MetaTileEntity_MultiblockBase_EM
 
     /**
      * add more textures
-     *
-     * @param aBlockIconRegister
      */
     @Override
     @SideOnly(Side.CLIENT)
@@ -496,14 +477,6 @@ public abstract class GT_MetaTileEntity_MultiblockBase_EM
 
     /**
      * actually use textures
-     *
-     * @param aBaseMetaTileEntity
-     * @param side
-     * @param facing
-     * @param colorIndex
-     * @param aActive
-     * @param aRedstone
-     * @return
      */
     @Override
     public ITexture[] getTexture(IGregTechTileEntity aBaseMetaTileEntity, ForgeDirection side, ForgeDirection facing,
@@ -517,8 +490,6 @@ public abstract class GT_MetaTileEntity_MultiblockBase_EM
 
     /**
      * should return your activity sound
-     *
-     * @return
      */
     @SideOnly(Side.CLIENT)
     protected ResourceLocation getActivitySound() {
@@ -527,8 +498,6 @@ public abstract class GT_MetaTileEntity_MultiblockBase_EM
 
     /**
      * plays the sounds auto magically
-     *
-     * @param activitySound
      */
     @SideOnly(Side.CLIENT)
     protected void soundMagic(ResourceLocation activitySound) {
@@ -550,9 +519,6 @@ public abstract class GT_MetaTileEntity_MultiblockBase_EM
 
     /**
      * is the thing inside controller a valid item to make the machine work
-     *
-     * @param itemStack
-     * @return
      */
     @Override
     public boolean isCorrectMachinePart(ItemStack itemStack) {
@@ -561,9 +527,6 @@ public abstract class GT_MetaTileEntity_MultiblockBase_EM
 
     /**
      * how much damage to apply to thing in controller - not sure how it does it
-     *
-     * @param itemStack
-     * @return
      */
     @Override
     public int getDamageToComponent(ItemStack itemStack) {
@@ -589,11 +552,9 @@ public abstract class GT_MetaTileEntity_MultiblockBase_EM
 
     /**
      * prevents spontaneous explosions when the chunks unloading would cause them should cover 3 chunks radius
-     *
-     * @return
      */
     protected boolean areChunksAroundLoaded_EM() {
-        if (GT_MetaTileEntity_MultiBlockBase.isValidMetaTileEntity(this) && getBaseMetaTileEntity().isServerSide()) {
+        if (this.isValid() && getBaseMetaTileEntity().isServerSide()) {
             IGregTechTileEntity base = getBaseMetaTileEntity();
             return base.getWorld().doChunksNearChunkExist(base.getXCoord(), base.getYCoord(), base.getZCoord(), 3);
             // todo check if it is actually checking if chunks are loaded
@@ -736,8 +697,6 @@ public abstract class GT_MetaTileEntity_MultiblockBase_EM
 
     /**
      * store data
-     *
-     * @param aNBT
      */
     @Override
     public void saveNBTData(NBTTagCompound aNBT) {
@@ -814,8 +773,6 @@ public abstract class GT_MetaTileEntity_MultiblockBase_EM
 
     /**
      * load data
-     *
-     * @param aNBT
      */
     @Override
     public void loadNBTData(NBTTagCompound aNBT) {
@@ -942,8 +899,6 @@ public abstract class GT_MetaTileEntity_MultiblockBase_EM
 
     /**
      * cyclic check even when not working, called LESS frequently
-     *
-     * @return
      */
     private boolean cyclicUpdate() {
         if (cyclicUpdate_EM()) {
@@ -955,8 +910,6 @@ public abstract class GT_MetaTileEntity_MultiblockBase_EM
 
     /**
      * mining level...
-     *
-     * @return
      */
     @Override
     public byte getTileEntityBaseType() {
@@ -969,10 +922,6 @@ public abstract class GT_MetaTileEntity_MultiblockBase_EM
 
     /**
      * internal check machine
-     *
-     * @param iGregTechTileEntity
-     * @param itemStack
-     * @return
      */
     @Override
     public final boolean checkMachine(IGregTechTileEntity iGregTechTileEntity, ItemStack itemStack) {
@@ -981,9 +930,6 @@ public abstract class GT_MetaTileEntity_MultiblockBase_EM
 
