fix incorrect block state string parsing

Author: LukynkaCZE

src/main/kotlin/io/github/dockyardmc/world/block/Block.kt

@@ -120,8 +120,14 @@ data class Block(
 
         fun getBlockFromStateString(identifier: String): Block {
             val blockIdentifier = identifier.split("[")[0]
-            val block = BlockRegistry[blockIdentifier]
-            val id = block.possibleStates[identifier] ?: throw IllegalArgumentException("No matching state sequence found on ${block.identifier}")
+            val registryBlock = BlockRegistry[blockIdentifier]
+
+            //if no block state ids, no need to look up the block state ids map
+            if (registryBlock.states.isEmpty()) {
+                return registryBlock.toBlock()
+            }
+
+            val id = registryBlock.possibleStates[identifier] ?: throw IllegalArgumentException("No matching state sequence found on ${registryBlock.identifier}")
             return getBlockByStateId(id)
         }
 

src/test/kotlin/io/github/dockyard/tests/block/BlockTest.kt

@@ -103,6 +103,14 @@ class BlockTest {
 
     @Test
     fun testBlockStateParsing() {
+        val matches = mutableMapOf<String, Int>(
+            "minecraft:coarse_dirt" to 11
+        )
+
+        matches.forEach { (identifier, blockStateId) ->
+            assertEquals(blockStateId, Block.getBlockFromStateString(identifier).getProtocolId())
+        }
+
         val parsed = Block.parseBlockStateString("minecraft:oak_slab[type=top]")
 
         assertEquals("minecraft:oak_slab", parsed.first)