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-rw-r--r--src/company_cmd.cpp9
-rw-r--r--src/functions.h2
-rw-r--r--src/rail_cmd.cpp48
-rw-r--r--src/road_cmd.cpp6
-rw-r--r--src/tunnelbridge_cmd.cpp4
-rw-r--r--src/unmovable_cmd.cpp12
-rw-r--r--src/water_cmd.cpp19
7 files changed, 74 insertions, 26 deletions
diff --git a/src/company_cmd.cpp b/src/company_cmd.cpp
index 29343a09b..e1b3e34f5 100644
--- a/src/company_cmd.cpp
+++ b/src/company_cmd.cpp
@@ -266,20 +266,19 @@ bool CheckOwnership(Owner owner, TileIndex tile)
* the given tile. If that isn't the case an
* appropriate error will be given.
* @param tile the tile to check.
- * @return true iff it's owned by the current company.
+ * @return A succeeded command iff it's owned by the current company, else a failed command.
*/
-bool CheckTileOwnership(TileIndex tile)
+CommandCost CheckTileOwnership(TileIndex tile)
{
Owner owner = GetTileOwner(tile);
assert(owner < OWNER_END);
- if (owner == _current_company) return true;
- _error_message = STR_ERROR_OWNED_BY;
+ if (owner == _current_company) return CommandCost();
/* no need to get the name of the owner unless we're the local company (saves some time) */
if (IsLocalCompany()) GetNameOfOwner(owner, tile);
- return false;
+ return_cmd_error(STR_ERROR_OWNED_BY);
}
static void GenerateCompanyName(Company *c)
diff --git a/src/functions.h b/src/functions.h
index 28c8f16bb..6acbb9af7 100644
--- a/src/functions.h
+++ b/src/functions.h
@@ -25,7 +25,7 @@ bool CheckCompanyHasMoney(CommandCost &cost);
void SubtractMoneyFromCompany(CommandCost cost);
void SubtractMoneyFromCompanyFract(CompanyID company, CommandCost cost);
bool CheckOwnership(Owner owner, TileIndex tile = 0);
-bool CheckTileOwnership(TileIndex tile);
+CommandCost CheckTileOwnership(TileIndex tile);
/* misc functions */
/**
diff --git a/src/rail_cmd.cpp b/src/rail_cmd.cpp
index 3475eb90e..bce6732da 100644
--- a/src/rail_cmd.cpp
+++ b/src/rail_cmd.cpp
@@ -366,13 +366,15 @@ CommandCost CmdBuildSingleRail(TileIndex tile, DoCommandFlag flags, uint32 p1, u
switch (GetTileType(tile)) {
case MP_RAILWAY: {
- if (!CheckTileOwnership(tile)) return CMD_ERROR;
+ CommandCost ret = CheckTileOwnership(tile);
+ ret.SetGlobalErrorMessage();
+ if (ret.Failed()) return ret;
if (!IsPlainRail(tile)) return CMD_ERROR;
if (!IsCompatibleRail(GetRailType(tile), railtype)) return_cmd_error(STR_ERROR_IMPOSSIBLE_TRACK_COMBINATION);
- CommandCost ret = CheckTrackCombination(tile, trackbit, flags);
+ ret = CheckTrackCombination(tile, trackbit, flags);
if (ret.Succeeded()) ret = EnsureNoTrainOnTrack(tile, track);
ret.SetGlobalErrorMessage();
if (ret.Failed()) return ret;
@@ -514,11 +516,14 @@ CommandCost CmdRemoveSingleRail(TileIndex tile, DoCommandFlag flags, uint32 p1,
switch (GetTileType(tile)) {
case MP_ROAD: {
- if (!IsLevelCrossing(tile) ||
- GetCrossingRailBits(tile) != trackbit ||
- (_current_company != OWNER_WATER && !CheckTileOwnership(tile))) {
- return CMD_ERROR;
+ if (!IsLevelCrossing(tile) || GetCrossingRailBits(tile) != trackbit) return CMD_ERROR;
+
+ if (_current_company != OWNER_WATER) {
+ CommandCost ret = CheckTileOwnership(tile);
+ ret.SetGlobalErrorMessage();
+ if (ret.Failed()) return ret;
}
+
if (!(flags & DC_BANKRUPT)) {
CommandCost ret = EnsureNoVehicleOnGround(tile);
ret.SetGlobalErrorMessage();
@@ -539,7 +544,13 @@ CommandCost CmdRemoveSingleRail(TileIndex tile, DoCommandFlag flags, uint32 p1,
case MP_RAILWAY: {
TrackBits present;
