disaster_cmd.cpp

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00001 /* $Id: disaster_cmd.cpp 17346 2009-09-01 13:16:53Z rubidium $ */
00002 
00019 #include "stdafx.h"
00020 #include "landscape.h"
00021 
00022 #include "industry_map.h"
00023 #include "station_map.h"
00024 #include "command_func.h"
00025 #include "news_func.h"
00026 #include "town.h"
00027 #include "company_func.h"
00028 #include "variables.h"
00029 #include "strings_func.h"
00030 #include "date_func.h"
00031 #include "functions.h"
00032 #include "vehicle_func.h"
00033 #include "sound_func.h"
00034 #include "effectvehicle_func.h"
00035 #include "roadveh.h"
00036 #include "ai/ai.hpp"
00037 
00038 #include "table/strings.h"
00039 #include "table/sprites.h"
00040 
00041 enum DisasterSubType {
00042   ST_ZEPPELINER,
00043   ST_ZEPPELINER_SHADOW,
00044   ST_SMALL_UFO,
00045   ST_SMALL_UFO_SHADOW,
00046   ST_AIRPLANE,
00047   ST_AIRPLANE_SHADOW,
00048   ST_HELICOPTER,
00049   ST_HELICOPTER_SHADOW,
00050   ST_HELICOPTER_ROTORS,
00051   ST_BIG_UFO,
00052   ST_BIG_UFO_SHADOW,
00053   ST_BIG_UFO_DESTROYER,
00054   ST_BIG_UFO_DESTROYER_SHADOW,
00055   ST_SMALL_SUBMARINE,
00056   ST_BIG_SUBMARINE,
00057 };
00058 
00059 static void DisasterClearSquare(TileIndex tile)
00060 {
00061   if (!EnsureNoVehicleOnGround(tile)) return;
00062 
00063   switch (GetTileType(tile)) {
00064     case MP_RAILWAY:
00065       if (IsHumanCompany(GetTileOwner(tile)) && !IsRailWaypoint(tile)) {
00066         CompanyID old_company = _current_company;
00067         _current_company = OWNER_WATER;
00068         DoCommand(tile, 0, 0, DC_EXEC, CMD_LANDSCAPE_CLEAR);
00069         _current_company = old_company;
00070 
00071         /* update signals in buffer */
00072         UpdateSignalsInBuffer();
00073       }
00074       break;
00075 
00076     case MP_HOUSE: {
00077       CompanyID old_company = _current_company;
00078       _current_company = OWNER_NONE;
00079       DoCommand(tile, 0, 0, DC_EXEC, CMD_LANDSCAPE_CLEAR);
00080       _current_company = old_company;
00081       break;
00082     }
00083 
00084     case MP_TREES:
00085     case MP_CLEAR:
00086       DoClearSquare(tile);
00087       break;
00088 
00089     default:
00090       break;
00091   }
00092 }
00093 
00094 static const SpriteID _disaster_images_1[] = {SPR_BLIMP, SPR_BLIMP, SPR_BLIMP, SPR_BLIMP, SPR_BLIMP, SPR_BLIMP, SPR_BLIMP, SPR_BLIMP};
00095 static const SpriteID _disaster_images_2[] = {SPR_UFO_SMALL_SCOUT, SPR_UFO_SMALL_SCOUT, SPR_UFO_SMALL_SCOUT, SPR_UFO_SMALL_SCOUT, SPR_UFO_SMALL_SCOUT, SPR_UFO_SMALL_SCOUT, SPR_UFO_SMALL_SCOUT, SPR_UFO_SMALL_SCOUT};
00096 static const SpriteID _disaster_images_3[] = {SPR_F_15, SPR_F_15, SPR_F_15, SPR_F_15, SPR_F_15, SPR_F_15, SPR_F_15, SPR_F_15};
00097 static const SpriteID _disaster_images_4[] = {SPR_SUB_SMALL_NE, SPR_SUB_SMALL_NE, SPR_SUB_SMALL_SE, SPR_SUB_SMALL_SE, SPR_SUB_SMALL_SW, SPR_SUB_SMALL_SW, SPR_SUB_SMALL_NW, SPR_SUB_SMALL_NW};
00098 static const SpriteID _disaster_images_5[] = {SPR_SUB_LARGE_NE, SPR_SUB_LARGE_NE, SPR_SUB_LARGE_SE, SPR_SUB_LARGE_SE, SPR_SUB_LARGE_SW, SPR_SUB_LARGE_SW, SPR_SUB_LARGE_NW, SPR_SUB_LARGE_NW};
00099 static const SpriteID _disaster_images_6[] = {SPR_UFO_HARVESTER, SPR_UFO_HARVESTER, SPR_UFO_HARVESTER, SPR_UFO_HARVESTER, SPR_UFO_HARVESTER, SPR_UFO_HARVESTER, SPR_UFO_HARVESTER, SPR_UFO_HARVESTER};
00100 static const SpriteID _disaster_images_7[] = {SPR_XCOM_SKYRANGER, SPR_XCOM_SKYRANGER, SPR_XCOM_SKYRANGER, SPR_XCOM_SKYRANGER, SPR_XCOM_SKYRANGER, SPR_XCOM_SKYRANGER, SPR_XCOM_SKYRANGER, SPR_XCOM_SKYRANGER};
00101 static const SpriteID _disaster_images_8[] = {SPR_AH_64A, SPR_AH_64A, SPR_AH_64A, SPR_AH_64A, SPR_AH_64A, SPR_AH_64A, SPR_AH_64A, SPR_AH_64A};
00102 static const SpriteID _disaster_images_9[] = {SPR_ROTOR_MOVING_1, SPR_ROTOR_MOVING_1, SPR_ROTOR_MOVING_1, SPR_ROTOR_MOVING_1, SPR_ROTOR_MOVING_1, SPR_ROTOR_MOVING_1, SPR_ROTOR_MOVING_1, SPR_ROTOR_MOVING_1};
00103 
00104 static const SpriteID * const _disaster_images[] = {
00105   _disaster_images_1, _disaster_images_1,                     