     /**
      * internal check recipe
-     *
-     * @param itemStack
-     * @return
      */
     @Override
     public final boolean checkRecipe(ItemStack itemStack) { // do recipe checks, based on "machine content and state"
@@ -1013,8 +959,8 @@ public abstract class GT_MetaTileEntity_MultiblockBase_EM
         }
         boolean busy = mMaxProgresstime > 0;
         if (busy) { // write from buffer to hatches only
-            for (GT_MetaTileEntity_Hatch_Param hatch : eParamHatches) {
-                if (!GT_MetaTileEntity_MultiBlockBase.isValidMetaTileEntity(hatch) || hatch.param < 0) {
+            for (GT_MetaTileEntity_Hatch_Param hatch : filterValidMTEs(eParamHatches)) {
+                if (hatch.param < 0) {
                     continue;
                 }
                 int hatchId = hatch.param;
@@ -1026,8 +972,8 @@ public abstract class GT_MetaTileEntity_MultiblockBase_EM
                 hatch.input1D = parametrization.iParamsOut[hatchId + 10];
             }
         } else { // if has nothing to do update all
-            for (GT_MetaTileEntity_Hatch_Param hatch : eParamHatches) {
-                if (!GT_MetaTileEntity_MultiBlockBase.isValidMetaTileEntity(hatch) || hatch.param < 0) {
+            for (GT_MetaTileEntity_Hatch_Param hatch : filterValidMTEs(eParamHatches)) {
+                if (hatch.param < 0) {
                     continue;
                 }
                 int hatchId = hatch.param;
@@ -1065,9 +1011,6 @@ public abstract class GT_MetaTileEntity_MultiblockBase_EM
 
     /**
      * called every tick the machines is active
-     *
-     * @param aStack
-     * @return
      */
     @Override
     public boolean onRunningTick(ItemStack aStack) {
@@ -1274,38 +1217,36 @@ public abstract class GT_MetaTileEntity_MultiblockBase_EM
             mSolderingTool = true;
             mCrowbar = true;
         } else {
-            for (GT_MetaTileEntity_Hatch_Maintenance tHatch : mMaintenanceHatches) {
-                if (GT_MetaTileEntity_MultiBlockBase.isValidMetaTileEntity(tHatch)) {
-                    if (tHatch.mAuto
-                            && !(mWrench && mScrewdriver && mSoftHammer && mHardHammer && mSolderingTool && mCrowbar)) {
-                        tHatch.autoMaintainance();
-                    }
-                    if (tHatch.mWrench) {
-                        mWrench = true;
-                    }
-                    if (tHatch.mScrewdriver) {
-                        mScrewdriver = true;
-                    }
-                    if (tHatch.mSoftHammer) {
-                        mSoftHammer = true;
-                    }
-                    if (tHatch.mHardHammer) {
-                        mHardHammer = true;
-                    }
-                    if (tHatch.mSolderingTool) {
-                        mSolderingTool = true;
-                    }
-                    if (tHatch.mCrowbar) {
-                        mCrowbar = true;
-                    }
-
-                    tHatch.mWrench = false;
-                    tHatch.mScrewdriver = false;
-                    tHatch.mSoftHammer = false;
-                    tHatch.mHardHammer = false;
-                    tHatch.mSolderingTool = false;
-                    tHatch.mCrowbar = false;
+            for (GT_MetaTileEntity_Hatch_Maintenance tHatch : filterValidMTEs(mMaintenanceHatches)) {
+                if (tHatch.mAuto
+                        && !(mWrench && mScrewdriver && mSoftHammer && mHardHammer && mSolderingTool && mCrowbar)) {
+                    tHatch.autoMaintainance();
+                }
+                if (tHatch.mWrench) {
+                    mWrench = true;
+                }
+                if (tHatch.mScrewdriver) {
+                    mScrewdriver = true;
                 }
+                if (tHatch.mSoftHammer) {
+                    mSoftHammer = true;
+                }
+                if (tHatch.mHardHammer) {
+                    mHardHammer = true;
+                }
+                if (tHatch.mSolderingTool) {
+                    mSolderingTool = true;
+                }
+                if (tHatch.mCrowbar) {
+                    mCrowbar = true;
+                }
+
+                tHatch.mWrench = false;
+                tHatch.mScrewdriver = false;
+                tHatch.mSoftHammer = false;
+                tHatch.mHardHammer = false;
+                tHatch.mSolderingTool = false;
+                tHatch.mCrowbar = false;
             }
         }
     }
@@ -1321,26 +1262,18 @@ public abstract class GT_MetaTileEntity_MultiblockBase_EM
         mMufflerHatches.clear();
         mMaintenanceHatches.clear();
 
