Slight change to ampoc logic (#2590)

* better safeguard for negative oc count.

* add new unit test

2 files changed, 17 insertions, 5 deletions

diff --git a/src/main/java/gregtech/api/util/GT_OverclockCalculator.java b/src/main/java/gregtech/api/util/GT_OverclockCalculator.java
index a551e34ff9..609a196e80 100644
--- a/src/main/java/gregtech/api/util/GT_OverclockCalculator.java
+++ b/src/main/java/gregtech/api/util/GT_OverclockCalculator.java
@@ -428,11 +428,11 @@ public class GT_OverclockCalculator {
         if (!amperageOC) {
             overclockCount = Math.min(overclockCount, calculateRecipeToMachineVoltageDifference());
         }
-        if (overclockCount < 0) {
-            recipeVoltage = Long.MAX_VALUE;
-            duration = Integer.MAX_VALUE;
-            return;
-        }
+
+        // Not just a safeguard. This also means that you can run a 1.2A recipe on a single hatch for a regular gt
+        // multi.
+        // This is intended, including the fact that you don't get an OC with a one tier upgrade in that case.
+        overclockCount = Math.max(overclockCount, 0);
 
         overclockCount = limitOverclocks ? Math.min(maxOverclocks, overclockCount) : overclockCount;
         heatOverclockCount = Math.min(heatOverclockCount, overclockCount);
diff --git a/src/test/java/gregtech/overclock/GT_OverclockCalculator_UnitTest.java b/src/test/java/gregtech/overclock/GT_OverclockCalculator_UnitTest.java
index ba6769d3d6..e1560b27cb 100644
--- a/src/test/java/gregtech/overclock/GT_OverclockCalculator_UnitTest.java
+++ b/src/test/java/gregtech/overclock/GT_OverclockCalculator_UnitTest.java
@@ -583,4 +583,16 @@ class GT_OverclockCalculator_UnitTest {
         assertEquals(expectedDuration, calculator.getDuration(), messageDuration);
         assertEquals(VP[6], calculator.getConsumption(), messageEUt);
     }
+
+    @Test
+    void slightlyOverOneAmpRecipeWorksWithSingleEnergyHatch() {
+        GT_OverclockCalculator calculator = new GT_OverclockCalculator().setRecipeEUt(614400)
+            .setEUt(TierEU.UV)
+            .setDuration(600)
+            .setAmperage(2)
+            .setAmperageOC(false)
+            .calculate();
+        assertEquals(600, calculator.getDuration(), messageDuration);
+        assertEquals(614400, calculator.getConsumption(), messageEUt);
+    }
 }