# HG changeset patch
# User rubidium <rubidium@openttd.org>
# Date 1281552623 0
# Node ID 400e8473b89ee41abbeba96043725ff7bb1b6ce4
# Parent  e972d8a55e272181c2724fd0377c87d331dd2498
(svn r20448) -Codechange: make some functions that can be const const

diff --git a/src/newgrf_commons.cpp b/src/newgrf_commons.cpp
--- a/src/newgrf_commons.cpp
+++ b/src/newgrf_commons.cpp
@@ -92,7 +92,7 @@
  * @param grfid ID of the grf file
  * @return the ID of the candidate, of the Invalid flag item ID
  */
-uint16 OverrideManagerBase::GetID(uint8 grf_local_id, uint32 grfid)
+uint16 OverrideManagerBase::GetID(uint8 grf_local_id, uint32 grfid) const
 {
 	const EntityIDMapping *map;
 
@@ -146,7 +146,7 @@
  * @param entity_id of the entity being queried
  * @return mapped id
  */
-uint16 OverrideManagerBase::GetSubstituteID(uint16 entity_id)
+uint16 OverrideManagerBase::GetSubstituteID(uint16 entity_id) const
 {
 	return mapping_ID[entity_id].substitute_id;
 }
@@ -185,7 +185,7 @@
  * @param grfid ID of the grf file
  * @return the ID of the candidate, of the Invalid flag item ID
  */
-uint16 IndustryOverrideManager::GetID(uint8 grf_local_id, uint32 grfid)
+uint16 IndustryOverrideManager::GetID(uint8 grf_local_id, uint32 grfid) const
 {
 	uint16 id = OverrideManagerBase::GetID(grf_local_id, grfid);
 	if (id != invalid_ID) return id;
diff --git a/src/newgrf_commons.h b/src/newgrf_commons.h
--- a/src/newgrf_commons.h
+++ b/src/newgrf_commons.h
@@ -65,11 +65,11 @@
 	void Add(uint8 local_id, uint32 grfid, uint entity_type);
 	virtual uint16 AddEntityID(byte grf_local_id, uint32 grfid, byte substitute_id);
 
-	uint16 GetSubstituteID(uint16 entity_id);
-	virtual uint16 GetID(uint8 grf_local_id, uint32 grfid);
+	uint16 GetSubstituteID(uint16 entity_id) const;
+	virtual uint16 GetID(uint8 grf_local_id, uint32 grfid) const;
 
-	inline uint16 GetMaxMapping() { return max_new_entities; }
-	inline uint16 GetMaxOffset() { return max_offset; }
+	inline uint16 GetMaxMapping() const { return max_new_entities; }
+	inline uint16 GetMaxOffset() const { return max_offset; }
 };
 
 
@@ -89,7 +89,7 @@
 			OverrideManagerBase(offset, maximum, invalid) {}
 
 	virtual uint16 AddEntityID(byte grf_local_id, uint32 grfid, byte substitute_id);
-	virtual uint16 GetID(uint8 grf_local_id, uint32 grfid);
+	virtual uint16 GetID(uint8 grf_local_id, uint32 grfid) const;
 	void SetEntitySpec(IndustrySpec *inds);
 };