--- a/src/ai/api/ai_tile.hpp.sq	Tue Apr 15 15:34:02 2008 +0000
+++ b/src/ai/api/ai_tile.hpp.sq	Tue Apr 15 16:11:29 2008 +0000
@@ -44,6 +44,7 @@
 	SQAITile.DefSQConst(engine, AITile::SLOPE_STEEP_S,     "SLOPE_STEEP_S");
 	SQAITile.DefSQConst(engine, AITile::SLOPE_STEEP_E,     "SLOPE_STEEP_E");
 	SQAITile.DefSQConst(engine, AITile::SLOPE_STEEP_N,     "SLOPE_STEEP_N");
+	SQAITile.DefSQConst(engine, AITile::SLOPE_INVALID,     "SLOPE_INVALID");
 
 	AIError::RegisterErrorMap(STR_1003_ALREADY_AT_SEA_LEVEL, AITile::ERR_TILE_TOO_HIGH);
 	AIError::RegisterErrorMap(STR_1003_ALREADY_AT_SEA_LEVEL, AITile::ERR_TILE_TOO_LOW);
@@ -55,7 +56,10 @@
 	SQAITile.DefSQStaticMethod(engine, &AITile::IsBuildable,                "IsBuildable",                2, "xi");
 	SQAITile.DefSQStaticMethod(engine, &AITile::IsBuildableRectangle,       "IsBuildableRectangle",       4, "xiii");
 	SQAITile.DefSQStaticMethod(engine, &AITile::IsWater,                    "IsWater",                    2, "xi");
+	SQAITile.DefSQStaticMethod(engine, &AITile::IsSteepSlope,               "IsSteepSlope",               2, "xi");
+	SQAITile.DefSQStaticMethod(engine, &AITile::IsHalftileSlope,            "IsHalftileSlope",            2, "xi");
 	SQAITile.DefSQStaticMethod(engine, &AITile::GetSlope,                   "GetSlope",                   2, "xi");
+	SQAITile.DefSQStaticMethod(engine, &AITile::GetComplementSlope,         "GetComplementSlope",         2, "xi");
 	SQAITile.DefSQStaticMethod(engine, &AITile::GetHeight,                  "GetHeight",                  2, "xi");
 	SQAITile.DefSQStaticMethod(engine, &AITile::GetCargoAcceptance,         "GetCargoAcceptance",         6, "xiiiii");
 	SQAITile.DefSQStaticMethod(engine, &AITile::GetCargoProduction,         "GetCargoProduction",         6, "xiiiii");