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diff --git a/src/object_cmd.cpp b/src/object_cmd.cpp
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+++ b/src/object_cmd.cpp
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+/* $Id$ */
+
+/*
+ * This file is part of OpenTTD.
+ * OpenTTD is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, version 2.
+ * OpenTTD is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
+ * See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with OpenTTD. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+/** @file object_cmd.cpp Handling of object tiles. */
+
+#include "stdafx.h"
+#include "landscape.h"
+#include "command_func.h"
+#include "viewport_func.h"
+#include "company_base.h"
+#include "town.h"
+#include "bridge_map.h"
+#include "genworld.h"
+#include "autoslope.h"
+#include "transparency.h"
+#include "functions.h"
+#include "window_func.h"
+#include "vehicle_func.h"
+#include "company_gui.h"
+#include "cheat_type.h"
+#include "landscape_type.h"
+#include "object.h"
+#include "cargopacket.h"
+#include "sprite.h"
+#include "core/random_func.hpp"
+#include "object_map.h"
+
+#include "table/strings.h"
+#include "table/sprites.h"
+#include "table/object_land.h"
+
+/* static */ const ObjectSpec *ObjectSpec::Get(ObjectType index)
+{
+ assert(index < OBJECT_MAX);
+ return &_original_objects[index];
+}
+
+/* static */ const ObjectSpec *ObjectSpec::GetByTile(TileIndex tile)
+{
+ return ObjectSpec::Get(GetObjectType(tile));
+}
+
+void BuildObject(ObjectType type, TileIndex tile, CompanyID owner, uint index)
+{
+ const ObjectSpec *spec = ObjectSpec::Get(type);
+
+ TileArea ta(tile, GB(spec->size, 0, 4), GB(spec->size, 4, 4));
+ TILE_AREA_LOOP(t, ta) {
+ TileIndex offset = t - tile;
+ MakeObject(t, type, owner, TileY(offset) << 4 | TileX(offset), index);
+ MarkTileDirtyByTile(t);
+ }
+}
+
+/**
+ * Increase the animation stage of a whole structure.
+ * @param northern The northern tile of the structure.
+ * @pre GetObjectOffset(northern) == 0
+ */
+void IncreaseAnimationStage(TileIndex northern)
+{
+ assert(GetObjectOffset(northern) == 0);
+ const ObjectSpec *spec = ObjectSpec::GetByTile(northern);
+
+ TileArea ta(northern, GB(spec->size, 0, 4), GB(spec->size, 4, 4));
+ TILE_AREA_LOOP(t, ta) {
+ SetObjectAnimationStage(t, GetObjectAnimationStage(t) + 1);
+ MarkTileDirtyByTile(t);
+ }
+}
+
+/** We encode the company HQ size in the animation stage. */
+#define GetCompanyHQSize GetObjectAnimationStage
+/** We encode the company HQ size in the animation stage. */
+#define IncreaseCompanyHQSize IncreaseAnimationStage
+
+void UpdateCompanyHQ(TileIndex tile, uint score)
+{
+ if (tile == INVALID_TILE) return;
+
+ byte val;
+ (val = 0, score < 170) ||
+ (val++, score < 350) ||
+ (val++, score < 520) ||
+ (val++, score < 720) ||
+ (val++, true);
+
+ while (GetCompanyHQSize(tile) < val) {
+ IncreaseCompanyHQSize(tile);
+ }
+}
+
+extern CommandCost CheckFlatLand(TileArea tile_area, DoCommandFlag flags);
+static CommandCost ClearTile_Object(TileIndex tile, DoCommandFlag flags);
+
+/**
+ * Build an object object
+ * @param tile tile where the object will be located
+ * @param flags type of operation
+ * @param p1 the object type to build
+ * @param p2 unused
+ * @param text unused
+ * @return the cost of this operation or an error
+ */
+CommandCost CmdBuildObject(TileIndex tile, DoCommandFlag flags, uint32 p1, uint32 p2, const char *text)
+{
+ CommandCost cost(EXPENSES_PROPERTY);
+
+ ObjectType type = (ObjectType)GB(p1, 0, 8);
+ if (type >= OBJECT_MAX) return CMD_ERROR;
+
+ const ObjectSpec *spec = ObjectSpec::Get(type);
+ if (spec->flags & OBJECT_FLAG_ONLY_IN_SCENEDIT && (_game_mode != GM_EDITOR || _current_company != OWNER_NONE)) return CMD_ERROR;
+ if (spec->flags & OBJECT_FLAG_ONLY_IN_GAME && (_game_mode != GM_NORMAL || _current_company > MAX_COMPANIES)) return CMD_ERROR;
+
+ int size_x = GB(spec->size, 0, 4);
+ int size_y = GB(spec->size, 4, 4);
+ TileArea ta(tile, size_x, size_y);
+
+ if (spec->flags & OBJECT_FLAG_REQUIRE_FLAT) {
+ TILE_AREA_LOOP(tile_cur, ta) {
+ if (GetTileSlope(tile, NULL) != SLOPE_FLAT) return_cmd_error(STR_ERROR_FLAT_LAND_REQUIRED);
+ }
+ }
+
+ /* If we require flat land, we've already tested that.