00106   _disaster_images_2, _disaster_images_2,                     
00107   _disaster_images_3, _disaster_images_3,                     
00108   _disaster_images_8, _disaster_images_8, _disaster_images_9, 
00109   _disaster_images_6, _disaster_images_6,                     
00110   _disaster_images_7, _disaster_images_7,                     
00111   _disaster_images_4, _disaster_images_5,                     
00112 };
00113 
00114 static void DisasterVehicleUpdateImage(Vehicle *v)
00115 {
00116   SpriteID img = v->u.disaster.image_override;
00117   if (img == 0) img = _disaster_images[v->subtype][v->direction];
00118   v->cur_image = img;
00119 }
00120 
00123 static void InitializeDisasterVehicle(Vehicle *v, int x, int y, byte z, Direction direction, byte subtype)
00124 {
00125   v->x_pos = x;
00126   v->y_pos = y;
00127   v->z_pos = z;
00128   v->tile = TileVirtXY(x, y);
00129   v->direction = direction;
00130   v->subtype = subtype;
00131   v->UpdateDeltaXY(INVALID_DIR);
00132   v->owner = OWNER_NONE;
00133   v->vehstatus = VS_UNCLICKABLE;
00134   v->u.disaster.image_override = 0;
00135   v->current_order.Free();
00136 
00137   DisasterVehicleUpdateImage(v);
00138   VehicleMove(v, false);
00139   MarkSingleVehicleDirty(v);
00140 }
00141 
00142 static void SetDisasterVehiclePos(Vehicle *v, int x, int y, byte z)
00143 {
00144   Vehicle *u;
00145 
00146   v->x_pos = x;
00147   v->y_pos = y;
00148   v->z_pos = z;
00149   v->tile = TileVirtXY(x, y);
00150 
00151   DisasterVehicleUpdateImage(v);
00152   VehicleMove(v, true);
00153 
00154   if ((u = v->Next()) != NULL) {
00155     int safe_x = Clamp(x, 0, MapMaxX() * TILE_SIZE);
00156     int safe_y = Clamp(y - 1, 0, MapMaxY() * TILE_SIZE);
00157 
00158     u->x_pos = x;
00159     u->y_pos = y - 1 - (max(z - GetSlopeZ(safe_x, safe_y), 0U) >> 3);
00160     safe_y = Clamp(u->y_pos, 0, MapMaxY() * TILE_SIZE);
00161     u->z_pos = GetSlopeZ(safe_x, safe_y);
00162     u->direction = v->direction;
00163 
00164     DisasterVehicleUpdateImage(u);
00165     VehicleMove(u, true);
00166 
00167     if ((u = u->Next()) != NULL) {
00168       u->x_pos = x;
00169       u->y_pos = y;
00170       u->z_pos = z + 5;
00171       VehicleMove(u, true);
00172     }
00173   }
00174 }
00175 
00184 static void DisasterTick_Zeppeliner(Vehicle *v)
00185 {
00186   Station *st;
00187   int x, y;
00188   byte z;
00189   TileIndex tile;
00190 
00191   v->tick_counter++;
00192 
00193   if (v->current_order.GetDestination() < 2) {
00194     if (HasBit(v->tick_counter, 0)) return;
00195 
00196     GetNewVehiclePosResult gp = GetNewVehiclePos(v);
00197 
00198     SetDisasterVehiclePos(v, gp.x, gp.y, v->z_pos);
00199 
00200     if (v->current_order.GetDestination() == 1) {
00201       if (++v->age == 38) {
00202         v->current_order.SetDestination(2);
00203         v->age = 0;
00204       }
00205 
00206       if (GB(v->tick_counter, 0, 3) == 0) CreateEffectVehicleRel(v, 0, -17, 2, EV_SMOKE);
00207 
00208     } else if (v->current_order.GetDestination() == 0) {
00209       tile = v->tile;
00210 
00211       if (IsValidTile(tile) &&
00212           IsTileType(tile, MP_STATION) &&
00213           IsAirport(tile)) {
00214         v->current_order.SetDestination(1);
00215         v->age = 0;
00216 
00217         SetDParam(0, GetStationIndex(tile));
00218         AddNewsItem(STR_B000_ZEPPELIN_DISASTER_AT,
00219           NS_ACCIDENT_VEHICLE,
00220           v->index,
00221           0);
00222         AI::NewEvent(GetTileOwner(tile), new AIEventDisasterZeppelinerCrashed(GetStationIndex(tile)));
00223       }
00224     }
00225 
00226     if (v->y_pos >= ((int)MapSizeY() + 9) * TILE_SIZE - 1) delete v;
00227     return;
00228   }
00229 
00230   if (v->current_order.GetDestination() > 2) {
00231     if (++v->age <= 13320) return;
00232 
00233     tile = v->tile;
00234 
00235     if (IsValidTile(tile) &&
00236         IsTileType(tile, MP_STATION) &&
00237         IsAirport(tile)) {
00238       st = GetStationByTile(tile);
00239       CLRBITS(st->airport_flags, RUNWAY_IN_block);
