mirror of https://github.com/OpenTTD/OpenTTD.git
(svn r8136) -Codechange: Station spread rectangle manipulators turned into StationRect::methods.
This commit is contained in:
KUDr
parent
de10e911cb
commit
cd74706c54
145
src/station.cpp
145
src/station.cpp
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@ -35,8 +35,6 @@
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#include "date.h"
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#include "helpers.hpp"
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void StationRect_Init(Station *st); // don't worry, will be removed soon
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Station::Station(TileIndex tile)
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{
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DEBUG(station, cDebugCtorLevel, "I+%3d", index);
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@ -54,8 +52,6 @@ Station::Station(TileIndex tile)
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random_bits = Random();
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waiting_triggers = 0;
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StationRect_Init(this);
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}
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/**
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@ -168,3 +164,144 @@ bool Station::TileBelongsToRailStation(TileIndex tile) const
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_error_message = STR_3008_TOO_MANY_STATIONS_LOADING;
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return NULL;
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}
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/************************************************************************/
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/* StationRect implementation */
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/************************************************************************/
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StationRect::StationRect()
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{
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MakeEmpty();
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}
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void StationRect::MakeEmpty()
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{
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left = top = right = bottom = 0;
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}
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bool StationRect::PtInRectXY(int x, int y) const
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{
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return (left <= x && x <= right && top <= y && y <= bottom);
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}
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bool StationRect::IsEmpty() const
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{
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return (left == 0 || left > right || top > bottom);
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}
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bool StationRect::BeforeAddTile(TileIndex tile, StationRectMode mode)
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{
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int x = TileX(tile);
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int y = TileY(tile);
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if (IsEmpty()) {
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// we are adding the first station tile
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left = right = x;
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top = bottom = y;
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} else if (!PtInRectXY(x, y)) {
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// current rect is not empty and new point is outside this rect
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// make new spread-out rectangle
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Rect new_rect = {min(x, left), min(y, top), max(x, right), max(y, bottom)};
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// check new rect dimensions against preset max
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int w = new_rect.right - new_rect.left + 1;
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int h = new_rect.bottom - new_rect.top + 1;
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if (mode != ADD_FORCE && (w > _patches.station_spread || h > _patches.station_spread)) {
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assert(mode != ADD_TRY);
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_error_message = STR_306C_STATION_TOO_SPREAD_OUT;
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return false;
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}
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// spread-out ok, return true
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if (mode != ADD_TEST) {
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// we should update the station rect
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*this = new_rect;
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}
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} else {
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; // new point is inside the rect, we don't need to do anything
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}
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return true;
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}
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bool StationRect::BeforeAddRect(TileIndex tile, int w, int h, StationRectMode mode)
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{
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return BeforeAddTile(tile, mode) && BeforeAddTile(TILE_ADDXY(tile, w - 1, h - 1), mode);
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}
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/*static*/ bool StationRect::ScanForStationTiles(StationID st_id, int left_a, int top_a, int right_a, int bottom_a)
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{
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TileIndex top_left = TileXY(left_a, top_a);
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int width = right_a - left_a + 1;
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int height = bottom_a - top_a + 1;
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BEGIN_TILE_LOOP(tile, width, height, top_left)
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if (IsTileType(tile, MP_STATION) && GetStationIndex(tile) == st_id) return true;
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END_TILE_LOOP(tile, width, height, top_left);
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return false;
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}
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bool StationRect::AfterRemoveTile(Station *st, TileIndex tile)
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{
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int x = TileX(tile);
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int y = TileY(tile);
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bool reduce_x, reduce_y;
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// look if removed tile was on the bounding rect edge
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// and try to reduce the rect by this edge
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// do it until we have empty rect or nothing to do
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for (;;) {
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// check if removed tile is on rect edge
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bool left_edge = (x == left);
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bool right_edge = (x == right);
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bool top_edge = (y == top);
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bool bottom_edge = (y == bottom);
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// can we reduce the rect in either direction?