+ * So we only need to check for clear land. */
+ if (spec->flags & (OBJECT_FLAG_HAS_NO_FOUNDATION | OBJECT_FLAG_REQUIRE_FLAT)) {
+ TILE_AREA_LOOP(tile_cur, ta) {
+ cost.AddCost(DoCommand(tile, 0, 0, flags, CMD_LANDSCAPE_CLEAR));
+ }
+ } else {
+ cost.AddCost(CheckFlatLand(ta, flags));
+ }
+ if (cost.Failed()) return cost;
+
+ int hq_score = 0;
+ switch (type) {
+ case OBJECT_OWNED_LAND:
+ if (IsTileType(tile, MP_OBJECT) &&
+ IsTileOwner(tile, _current_company) &&
+ IsOwnedLand(tile)) {
+ return_cmd_error(STR_ERROR_YOU_ALREADY_OWN_IT);
+ }
+ break;
+
+ case OBJECT_HQ: {
+ Company *c = Company::Get(_current_company);
+ if (c->location_of_HQ != INVALID_TILE) {
+ /* We need to persuade a bit harder to remove the old HQ. */
+ _current_company = OWNER_WATER;
+ cost.AddCost(ClearTile_Object(c->location_of_HQ, flags));
+ _current_company = c->index;
+ }
+
+ if (flags & DC_EXEC) {
+ hq_score = UpdateCompanyRatingAndValue(c, false);
+ c->location_of_HQ = tile;
+ SetWindowDirty(WC_COMPANY, c->index);
+ }
+ break;
+ }
+
+ default: break;
+ }
+
+ if (flags & DC_EXEC) {
+ BuildObject(type, tile, _current_company);
+
+ /* Make sure the HQ starts at the right size. */
+ if (type == OBJECT_HQ) UpdateCompanyHQ(tile, hq_score);
+ }
+
+ cost.AddCost(ObjectSpec::Get(type)->GetBuildCost() * size_x * size_y);
+ return cost;
+}
+
+
+static Foundation GetFoundation_Object(TileIndex tile, Slope tileh);
+
+static void DrawTile_Object(TileInfo *ti)
+{
+ ObjectType type = GetObjectType(ti->tile);
+ const ObjectSpec *spec = ObjectSpec::Get(type);
+ if ((spec->flags & OBJECT_FLAG_HAS_NO_FOUNDATION) == 0) DrawFoundation(ti, GetFoundation_Object(ti->tile, ti->tileh));
+
+ const DrawTileSprites *dts = NULL;
+ Owner to = GetTileOwner(ti->tile);
+ PaletteID palette = to == OWNER_NONE ? PAL_NONE : COMPANY_SPRITE_COLOUR(to);
+
+ if (type == OBJECT_HQ) {
+ uint8 offset = GetObjectOffset(ti->tile);
+ dts = &_object_hq[GetCompanyHQSize(ti->tile) << 2 | GB(offset, 4, 1) << 1 | GB(offset, 0, 1)];
+ } else {
+ dts = &_objects[type];
+ }
+
+ if (spec->flags & OBJECT_FLAG_HAS_NO_FOUNDATION) {
+ /* If an object has no foundation, but tries to draw a (flat) ground
+ * type... we have to be nice and convert that for them. */
+ switch (dts->ground.sprite) {
+ case SPR_FLAT_BARE_LAND: DrawClearLandTile(ti, 0); break;
+ case SPR_FLAT_1_THIRD_GRASS_TILE: DrawClearLandTile(ti, 1); break;
+ case SPR_FLAT_2_THIRD_GRASS_TILE: DrawClearLandTile(ti, 2); break;