00240       AI::NewEvent(GetTileOwner(tile), new AIEventDisasterZeppelinerCleared(st->index));
00241     }
00242 
00243     SetDisasterVehiclePos(v, v->x_pos, v->y_pos, v->z_pos);
00244     delete v;
00245     return;
00246   }
00247 
00248   x = v->x_pos;
00249   y = v->y_pos;
00250   z = GetSlopeZ(x, y);
00251   if (z < v->z_pos) z = v->z_pos - 1;
00252   SetDisasterVehiclePos(v, x, y, z);
00253 
00254   if (++v->age == 1) {
00255     CreateEffectVehicleRel(v, 0, 7, 8, EV_EXPLOSION_LARGE);
00256     SndPlayVehicleFx(SND_12_EXPLOSION, v);
00257     v->u.disaster.image_override = SPR_BLIMP_CRASHING;
00258   } else if (v->age == 70) {
00259     v->u.disaster.image_override = SPR_BLIMP_CRASHED;
00260   } else if (v->age <= 300) {
00261     if (GB(v->tick_counter, 0, 3) == 0) {
00262       uint32 r = Random();
00263 
00264       CreateEffectVehicleRel(v,
00265         GB(r, 0, 4) - 7,
00266         GB(r, 4, 4) - 7,
00267         GB(r, 8, 3) + 5,
00268         EV_EXPLOSION_SMALL);
00269     }
00270   } else if (v->age == 350) {
00271     v->current_order.SetDestination(3);
00272     v->age = 0;
00273   }
00274 
00275   tile = v->tile;
00276   if (IsValidTile(tile) &&
00277       IsTileType(tile, MP_STATION) &&
00278       IsAirport(tile)) {
00279     st = GetStationByTile(tile);
00280     SETBITS(st->airport_flags, RUNWAY_IN_block);
00281   }
00282 }
00283 
00290 static void DisasterTick_Ufo(Vehicle *v)
00291 {
00292   Vehicle *u;
00293   uint dist;
00294   byte z;
00295 
00296   v->u.disaster.image_override = (HasBit(++v->tick_counter, 3)) ? SPR_UFO_SMALL_SCOUT_DARKER : SPR_UFO_SMALL_SCOUT;
00297 
00298   if (v->current_order.GetDestination() == 0) {
00299     /* Fly around randomly */
00300     int x = TileX(v->dest_tile) * TILE_SIZE;
00301     int y = TileY(v->dest_tile) * TILE_SIZE;
00302     if (Delta(x, v->x_pos) + Delta(y, v->y_pos) >= TILE_SIZE) {
00303       v->direction = GetDirectionTowards(v, x, y);
00304       GetNewVehiclePosResult gp = GetNewVehiclePos(v);
00305       SetDisasterVehiclePos(v, gp.x, gp.y, v->z_pos);
00306       return;
00307     }
00308     if (++v->age < 6) {
00309       v->dest_tile = RandomTile();
00310       return;
00311     }
00312     v->current_order.SetDestination(1);
00313 
00314     FOR_ALL_VEHICLES(u) {
00315       if (u->type == VEH_ROAD && IsRoadVehFront(u)) {
00316         v->dest_tile = u->index;
00317         v->age = 0;
00318         return;
00319       }
00320     }
00321 
00322     delete v;
00323   } else {
00324     /* Target a vehicle */
00325     u = GetVehicle(v->dest_tile);
00326     assert(u->type == VEH_ROAD && IsRoadVehFront(u));
00327 
00328     dist = Delta(v->x_pos, u->x_pos) + Delta(v->y_pos, u->y_pos);
00329 
00330     if (dist < TILE_SIZE && !(u->vehstatus & VS_HIDDEN) && u->breakdown_ctr == 0) {
00331       u->breakdown_ctr = 3;
00332       u->breakdown_delay = 140;
00333     }
00334 
00335     v->direction = GetDirectionTowards(v, u->x_pos, u->y_pos);
00336     GetNewVehiclePosResult gp = GetNewVehiclePos(v);
00337 
00338     z = v->z_pos;
00339     if (dist <= TILE_SIZE && z > u->z_pos) z--;
00340     SetDisasterVehiclePos(v, gp.x, gp.y, z);
00341 
00342     if (z <= u->z_pos && (u->vehstatus & VS_HIDDEN) == 0) {
00343       v->age++;
00344       if (u->u.road.crashed_ctr == 0) {
00345         u->u.road.crashed_ctr++;
00346 
00347         AddNewsItem(STR_B001_ROAD_VEHICLE_DESTROYED,
00348           NS_ACCIDENT_VEHICLE,
00349           u->index,
00350           0);
00351 
00352         AI::NewEvent(u->owner, new AIEventVehicleCrashed(u->index, u->tile, AIEventVehicleCrashed::CRASH_RV_UFO));
00353 
00354         for (Vehicle *w = u; w != NULL; w = w->Next()) {
00355           w->vehstatus |= VS_CRASHED;
00356           MarkSingleVehicleDirty(w);
00357         }
00358       }
00359     }
00360 
00361     /* Destroy? */
00362     if (v->age > 50) {
00363       CreateEffectVehicleRel(v, 0, 7, 8, EV_EXPLOSION_LARGE);
00364       SndPlayVehicleFx(SND_12_EXPLOSION, v);
00365       delete v;
00366     }
00367   }