- if (!IsPlainRail(tile) || (_current_company != OWNER_WATER && !CheckTileOwnership(tile))) return CMD_ERROR;
+ if (!IsPlainRail(tile)) return CMD_ERROR;
+
+ if (_current_company != OWNER_WATER) {
+ CommandCost ret = CheckTileOwnership(tile);
+ ret.SetGlobalErrorMessage();
+ if (ret.Failed()) return ret;
+ }
CommandCost ret = EnsureNoTrainOnTrack(tile, track);
ret.SetGlobalErrorMessage();
@@ -906,7 +917,9 @@ CommandCost CmdBuildSingleSignal(TileIndex tile, DoCommandFlag flags, uint32 p1,
/* Protect against invalid signal copying */
if (p2 != 0 && (p2 & SignalOnTrack(track)) == 0) return CMD_ERROR;
- if (!CheckTileOwnership(tile)) return CMD_ERROR;
+ ret = CheckTileOwnership(tile);
+ ret.SetGlobalErrorMessage();
+ if (ret.Failed()) return ret;
{
/* See if this is a valid track combination for signals, (ie, no overlap) */
@@ -1265,7 +1278,11 @@ CommandCost CmdRemoveSingleSignal(TileIndex tile, DoCommandFlag flags, uint32 p1
if (ret.Failed()) return ret;
/* Only water can remove signals from anyone */
- if (_current_company != OWNER_WATER && !CheckTileOwnership(tile)) return CMD_ERROR;
+ if (_current_company != OWNER_WATER) {
+ CommandCost ret = CheckTileOwnership(tile);
+ ret.SetGlobalErrorMessage();
+ if (ret.Failed()) return ret;
+ }
/* Do it? */
if (flags & DC_EXEC) {
@@ -1398,7 +1415,11 @@ CommandCost CmdConvertRail(TileIndex tile, DoCommandFlag flags, uint32 p1, uint3
if (type == totype || (_settings_game.vehicle.disable_elrails && totype == RAILTYPE_RAIL && type == RAILTYPE_ELECTRIC)) continue;
/* Trying to convert other's rail */
- if (!CheckTileOwnership(tile)) continue;
+ CommandCost ret = CheckTileOwnership(tile);
+ if (ret.Failed()) {
+ ret.SetGlobalErrorMessage();
+ continue;
+ }
SmallVector<Train *, 2> vehicles_affected;
@@ -1527,8 +1548,11 @@ CommandCost CmdConvertRail(TileIndex tile, DoCommandFlag flags, uint32 p1, uint3
static CommandCost RemoveTrainDepot(TileIndex tile, DoCommandFlag flags)
{
- if (!CheckTileOwnership(tile) && _current_company != OWNER_WATER)
- return CMD_ERROR;
+ if (_current_company != OWNER_WATER) {
+ CommandCost ret = CheckTileOwnership(tile);
+ ret.SetGlobalErrorMessage();
+ if (ret.Failed()) return ret;
+ }
CommandCost ret = EnsureNoVehicleOnGround(tile);
ret.SetGlobalErrorMessage();
diff --git a/src/road_cmd.cpp b/src/road_cmd.cpp
index 0f6cc1581..366f6bd0c 100644
--- a/src/road_cmd.cpp
+++ b/src/road_cmd.cpp
@@ -911,7 +911,11 @@ CommandCost CmdBuildRoadDepot(TileIndex tile, DoCommandFlag flags, uint32 p1, ui
static CommandCost RemoveRoadDepot(TileIndex tile, DoCommandFlag flags)
{
- if (!CheckTileOwnership(tile) && _current_company != OWNER_WATER) return CMD_ERROR;
+ if (_current_company != OWNER_WATER) {
+ CommandCost ret = CheckTileOwnership(tile);
+ ret.SetGlobalErrorMessage();
+ if (ret.Failed()) return ret;
+ }
CommandCost ret = EnsureNoVehicleOnGround(tile);
ret.SetGlobalErrorMessage();
diff --git a/src/tunnelbridge_cmd.cpp b/src/tunnelbridge_cmd.cpp
index 612c49041..81688b6bc 100644
--- a/src/tunnelbridge_cmd.cpp
+++ b/src/tunnelbridge_cmd.cpp
@@ -587,7 +587,9 @@ static inline bool CheckAllowRemoveTunnelBridge(TileIndex tile)
if (HasBit(rts, ROADTYPE_TRAM)) tram_owner = GetRoadOwner(tile, ROADTYPE_TRAM);
/* We can remove unowned road and if the town allows it */
- if (road_owner == OWNER_TOWN && !(_settings_game.construction.extra_dynamite || _cheats.magic_bulldozer.value)) return CheckTileOwnership(tile);
+ if (road_owner == OWNER_TOWN && !(_settings_game.construction.extra_dynamite || _cheats.magic_bulldozer.value)) {