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reduce_x = ((left_edge || right_edge) && !ScanForStationTiles(st->index, x, top, x, bottom));
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reduce_y = ((top_edge || bottom_edge) && !ScanForStationTiles(st->index, left, y, right, y));
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if (!(reduce_x || reduce_y)) break; // nothing to do (can't reduce)
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if (reduce_x) {
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// reduce horizontally
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if (left_edge) {
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// move left edge right
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left = x = x + 1;
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} else {
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// move right edge left
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right = x = x - 1;
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}
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}
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if (reduce_y) {
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// reduce vertically
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if (top_edge) {
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// move top edge down
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top = y = y + 1;
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} else {
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// move bottom edge up
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bottom = y = y - 1;
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}
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}
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if (left > right || top > bottom) {
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// can't continue, if the remaining rectangle is empty
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MakeEmpty();
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return true; // empty remaining rect
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}
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}
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return false; // non-empty remaining rect
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}
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bool StationRect::AfterRemoveRect(Station *st, TileIndex tile, int w, int h)
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{
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bool empty;
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assert(PtInRectXY(TileX(tile), TileY(tile)));
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assert(PtInRectXY(TileX(tile) + w - 1, TileY(tile) + h - 1));
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empty = AfterRemoveTile(st, tile);
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if (w != 1 || h != 1) empty = empty || AfterRemoveTile(st, TILE_ADDXY(tile, w - 1, h - 1));
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return empty;
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}
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StationRect& StationRect::operator = (Rect src)
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{
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left = src.left;
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top = src.top;
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right = src.right;
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bottom = src.bottom;
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return *this;
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}
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@ -59,6 +59,29 @@ typedef struct StationSpecList {
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uint8 localidx; /// Station ID within GRF of station
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} StationSpecList;
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/** StationRect - used to track station spread out rectangle - cheaper than scanning whole map */
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struct StationRect : public Rect {
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enum StationRectMode
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{
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ADD_TEST = 0,
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ADD_TRY,
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ADD_FORCE
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};
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StationRect();
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void MakeEmpty();
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bool PtInRectXY(int x, int y) const;
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bool IsEmpty() const;
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bool BeforeAddTile(TileIndex tile, StationRectMode mode);
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bool BeforeAddRect(TileIndex tile, int w, int h, StationRectMode mode);
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bool AfterRemoveTile(Station *st, TileIndex tile);
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bool AfterRemoveRect(Station *st, TileIndex tile, int w, int h);
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static bool ScanForStationTiles(StationID st_id, int left_a, int top_a, int right_a, int bottom_a);
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StationRect& operator = (Rect src);
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};
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struct Station {
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TileIndex xy;
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RoadStop *bus_stops;
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@ -107,9 +130,9 @@ struct Station {
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byte bus_stop_status_obsolete;
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byte blocked_months_obsolete;
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Rect rect; ///< Station spread out rectangle (not saved) maintained by StationRect_xxx() functions
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StationRect rect; ///< Station spread out rectangle (not saved) maintained by StationRect_xxx() functions
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static const int cDebugCtorLevel = 1;
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static const int cDebugCtorLevel = 3;
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Station(TileIndex tile = 0);
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~Station();
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@ -37,21 +37,6 @@
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#include <memory> // for auto_ptr
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typedef enum StationRectModes
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{
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RECT_MODE_TEST = 0,
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RECT_MODE_TRY,
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RECT_MODE_FORCE
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} StationRectMode;
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void StationRect_Init(Station *st);
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static bool StationRect_IsEmpty(Station *st);
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static bool StationRect_BeforeAddTile(Station *st, TileIndex tile, StationRectMode mode);
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static bool StationRect_BeforeAddRect(Station *st, TileIndex tile, int w, int h, StationRectMode mode);
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static bool StationRect_AfterRemoveTile(Station *st, TileIndex tile);
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static bool StationRect_AfterRemoveRect(Station *st, TileIndex tile, int w, int h);
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/**
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* Called if a new block is added to the station-pool
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*/
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@ -684,9 +669,9 @@ static void UpdateStationAcceptance(Station *st, bool show_msg)
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static void UpdateStationSignCoord(Station *st)
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{
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Rect *r = &st->rect;
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StationRect *r = &st->rect;
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if (StationRect_IsEmpty(st)) return; // no tiles belong to this station
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if (r->IsEmpty()) return; // no tiles belong to this station
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// clamp sign coord to be inside the station rect
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st->xy = TileXY(clampu(TileX(st->xy), r->left, r->right), clampu(TileY(st->xy), r->top, r->bottom));
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@ -970,7 +955,7 @@ int32 CmdBuildRailroadStation(TileIndex tile_org, uint32 flags, uint32 p1, uint3
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}
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//XXX can't we pack this in the "else" part of the if above?
