(svn r15703) -Codechange: split Cmd* from waypoint.cpp to waypoint_cmd.cpp.
belugas
15 years ago
parent
0bb1fd18ad
commit
c540d40be1
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/* $Id$ */
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/** @file waypoint_cmp.cpp Command Handling for waypoints. */
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#include "stdafx.h"
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#include "command_func.h"
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#include "landscape.h"
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#include "economy_func.h"
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#include "bridge_map.h"
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#include "town.h"
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#include "waypoint.h"
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#include "yapf/yapf.h"
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#include "strings_func.h"
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#include "gfx_func.h"
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#include "functions.h"
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#include "window_func.h"
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#include "date_func.h"
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#include "vehicle_func.h"
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#include "string_func.h"
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#include "company_func.h"
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#include "newgrf_station.h"
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#include "oldpool_func.h"
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#include "viewport_func.h"
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#include "train.h"
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#include "table/strings.h"
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/**
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* Update the sign for the waypoint
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* @param wp Waypoint to update sign */
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void UpdateWaypointSign(Waypoint *wp)
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{
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Point pt = RemapCoords2(TileX(wp->xy) * TILE_SIZE, TileY(wp->xy) * TILE_SIZE);
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SetDParam(0, wp->index);
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UpdateViewportSignPos(&wp->sign, pt.x, pt.y - 0x20, STR_WAYPOINT_VIEWPORT);
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}
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/**
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* Redraw the sign of a waypoint
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* @param wp Waypoint to redraw sign */
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void RedrawWaypointSign(const Waypoint *wp)
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{
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MarkAllViewportsDirty(
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wp->sign.left - 6,
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wp->sign.top,
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wp->sign.left + (wp->sign.width_1 << 2) + 12,
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wp->sign.top + 48);
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}
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/**
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* Set the default name for a waypoint
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* @param wp Waypoint to work on
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*/
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static void MakeDefaultWaypointName(Waypoint *wp)
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{
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uint32 used = 0; // bitmap of used waypoint numbers, sliding window with 'next' as base
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uint32 next = 0; // first waypoint number in the bitmap
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WaypointID idx = 0; // index where we will stop
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wp->town_index = ClosestTownFromTile(wp->xy, UINT_MAX)->index;
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/* Find first unused waypoint number belonging to this town. This can never fail,
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* as long as there can be at most 65535 waypoints in total.
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*
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* This does 'n * m' search, but with 32bit 'used' bitmap, it needs at most 'n * (1 + ceil(m / 32))'
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* steps (n - number of waypoints in pool, m - number of waypoints near this town).
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* Usually, it needs only 'n' steps.
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*
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* If it wasn't using 'used' and 'idx', it would just search for increasing 'next',
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* but this way it is faster */
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WaypointID cid = 0; // current index, goes to GetWaypointPoolSize()-1, then wraps to 0
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do {
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Waypoint *lwp = GetWaypoint(cid);
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/* check only valid waypoints... */
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if (lwp->IsValid() && wp != lwp) {
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/* only waypoints with 'generic' name within the same city */
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if (lwp->name == NULL && lwp->town_index == wp->town_index) {
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/* if lwp->town_cn < next, uint will overflow to '+inf' */
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uint i = (uint)lwp->town_cn - next;
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if (i < 32) {
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SetBit(used, i); // update bitmap
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if (i == 0) {
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/* shift bitmap while the lowest bit is '1';
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* increase the base of the bitmap too */
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do {
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used >>= 1;
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next++;
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} while (HasBit(used, 0));
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/* when we are at 'idx' again at end of the loop and
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* 'next' hasn't changed, then no waypoint had town_cn == next,
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* so we can safely use it */
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idx = cid;
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}
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}
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}
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}
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cid++;
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if (cid == GetWaypointPoolSize()) cid = 0; // wrap to zero...
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} while (cid != idx);
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wp->town_cn = (uint16)next; // set index...
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wp->name = NULL; // ... and use generic name
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}
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/**
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* Find a deleted waypoint close to a tile.
