Add constants for tier indexes (#2578)

* Add constants for tier indexes.

Just following up on: https://github.com/GTNewHorizons/KubaTech/pull/122#discussion_r1568228992

* spotless apply

2 files changed, 52 insertions, 30 deletions

diff --git a/src/main/java/gregtech/api/enums/GTVoltageIndex.java b/src/main/java/gregtech/api/enums/GTVoltageIndex.java
new file mode 100644
index 0000000000..c5c2c215b0
--- /dev/null
+++ b/src/main/java/gregtech/api/enums/GTVoltageIndex.java
@@ -0,0 +1,22 @@
+package gregtech.api.enums;
+
+public class GTVoltageIndex {
+
+    public final static int ULV = 0;
+    public final static int LV = 1;
+    public final static int MV = 2;
+    public final static int HV = 3;
+    public final static int EV = 4;
+    public final static int IV = 5;
+    public final static int LuV = 6;
+    public final static int ZPM = 7;
+    public final static int UV = 8;
+    public final static int UHV = 9;
+    public final static int UEV = 10;
+    public final static int UIV = 11;
+    public final static int UMV = 12;
+    public final static int UXV = 13;
+    public final static int MAX = 14;
+
+    private GTVoltageIndex() {}
+}
diff --git a/src/main/java/gregtech/api/enums/TierEU.java b/src/main/java/gregtech/api/enums/TierEU.java
index 7325d2a789..26b6393115 100644
--- a/src/main/java/gregtech/api/enums/TierEU.java
+++ b/src/main/java/gregtech/api/enums/TierEU.java
@@ -5,36 +5,36 @@ import static gregtech.api.enums.GT_Values.V;
 public class TierEU {
 
     // Do NOT use these for crafting recipes as they are exactly 1A! Use RECIPE_ULV etc.
-    public static final long ULV = V[0];
-    public static final long LV = V[1];
-    public static final long MV = V[2];
-    public static final long HV = V[3];
-    public static final long EV = V[4];
-    public static final long IV = V[5];
-    public static final long LuV = V[6];
-    public static final long ZPM = V[7];
-    public static final long UV = V[8];
-    public static final long UHV = V[9];
-    public static final long UEV = V[10];
-    public static final long UIV = V[11];
-    public static final long UMV = V[12];
-    public static final long UXV = V[13];
-    public static final long MAX = V[14];
+    public static final long ULV = V[GTVoltageIndex.ULV];
+    public static final long LV = V[GTVoltageIndex.LV];
+    public static final long MV = V[GTVoltageIndex.MV];
+    public static final long HV = V[GTVoltageIndex.HV];
+    public static final long EV = V[GTVoltageIndex.EV];
+    public static final long IV = V[GTVoltageIndex.IV];
+    public static final long LuV = V[GTVoltageIndex.LuV];
+    public static final long ZPM = V[GTVoltageIndex.ZPM];
+    public static final long UV = V[GTVoltageIndex.UV];
+    public static final long UHV = V[GTVoltageIndex.UHV];
+    public static final long UEV = V[GTVoltageIndex.UEV];
+    public static final long UIV = V[GTVoltageIndex.UIV];
+    public static final long UMV = V[GTVoltageIndex.UMV];
+    public static final long UXV = V[GTVoltageIndex.UXV];
+    public static final long MAX = V[GTVoltageIndex.MAX];
 
     // Use me for recipes.
-    public static final long RECIPE_ULV = GT_Values.VP[0];
-    public static final long RECIPE_LV = GT_Values.VP[1];
-    public static final long RECIPE_MV = GT_Values.VP[2];
-    public static final long RECIPE_HV = GT_Values.VP[3];
-    public static final long RECIPE_EV = GT_Values.VP[4];
-    public static final long RECIPE_IV = GT_Values.VP[5];
-    public static final long RECIPE_LuV = GT_Values.VP[6];
-    public static final long RECIPE_ZPM = GT_Values.VP[7];
-    public static final long RECIPE_UV = GT_Values.VP[8];
-    public static final long RECIPE_UHV = GT_Values.VP[9];
-    public static final long RECIPE_UEV = GT_Values.VP[10];
-    public static final long RECIPE_UIV = GT_Values.VP[11];
-    public static final long RECIPE_UMV = GT_Values.VP[12];
-    public static final long RECIPE_UXV = GT_Values.VP[13];
-    public static final long RECIPE_MAX = GT_Values.VP[14];
+    public static final long RECIPE_ULV = GT_Values.VP[GTVoltageIndex.ULV];
+    public static final long RECIPE_LV = GT_Values.VP[GTVoltageIndex.LV];
+    public static final long RECIPE_MV = GT_Values.VP[GTVoltageIndex.MV];
+    public static final long RECIPE_HV = GT_Values.VP[GTVoltageIndex.HV];
+    public static final long RECIPE_EV = GT_Values.VP[GTVoltageIndex.EV];
+    public static final long RECIPE_IV = GT_Values.VP[GTVoltageIndex.IV];
+    public static final long RECIPE_LuV = GT_Values.VP[GTVoltageIndex.LuV];
+    public static final long RECIPE_ZPM = GT_Values.VP[GTVoltageIndex.ZPM];
+    public static final long RECIPE_UV = GT_Values.VP[GTVoltageIndex.UV];
+    public static final long RECIPE_UHV = GT_Values.VP[GTVoltageIndex.UHV];
+    public static final long RECIPE_UEV = GT_Values.VP[GTVoltageIndex.UEV];
+    public static final long RECIPE_UIV = GT_Values.VP[GTVoltageIndex.UIV];
+    public static final long RECIPE_UMV = GT_Values.VP[GTVoltageIndex.UMV];
+    public static final long RECIPE_UXV = GT_Values.VP[GTVoltageIndex.UXV];
+    public static final long RECIPE_MAX = GT_Values.VP[GTVoltageIndex.MAX];
 }