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-rw-r--r--src/dock_gui.cpp62
-rw-r--r--src/lang/english.txt1
-rw-r--r--src/tunnelbridge_cmd.cpp2
3 files changed, 55 insertions, 10 deletions
diff --git a/src/dock_gui.cpp b/src/dock_gui.cpp
index a0c676a05..1bc769c13 100644
--- a/src/dock_gui.cpp
+++ b/src/dock_gui.cpp
@@ -28,6 +28,7 @@
#include "company_base.h"
#include "station_type.h"
#include "hotkeys.h"
+#include "bridge.h"
#include "table/sprites.h"
#include "table/strings.h"
@@ -90,9 +91,46 @@ static void PlaceDocks_BuildRiver(TileIndex tile)
VpStartPlaceSizing(tile, VPM_X_AND_Y, DDSP_CREATE_RIVER);
}
+/**
+ * Gets the other end of the aqueduct, if possible.
+ * @param tile_from The begin tile for the aqueduct.
+ * @param [out] tile_to The tile till where to show a selection for the aqueduct.
+ * @return The other end of the aqueduct, or otherwise a tile in line with the aqueduct to cause the right error message.
+ */
+static TileIndex GetOtherAqueductEnd(TileIndex tile_from, TileIndex *tile_to = NULL)
+{
+ uint z;
+ DiagDirection dir = GetInclinedSlopeDirection(GetTileSlope(tile_from, &z));
+
+ /* If the direction isn't right, just return the next tile so the command
+ * complains about the wrong slope instead of the ends not matching up.
+ * Make sure the coordinate is always a valid tile within the map, so we
+ * don't go "off" the map. That would cause the wrong error message. */
+ if (!IsValidDiagDirection(dir)) return TILE_ADDXY(tile_from, TileX(tile_from) > 2 ? -1 : 1, 0);
+
+ /* Direction the aqueduct is built to. */
+ TileIndexDiff offset = TileOffsByDiagDir(ReverseDiagDir(dir));
+ /* The maximum length of the aqueduct. */
+ int max_length = min(_settings_game.construction.longbridges ? MAX_BRIDGE_LENGTH_LONGBRIDGES : MAX_BRIDGE_LENGTH, DistanceFromEdgeDir(tile_from, ReverseDiagDir(dir)) - 1);
+
+ TileIndex endtile = tile_from;
+ for (int length = 0; IsValidTile(endtile) && TileX(endtile) != 0 && TileY(endtile) != 0; length++) {
+ endtile = TILE_ADD(endtile, offset);
+
+ if (length > max_length) break;
+
+ if (GetTileMaxZ(endtile) > z) {
+ if (tile_to != NULL) *tile_to = endtile;
+ break;
+ }
+ }
+
+ return endtile;
+}
+
static void PlaceDocks_Aqueduct(TileIndex tile)
{
- VpStartPlaceSizing(tile, VPM_X_OR_Y, DDSP_BUILD_BRIDGE);
+ DoCommandP(tile, GetOtherAqueductEnd(tile), TRANSPORT_WATER << 15, CMD_BUILD_BRIDGE | CMD_MSG(STR_ERROR_CAN_T_BUILD_AQUEDUCT_HERE), CcBuildBridge);
}
@@ -184,7 +222,7 @@ static void BuildDocksClick_River(Window *w)
*/
static void BuildDocksClick_Aqueduct(Window *w)
{
- HandlePlacePushButton(w, DTW_BUILD_AQUEDUCT, SPR_CURSOR_AQUEDUCT, HT_RECT, PlaceDocks_Aqueduct);
+ HandlePlacePushButton(w, DTW_BUILD_AQUEDUCT, SPR_CURSOR_AQUEDUCT, HT_SPECIAL, PlaceDocks_Aqueduct);
}
@@ -253,10 +291,6 @@ struct BuildDocksToolbarWindow : Window {
{
if (pt.x != -1) {
switch (select_proc) {
- case DDSP_BUILD_BRIDGE:
- if (!_settings_client.gui.persistent_buildingtools) ResetObjectToPlace();
- DoCommandP(end_tile, start_tile, TRANSPORT_WATER << 15, CMD_BUILD_BRIDGE | CMD_MSG(STR_ERROR_CAN_T_BUILD_AQUEDUCT_HERE), CcBuildBridge);
-
case DDSP_DEMOLISH_AREA:
GUIPlaceProcDragXY(select_proc, start_tile, end_tile);
break;
@@ -284,9 +318,19 @@ struct BuildDocksToolbarWindow : Window {
virtual void OnPlacePresize(Point pt, TileIndex tile_from)
{
- DiagDirection dir = GetInclinedSlopeDirection(GetTileSlope(tile_from, NULL));
- TileIndex tile_to = (dir != INVALID_DIAGDIR ? TileAddByDiagDir(tile_from, ReverseDiagDir(dir)) : tile_from);
- tile_from = this->last_clicked_widget == DTW_LOCK && dir != INVALID_DIAGDIR ? TileAddByDiagDir(tile_from, dir) : tile_from;
+ TileIndex tile_to = tile_from;
+
+ if (this->last_clicked_widget == DTW_BUILD_AQUEDUCT) {
+ GetOtherAqueductEnd(tile_from, &tile_to);
+ } else {
+ DiagDirection dir = GetInclinedSlopeDirection(GetTileSlope(tile_from, NULL));
+ if (IsValidDiagDirection(dir)) {
+ /* Locks and docks always select the tile "down" the slope. */
+ tile_to = TileAddByDiagDir(tile_from, ReverseDiagDir(dir));
+ /* Locks also select the tile "up" the slope. */
+ if (this->last_clicked_widget == DTW_LOCK) tile_from = TileAddByDiagDir(tile_from, dir);
+ }
+ }
VpSetPresizeRange(tile_from, tile_to);
}
diff --git a/src/lang/english.txt b/src/lang/english.txt
index 2732d7452..6a131e314 100644
--- a/src/lang/english.txt
+++ b/src/lang/english.txt
@@ -3668,6 +3668,7 @@ STR_ERROR_BRIDGE_TOO_LOW_FOR_TERRAIN :{WHITE}Bridge i
STR_ERROR_START_AND_END_MUST_BE_IN :{WHITE}Start and end must be in line
STR_ERROR_ENDS_OF_BRIDGE_MUST_BOTH :{WHITE}... ends of bridge must both be on land
STR_ERROR_BRIDGE_TOO_LONG :{WHITE}... bridge too long
+STR_ERROR_BRIDGE_THROUGH_MAP_BORDER :{WHITE}Bridge would end out of the map
# Tunnel related errors
STR_ERROR_CAN_T_BUILD_TUNNEL_HERE :{WHITE}Can't build tunnel here...
diff --git a/src/tunnelbridge_cmd.cpp b/src/tunnelbridge_cmd.cpp
index 6a4309445..f47708ce7 100644
--- a/src/tunnelbridge_cmd.cpp
+++ b/src/tunnelbridge_cmd.cpp
@@ -211,7 +211,7 @@ CommandCost CmdBuildBridge(TileIndex end_tile, DoCommandFlag flags, uint32 p1, u
/* unpack parameters */
BridgeType bridge_type = GB(p2, 0, 8);
- if (!IsValidTile(p1)) return CMD_ERROR;
+ if (!IsValidTile(p1)) return_cmd_error(STR_ERROR_BRIDGE_THROUGH_MAP_BORDER);
TransportType transport_type = Extract<TransportType, 15, 2>(p2);