diff --git a/doomsday/Include/r_model.h b/doomsday/Include/r_model.h
index de52af8c95..f8931d004e 100644
--- a/doomsday/Include/r_model.h
+++ b/doomsday/Include/r_model.h
@@ -53,6 +53,7 @@ typedef struct
 typedef struct modeldef_s
 {
 	int				order;
+	char			id[33];
 
 	state_t			*state;		// Pointer to the states list (in dd_defns.c).
 	int				flags;
@@ -87,6 +88,7 @@ void R_ShutdownModels(void);
 void R_ClearModelPath(void);
 void R_AddModelPath(char *addPath, boolean append);
 float R_CheckModelFor(mobj_t *mo, modeldef_t **mdef, modeldef_t **nextmdef);
+modeldef_t *R_CheckIDModelFor(const char *id);
 void R_SetSpriteReplacement(int sprite, char *modelname);
 int R_FindModelFile(const char *filename, char *outfn);
 byte *R_LoadSkin(model_t *mdl, int skin, int *width, int *height, int *pxsize);
diff --git a/doomsday/Src/dd_defns.c b/doomsday/Src/dd_defns.c
index bca31ad397..951237db2d 100644
--- a/doomsday/Src/dd_defns.c
+++ b/doomsday/Src/dd_defns.c
@@ -198,6 +198,18 @@ int Def_GetStateNum(char *id)
 	return -1;
 }
 
+int Def_GetModelNum(const char *id)
+{
+	int i;
+
+	if(!id[0]) return -1;
+
+	for(i = 0; i < defs.count.models.num; i++)
+		if(!strcmp(defs.models[i].id, id))
+			return i;
+	return -1;
+}
+
 int Def_GetSoundNum(char *id)
 {
 	int i;