+ case SPR_FLAT_GRASS_TILE: DrawClearLandTile(ti, 3); break;
+ default: DrawGroundSprite(dts->ground.sprite, palette); break;
+ }
+ } else {
+ DrawGroundSprite(dts->ground.sprite, palette);
+ }
+
+ if (!IsInvisibilitySet(TO_STRUCTURES)) {
+ const DrawTileSeqStruct *dtss;
+ foreach_draw_tile_seq(dtss, dts->seq) {
+ AddSortableSpriteToDraw(
+ dtss->image.sprite, palette,
+ ti->x + dtss->delta_x, ti->y + dtss->delta_y,
+ dtss->size_x, dtss->size_y,
+ dtss->size_z, ti->z + dtss->delta_z,
+ IsTransparencySet(TO_STRUCTURES)
+ );
+ }
+ }
+
+ if (spec->flags & OBJECT_FLAG_ALLOW_UNDER_BRIDGE) DrawBridgeMiddle(ti);
+}
+
+static uint GetSlopeZ_Object(TileIndex tile, uint x, uint y)
+{
+ if (IsOwnedLand(tile)) {
+ uint z;
+ Slope tileh = GetTileSlope(tile, &z);
+
+ return z + GetPartialZ(x & 0xF, y & 0xF, tileh);
+ } else {
+ return GetTileMaxZ(tile);
+ }
+}
+
+static Foundation GetFoundation_Object(TileIndex tile, Slope tileh)
+{
+ return IsOwnedLand(tile) ? FOUNDATION_NONE : FlatteningFoundation(tileh);
+}
+
+static CommandCost ClearTile_Object(TileIndex tile, DoCommandFlag flags)
+{
+ ObjectType type = GetObjectType(tile);
+ const ObjectSpec *spec = ObjectSpec::Get(type);
+
+ /* Get to the northern most tile. */
+ tile -= GetObjectOffset(tile);
+
+ /* Water can remove everything! */
+ if (_current_company != OWNER_WATER) {
+ if ((spec->flags & OBJECT_FLAG_AUTOREMOVE) == 0 && flags & DC_AUTO) {
+ /* No automatic removal by overbuilding stuff. */
+ return_cmd_error(type == OBJECT_HQ ? STR_ERROR_COMPANY_HEADQUARTERS_IN : STR_ERROR_OBJECT_IN_THE_WAY);
+ } else if (_game_mode == GM_EDITOR) {
+ /* No further limitations for the editor. */
+ } else if (GetTileOwner(tile) == OWNER_NONE) {
+ /* Owned by nobody, so we can only remove it with brute force! */
+ if (!_cheats.magic_bulldozer.value) return CMD_ERROR;
+ } else if (CheckTileOwnership(tile).Failed()) {
+ /* We don't own it!. */
+ return_cmd_error(STR_ERROR_OWNED_BY);
+ } else if ((spec->flags & OBJECT_FLAG_AUTOREMOVE) == 0 && !_cheats.magic_bulldozer.value) {
+ /* In the game editor or with cheats we can remove, otherwise we can't. */
+ return CMD_ERROR;
+ }
+ }
+
+ int size_x = GB(spec->size, 0, 4);
+ int size_y = GB(spec->size, 4, 4);
+ TileArea ta(tile, size_x, size_y);
+
+ CommandCost cost(EXPENSES_CONSTRUCTION, spec->GetClearCost() * size_x * size_y);
+ if (spec->flags & OBJECT_FLAG_CLEAR_INCOME) cost.MultiplyCost(-1); // They get an income!
