Add: bridge pillar flags

Author: Rito13

nml/actions/action0properties.py

@@ -16,6 +16,7 @@
 import itertools
 
 from nml import generic, nmlop, global_constants
+from nml.global_constants import constant_numbers as global_constant_numbers
 from nml.expression import (
     AcceptCargo,
     Array,
@@ -825,13 +826,27 @@ def generated_function(value):
         if not isinstance(value, Array):
             raise generic.ScriptError(f"{list_type} list must be an array", value.pos)
         if len(value.values) % 2 != 0:
-            generic.print_warning(generic.Warning.GENERIC, f"{list_type} list does not have even length", 0)
+            raise generic.ScriptError(f"{list_type} list does not have even length", value.pos)
         return [VariableByteListProp(prop_num, [[flags.reduce_constant().value for flags in value.values]], True)]
 
     return generated_function
 
 
-
+def invert_bridge_pillars_flags(value):
+    out = ConstantNumeric(0, value.pos)
+    for i_flag, o_flag in [
+        (global_constant_numbers["BRIDGE_PILLAR_CORNER_W"], global_constant_numbers["BRIDGE_PILLAR_CORNER_S"]),
+        (global_constant_numbers["BRIDGE_PILLAR_CORNER_S"], global_constant_numbers["BRIDGE_PILLAR_CORNER_W"]),
+        (global_constant_numbers["BRIDGE_PILLAR_CORNER_N"], global_constant_numbers["BRIDGE_PILLAR_CORNER_E"]),
+        (global_constant_numbers["BRIDGE_PILLAR_CORNER_E"], global_constant_numbers["BRIDGE_PILLAR_CORNER_N"]),
+        (global_constant_numbers["BRIDGE_PILLAR_EDGE_NE"],  global_constant_numbers["BRIDGE_PILLAR_EDGE_NE"]),
+        (global_constant_numbers["BRIDGE_PILLAR_EDGE_SE"],  global_constant_numbers["BRIDGE_PILLAR_EDGE_SW"]),
+        (global_constant_numbers["BRIDGE_PILLAR_EDGE_SW"],  global_constant_numbers["BRIDGE_PILLAR_EDGE_SE"]),
+        (global_constant_numbers["BRIDGE_PILLAR_EDGE_NW"],  global_constant_numbers["BRIDGE_PILLAR_EDGE_NW"]),
+    ] :
+        if value.value & (1 << i_flag):
+            out.value += 1 << o_flag
+    return out
 
 
 # fmt: off
@@ -860,7 +875,7 @@ def generated_function(value):
     "classname":             {"size": 2, "num": (256, -1, 0x1D), "string": (256, 0xC4, 0xDC)},
     "tile_flags":            {"custom_function": station_tile_flags},  # = prop 1E
     "minimum_bridge_height": {"custom_function": array_for_station_properties(0x20, "Bridge heights", 10, lambda v : v)},
-    "bridge_pillars_flags":  {"custom_function": array_for_station_properties(0x21, "Flag", 10, lambda v : v)},
+    "bridge_pillars_flags":  {"custom_function": array_for_station_properties(0x21, "Flag", 10, invert_bridge_pillars_flags)},
 }
 # fmt: on
 

nml/global_constants.py

@@ -385,6 +385,16 @@ def constant_number(name, info, pos):
     # station tiles
     "STAT_ALL_TILES"     : 0xFF,
 
+    # bridge pillar flags
+    "BRIDGE_PILLAR_CORNER_W"        : 0,
+    "BRIDGE_PILLAR_CORNER_S"        : 1,
+    "BRIDGE_PILLAR_CORNER_E"        : 2,
+    "BRIDGE_PILLAR_CORNER_N"        : 3,
+    "BRIDGE_PILLAR_EDGE_NE"         : 4,
+    "BRIDGE_PILLAR_EDGE_SE"         : 5,
+    "BRIDGE_PILLAR_EDGE_SW"         : 6,
+    "BRIDGE_PILLAR_EDGE_NW"         : 7,
+
     # house flags
     "HOUSE_FLAG_NOT_SLOPED"         : 1,
     "HOUSE_FLAG_ANIMATE"            : 5,