-        for (GT_MetaTileEntity_Hatch_DataConnector<?> hatch_data : eOutputData) {
-            if (GT_MetaTileEntity_MultiBlockBase.isValidMetaTileEntity(hatch_data)) {
-                hatch_data.id = -1;
-            }
+        for (GT_MetaTileEntity_Hatch_DataConnector<?> hatch_data : filterValidMTEs(eOutputData)) {
+            hatch_data.id = -1;
         }
-        for (GT_MetaTileEntity_Hatch_DataConnector<?> hatch_data : eInputData) {
-            if (GT_MetaTileEntity_MultiBlockBase.isValidMetaTileEntity(hatch_data)) {
-                hatch_data.id = -1;
-            }
+        for (GT_MetaTileEntity_Hatch_DataConnector<?> hatch_data : filterValidMTEs(eInputData)) {
+            hatch_data.id = -1;
         }
 
-        for (GT_MetaTileEntity_Hatch_Uncertainty hatch : eUncertainHatches) {
-            if (GT_MetaTileEntity_MultiBlockBase.isValidMetaTileEntity(hatch)) {
-                hatch.getBaseMetaTileEntity().setActive(false);
-            }
+        for (GT_MetaTileEntity_Hatch_Uncertainty hatch : filterValidMTEs(eUncertainHatches)) {
+            hatch.getBaseMetaTileEntity().setActive(false);
         }
-        for (GT_MetaTileEntity_Hatch_Param hatch : eParamHatches) {
-            if (GT_MetaTileEntity_MultiBlockBase.isValidMetaTileEntity(hatch)) {
-                hatch.getBaseMetaTileEntity().setActive(false);
-            }
+        for (GT_MetaTileEntity_Hatch_Param hatch : filterValidMTEs(eParamHatches)) {
+            hatch.getBaseMetaTileEntity().setActive(false);
         }
 
         eUncertainHatches.clear();
@@ -1354,27 +1287,19 @@ public abstract class GT_MetaTileEntity_MultiblockBase_EM
     protected void setupHatches_EM() {
         short id = 1;
 
-        for (GT_MetaTileEntity_Hatch_DataConnector<?> hatch_data : eOutputData) {
-            if (GT_MetaTileEntity_MultiBlockBase.isValidMetaTileEntity(hatch_data)) {
-                hatch_data.id = id++;
-            }
+        for (GT_MetaTileEntity_Hatch_DataConnector<?> hatch_data : filterValidMTEs(eOutputData)) {
+            hatch_data.id = id++;
         }
         id = 1;
-        for (GT_MetaTileEntity_Hatch_DataConnector<?> hatch_data : eInputData) {
-            if (GT_MetaTileEntity_MultiBlockBase.isValidMetaTileEntity(hatch_data)) {
-                hatch_data.id = id++;
-            }
+        for (GT_MetaTileEntity_Hatch_DataConnector<?> hatch_data : filterValidMTEs(eInputData)) {
+            hatch_data.id = id++;
         }
 
-        for (GT_MetaTileEntity_Hatch_Uncertainty hatch : eUncertainHatches) {
-            if (GT_MetaTileEntity_MultiBlockBase.isValidMetaTileEntity(hatch)) {
-                hatch.getBaseMetaTileEntity().setActive(true);
-            }
+        for (GT_MetaTileEntity_Hatch_Uncertainty hatch : filterValidMTEs(eUncertainHatches)) {
+            hatch.getBaseMetaTileEntity().setActive(true);
         }
-        for (GT_MetaTileEntity_Hatch_Param hatch : eParamHatches) {
-            if (GT_MetaTileEntity_MultiBlockBase.isValidMetaTileEntity(hatch)) {
-                hatch.getBaseMetaTileEntity().setActive(true);
-            }
+        for (GT_MetaTileEntity_Hatch_Param hatch : filterValidMTEs(eParamHatches)) {
+            hatch.getBaseMetaTileEntity().setActive(true);
         }
     }
 