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* @param tile to search from
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*/
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static Waypoint *FindDeletedWaypointCloseTo(TileIndex tile)
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{
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Waypoint *wp, *best = NULL;
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uint thres = 8;
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FOR_ALL_WAYPOINTS(wp) {
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if (wp->deleted && wp->owner == _current_company) {
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uint cur_dist = DistanceManhattan(tile, wp->xy);
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if (cur_dist < thres) {
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thres = cur_dist;
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best = wp;
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}
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}
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}
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return best;
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}
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/** Convert existing rail to waypoint. Eg build a waypoint station over
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* piece of rail
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* @param tile tile where waypoint will be built
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* @param flags type of operation
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* @param p1 graphics for waypoint type, 0 indicates standard graphics
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* @param p2 unused
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*
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* @todo When checking for the tile slope,
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* distingush between "Flat land required" and "land sloped in wrong direction"
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*/
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CommandCost CmdBuildTrainWaypoint(TileIndex tile, DoCommandFlag flags, uint32 p1, uint32 p2, const char *text)
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{
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Waypoint *wp;
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Slope tileh;
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Axis axis;
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/* if custom gfx are used, make sure it is within bounds */
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if (p1 >= GetNumCustomStations(STAT_CLASS_WAYP)) return CMD_ERROR;
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if (!IsTileType(tile, MP_RAILWAY) ||
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GetRailTileType(tile) != RAIL_TILE_NORMAL || (
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(axis = AXIS_X, GetTrackBits(tile) != TRACK_BIT_X) &&
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(axis = AXIS_Y, GetTrackBits(tile) != TRACK_BIT_Y)
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)) {
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return_cmd_error(STR_1005_NO_SUITABLE_RAILROAD_TRACK);
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}
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Owner owner = GetTileOwner(tile);
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if (!CheckOwnership(owner)) return CMD_ERROR;
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if (!EnsureNoVehicleOnGround(tile)) return CMD_ERROR;
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tileh = GetTileSlope(tile, NULL);
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if (tileh != SLOPE_FLAT &&
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(!_settings_game.construction.build_on_slopes || IsSteepSlope(tileh) || !(tileh & (0x3 << axis)) || !(tileh & ~(0x3 << axis)))) {
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return_cmd_error(STR_0007_FLAT_LAND_REQUIRED);
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}
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if (MayHaveBridgeAbove(tile) && IsBridgeAbove(tile)) return_cmd_error(STR_5007_MUST_DEMOLISH_BRIDGE_FIRST);
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/* Check if there is an already existing, deleted, waypoint close to us that we can reuse. */
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wp = FindDeletedWaypointCloseTo(tile);
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if (wp == NULL && !Waypoint::CanAllocateItem()) return CMD_ERROR;
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if (flags & DC_EXEC) {
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if (wp == NULL) {
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wp = new Waypoint(tile);
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wp->town_index = INVALID_TOWN;
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wp->name = NULL;
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wp->town_cn = 0;
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} else {
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/* Move existing (recently deleted) waypoint to the new location */
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/* First we update the destination for all vehicles that
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* have the old waypoint in their orders. */
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Vehicle *v;
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FOR_ALL_VEHICLES(v) {
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if (v->type == VEH_TRAIN &&
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v->First() == v &&
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v->current_order.IsType(OT_GOTO_WAYPOINT) &&
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v->dest_tile == wp->xy) {
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v->dest_tile = tile;
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}
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}
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RedrawWaypointSign(wp);
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wp->xy = tile;
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InvalidateWindowData(WC_WAYPOINT_VIEW, wp->index);
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}
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wp->owner = owner;
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const StationSpec *statspec;
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bool reserved = HasBit(GetTrackReservation(tile), AxisToTrack(axis));
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MakeRailWaypoint(tile, owner, axis, GetRailType(tile), wp->index);
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SetDepotWaypointReservation(tile, reserved);
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MarkTileDirtyByTile(tile);
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statspec = GetCustomStationSpec(STAT_CLASS_WAYP, p1);
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if (statspec != NULL) {
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wp->stat_id = p1;
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wp->grfid = statspec->grffile->grfid;
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wp->localidx = statspec->localidx;
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} else {
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/* Specified custom graphics do not exist, so use default. */
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wp->stat_id = 0;
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wp->grfid = 0;
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wp->localidx = 0;
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}
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wp->deleted = 0;
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wp->build_date = _date;