00368 }
00369 
00370 static void DestructIndustry(Industry *i)
00371 {
00372   TileIndex tile;
00373 
00374   for (tile = 0; tile != MapSize(); tile++) {
00375     if (IsTileType(tile, MP_INDUSTRY) && GetIndustryIndex(tile) == i->index) {
00376       ResetIndustryConstructionStage(tile);
00377       MarkTileDirtyByTile(tile);
00378     }
00379   }
00380 }
00381 
00390 static void DisasterTick_Airplane(Vehicle *v)
00391 {
00392   v->tick_counter++;
00393   v->u.disaster.image_override =
00394     (v->current_order.GetDestination() == 1 && HasBit(v->tick_counter, 2)) ? SPR_F_15_FIRING : 0;
00395 
00396   GetNewVehiclePosResult gp = GetNewVehiclePos(v);
00397   SetDisasterVehiclePos(v, gp.x, gp.y, v->z_pos);
00398 
00399   if (gp.x < (-10 * TILE_SIZE)) {
00400     delete v;
00401     return;
00402   }
00403 
00404   if (v->current_order.GetDestination() == 2) {
00405     if (GB(v->tick_counter, 0, 2) == 0) {
00406       Industry *i = GetIndustry(v->dest_tile);
00407       int x = TileX(i->xy) * TILE_SIZE;
00408       int y = TileY(i->xy) * TILE_SIZE;
00409       uint32 r = Random();
00410 
00411       CreateEffectVehicleAbove(
00412         GB(r,  0, 6) + x,
00413         GB(r,  6, 6) + y,
00414         GB(r, 12, 4),
00415         EV_EXPLOSION_SMALL);
00416 
00417       if (++v->age >= 55) v->current_order.SetDestination(3);
00418     }
00419   } else if (v->current_order.GetDestination() == 1) {
00420     if (++v->age == 112) {
00421       Industry *i;
00422 
00423       v->current_order.SetDestination(2);
00424       v->age = 0;
00425 
00426       i = GetIndustry(v->dest_tile);
00427       DestructIndustry(i);
00428 
00429       SetDParam(0, i->town->index);
00430       AddNewsItem(STR_B002_OIL_REFINERY_EXPLOSION, NS_ACCIDENT_TILE, i->xy, 0);
00431       SndPlayTileFx(SND_12_EXPLOSION, i->xy);
00432     }
00433   } else if (v->current_order.GetDestination() == 0) {
00434     int x, y;
00435     TileIndex tile;
00436     uint ind;
00437 
00438     x = v->x_pos - (15 * TILE_SIZE);
00439     y = v->y_pos;
00440 
00441     if ( (uint)x > MapMaxX() * TILE_SIZE - 1) return;
00442 
00443     tile = TileVirtXY(x, y);
00444     if (!IsTileType(tile, MP_INDUSTRY)) return;
00445 
00446     ind = GetIndustryIndex(tile);
00447     v->dest_tile = ind;
00448 
00449     if (GetIndustrySpec(GetIndustry(ind)->type)->behaviour & INDUSTRYBEH_AIRPLANE_ATTACKS) {
00450       v->current_order.SetDestination(1);
00451       v->age = 0;
00452     }
00453   }
00454 }
00455 
00463 static void DisasterTick_Helicopter(Vehicle *v)
00464 {
00465   v->tick_counter++;
00466   v->u.disaster.image_override =
00467     (v->current_order.GetDestination() == 1 && HasBit(v->tick_counter, 2)) ? SPR_AH_64A_FIRING : 0;
00468 
00469   GetNewVehiclePosResult gp = GetNewVehiclePos(v);
00470   SetDisasterVehiclePos(v, gp.x, gp.y, v->z_pos);
00471 
00472   if (gp.x > (int)MapSizeX() * TILE_SIZE + 9 * TILE_SIZE - 1) {
00473     delete v;
00474     return;
00475   }
00476 
00477   if (v->current_order.GetDestination() == 2) {
00478     if (GB(v->tick_counter, 0, 2) == 0) {
00479       Industry *i = GetIndustry(v->dest_tile);
00480       int x = TileX(i->xy) * TILE_SIZE;
00481       int y = TileY(i->xy) * TILE_SIZE;
00482       uint32 r = Random();
00483 
00484       CreateEffectVehicleAbove(
00485         GB(r,  0, 6) + x,
00486         GB(r,  6, 6) + y,
00487         GB(r, 12, 4),
00488         EV_EXPLOSION_SMALL);
00489 
00490       if (++v->age >= 55) v->current_order.SetDestination(3);
00491     }
00492   } else if (v->current_order.GetDestination() == 1) {
00493     if (++v->age == 112) {
00494       Industry *i;
00495 
00496       v->current_order.SetDestination(2);
00497       v->age = 0;
00498 
00499       i = GetIndustry(v->dest_tile);
00500       DestructIndustry(i);
00501 
00502       SetDParam(0, i->town->index);
00503       AddNewsItem(STR_B003_FACTORY_DESTROYED_IN_SUSPICIOUS, NS_ACCIDENT_TILE, i->xy, 0);
00504       SndPlayTileFx(SND_12_EXPLOSION, i->xy);
00505     }
00506   } else if (v->current_order.GetDestination() == 0) {
