fix #3007, fix #3008

common/buildcraft/core/statements/TriggerEnergy.java

@@ -65,7 +65,7 @@ public class TriggerEnergy extends BCStatement implements ITriggerInternal {
 		}
 
 		if (energyMaxStored > 0) {
-			float level = energyStored / energyMaxStored;
+			float level = (float) energyStored / (float) energyMaxStored;
 			if (high) {
 				return level > 0.95F;
 			} else {

common/buildcraft/robotics/map/MapChunk.java

@@ -40,6 +40,10 @@ public class MapChunk {
 				int y = chunk.getHeightValue(bx, bz);
 				int color;
 
+				if (y < 0) {
+					y = 255;
+				}
+
 				while ((color = chunk.getBlock(bx, y, bz).getMapColor(0).colorIndex) == MapColor.airColor.colorIndex) {
 					y--;
 					if (y < 0) {

common/buildcraft/robotics/map/MapWorld.java

@@ -125,8 +125,11 @@ public class MapWorld {
 					if (v > 1) {
 						timeToUpdate.put(c, v - 1);
 					} else {
-						timeToUpdate.remove(c);
-						updateChunk(c);
+						try {
+							updateChunk(c);
+						} catch (Exception e) {
+							e.printStackTrace();
+						}
 					}
 				}
 			}