--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/disaster_cmd.c Mon Aug 09 17:04:08 2004 +0000
@@ -0,0 +1,980 @@
+#include "stdafx.h"
+#include "ttd.h"
+#include "vehicle.h"
+#include "command.h"
+#include "news.h"
+#include "gfx.h"
+#include "station.h"
+#include "town.h"
+#include "industry.h"
+#include "player.h"
+#include "airport_movement.h"
+
+static void DisasterClearSquare(uint tile)
+{
+ int type;
+
+ if (!EnsureNoVehicle(tile))
+ return;
+
+ type = _map_type_and_height[tile] >> 4;
+
+ if (type == MP_RAILWAY) {
+ if (IS_HUMAN_PLAYER(_map_owner[tile]))
+ DoClearSquare(tile);
+ } else if (type == MP_HOUSE) {
+ byte p = _current_player;
+ _current_player = OWNER_NONE;
+ DoCommandByTile(tile, 0, 0, DC_EXEC, CMD_LANDSCAPE_CLEAR);
+ _current_player = p;
+ } else if (type == MP_TREES || type == MP_CLEAR) {
+ DoClearSquare(tile);
+ }
+}
+
+static const SpriteID _disaster_images_1[] = {0xF41,0xF41,0xF41,0xF41,0xF41,0xF41,0xF41,0xF41};
+static const SpriteID _disaster_images_2[] = {0xF44,0xF44,0xF44,0xF44,0xF44,0xF44,0xF44,0xF44};
+static const SpriteID _disaster_images_3[] = {0xF4E,0xF4E,0xF4E,0xF4E,0xF4E,0xF4E,0xF4E,0xF4E};
+static const SpriteID _disaster_images_4[] = {0xF46,0xF46,0xF47,0xF47,0xF48,0xF48,0xF49,0xF49};
+static const SpriteID _disaster_images_5[] = {0xF4A,0xF4A,0xF4B,0xF4B,0xF4C,0xF4C,0xF4D,0xF4D};
+static const SpriteID _disaster_images_6[] = {0xF50,0xF50,0xF50,0xF50,0xF50,0xF50,0xF50,0xF50};
+static const SpriteID _disaster_images_7[] = {0xF51,0xF51,0xF51,0xF51,0xF51,0xF51,0xF51,0xF51};
+static const SpriteID _disaster_images_8[] = {0xF52,0xF52,0xF52,0xF52,0xF52,0xF52,0xF52,0xF52};
+static const SpriteID _disaster_images_9[] = {0xF3E,0xF3E,0xF3E,0xF3E,0xF3E,0xF3E,0xF3E,0xF3E};
+
+static const SpriteID * const _disaster_images[] = {
+ _disaster_images_1,_disaster_images_1,
+ _disaster_images_2,_disaster_images_2,
+ _disaster_images_3,_disaster_images_3,
+ _disaster_images_8,_disaster_images_8,_disaster_images_9,
+ _disaster_images_6,_disaster_images_6,
+ _disaster_images_7,_disaster_images_7,
+ _disaster_images_4,_disaster_images_5,
+};
+
+static void DisasterVehicleUpdateImage(Vehicle *v)
+{
+ int img = v->u.disaster.image_override;
+ if (img == 0)
+ img = _disaster_images[v->subtype][v->direction];
+ v->cur_image = img;
+}
+
+static void InitializeDisasterVehicle(Vehicle *v, int x, int y, byte z, byte direction, byte subtype)
+{
+ v->type = VEH_Disaster;
+ v->x_pos = x;
+ v->y_pos = y;
+ v->z_pos = z;
+ v->tile = TILE_FROM_XY(x,y);
+ v->direction = direction;
+ v->subtype = subtype;
+ v->x_offs = -1;
+ v->y_offs = -1;
+ v->sprite_width = 2;
+ v->sprite_height = 2;
+ v->z_height = 5;
+ v->owner = OWNER_NONE;
+ v->vehstatus = VS_UNCLICKABLE;
+ v->u.disaster.image_override = 0;
+ v->next_order = 0;
+
+ DisasterVehicleUpdateImage(v);
+ VehiclePositionChanged(v);
+ BeginVehicleMove(v);
+ EndVehicleMove(v);
+}
+
+static void DeleteDisasterVeh(Vehicle *v)
+{
+ DeleteVehicleChain(v);
+}
+
+static void SetDisasterVehiclePos(Vehicle *v, int x, int y, byte z)