00507     int x, y;
00508     TileIndex tile;
00509     uint ind;
00510 
00511     x = v->x_pos + (15 * TILE_SIZE);
00512     y = v->y_pos;
00513 
00514     if ( (uint)x > MapMaxX() * TILE_SIZE - 1) return;
00515 
00516     tile = TileVirtXY(x, y);
00517     if (!IsTileType(tile, MP_INDUSTRY)) return;
00518 
00519     ind = GetIndustryIndex(tile);
00520     v->dest_tile = ind;
00521 
00522     if (GetIndustrySpec(GetIndustry(ind)->type)->behaviour & INDUSTRYBEH_CHOPPER_ATTACKS) {
00523       v->current_order.SetDestination(1);
00524       v->age = 0;
00525     }
00526   }
00527 }
00528 
00530 static void DisasterTick_Helicopter_Rotors(Vehicle *v)
00531 {
00532   v->tick_counter++;
00533   if (HasBit(v->tick_counter, 0)) return;
00534 
00535   if (++v->cur_image > SPR_ROTOR_MOVING_3) v->cur_image = SPR_ROTOR_MOVING_1;
00536 
00537   VehicleMove(v, true);
00538 }
00539 
00546 static void DisasterTick_Big_Ufo(Vehicle *v)
00547 {
00548   byte z;
00549   Town *t;
00550   TileIndex tile;
00551   TileIndex tile_org;
00552 
00553   v->tick_counter++;
00554 
00555   if (v->current_order.GetDestination() == 1) {
00556     int x = TileX(v->dest_tile) * TILE_SIZE + TILE_SIZE / 2;
00557     int y = TileY(v->dest_tile) * TILE_SIZE + TILE_SIZE / 2;
00558     if (Delta(v->x_pos, x) + Delta(v->y_pos, y) >= 8) {
00559       v->direction = GetDirectionTowards(v, x, y);
00560 
00561       GetNewVehiclePosResult gp = GetNewVehiclePos(v);
00562       SetDisasterVehiclePos(v, gp.x, gp.y, v->z_pos);
00563       return;
00564     }
00565 
00566     if (!IsValidTile(v->dest_tile)) {
00567       /* Make sure we don't land outside the map. */
00568       delete v;
00569       return;
00570     }
00571 
00572     z = GetSlopeZ(v->x_pos, v->y_pos);
00573     if (z < v->z_pos) {
00574       SetDisasterVehiclePos(v, v->x_pos, v->y_pos, v->z_pos - 1);
00575       return;
00576     }
00577 
00578     v->current_order.SetDestination(2);
00579 
00580     Vehicle *u;
00581     FOR_ALL_VEHICLES(u) {
00582       if (u->type == VEH_TRAIN || u->type == VEH_ROAD) {
00583         if (Delta(u->x_pos, v->x_pos) + Delta(u->y_pos, v->y_pos) <= 12 * TILE_SIZE) {
00584           u->breakdown_ctr = 5;
00585           u->breakdown_delay = 0xF0;
00586         }
00587       }
00588     }
00589 
00590     t = ClosestTownFromTile(v->dest_tile, UINT_MAX);
00591     SetDParam(0, t->index);
00592     AddNewsItem(STR_B004_UFO_LANDS_NEAR,
00593       NS_ACCIDENT_TILE,
00594       v->tile,
00595       0);
00596 
00597     if (!Vehicle::CanAllocateItem(2)) {
00598       delete v;
00599       return;
00600     }
00601     u = new DisasterVehicle();
00602 
00603     InitializeDisasterVehicle(u, -6 * TILE_SIZE, v->y_pos, 135, DIR_SW, ST_BIG_UFO_DESTROYER);
00604     u->u.disaster.big_ufo_destroyer_target = v->index;
00605 
00606     Vehicle *w = new DisasterVehicle();
00607 
00608     u->SetNext(w);
00609     InitializeDisasterVehicle(w, -6 * TILE_SIZE, v->y_pos, 0, DIR_SW, ST_BIG_UFO_DESTROYER_SHADOW);
00610     w->vehstatus |= VS_SHADOW;
00611   } else if (v->current_order.GetDestination() == 0) {
00612     int x = TileX(v->dest_tile) * TILE_SIZE;
00613     int y = TileY(v->dest_tile) * TILE_SIZE;
00614     if (Delta(x, v->x_pos) + Delta(y, v->y_pos) >= TILE_SIZE) {
00615       v->direction = GetDirectionTowards(v, x, y);
00616       GetNewVehiclePosResult gp = GetNewVehiclePos(v);
00617       SetDisasterVehiclePos(v, gp.x, gp.y, v->z_pos);
00618       return;
00619     }
00620 
00621     if (++v->age < 6) {
00622       v->dest_tile = RandomTile();
00623       return;
00624     }
00625     v->current_order.SetDestination(1);
00626 
00627     tile_org = tile = RandomTile();
00628     do {
00629       if (IsPlainRailTile(tile) &&
00630           IsHumanCompany(GetTileOwner(tile))) {
00631         break;
00632       }
00633       tile = TILE_MASK(tile + 1);
00634     } while (tile != tile_org);
00635     v->dest_tile = tile;
00636     v->age = 0;
00637   } else {
00638     return;
00639   }
00640 }
00641 