+ return CheckTileOwnership(tile).Succeeded();
+ }
if (road_owner == OWNER_NONE || road_owner == OWNER_TOWN) road_owner = _current_company;
if (tram_owner == OWNER_NONE) tram_owner = _current_company;
diff --git a/src/unmovable_cmd.cpp b/src/unmovable_cmd.cpp
index 039a0162f..d3a97b5f3 100644
--- a/src/unmovable_cmd.cpp
+++ b/src/unmovable_cmd.cpp
@@ -175,7 +175,11 @@ CommandCost CmdPurchaseLandArea(TileIndex tile, DoCommandFlag flags, uint32 p1,
CommandCost CmdSellLandArea(TileIndex tile, DoCommandFlag flags, uint32 p1, uint32 p2, const char *text)
{
if (!IsOwnedLandTile(tile)) return CMD_ERROR;
- if (!CheckTileOwnership(tile) && _current_company != OWNER_WATER) return CMD_ERROR;
+ if (_current_company != OWNER_WATER) {
+ CommandCost ret = CheckTileOwnership(tile);
+ ret.SetGlobalErrorMessage();
+ if (ret.Failed()) return ret;
+ }
CommandCost ret = EnsureNoVehicleOnGround(tile);
ret.SetGlobalErrorMessage();
@@ -500,7 +504,11 @@ static void ChangeTileOwner_Unmovable(TileIndex tile, Owner old_owner, Owner new
static CommandCost TerraformTile_Unmovable(TileIndex tile, DoCommandFlag flags, uint z_new, Slope tileh_new)
{
/* Owned land remains unsold */
- if (IsOwnedLand(tile) && CheckTileOwnership(tile)) return CommandCost();
+ if (IsOwnedLand(tile)) {
+ CommandCost ret = CheckTileOwnership(tile);
+ ret.SetGlobalErrorMessage();
+ if (ret.Succeeded()) return CommandCost();
+ }
if (AutoslopeEnabled() && (IsStatue(tile) || IsCompanyHQ(tile))) {
if (!IsSteepSlope(tileh_new) && (z_new + GetSlopeMaxZ(tileh_new) == GetTileMaxZ(tile))) return CommandCost(EXPENSES_CONSTRUCTION, _price[PR_BUILD_FOUNDATION]);
diff --git a/src/water_cmd.cpp b/src/water_cmd.cpp
index 01c25157f..6b881352e 100644
--- a/src/water_cmd.cpp
+++ b/src/water_cmd.cpp
@@ -168,7 +168,10 @@ void MakeWaterKeepingClass(TileIndex tile, Owner o)
static CommandCost RemoveShipDepot(TileIndex tile, DoCommandFlag flags)
{
if (!IsShipDepot(tile)) return CMD_ERROR;
- if (!CheckTileOwnership(tile)) return CMD_ERROR;
+
+ CommandCost ret = CheckTileOwnership(tile);
+ ret.SetGlobalErrorMessage();
+ if (ret.Failed()) return ret;
TileIndex tile2 = GetOtherShipDepotTile(tile);
@@ -244,10 +247,14 @@ static CommandCost RemoveShiplift(TileIndex tile, DoCommandFlag flags)
{
TileIndexDiff delta = TileOffsByDiagDir(GetLockDirection(tile));
- if (!CheckTileOwnership(tile) && GetTileOwner(tile) != OWNER_NONE) return CMD_ERROR;
+ if (GetTileOwner(tile) != OWNER_NONE) {
+ CommandCost ret = CheckTileOwnership(tile);
+ ret.SetGlobalErrorMessage();
+ if (ret.Failed()) return ret;
+ }
/* make sure no vehicle is on the tile. */
- CommandCost ret = EnsureNoVehicleOnGround(tile);
+ ret = EnsureNoVehicleOnGround(tile);
if (ret.Succeeded()) ret = EnsureNoVehicleOnGround(tile + delta);
if (ret.Succeeded()) ret = EnsureNoVehicleOnGround(tile - delta);
ret.SetGlobalErrorMessage();
@@ -361,7 +368,11 @@ static CommandCost ClearTile_Water(TileIndex tile, DoCommandFlag flags)
ret.SetGlobalErrorMessage();
if (ret.Failed()) return ret;
- if (GetTileOwner(tile) != OWNER_WATER && GetTileOwner(tile) != OWNER_NONE && !CheckTileOwnership(tile)) return CMD_ERROR;
+ if (GetTileOwner(tile) != OWNER_WATER && GetTileOwner(tile) != OWNER_NONE) {
+ CommandCost ret = CheckTileOwnership(tile);
+ ret.SetGlobalErrorMessage();
+ if (ret.Failed()) return ret;
+ }
if (flags & DC_EXEC) {
DoClearSquare(tile);
generated by cgit v1.2.3-54-g00ecf (git 2.44.0) at 2024-07-07 09:16:30 +0000