Make codegen stuff a bit more developer friendly

Author: dktapps

tools/generate-entity-ids.php

@@ -28,6 +28,7 @@
 
 if(count($argv) !== 2){
 	fwrite(STDERR, "Required arguments: path to entity ID mapping file\n");
+	fwrite(STDERR, "Hint: Input file is a JSON file like entity_id_map.json in pmmp/BedrockData\n");
 	exit(1);
 }
 
@@ -67,10 +68,8 @@
 namespace pocketmine\network\mcpe\protocol\types\entity;
 
 /**
- * This file is directly generated from the entity definitions provided by the client. The entities listed in this file
- * are expected to always have the same IDs.
- *
  * This file is automatically generated; do NOT edit it by hand.
+ * Regenerate it by running tools/generate-entity-ids.php
  */
 final class EntityIds{
 

tools/generate-level-sound-ids.php

@@ -29,6 +29,7 @@
 
 if(count($argv) !== 2){
 	fwrite(STDERR, "Required arguments: path to level sound event ID mapping file\n");
+	fwrite(STDERR, "Hint: Input file is a JSON file like level_sound_id_map.json in pmmp/BedrockData\n");
 	exit(1);
 }
 
@@ -152,9 +153,8 @@
 namespace pocketmine\network\mcpe\protocol\types;
 
 /**
- * This file is generated from level_sound_id_map.json in BedrockData.
- *
  * This file is automatically generated; do NOT edit it by hand.
+ * Regenerate it by running tools/generate-level-sound-ids.php
  */
 final class LevelSoundEvent{
 	private function __construct(){