00646 static void DisasterTick_Big_Ufo_Destroyer(Vehicle *v)
00647 {
00648   Vehicle *u;
00649   int i;
00650 
00651   v->tick_counter++;
00652 
00653   GetNewVehiclePosResult gp = GetNewVehiclePos(v);
00654   SetDisasterVehiclePos(v, gp.x, gp.y, v->z_pos);
00655 
00656   if (gp.x > (int)MapSizeX() * TILE_SIZE + 9 * TILE_SIZE - 1) {
00657     delete v;
00658     return;
00659   }
00660 
00661   if (v->current_order.GetDestination() == 0) {
00662     u = GetVehicle(v->u.disaster.big_ufo_destroyer_target);
00663     if (Delta(v->x_pos, u->x_pos) > TILE_SIZE) return;
00664     v->current_order.SetDestination(1);
00665 
00666     CreateEffectVehicleRel(u, 0, 7, 8, EV_EXPLOSION_LARGE);
00667     SndPlayVehicleFx(SND_12_EXPLOSION, u);
00668 
00669     delete u;
00670 
00671     for (i = 0; i != 80; i++) {
00672       uint32 r = Random();
00673       CreateEffectVehicleAbove(
00674         GB(r, 0, 6) + v->x_pos - 32,
00675         GB(r, 5, 6) + v->y_pos - 32,
00676         0,
00677         EV_EXPLOSION_SMALL);
00678     }
00679 
00680     for (int dy = -3; dy < 3; dy++) {
00681       for (int dx = -3; dx < 3; dx++) {
00682         TileIndex tile = TileAddWrap(v->tile, dx, dy);
00683         if (tile != INVALID_TILE) DisasterClearSquare(tile);
00684       }
00685     }
00686   }
00687 }
00688 
00693 static void DisasterTick_Submarine(Vehicle *v)
00694 {
00695   TileIndex tile;
00696 
00697   v->tick_counter++;
00698 
00699   if (++v->age > 8880) {
00700     delete v;
00701     return;
00702   }
00703 
00704   if (!HasBit(v->tick_counter, 0)) return;
00705 
00706   tile = v->tile + TileOffsByDiagDir(DirToDiagDir(v->direction));
00707   if (IsValidTile(tile)) {
00708     TrackBits trackbits = TrackStatusToTrackBits(GetTileTrackStatus(tile, TRANSPORT_WATER, 0));
00709     if (trackbits == TRACK_BIT_ALL && !Chance16(1, 90)) {
00710       GetNewVehiclePosResult gp = GetNewVehiclePos(v);
00711       SetDisasterVehiclePos(v, gp.x, gp.y, v->z_pos);
00712       return;
00713     }
00714   }
00715 
00716   v->direction = ChangeDir(v->direction, GB(Random(), 0, 1) ? DIRDIFF_90RIGHT : DIRDIFF_90LEFT);
00717 }
00718 
00719 
00720 static void DisasterTick_NULL(Vehicle *v) {}
00721 typedef void DisasterVehicleTickProc(Vehicle *v);
00722 
00723 static DisasterVehicleTickProc * const _disastervehicle_tick_procs[] = {
00724   DisasterTick_Zeppeliner, DisasterTick_NULL,
00725   DisasterTick_Ufo,        DisasterTick_NULL,
00726   DisasterTick_Airplane,   DisasterTick_NULL,
00727   DisasterTick_Helicopter, DisasterTick_NULL, DisasterTick_Helicopter_Rotors,
00728   DisasterTick_Big_Ufo,    DisasterTick_NULL, DisasterTick_Big_Ufo_Destroyer,
00729   DisasterTick_NULL,
00730   DisasterTick_Submarine,
00731   DisasterTick_Submarine,
00732 };
00733 
00734 
00735 void DisasterVehicle::Tick()
00736 {
00737   _disastervehicle_tick_procs[this->subtype](this);
00738 }
00739 
00740 typedef void DisasterInitProc();
00741 
00742 
00745 static void Disaster_Zeppeliner_Init()
00746 {
00747   if (!Vehicle::CanAllocateItem(2)) return;
00748 
00749   Vehicle *v = new DisasterVehicle();
00750   Station *st;
00751 
00752   /* Pick a random place, unless we find a small airport */
00753   int x = TileX(Random()) * TILE_SIZE + TILE_SIZE / 2;
00754 
00755   FOR_ALL_STATIONS(st) {
00756     if (st->airport_tile != INVALID_TILE && (st->airport_type == AT_SMALL || st->airport_type == AT_LARGE)) {
00757       x = (TileX(st->airport_tile) + 2) * TILE_SIZE;
00758       break;
00759     }
00760   }
00761 
00762   InitializeDisasterVehicle(v, x, 0, 135, DIR_SE, ST_ZEPPELINER);
00763 
00764   /* Allocate shadow */
00765   Vehicle *u = new DisasterVehicle();
00766   v->SetNext(u);
00767   InitializeDisasterVehicle(u, x, 0, 0, DIR_SE, ST_ZEPPELINER_SHADOW);
00768   u->vehstatus |= VS_SHADOW;
00769 }
00770 
00771 
00774 static void Disaster_Small_Ufo_Init()
00775 {
00776   if (!Vehicle::CanAllocateItem(2)) return;
00777 
00778   Vehicle *v = new DisasterVehicle();
00779   int x = TileX(Random()) * TILE_SIZE + TILE_SIZE / 2;
00780 