+
+ switch (type) {
+ case OBJECT_HQ: {
+ Company *c = Company::Get(GetTileOwner(tile));
+ if (flags & DC_EXEC) {
+ c->location_of_HQ = INVALID_TILE; // reset HQ position
+ SetWindowDirty(WC_COMPANY, c->index);
+ CargoPacket::InvalidateAllFrom(ST_HEADQUARTERS, c->index);
+ }
+
+ /* cost of relocating company is 1% of company value */
+ cost = CommandCost(EXPENSES_PROPERTY, CalculateCompanyValue(c) / 100);
+ break;
+ }
+
+ case OBJECT_STATUE:
+ if (flags & DC_EXEC) {
+ TownID town = GetStatueTownID(tile);
+ ClrBit(Town::Get(town)->statues, GetTileOwner(tile));
+ SetWindowDirty(WC_TOWN_AUTHORITY, town);
+ }
+ break;
+
+ default:
+ break;
+ }
+
+ if (flags & DC_EXEC) {
+ TILE_AREA_LOOP(tile_cur, ta) DoClearSquare(tile_cur);
+ }
+
+ return cost;
+}
+
+static void AddAcceptedCargo_Object(TileIndex tile, CargoArray &acceptance, uint32 *always_accepted)
+{
+ if (!IsCompanyHQ(tile)) return;
+
+ /* HQ accepts passenger and mail; but we have to divide the values
+ * between 4 tiles it occupies! */
+
+ /* HQ level (depends on company performance) in the range 1..5. */
+ uint level = GetCompanyHQSize(tile) + 1;
+
+ /* Top town building generates 10, so to make HQ interesting, the top
+ * type makes 20. */
+ acceptance[CT_PASSENGERS] += max(1U, level);
+ SetBit(*always_accepted, CT_PASSENGERS);
+
+ /* Top town building generates 4, HQ can make up to 8. The
+ * proportion passengers:mail is different because such a huge
+ * commercial building generates unusually high amount of mail
+ * correspondence per physical visitor. */
+ acceptance[CT_MAIL] += max(1U, level / 2);
+ SetBit(*always_accepted, CT_MAIL);
+}
+
+
+static void GetTileDesc_Object(TileIndex tile, TileDesc *td)
+{
+ td->str = ObjectSpec::GetByTile(tile)->name;
+ td->owner[0] = GetTileOwner(tile);
+}
+
+static void TileLoop_Object(TileIndex tile)
+{
+ if (!IsCompanyHQ(tile)) return;
+
+ /* HQ accepts passenger and mail; but we have to divide the values
+ * between 4 tiles it occupies! */
+
+ /* HQ level (depends on company performance) in the range 1..5. */
+ uint level = GetCompanyHQSize(tile) + 1;
+ assert(level < 6);
+
+ StationFinder stations(TileArea(tile, 2, 2));
+
+ uint r = Random();
+ /* Top town buildings generate 250, so the top HQ type makes 256. */
+ if (GB(r, 0, 8) < (256 / 4 / (6 - level))) {
+ uint amt = GB(r, 0, 8) / 8 / 4 + 1;
+ if (_economy.fluct <= 0) amt = (amt + 1) >> 1;
+ MoveGoodsToStation(CT_PASSENGERS, amt, ST_HEADQUARTERS, GetTileOwner(tile), stations.GetStations());
+ }
+
+ /* Top town building generates 90, HQ can make up to 196. The
+ * proportion passengers:mail is about the same as in the acceptance
+ * equations. */
+ if (GB(r, 8, 8) < (196 / 4 / (6 - level))) {
+ uint amt = GB(r, 8, 8) / 8 / 4 + 1;
+ if (_economy.fluct <= 0) amt = (amt + 1) >> 1;
+ MoveGoodsToStation(CT_MAIL, amt, ST_HEADQUARTERS, GetTileOwner(tile), stations.GetStations());
+ }
+}
+
+