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if (!StationRect_BeforeAddRect(st, tile_org, w_org, h_org, RECT_MODE_TEST)) return CMD_ERROR;
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if (!st->rect.BeforeAddRect(tile_org, w_org, h_org, StationRect::ADD_TEST)) return CMD_ERROR;
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} else {
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/* allocate and initialize new station */
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st = new Station(tile_org);
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@ -1031,7 +1016,7 @@ int32 CmdBuildRailroadStation(TileIndex tile_org, uint32 flags, uint32 p1, uint3
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st->build_date = _date;
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StationRect_BeforeAddRect(st, tile_org, w_org, h_org, RECT_MODE_TRY);
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st->rect.BeforeAddRect(tile_org, w_org, h_org, StationRect::ADD_TRY);
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tile_delta = (axis == AXIS_X ? TileDiffXY(1, 0) : TileDiffXY(0, 1));
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track = AxisToTrack(axis);
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@ -1155,7 +1140,7 @@ int32 CmdRemoveFromRailroadStation(TileIndex tile, uint32 flags, uint32 p1, uint
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uint specindex = GetCustomStationSpecIndex(tile);
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Track track = GetRailStationTrack(tile);
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DoClearSquare(tile);
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StationRect_AfterRemoveTile(st, tile);
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st->rect.AfterRemoveTile(st, tile);
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SetSignalsOnBothDir(tile, track);
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YapfNotifyTrackLayoutChange(tile, track);
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@ -1272,7 +1257,7 @@ static int32 RemoveRailroadStation(Station *st, TileIndex tile, uint32 flags)
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} while (--h);
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if (flags & DC_EXEC) {
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StationRect_AfterRemoveRect(st, st->train_tile, st->trainst_w, st->trainst_h);
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st->rect.AfterRemoveRect(st, st->train_tile, st->trainst_w, st->trainst_h);
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st->train_tile = 0;
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st->trainst_w = st->trainst_h = 0;
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@ -1405,7 +1390,7 @@ int32 CmdBuildRoadStop(TileIndex tile, uint32 flags, uint32 p1, uint32 p2)
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return_cmd_error(STR_3009_TOO_CLOSE_TO_ANOTHER_STATION);
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}
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if (!StationRect_BeforeAddTile(st, tile, RECT_MODE_TEST)) return CMD_ERROR;
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if (!st->rect.BeforeAddTile(tile, StationRect::ADD_TEST)) return CMD_ERROR;
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FindRoadStopSpot(type, st, &currstop, &prev);
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} else {
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@ -1443,7 +1428,7 @@ int32 CmdBuildRoadStop(TileIndex tile, uint32 flags, uint32 p1, uint32 p2)
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st->build_date = _date;
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StationRect_BeforeAddTile(st, tile, RECT_MODE_TRY);
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st->rect.BeforeAddTile(tile, StationRect::ADD_TRY);
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MakeRoadStop(tile, st->owner, st->index, type ? RS_TRUCK : RS_BUS, (DiagDirection)p1);
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@ -1494,7 +1479,7 @@ static int32 RemoveRoadStop(Station *st, uint32 flags, TileIndex tile)
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DeleteRoadStop(cur_stop);
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DoClearSquare(tile);
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StationRect_AfterRemoveTile(st, tile);
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st->rect.AfterRemoveTile(st, tile);
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UpdateStationVirtCoordDirty(st);
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DeleteStationIfEmpty(st);
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@ -1665,7 +1650,7 @@ int32 CmdBuildAirport(TileIndex tile, uint32 flags, uint32 p1, uint32 p2)
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if (st->owner != OWNER_NONE && st->owner != _current_player)
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return_cmd_error(STR_3009_TOO_CLOSE_TO_ANOTHER_STATION);
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if (!StationRect_BeforeAddRect(st, tile, w, h, RECT_MODE_TEST)) return CMD_ERROR;
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if (!st->rect.BeforeAddRect(tile, w, h, StationRect::ADD_TEST)) return CMD_ERROR;
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if (st->airport_tile != 0)
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return_cmd_error(STR_300D_TOO_CLOSE_TO_ANOTHER_AIRPORT);
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@ -1705,7 +1690,7 @@ int32 CmdBuildAirport(TileIndex tile, uint32 flags, uint32 p1, uint32 p2)
