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Feature: Allow stations and roadstops under bridges.

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Bridges above stations will have pillars excluded if they conflict with the station layout.

Partly based on the system implemented in JGRPP.

Co-authored-by: <su@angel-island.zone>
This commit is contained in:
Peter Nelson
2025-08-14 19:35:33 +01:00
committed by Peter Nelson
parent 6d6e64b1f0
commit 9a294ab2ed
6 changed files with 244 additions and 31 deletions
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11
src/tunnelbridge_cmd.cpp
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@@ -280,7 +280,6 @@ static CommandCost CheckBuildAbove(TileIndex tile, DoCommandFlags flags, Axis ax
if (_tile_type_procs[GetTileType(tile)]->check_build_above_proc != nullptr) {
return _tile_type_procs[GetTileType(tile)]->check_build_above_proc(tile, flags, axis, height);
}
/* A tile without a handler must be cleared. */
return Command<CMD_LANDSCAPE_CLEAR>::Do(flags, tile);
}
@@ -441,6 +440,14 @@ CommandCost CmdBuildBridge(DoCommandFlags flags, TileIndex tile_end, TileIndex t
/* If bridge belonged to bankrupt company, it has a new owner now */
is_new_owner = (owner == OWNER_NONE);
if (is_new_owner) owner = company;
/* Check if the new bridge is compatible with tiles underneath. */
TileIndexDiff delta = (direction == AXIS_X ? TileDiffXY(1, 0) : TileDiffXY(0, 1));
for (TileIndex tile = tile_start + delta; tile != tile_end; tile += delta) {
CommandCost ret = CheckBuildAbove(tile, flags, direction, z_start + 1);
if (ret.Failed()) return ret;
cost.AddCost(ret.GetCost());
}
} else {
/* Build a new bridge. */
@@ -491,7 +498,7 @@ CommandCost CmdBuildBridge(DoCommandFlags flags, TileIndex tile_end, TileIndex t
return CommandCost(STR_ERROR_MUST_DEMOLISH_BRIDGE_FIRST);
}
ret = CheckBuildAbove(tile, flags, direction, z_start);
ret = CheckBuildAbove(tile, flags, direction, z_start + 1);
if (ret.Failed()) return ret;
cost.AddCost(ret.GetCost());