+static TrackStatus GetTileTrackStatus_Object(TileIndex tile, TransportType mode, uint sub_mode, DiagDirection side)
+{
+ return 0;
+}
+
+static bool ClickTile_Object(TileIndex tile)
+{
+ if (!IsCompanyHQ(tile)) return false;
+
+ ShowCompany(GetTileOwner(tile));
+ return true;
+}
+
+
+/* checks, if a radio tower is within a 9x9 tile square around tile */
+static bool IsRadioTowerNearby(TileIndex tile)
+{
+ TileIndex tile_s = tile - TileDiffXY(min(TileX(tile), 4U), min(TileY(tile), 4U));
+ uint w = min(TileX(tile), 4U) + 1 + min(MapMaxX() - TileX(tile), 4U);
+ uint h = min(TileY(tile), 4U) + 1 + min(MapMaxY() - TileY(tile), 4U);
+
+ TILE_LOOP(tile, w, h, tile_s) {
+ if (IsTransmitterTile(tile)) return true;
+ }
+
+ return false;
+}
+
+void GenerateObjects()
+{
+ if (_settings_game.game_creation.landscape == LT_TOYLAND) return;
+
+ /* add radio tower */
+ int radiotower_to_build = ScaleByMapSize(15); // maximum number of radio towers on the map
+ int lighthouses_to_build = _settings_game.game_creation.landscape == LT_TROPIC ? 0 : ScaleByMapSize1D((Random() & 3) + 7);
+
+ /* Scale the amount of lighthouses with the amount of land at the borders. */
+ if (_settings_game.construction.freeform_edges && lighthouses_to_build != 0) {
+ uint num_water_tiles = 0;
+ for (uint x = 0; x < MapMaxX(); x++) {
+ if (IsTileType(TileXY(x, 1), MP_WATER)) num_water_tiles++;
+ if (IsTileType(TileXY(x, MapMaxY() - 1), MP_WATER)) num_water_tiles++;
+ }
+ for (uint y = 1; y < MapMaxY() - 1; y++) {
+ if (IsTileType(TileXY(1, y), MP_WATER)) num_water_tiles++;
+ if (IsTileType(TileXY(MapMaxX() - 1, y), MP_WATER)) num_water_tiles++;
+ }
+ /* The -6 is because the top borders are MP_VOID (-2) and all corners
+ * are counted twice (-4). */
+ lighthouses_to_build = lighthouses_to_build * num_water_tiles / (2 * MapMaxY() + 2 * MapMaxX() - 6);
+ }
+
+ SetGeneratingWorldProgress(GWP_OBJECT, radiotower_to_build + lighthouses_to_build);
+
+ for (uint i = ScaleByMapSize(1000); i != 0; i--) {
+ TileIndex tile = RandomTile();
+
+ uint h;
+ if (IsTileType(tile, MP_CLEAR) && GetTileSlope(tile, &h) == SLOPE_FLAT && h >= TILE_HEIGHT * 4 && !IsBridgeAbove(tile)) {
+ if (IsRadioTowerNearby(tile)) continue;
+
+ BuildObject(OBJECT_TRANSMITTER, tile);
+ IncreaseGeneratingWorldProgress(GWP_OBJECT);
+ if (--radiotower_to_build == 0) break;
+ }
+ }
+
+ /* add lighthouses */
+ uint maxx = MapMaxX();
+ uint maxy = MapMaxY();
+ for (int loop_count = 0; loop_count < 1000 && lighthouses_to_build != 0; loop_count++) {
+ uint r = Random();
+
+ /* Scatter the lighthouses more evenly around the perimeter */
+ int perimeter = (GB(r, 16, 16) % (2 * (maxx + maxy))) - maxy;
+ DiagDirection dir;
+ for (dir = DIAGDIR_NE; perimeter > 0; dir++) {
+ perimeter -= (DiagDirToAxis(dir) == AXIS_X) ? maxx : maxy;
+ }
+
+ TileIndex tile;
+ switch (dir) {
+ default:
+ case DIAGDIR_NE: tile = TileXY(maxx - 1, r % maxy); break;