00781   InitializeDisasterVehicle(v, x, 0, 135, DIR_SE, ST_SMALL_UFO);
00782   v->dest_tile = TileXY(MapSizeX() / 2, MapSizeY() / 2);
00783   v->age = 0;
00784 
00785   /* Allocate shadow */
00786   Vehicle *u = new DisasterVehicle();
00787   v->SetNext(u);
00788   InitializeDisasterVehicle(u, x, 0, 0, DIR_SE, ST_SMALL_UFO_SHADOW);
00789   u->vehstatus |= VS_SHADOW;
00790 }
00791 
00792 
00793 /* Combat airplane which destroys an oil refinery */
00794 static void Disaster_Airplane_Init()
00795 {
00796   if (!Vehicle::CanAllocateItem(2)) return;
00797 
00798   Industry *i, *found = NULL;
00799 
00800   FOR_ALL_INDUSTRIES(i) {
00801     if ((GetIndustrySpec(i->type)->behaviour & INDUSTRYBEH_AIRPLANE_ATTACKS) &&
00802         (found == NULL || Chance16(1, 2))) {
00803       found = i;
00804     }
00805   }
00806 
00807   if (found == NULL) return;
00808 
00809   Vehicle *v = new DisasterVehicle();
00810 
00811   /* Start from the bottom (south side) of the map */
00812   int x = (MapSizeX() + 9) * TILE_SIZE - 1;
00813   int y = TileY(found->xy) * TILE_SIZE + 37;
00814 
00815   InitializeDisasterVehicle(v, x, y, 135, DIR_NE, ST_AIRPLANE);
00816 
00817   Vehicle *u = new DisasterVehicle();
00818   v->SetNext(u);
00819   InitializeDisasterVehicle(u, x, y, 0, DIR_SE, ST_AIRPLANE_SHADOW);
00820   u->vehstatus |= VS_SHADOW;
00821 }
00822 
00823 
00825 static void Disaster_Helicopter_Init()
00826 {
00827   if (!Vehicle::CanAllocateItem(3)) return;
00828 
00829   Industry *i, *found = NULL;
00830 
00831   FOR_ALL_INDUSTRIES(i) {
00832     if ((GetIndustrySpec(i->type)->behaviour & INDUSTRYBEH_CHOPPER_ATTACKS) &&
00833         (found == NULL || Chance16(1, 2))) {
00834       found = i;
00835     }
00836   }
00837 
00838   if (found == NULL) return;
00839 
00840   Vehicle *v = new DisasterVehicle();
00841 
00842   int x = -16 * TILE_SIZE;
00843   int y = TileY(found->xy) * TILE_SIZE + 37;
00844 
00845   InitializeDisasterVehicle(v, x, y, 135, DIR_SW, ST_HELICOPTER);
00846 
00847   Vehicle *u = new DisasterVehicle();
00848   v->SetNext(u);
00849   InitializeDisasterVehicle(u, x, y, 0, DIR_SW, ST_HELICOPTER_SHADOW);
00850   u->vehstatus |= VS_SHADOW;
00851 
00852   Vehicle *w = new DisasterVehicle();
00853   u->SetNext(w);
00854   InitializeDisasterVehicle(w, x, y, 140, DIR_SW, ST_HELICOPTER_ROTORS);
00855 }
00856 
00857 
00858 /* Big Ufo which lands on a piece of rail and will consequently be shot
00859  * down by a combat airplane, destroying the surroundings */
00860 static void Disaster_Big_Ufo_Init()
00861 {
00862   if (!Vehicle::CanAllocateItem(2)) return;
00863 
00864   Vehicle *v = new DisasterVehicle();
00865   int x = TileX(Random()) * TILE_SIZE + TILE_SIZE / 2;
00866   int y = MapMaxX() * TILE_SIZE - 1;
00867 
00868   InitializeDisasterVehicle(v, x, y, 135, DIR_NW, ST_BIG_UFO);
00869   v->dest_tile = TileXY(MapSizeX() / 2, MapSizeY() / 2);
00870   v->age = 0;
00871 
00872   /* Allocate shadow */
00873   Vehicle *u = new DisasterVehicle();
00874   v->SetNext(u);
00875   InitializeDisasterVehicle(u, x, y, 0, DIR_NW, ST_BIG_UFO_SHADOW);
00876   u->vehstatus |= VS_SHADOW;
00877 }
00878 
00879 
00880 static void Disaster_Submarine_Init(DisasterSubType subtype)
00881 {
00882   if (!Vehicle::CanAllocateItem()) return;
00883 
00884   int y;
00885   Direction dir;
00886   uint32 r = Random();
00887   int x = TileX(r) * TILE_SIZE + TILE_SIZE / 2;
00888 
00889   if (HasBit(r, 31)) {
00890     y = MapMaxY() * TILE_SIZE - TILE_SIZE / 2 - 1;
00891     dir = DIR_NW;
00892   } else {
00893     y = TILE_SIZE / 2;
00894     if (_settings_game.construction.freeform_edges) y += TILE_SIZE;
00895     dir = DIR_SE;
00896   }
00897   if (!IsWaterTile(TileVirtXY(x, y))) return;
00898 
00899   Vehicle *v = new DisasterVehicle();
00900   InitializeDisasterVehicle(v, x, y, 0, dir, subtype);
00901   v->age = 0;
00902 }
00903 
00904 /* Curious submarine #1, just floats around */
00905 static void Disaster_Small_Submarine_Init()
00906 {
00907   Disaster_Submarine_Init(ST_SMALL_SUBMARINE);
00908 }
00909 
00910 