@@ -1386,68 +1311,52 @@ public abstract class GT_MetaTileEntity_MultiblockBase_EM
             maxEUinputMax = V[0];
             maxEUoutputMin = V[15];
             maxEUoutputMax = V[0];
-            for (GT_MetaTileEntity_Hatch_Energy hatch : mEnergyHatches) {
-                if (GT_MetaTileEntity_MultiBlockBase.isValidMetaTileEntity(hatch)) {
-                    if (hatch.maxEUInput() < maxEUinputMin) {
-                        maxEUinputMin = hatch.maxEUInput();
-                    }
-                    if (hatch.maxEUInput() > maxEUinputMax) {
-                        maxEUinputMax = hatch.maxEUInput();
-                    }
+            for (GT_MetaTileEntity_Hatch_Energy hatch : filterValidMTEs(mEnergyHatches)) {
+                if (hatch.maxEUInput() < maxEUinputMin) {
+                    maxEUinputMin = hatch.maxEUInput();
+                }
+                if (hatch.maxEUInput() > maxEUinputMax) {
+                    maxEUinputMax = hatch.maxEUInput();
                 }
             }
-            for (GT_MetaTileEntity_Hatch_EnergyMulti hatch : eEnergyMulti) {
-                if (GT_MetaTileEntity_MultiBlockBase.isValidMetaTileEntity(hatch)) {
-                    if (hatch.maxEUInput() < maxEUinputMin) {
-                        maxEUinputMin = hatch.maxEUInput();
-                    }
-                    if (hatch.maxEUInput() > maxEUinputMax) {
-                        maxEUinputMax = hatch.maxEUInput();
-                    }
+            for (GT_MetaTileEntity_Hatch_EnergyMulti hatch : filterValidMTEs(eEnergyMulti)) {
+                if (hatch.maxEUInput() < maxEUinputMin) {
+                    maxEUinputMin = hatch.maxEUInput();
+                }
+                if (hatch.maxEUInput() > maxEUinputMax) {
+                    maxEUinputMax = hatch.maxEUInput();
                 }
             }
-            for (GT_MetaTileEntity_Hatch_Dynamo hatch : mDynamoHatches) {
-                if (GT_MetaTileEntity_MultiBlockBase.isValidMetaTileEntity(hatch)) {
-                    if (hatch.maxEUOutput() < maxEUoutputMin) {
-                        maxEUoutputMin = hatch.maxEUOutput();
-                    }
-                    if (hatch.maxEUOutput() > maxEUoutputMax) {
-                        maxEUoutputMax = hatch.maxEUOutput();
-                    }
+            for (GT_MetaTileEntity_Hatch_Dynamo hatch : filterValidMTEs(mDynamoHatches)) {
+                if (hatch.maxEUOutput() < maxEUoutputMin) {
+                    maxEUoutputMin = hatch.maxEUOutput();
+                }
+                if (hatch.maxEUOutput() > maxEUoutputMax) {
+                    maxEUoutputMax = hatch.maxEUOutput();
                 }
             }
-            for (GT_MetaTileEntity_Hatch_DynamoMulti hatch : eDynamoMulti) {
-                if (GT_MetaTileEntity_MultiBlockBase.isValidMetaTileEntity(hatch)) {
-                    if (hatch.maxEUOutput() < maxEUoutputMin) {
-                        maxEUoutputMin = hatch.maxEUOutput();
-                    }
-                    if (hatch.maxEUOutput() > maxEUoutputMax) {
-                        maxEUoutputMax = hatch.maxEUOutput();
-                    }
+            for (GT_MetaTileEntity_Hatch_DynamoMulti hatch : filterValidMTEs(eDynamoMulti)) {
+                if (hatch.maxEUOutput() < maxEUoutputMin) {
+                    maxEUoutputMin = hatch.maxEUOutput();
+                }
+                if (hatch.maxEUOutput() > maxEUoutputMax) {
+                    maxEUoutputMax = hatch.maxEUOutput();
                 }
             }
             eMaxAmpereFlow = 0;
             eMaxAmpereGen = 0;
             // counts only full amps
-            for (GT_MetaTileEntity_Hatch_Energy hatch : mEnergyHatches) {
-                if (GT_MetaTileEntity_MultiBlockBase.isValidMetaTileEntity(hatch)) {
-                    eMaxAmpereFlow += hatch.maxEUInput() / maxEUinputMin;
-                }
+            for (GT_MetaTileEntity_Hatch_Energy hatch : filterValidMTEs(mEnergyHatches)) {
+                eMaxAmpereFlow += hatch.maxEUInput() / maxEUinputMin;
             }
-            for (GT_MetaTileEntity_Hatch_EnergyMulti hatch : eEnergyMulti) {
-                if (GT_MetaTileEntity_MultiBlockBase.isValidMetaTileEntity(hatch)) {
-                    eMaxAmpereFlow += hatch.maxEUInput() / maxEUinputMin * hatch.Amperes;
-                }
+            for (GT_MetaTileEntity_Hatch_EnergyMulti hatch : filterValidMTEs(eEnergyMulti)) {
+                eMaxAmpereFlow += hatch.maxEUInput() / maxEUinputMin * hatch.Amperes;
             }
-            for (GT_MetaTileEntity_Hatch_Dynamo hatch : mDynamoHatches) {
-                if (GT_MetaTileEntity_MultiBlockBase.isValidMetaTileEntity(hatch)) {
-                    eMaxAmpereGen += hatch.maxEUOutput() / maxEUoutputMin;
-                }
+            for (GT_MetaTileEntity_Hatch_Dynamo hatch : filterValidMTEs(mDynamoHatches)) {
+                eMaxAmpereGen += hatch.maxEUOutput() / maxEUoutputMin;
             }
-            for (GT_MetaTileEntity_Hatch_DynamoMulti hatch : eDynamoMulti) {
-                if (GT_MetaTileEntity_MultiBlockBase.isValidMetaTileEntity(hatch)) {
-                    eMaxAmpereGen += hatch.maxEUOutput() / maxEUoutputMin * hatch.Amperes;
-                }
+            for (GT_MetaTileEntity_Hatch_DynamoMulti hatch : filterValidMTEs(eDynamoMulti)) {
+                eMaxAmpereGen += hatch.maxEUOutput() / maxEUoutputMin * hatch.Amperes;
             }
         } else {
             maxEUinputMin = 0;
@@ -1467,44 +1376,36 @@ public abstract class GT_MetaTileEntity_MultiblockBase_EM
 