+ case DIAGDIR_SE: tile = TileXY(r % maxx, 1); break;
+ case DIAGDIR_SW: tile = TileXY(1, r % maxy); break;
+ case DIAGDIR_NW: tile = TileXY(r % maxx, maxy - 1); break;
+ }
+
+ /* Only build lighthouses at tiles where the border is sea. */
+ if (!IsTileType(tile, MP_WATER)) continue;
+
+ for (int j = 0; j < 19; j++) {
+ uint h;
+ if (IsTileType(tile, MP_CLEAR) && GetTileSlope(tile, &h) == SLOPE_FLAT && h <= TILE_HEIGHT * 2 && !IsBridgeAbove(tile)) {
+ BuildObject(OBJECT_LIGHTHOUSE, tile);
+ IncreaseGeneratingWorldProgress(GWP_OBJECT);
+ lighthouses_to_build--;
+ assert(tile < MapSize());
+ break;
+ }
+ tile = AddTileIndexDiffCWrap(tile, TileIndexDiffCByDiagDir(dir));
+ if (tile == INVALID_TILE) break;
+ }
+ }
+}
+
+static void ChangeTileOwner_Object(TileIndex tile, Owner old_owner, Owner new_owner)
+{
+ if (!IsTileOwner(tile, old_owner)) return;
+
+ if (IsOwnedLand(tile) && new_owner != INVALID_OWNER) {
+ SetTileOwner(tile, new_owner);
+ } else if (IsStatueTile(tile)) {
+ TownID town = GetStatueTownID(tile);
+ Town *t = Town::Get(town);
+ ClrBit(t->statues, old_owner);
+ if (new_owner != INVALID_OWNER && !HasBit(t->statues, new_owner)) {
+ /* Transfer ownership to the new company */
+ SetBit(t->statues, new_owner);
+ SetTileOwner(tile, new_owner);
+ } else {
+ DoClearSquare(tile);
+ }
+
+ SetWindowDirty(WC_TOWN_AUTHORITY, town);
+ } else {
+ DoClearSquare(tile);
+ }
+}
+
+static CommandCost TerraformTile_Object(TileIndex tile, DoCommandFlag flags, uint z_new, Slope tileh_new)
+{
+ ObjectType type = GetObjectType(tile);
+ const ObjectSpec *spec = ObjectSpec::Get(type);
+
+ if (spec->flags & OBJECT_FLAG_REQUIRE_FLAT) {
+ /* If a flat tile is required by the object, then terraforming is never good. */
+ return DoCommand(tile, 0, 0, flags, CMD_LANDSCAPE_CLEAR);
+ }
+
+ if (IsOwnedLand(tile)) {
+ /* Owned land remains unsold */
+ CommandCost ret = CheckTileOwnership(tile);
+ if (ret.Succeeded()) return CommandCost();
+ } else if (AutoslopeEnabled()) {
+ if (!IsSteepSlope(tileh_new) && (z_new + GetSlopeMaxZ(tileh_new) == GetTileMaxZ(tile))) return CommandCost(EXPENSES_CONSTRUCTION, _price[PR_BUILD_FOUNDATION]);
+ }
+
+ return DoCommand(tile, 0, 0, flags, CMD_LANDSCAPE_CLEAR);
+}
+
+extern const TileTypeProcs _tile_type_object_procs = {
+ DrawTile_Object, // draw_tile_proc
+ GetSlopeZ_Object, // get_slope_z_proc
+ ClearTile_Object, // clear_tile_proc
+ AddAcceptedCargo_Object, // add_accepted_cargo_proc
+ GetTileDesc_Object, // get_tile_desc_proc
+ GetTileTrackStatus_Object, // get_tile_track_status_proc
+ ClickTile_Object, // click_tile_proc
+ NULL, // animate_tile_proc
+ TileLoop_Object, // tile_loop_clear
+ ChangeTileOwner_Object, // change_tile_owner_clear
+ NULL, // add_produced_cargo_proc
+ NULL, // vehicle_enter_tile_proc
+ GetFoundation_Object, // get_foundation_proc
+ TerraformTile_Object, // terraform_tile_proc
+};