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st->build_date = _date;
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StationRect_BeforeAddRect(st, tile, w, h, RECT_MODE_TRY);
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st->rect.BeforeAddRect(tile, w, h, StationRect::ADD_TRY);
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/* if airport was demolished while planes were en-route to it, the
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* positions can no longer be the same (v->u.air.pos), since different
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@ -1771,7 +1756,7 @@ static int32 RemoveAirport(Station *st, uint32 flags)
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);
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}
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StationRect_AfterRemoveRect(st, tile, w, h);
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st->rect.AfterRemoveRect(st, tile, w, h);
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st->airport_tile = 0;
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st->facilities &= ~FACIL_AIRPORT;
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@ -1951,7 +1936,7 @@ int32 CmdBuildDock(TileIndex tile, uint32 flags, uint32 p1, uint32 p2)
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if (st->owner != OWNER_NONE && st->owner != _current_player)
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return_cmd_error(STR_3009_TOO_CLOSE_TO_ANOTHER_STATION);
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if (!StationRect_BeforeAddRect(st, tile, _dock_w_chk[direction], _dock_h_chk[direction], RECT_MODE_TEST)) return CMD_ERROR;
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if (!st->rect.BeforeAddRect(tile, _dock_w_chk[direction], _dock_h_chk[direction], StationRect::ADD_TEST)) return CMD_ERROR;
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if (st->dock_tile != 0) return_cmd_error(STR_304C_TOO_CLOSE_TO_ANOTHER_DOCK);
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} else {
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@ -1981,7 +1966,7 @@ int32 CmdBuildDock(TileIndex tile, uint32 flags, uint32 p1, uint32 p2)
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st->build_date = _date;
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StationRect_BeforeAddRect(st, tile, _dock_w_chk[direction], _dock_h_chk[direction], RECT_MODE_TRY);
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st->rect.BeforeAddRect(tile, _dock_w_chk[direction], _dock_h_chk[direction], StationRect::ADD_TRY);
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MakeDock(tile, st->owner, st->index, direction);
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@ -2012,8 +1997,8 @@ static int32 RemoveDock(Station *st, uint32 flags)
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DoClearSquare(tile1);
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MakeWater(tile2);
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StationRect_AfterRemoveTile(st, tile1);
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StationRect_AfterRemoveTile(st, tile2);
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st->rect.AfterRemoveTile(st, tile1);
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st->rect.AfterRemoveTile(st, tile2);
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MarkTileDirtyByTile(tile2);
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@ -2868,7 +2853,7 @@ void AfterLoadStations(void)
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for (tile = 0; tile < MapSize(); tile++) {
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if (GetTileType(tile) != MP_STATION) continue;
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st = GetStationByTile(tile);
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StationRect_BeforeAddTile(st, tile, RECT_MODE_FORCE);
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st->rect.BeforeAddTile(tile, StationRect::ADD_FORCE);
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}
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}
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@ -3098,125 +3083,3 @@ extern const ChunkHandler _station_chunk_handlers[] = {
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};
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static inline bool PtInRectXY(Rect *r, int x, int y)
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{
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return (r->left <= x && x <= r->right && r->top <= y && y <= r->bottom);
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}
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void StationRect_Init(Station *st)
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{
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Rect *r = &st->rect;
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r->left = r->top = r->right = r->bottom = 0;
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}
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static bool StationRect_IsEmpty(Station *st)
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{
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return (st->rect.left == 0 || st->rect.left > st->rect.right || st->rect.top > st->rect.bottom);
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}
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static bool StationRect_BeforeAddTile(Station *st, TileIndex tile, StationRectMode mode)