00911 /* Curious submarine #2, just floats around */
00912 static void Disaster_Big_Submarine_Init()
00913 {
00914   Disaster_Submarine_Init(ST_BIG_SUBMARINE);
00915 }
00916 
00917 
00920 static void Disaster_CoalMine_Init()
00921 {
00922   int index = GB(Random(), 0, 4);
00923   uint m;
00924 
00925   for (m = 0; m < 15; m++) {
00926     const Industry *i;
00927 
00928     FOR_ALL_INDUSTRIES(i) {
00929       if ((GetIndustrySpec(i->type)->behaviour & INDUSTRYBEH_CAN_SUBSIDENCE) && --index < 0) {
00930         SetDParam(0, i->town->index);
00931         AddNewsItem(STR_B005_COAL_MINE_SUBSIDENCE_LEAVES,
00932           NS_ACCIDENT_TILE, i->xy + TileDiffXY(1, 1), 0);
00933 
00934         {
00935           TileIndex tile = i->xy;
00936           TileIndexDiff step = TileOffsByDiagDir((DiagDirection)GB(Random(), 0, 2));
00937 
00938           for (uint n = 0; n < 30; n++) {
00939             DisasterClearSquare(tile);
00940             tile += step;
00941             if (!IsValidTile(tile)) break;
00942           }
00943         }
00944         return;
00945       }
00946     }
00947   }
00948 }
00949 
00950 static DisasterInitProc * const _disaster_initprocs[] = {
00951   Disaster_Zeppeliner_Init,
00952   Disaster_Small_Ufo_Init,
00953   Disaster_Airplane_Init,
00954   Disaster_Helicopter_Init,
00955   Disaster_Big_Ufo_Init,
00956   Disaster_Small_Submarine_Init,
00957   Disaster_Big_Submarine_Init,
00958   Disaster_CoalMine_Init,
00959 };
00960 
00961 static const struct {
00962   Year min;
00963   Year max;
00964 } _dis_years[] = {
00965   { 1930, 1955 }, 
00966   { 1940, 1970 }, 
00967   { 1960, 1990 }, 
00968   { 1970, 2000 }, 
00969   { 2000, 2100 }, 
00970   { 1940, 1965 }, 
00971   { 1975, 2010 }, 
00972   { 1950, 1985 }  
00973 };
00974 
00975 
00976 static void DoDisaster()
00977 {
00978   byte buf[lengthof(_dis_years)];
00979   uint i;
00980   uint j;
00981 
00982   j = 0;
00983   for (i = 0; i != lengthof(_dis_years); i++) {
00984     if (_cur_year >= _dis_years[i].min && _cur_year < _dis_years[i].max) buf[j++] = i;
00985   }
00986 
00987   if (j == 0) return;
00988 
00989   _disaster_initprocs[buf[RandomRange(j)]]();
00990 }
00991 
00992 
00993 static void ResetDisasterDelay()
00994 {
00995   _disaster_delay = GB(Random(), 0, 9) + 730;
00996 }
00997 
00998 void DisasterDailyLoop()
00999 {
01000   if (--_disaster_delay != 0) return;
01001 
01002   ResetDisasterDelay();
01003 
01004   if (_settings_game.difficulty.disasters != 0) DoDisaster();
01005 }
01006 
01007 void StartupDisasters()
01008 {
01009   ResetDisasterDelay();
01010 }
01011 
01016 void ReleaseDisastersTargetingIndustry(IndustryID i)
01017 {
01018   Vehicle *v;
01019   FOR_ALL_VEHICLES(v) {
01020     /* primary disaster vehicles that have chosen target */
01021     if (v->type == VEH_DISASTER && (v->subtype == ST_AIRPLANE || v->subtype == ST_HELICOPTER)) {
01022       /* if it has chosen target, and it is this industry (yes, dest_tile is IndustryID here), set order to "leaving map peacefully" */
01023       if (v->current_order.GetDestination() > 0 && v->dest_tile == i) v->current_order.SetDestination(3);
01024     }
01025   }
01026 }
01027 
01031 void ReleaseDisastersTargetingVehicle(VehicleID vehicle)
01032 {
01033   Vehicle *v;
01034   FOR_ALL_VEHICLES(v) {
01035     /* primary disaster vehicles that have chosen target */
01036     if (v->type == VEH_DISASTER && v->subtype == ST_SMALL_UFO) {
01037       if (v->current_order.GetDestination() != 0 && v->dest_tile == vehicle) {
01038         /* Revert to target-searching */
01039         v->current_order.SetDestination(0);
01040         v->dest_tile = RandomTile();
01041         v->z_pos = 135;
01042         v->age = 0;
01043       }
01044     }
01045   }
01046 }
01047 
01048 void DisasterVehicle::UpdateDeltaXY(Direction direction)
01049 {
01050   this->x_offs        = -1;
01051   this->y_offs        = -1;
01052   this->x_extent      =  2;
01053   this->y_extent      =  2;
01054   this->z_extent      =  5;
01055 }

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