5 files changed, 41 insertions, 0 deletions
diff --git a/src/ai/api/ai_abstractlist.hpp b/src/ai/api/ai_abstractlist.hpp
index d99791fd4..0a8739182 100644
--- a/src/ai/api/ai_abstractlist.hpp
+++ b/src/ai/api/ai_abstractlist.hpp
@@ -25,6 +25,11 @@ public:
 		SORT_BY_ITEM,  //!< Sort the list based on the item itself.
 	};
 
+	/** Sort ascending */
+	static const bool SORT_ASCENDING = true;
+	/** Sort descnding */
+	static const bool SORT_DESCENDING = false;
+
 private:
 	AIAbstractListSorter *sorter;
 	SorterType sorter_type;
@@ -123,6 +128,7 @@ public:
 	 * @param sorter    the type of sorter to use
 	 * @param ascending if true, lowest value is on top, else at bottom.
 	 * @note the current item stays at the same place.
+	 * @see SORT_ASCENDING SORT_DESCENDING
 	 */
 	void Sort(SorterType sorter, bool ascending);
 
diff --git a/src/ai/api/ai_abstractlist.hpp.sq b/src/ai/api/ai_abstractlist.hpp.sq
index 1ab62061a..cf84420fb 100644
--- a/src/ai/api/ai_abstractlist.hpp.sq
+++ b/src/ai/api/ai_abstractlist.hpp.sq
@@ -24,6 +24,9 @@ void SQAIAbstractList_Register(Squirrel *engine) {
 	SQAIAbstractList.DefSQConst(engine, AIAbstractList::SORT_BY_VALUE, "SORT_BY_VALUE");
 	SQAIAbstractList.DefSQConst(engine, AIAbstractList::SORT_BY_ITEM,  "SORT_BY_ITEM");
 
+	SQAIAbstractList.DefSQConst(engine, AIAbstractList::SORT_ASCENDING,  "SORT_ASCENDING");
+	SQAIAbstractList.DefSQConst(engine, AIAbstractList::SORT_DESCENDING, "SORT_DESCENDING");
+
 	SQAIAbstractList.DefSQMethod(engine, &AIAbstractList::Clear,              "Clear",              1, "x");
 	SQAIAbstractList.DefSQMethod(engine, &AIAbstractList::HasItem,            "HasItem",            2, "xi");
 	SQAIAbstractList.DefSQMethod(engine, &AIAbstractList::Begin,              "Begin",              1, "x");
diff --git a/src/ai/api/squirrel_export.awk b/src/ai/api/squirrel_export.awk
index 930de32dd..eb829a510 100644
--- a/src/ai/api/squirrel_export.awk
+++ b/src/ai/api/squirrel_export.awk
@@ -34,6 +34,7 @@ BEGIN {
 	enum_value_size = 0
 	enum_string_to_error_size = 0
 	enum_error_to_string_size = 0
+	const_size = 0
 	struct_size = 0
 	method_size = 0
 	static_method_size = 0
@@ -217,6 +218,17 @@ BEGIN {
 	}
 	if (enum_value_size != 0) print ""
 
+	# Const values
+	mlen = 0
+	for (i = 1; i <= const_size; i++) {
+		if (mlen <= length(const_value[i])) mlen = length(const_value[i])
+	}
+	for (i = 1; i <= const_size; i++) {
+		print "	SQ" cls ".DefSQConst(engine, " cls "::" const_value[i] ", " substr(spaces, 1, mlen - length(const_value[i])) "\""  const_value[i] "\");"
+		delete const_value[i]
+	}
+	if (const_size != 0) print ""
+
 	# Mapping of OTTD strings to errors
 	mlen = 0
 	for (i = 1; i <= enum_string_to_error_size; i++) {
@@ -320,6 +332,13 @@ BEGIN {
 	}
 }
 
+# Add a const (non-enum) value
+/^[ 	]*static const \w+ \w+ = \w+;$/ {
+	const_size++
+	const_value[const_size] = $4
+	next
+}
+
 # Add a method to the list
 /^.*\(.*\).*$/ {
 	if (cls_level != 1) next
diff --git a/src/script/squirrel.cpp b/src/script/squirrel.cpp
index 3fb778043..31dcf6aea 100644
--- a/src/script/squirrel.cpp
+++ b/src/script/squirrel.cpp
@@ -131,6 +131,13 @@ void Squirrel::AddConst(const char *var_name, int value)
 	sq_newslot(this->vm, -3, SQTrue);
 }
 
+void Squirrel::AddConst(const char *var_name, bool value)
+{
+	sq_pushstring(this->vm, OTTD2FS(var_name), -1);
+	sq_pushbool(this->vm, value);
+	sq_newslot(this->vm, -3, SQTrue);
+}
+
 void Squirrel::AddClassBegin(const char *class_name)
 {
 	sq_pushroottable(this->vm);
diff --git a/src/script/squirrel.hpp b/src/script/squirrel.hpp
index 32f24cb11..612c6ce2e 100644
--- a/src/script/squirrel.hpp
+++ b/src/script/squirrel.hpp
@@ -78,6 +78,12 @@ public:
 	void AddConst(const char *var_name, int value);
 
 	/**
+	 * Adds a const to the stack. Depending on the current state this means
+	 *  either a const to a class or to the global space.
+	 */
+	void AddConst(const char *var_name, bool value);
+
+	/**
 	 * Adds a class to the global scope. Make sure to call AddClassEnd when you
 	 *  are done adding methods.
 	 */