     protected final void powerPass(IGregTechTileEntity aBaseMetaTileEntity) {
         long euVar;
-        for (GT_MetaTileEntity_Hatch_Dynamo tHatch : mDynamoHatches) {
-            if (GT_MetaTileEntity_MultiBlockBase.isValidMetaTileEntity(tHatch)) {
-                euVar = tHatch.maxEUOutput() * tHatch.maxAmperesOut();
-                if (tHatch.getBaseMetaTileEntity().getStoredEU() <= tHatch.maxEUStore() - euVar && aBaseMetaTileEntity
-                        .decreaseStoredEnergyUnits(euVar + Math.max(euVar / 24576, tHatch.maxAmperesOut()), false)) {
-                    tHatch.setEUVar(tHatch.getBaseMetaTileEntity().getStoredEU() + euVar);
-                }
+        for (GT_MetaTileEntity_Hatch_Dynamo tHatch : filterValidMTEs(mDynamoHatches)) {
+            euVar = tHatch.maxEUOutput() * tHatch.maxAmperesOut();
+            if (tHatch.getBaseMetaTileEntity().getStoredEU() <= tHatch.maxEUStore() - euVar && aBaseMetaTileEntity
+                    .decreaseStoredEnergyUnits(euVar + Math.max(euVar / 24576, tHatch.maxAmperesOut()), false)) {
+                tHatch.setEUVar(tHatch.getBaseMetaTileEntity().getStoredEU() + euVar);
             }
         }
-        for (GT_MetaTileEntity_Hatch_DynamoMulti tHatch : eDynamoMulti) {
-            if (GT_MetaTileEntity_MultiBlockBase.isValidMetaTileEntity(tHatch)) {
-                euVar = tHatch.maxEUOutput() * tHatch.maxAmperesOut();
-                if (tHatch.getBaseMetaTileEntity().getStoredEU() <= tHatch.maxEUStore() - euVar && aBaseMetaTileEntity
-                        .decreaseStoredEnergyUnits(euVar + Math.max(euVar / 24576, tHatch.maxAmperesOut()), false)) {
-                    tHatch.setEUVar(tHatch.getBaseMetaTileEntity().getStoredEU() + euVar);
-                }
+        for (GT_MetaTileEntity_Hatch_DynamoMulti tHatch : filterValidMTEs(eDynamoMulti)) {
+            euVar = tHatch.maxEUOutput() * tHatch.maxAmperesOut();
+