+{
+ Vehicle *u;
+ int yt;
+
+ BeginVehicleMove(v);
+ v->x_pos = x;
+ v->y_pos = y;
+ v->z_pos = z;
+ v->tile = TILE_FROM_XY(x,y);
+
+ DisasterVehicleUpdateImage(v);
+ VehiclePositionChanged(v);
+ EndVehicleMove(v);
+
+ if ( (u=v->next) != NULL) {
+ BeginVehicleMove(u);
+
+ u->x_pos = x;
+ u->y_pos = yt = y - 1 - (max(z - GetSlopeZ(x, y-1), 0) >> 3);
+ u->z_pos = GetSlopeZ(x,yt);
+ u->direction = v->direction;
+
+ DisasterVehicleUpdateImage(u);
+ VehiclePositionChanged(u);
+ EndVehicleMove(u);
+
+ if ( (u=u->next) != NULL) {
+ BeginVehicleMove(u);
+ u->x_pos = x;
+ u->y_pos = y;
+ u->z_pos = z + 5;
+ VehiclePositionChanged(u);
+ EndVehicleMove(u);
+ }
+ }
+}
+
+
+static void DisasterTick_Zeppeliner(Vehicle *v)
+{
+ GetNewVehiclePosResult gp;
+ Station *st;
+ int x,y;
+ byte z;
+ uint tile;
+
+ ++v->tick_counter;
+
+ if (v->next_order < 2) {
+ if (v->tick_counter&1)
+ return;
+
+ GetNewVehiclePos(v, &gp);
+
+ SetDisasterVehiclePos(v, gp.x, gp.y, v->z_pos);
+
+ if (v->next_order == 1) {
+ if (++v->age == 38) {
+ v->next_order = 2;
+ v->age = 0;
+ }
+
+ if ((v->tick_counter&7)==0) {
+ CreateEffectVehicleRel(v, 0, -17, 2, EV_SMOKE_3);
+ }
+ } else if (v->next_order == 0) {
+ tile = v->tile; /**/
+
+ if (IS_TILETYPE(tile, MP_STATION) &&
+ IS_BYTE_INSIDE(_map5[tile], 8, 0x43) &&
+ IS_HUMAN_PLAYER(_map_owner[tile])) {
+
+ v->next_order = 1;
+ v->age = 0;
+
+ SET_DPARAM16(0, _map2[tile]);
+ AddNewsItem(STR_B000_ZEPPELIN_DISASTER_AT,
+ NEWS_FLAGS(NM_THIN, NF_VIEWPORT|NF_VEHICLE, NT_ACCIDENT, 0),
+ v->index,
+ 0);
+ }
+ }
+ if (v->y_pos >= (TILES_Y+9) * 16 - 1)
+ DeleteDisasterVeh(v);
+ return;
+ }
+
+ if (v->next_order > 2) {
+ if (++v->age <= 13320)
+ return;
+
+ tile = v->tile; /**/
+
+ if (IS_TILETYPE(tile, MP_STATION) &&
+ IS_BYTE_INSIDE(_map5[tile], 8, 0x43) &&
+ IS_HUMAN_PLAYER(_map_owner[tile])) {
+
+ st = DEREF_STATION(_map2[tile]);
+ CLRBITS(st->airport_flags, RUNWAY_IN_block);
+ }
+
+ SetDisasterVehiclePos(v, v->x_pos, v->y_pos, v->z_pos);
+ DeleteDisasterVeh(v);
+ return;
+ }
+
+ x = v->x_pos;
+ y = v->y_pos;
+ z = GetSlopeZ(x,y);
+ if (z < v->z_pos)
+ z = v->z_pos - 1;
+ SetDisasterVehiclePos(v, x, y, z);
+
+ if (++v->age == 1) {
+ CreateEffectVehicleRel(v, 0, 7, 8, EV_CRASHED_SMOKE);
+ SndPlayVehicleFx(0x10, v);
+ v->u.disaster.image_override = 0xF42;
+ } else if (v->age == 70) {
+ v->u.disaster.image_override = 0xF43;
+ } else if (v->age <= 300) {
+ if (!(v->tick_counter&7)) {
+ uint32 r = Random();
+
+ CreateEffectVehicleRel(v,
+ -7 + (r&0xF),
+ -7 + (r>>4&0xF),
+ 5 + (r>>8&0x7),
+ EV_DEMOLISH);
+ }
+ } else if (v->age == 350) {
+ v->next_order = 3;
+ v->age = 0;
+ }
+
+ tile = v->tile;/**/
+ if (IS_TILETYPE(tile, MP_STATION) &&
+ IS_BYTE_INSIDE(_map5[tile], 8, 0x43) &&
+ IS_HUMAN_PLAYER(_map_owner[tile])) {
+
+ st = DEREF_STATION(_map2[tile]);
+ SETBITS(st->airport_flags, RUNWAY_IN_block);
+ }
+}
+
+// UFO starts in the middle, and flies around a bit until it locates
+// a road vehicle which it targets.
