# HG changeset patch
# User rubidium <rubidium@openttd.org>
# Date 2007-09-30 18:53:59
# Node ID dc7d1afc14baeded016433d7fb75d6acf4052e9c
# Parent  0608e862fd36be396100562f80bf1a01011bf3f4

(svn r11189) -Fix: if the location check callback results in something invalid (i.e. not a callback result), the industry should be allowed to be build as that's how TTDP does it.

diff --git a/src/newgrf_industries.cpp b/src/newgrf_industries.cpp
--- a/src/newgrf_industries.cpp
+++ b/src/newgrf_industries.cpp
@@ -439,7 +439,9 @@ bool CheckIfCallBackAllowsCreation(TileI
 
 	group = Resolve(GetIndustrySpec(type)->grf_prop.spritegroup, &object);
 
-	if (group == NULL || group->type != SGT_CALLBACK) return false;
+	/* Unlike the "normal" cases, not having a valid result means we allow
+	 * the building of the industry, as that's how it's done in TTDP. */
+	if (group == NULL || group->type != SGT_CALLBACK) return true;
 
 	switch (group->g.callback.result) {
 		case 0x400: return true;