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{
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Rect *r = &st->rect;
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int x = TileX(tile);
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int y = TileY(tile);
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if (StationRect_IsEmpty(st)) {
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// we are adding the first station tile
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r->left = r->right = x;
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r->top = r->bottom = y;
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} else if (!PtInRectXY(r, x, y)) {
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// current rect is not empty and new point is outside this rect
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// make new spread-out rectangle
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Rect new_rect = {min(x, r->left), min(y, r->top), max(x, r->right), max(y, r->bottom)};
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// check new rect dimensions against preset max
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int w = new_rect.right - new_rect.left + 1;
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int h = new_rect.bottom - new_rect.top + 1;
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if (mode != RECT_MODE_FORCE && (w > _patches.station_spread || h > _patches.station_spread)) {
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assert(mode != RECT_MODE_TRY);
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_error_message = STR_306C_STATION_TOO_SPREAD_OUT;
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return false;
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}
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// spread-out ok, return true
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if (mode != RECT_MODE_TEST) {
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// we should update the station rect
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*r = new_rect;
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}
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} else {
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; // new point is inside the rect, we don't need to do anything
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}
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return true;
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}
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static bool StationRect_BeforeAddRect(Station *st, TileIndex tile, int w, int h, StationRectMode mode)
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{
|
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return StationRect_BeforeAddTile(st, tile, mode) && StationRect_BeforeAddTile(st, TILE_ADDXY(tile, w - 1, h - 1), mode);
|
||||
}
|
||||
|
||||
static inline bool ScanRectForStationTiles(StationID st_id, int left, int top, int right, int bottom)
|
||||
{
|
||||
TileIndex top_left = TileXY(left, top);
|
||||
int width = right - left + 1;
|
||||
int height = bottom - top + 1;
|
||||
BEGIN_TILE_LOOP(tile, width, height, top_left)
|
||||
if (IsTileType(tile, MP_STATION) && GetStationIndex(tile) == st_id) return true;
|
||||
END_TILE_LOOP(tile, width, height, top_left);
|
||||
return false;
|
||||
}
|
||||
|
||||
static bool StationRect_AfterRemoveTile(Station *st, TileIndex tile)
|
||||
{
|
||||
Rect *r = &st->rect;
|
||||
int x = TileX(tile);
|
||||
int y = TileY(tile);
|
||||
bool reduce_x, reduce_y;
|
||||
|
||||
// look if removed tile was on the bounding rect edge
|
||||
// and try to reduce the rect by this edge
|
||||
// do it until we have empty rect or nothing to do
|
||||
for (;;) {
|
||||
// check if removed tile is on rect edge
|
||||
bool left_edge = (x == r->left);
|
||||
bool right_edge = (x == r->right);
|
||||
bool top_edge = (y == r->top);
|
||||
bool bottom_edge = (y == r->bottom);
|
||||
// can we reduce the rect in either direction?
|
||||
reduce_x = ((left_edge || right_edge) && !ScanRectForStationTiles(st->index, x, r->top, x, r->bottom));
|
||||
reduce_y = ((top_edge || bottom_edge) && !ScanRectForStationTiles(st->index, r->left, y, r->right, y));
|
||||
if (!(reduce_x || reduce_y)) break; // nothing to do (can't reduce)
|
||||
if (reduce_x) {
|
||||
// reduce horizontally
|
||||
if (left_edge) {
|
||||
// move left edge right
|
||||
r->left = x = x + 1;
|
||||
} else {
|
||||
// move right edge left
|
||||
r->right = x = x - 1;
|
||||
}
|
||||
}
|
||||
if (reduce_y) {
|
||||
// reduce vertically
|
||||
if (top_edge) {
|
||||
// move top edge down
|
||||
r->top = y = y + 1;
|
||||
} else {
|
||||
// move bottom edge up
|
||||
r->bottom = y = y - 1;
|
||||
}
|
||||
}
|
||||
if (r->left > r->right || r->top > r->bottom) {
|
||||
// can't continue, if the remaining rectangle is empty
|
||||
StationRect_Init(st);
|
||||
return true; // empty remaining rect
|
||||
}
|
||||
}
|
||||
return false; // non-empty remaining rect
|
||||
}
|
||||
|
||||
static bool StationRect_AfterRemoveRect(Station *st, TileIndex tile, int w, int h)
|
||||
{
|
||||
bool empty;
|
||||
assert(PtInRectXY(&st->rect, TileX(tile), TileY(tile)));
|
||||
assert(PtInRectXY(&st->rect, TileX(tile) + w - 1, TileY(tile) + h - 1));
|
||||
empty = StationRect_AfterRemoveTile(st, tile);
|
||||
if (w != 1 || h != 1) empty = empty || StationRect_AfterRemoveTile(st, TILE_ADDXY(tile, w - 1, h - 1));
|
||||
return empty;
|
||||
}
|
||||
|
|
|
|||
Loading…
Reference in New Issue