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if (wp->town_index == INVALID_TOWN) MakeDefaultWaypointName(wp);
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UpdateWaypointSign(wp);
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RedrawWaypointSign(wp);
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YapfNotifyTrackLayoutChange(tile, AxisToTrack(axis));
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}
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return CommandCost(EXPENSES_CONSTRUCTION, _price.build_train_depot);
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}
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/**
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* Remove a waypoint
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* @param tile from which to remove waypoint
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* @param flags type of operation
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* @param justremove will indicate if it is removed from rail or if rails are removed too
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* @return cost of operation or error
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*/
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CommandCost RemoveTrainWaypoint(TileIndex tile, DoCommandFlag flags, bool justremove)
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{
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Waypoint *wp;
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/* Make sure it's a waypoint */
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if (!IsRailWaypointTile(tile) ||
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(!CheckTileOwnership(tile) && _current_company != OWNER_WATER) ||
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!EnsureNoVehicleOnGround(tile)) {
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return CMD_ERROR;
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}
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if (flags & DC_EXEC) {
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Track track = GetRailWaypointTrack(tile);
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wp = GetWaypointByTile(tile);
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wp->deleted = 30; // let it live for this many days before we do the actual deletion.
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RedrawWaypointSign(wp);
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Vehicle *v = NULL;
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if (justremove) {
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TrackBits tracks = GetRailWaypointBits(tile);
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bool reserved = GetDepotWaypointReservation(tile);
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MakeRailNormal(tile, wp->owner, tracks, GetRailType(tile));
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if (reserved) SetTrackReservation(tile, tracks);
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MarkTileDirtyByTile(tile);
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} else {
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if (GetDepotWaypointReservation(tile)) {
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v = GetTrainForReservation(tile, track);
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if (v != NULL) FreeTrainTrackReservation(v);
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}
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DoClearSquare(tile);
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AddTrackToSignalBuffer(tile, track, wp->owner);
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}
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YapfNotifyTrackLayoutChange(tile, track);
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if (v != NULL) TryPathReserve(v, true);
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}
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return CommandCost(EXPENSES_CONSTRUCTION, _price.remove_train_depot);
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}
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/**
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* Delete a waypoint
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* @param tile tile where waypoint is to be deleted
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* @param flags type of operation
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* @param p1 unused
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* @param p2 unused
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* @return cost of operation or error
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*/
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CommandCost CmdRemoveTrainWaypoint(TileIndex tile, DoCommandFlag flags, uint32 p1, uint32 p2, const char *text)
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{
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return RemoveTrainWaypoint(tile, flags, true);
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}
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static bool IsUniqueWaypointName(const char *name)
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{
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const Waypoint *wp;
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FOR_ALL_WAYPOINTS(wp) {
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if (wp->name != NULL && strcmp(wp->name, name) == 0) return false;
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}
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return true;
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}
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/**
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* Rename a waypoint.
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* @param tile unused
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* @param flags type of operation
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* @param p1 id of waypoint
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* @param p2 unused
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* @return cost of operation or error
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*/
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CommandCost CmdRenameWaypoint(TileIndex tile, DoCommandFlag flags, uint32 p1, uint32 p2, const char *text)
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{
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if (!IsValidWaypointID(p1)) return CMD_ERROR;
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Waypoint *wp = GetWaypoint(p1);
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if (!CheckOwnership(wp->owner)) return CMD_ERROR;
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bool reset = StrEmpty(text);
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if (!reset) {
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if (strlen(text) >= MAX_LENGTH_WAYPOINT_NAME_BYTES) return CMD_ERROR;
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if (!IsUniqueWaypointName(text)) return_cmd_error(STR_NAME_MUST_BE_UNIQUE);
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}
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if (flags & DC_EXEC) {
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free(wp->name);
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if (reset) {
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MakeDefaultWaypointName(wp); // sets wp->name = NULL
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} else {
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wp->name = strdup(text);
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}
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UpdateWaypointSign(wp);
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MarkWholeScreenDirty();
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}
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return CommandCost();
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}
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