added block_state, deprecated block_properties and property

src/main/java/carpet/script/api/WorldAccess.java

@@ -958,6 +958,8 @@ public class WorldAccess {
                 stateStringQuery(c, "map_colour", lv, (s, p) ->
                         BlockInfo.mapColourName.get(s.getTopMaterialColor(((CarpetContext)c).s.getWorld(), p))));
 
+
+        // Deprecated for block_state()
         expression.addLazyFunction("property", -1, (c, t, lv) ->
         {
             BlockArgument locator = BlockArgument.findIn((CarpetContext) c, lv, 0);
@@ -973,6 +975,7 @@ public class WorldAccess {
             return (_c, _t) -> retval;
         });
 
+        // Deprecated for block_state()
         expression.addLazyFunction("block_properties", -1, (c, t, lv) ->
         {
             BlockArgument locator = BlockArgument.findIn((CarpetContext) c, lv, 0);
@@ -984,6 +987,31 @@ public class WorldAccess {
             return (_c, _t) -> res;
         });
 
+        // block_state(block)
+        // block_state(block, property)
+        expression.addLazyFunction("block_state", -1, (c, t, lv) ->
+        {
+            BlockArgument locator = BlockArgument.findIn((CarpetContext) c, lv, 0);
+            BlockState state = locator.block.getBlockState();
+            StateManager<Block, BlockState> states = state.getBlock().getStateManager();
+            if (locator.offset == lv.size())
+            {
+                Map<Value,Value> properties = new HashMap<>();
+                for(Property<?> p : states.getProperties())
+                {
+                    properties.put(StringValue.of(p.getName()), ValueConversions.fromProperty(state, p));// ValueConversions.fromObject(state.get(p), false));
+                }
+                Value ret = MapValue.wrap(properties);
+                return (_c, _t) -> ret;
+            }
+            String tag = lv.get(locator.offset).evalValue(c).getString();
+            Property<?> property = states.getProperty(tag);
+            if (property == null)
+                return LazyValue.NULL;
+            Value retval = ValueConversions.fromProperty(state, property);
+            return (_c, _t) -> retval;
+        });
+
         expression.addLazyFunction("biome", -1, (c, t, lv) -> {
             CarpetContext cc = (CarpetContext)c;
             BlockArgument locator = BlockArgument.findIn(cc, lv, 0);

src/main/java/carpet/script/value/ValueConversions.java

@@ -2,6 +2,7 @@ package carpet.script.value;
 
 import carpet.script.exception.InternalExpressionException;
 import carpet.utils.BlockInfo;
+import net.minecraft.block.BlockState;
 import net.minecraft.block.MaterialColor;
 import net.minecraft.entity.Entity;
 import net.minecraft.entity.ai.brain.LookTarget;
@@ -17,10 +18,12 @@ import net.minecraft.scoreboard.ScoreboardObjective;
 import net.minecraft.server.MinecraftServer;
 import net.minecraft.server.world.ServerWorld;
 
+import net.minecraft.state.property.Property;
 import net.minecraft.structure.StructurePiece;
 import net.minecraft.structure.StructureStart;
 import net.minecraft.util.Identifier;
 
+import net.minecraft.util.StringIdentifiable;
 import net.minecraft.util.dynamic.GlobalPos;
 import net.minecraft.util.math.BlockBox;
 import net.minecraft.util.math.BlockPos;
@@ -316,4 +319,15 @@ public class ValueConversions
         ret.put(new StringValue("pieces"), ListValue.wrap(pieces));
         return MapValue.wrap(ret);
     }
+
+    public static Value fromProperty(BlockState state, Property<?> p)
+    {
+        Comparable<?> object = state.get(p);
+        if (object instanceof Boolean || object instanceof Number) return StringValue.of(object.toString());
+        if (object instanceof StringIdentifiable)
+        {
+            return StringValue.of(((StringIdentifiable) object).asString());
+        }
+        throw new InternalExpressionException("Unknown property type: "+p.getName());
+    }
 }