+static void DisasterTick_UFO(Vehicle *v)
+{
+ GetNewVehiclePosResult gp;
+ Vehicle *u;
+ uint dist;
+ byte z;
+
+ v->u.disaster.image_override = (++v->tick_counter & 8) ? 0xF45 : 0xF44;
+
+ if (v->next_order == 0) {
+// fly around randomly
+ int x = GET_TILE_X(v->dest_tile)*16;
+ int y = GET_TILE_Y(v->dest_tile)*16;
+ if (abs(x - v->x_pos) + abs(y - v->y_pos) >= 16) {
+ v->direction = GetDirectionTowards(v, x, y);
+ GetNewVehiclePos(v, &gp);
+ SetDisasterVehiclePos(v, gp.x, gp.y, v->z_pos);
+ return;
+ }
+ if (++v->age < 6) {
+ v->dest_tile = TILE_MASK(Random());
+ return;
+ }
+ v->next_order = 1;
+
+ FOR_ALL_VEHICLES(u) {
+ if (u->type == VEH_Road && IS_HUMAN_PLAYER(u->owner)) {
+ v->dest_tile = u->index;
+ v->age = 0;
+ return;
+ }
+ }
+
+ DeleteDisasterVeh(v);
+ } else {
+// target a vehicle
+ u = &_vehicles[v->dest_tile];
+ if (u->type != VEH_Road) {
+ DeleteDisasterVeh(v);
+ return;
+ }
+
+ dist = abs(v->x_pos - u->x_pos) + abs(v->y_pos - u->y_pos);
+
+ if (dist < 16 && !(u->vehstatus&VS_HIDDEN) && u->breakdown_ctr==0) {
+ u->breakdown_ctr = 3;
+ u->breakdown_delay = 140;
+ }
+
+ v->direction = GetDirectionTowards(v, u->x_pos, u->y_pos);
+ GetNewVehiclePos(v, &gp);
+
+ z = v->z_pos;
+ if (dist <= 16 && z > u->z_pos) z--;
+ SetDisasterVehiclePos(v, gp.x, gp.y, z);
+
+ if (z <= u->z_pos && (u->vehstatus&VS_HIDDEN)==0) {
+ v->age++;
+ if (u->u.road.crashed_ctr == 0) {
+ u->u.road.crashed_ctr++;
+ u->vehstatus |= VS_CRASHED;
+
+ AddNewsItem(STR_B001_ROAD_VEHICLE_DESTROYED,
+ NEWS_FLAGS(NM_THIN, NF_VIEWPORT|NF_VEHICLE, NT_ACCIDENT, 0),
+ u->index,
+ 0);
+ }
+ }
+
+// destroy?
+ if (v->age > 50) {
+ CreateEffectVehicleRel(v, 0, 7, 8, EV_CRASHED_SMOKE);
+ SndPlayVehicleFx(0x10, v);
+ DeleteDisasterVeh(v);
+ }
+ }
+}
+
+static void DestructIndustry(Industry *i)
+{
+ uint tile;
+ byte index = i - _industries;
+
+ for(tile=0; tile != TILES_X*TILES_Y; tile++) {
+ if (IS_TILETYPE(tile, MP_INDUSTRY) && _map2[tile] == index) {
+ _map_owner[tile] = 0;
+ MarkTileDirtyByTile(tile);
+ }
+ }
+}
+
+// Airplane which destroys an oil refinery
+static void DisasterTick_2(Vehicle *v)
+{
+ GetNewVehiclePosResult gp;
+
+ v->tick_counter++;
+ v->u.disaster.image_override = (v->next_order == 1 && v->tick_counter&4) ? 0xF4F : 0;
+
+ GetNewVehiclePos(v, &gp);
+ SetDisasterVehiclePos(v, gp.x, gp.y, v->z_pos);
+
+ if (gp.x < -160) {
+ DeleteDisasterVeh(v);
+ return;
+ }
+
+ if (v->next_order == 2) {
+ if (!(v->tick_counter&3)) {
+ Industry *i = DEREF_INDUSTRY(v->dest_tile);
+ int x = GET_TILE_X(i->xy)*16;
+ int y = GET_TILE_Y(i->xy)*16;
+ uint32 r = Random();
+
+ CreateEffectVehicleAbove(
+ x + (r & 0x3F),
+ y + (r >> 6 & 0x3F),
+ (r >> 12 & 0xF),
+ EV_DEMOLISH);
+
+ if (++v->age >= 55)
+ v->next_order = 3;
+ }
+ } else if (v->next_order == 1) {
+ if (++v->age == 112) {
+ Industry *i;
+
+ v->next_order = 2;
+ v->age = 0;
+
+ i = DEREF_INDUSTRY(v->dest_tile);
+ DestructIndustry(i);
+
+ SET_DPARAM16(0, i->town->index);
+ AddNewsItem(STR_B002_OIL_REFINERY_EXPLOSION, NEWS_FLAGS(NM_THIN,NF_VIEWPORT|NF_TILE,NT_ACCIDENT,0), i->xy, 0);
+ SndPlayTileFx(0x10, i->xy);
+ }
+ } else if (v->next_order == 0) {
+ int x,y;
+ uint tile;
+ int ind;
+
+ x = v->x_pos - 15*16;
+ y = v->y_pos;
+
+ if ( (uint)x > (TILES_X-1) * 16-1)
+ return;
+
+ tile = TILE_FROM_XY(x,y);
+ if (!IS_TILETYPE(tile, MP_INDUSTRY))
+ return;
+
+ v->dest_tile = ind = _map2[tile];
+
+ if (DEREF_INDUSTRY(ind)->type == IT_OIL_REFINERY) {
+ v->next_order = 1;
+ v->age = 0;
+ }
+ }
+}
+
+// Helicopter which destroys a factory
+static void DisasterTick_3(Vehicle *v)
+{
+ GetNewVehiclePosResult gp;
+
+ v->tick_counter++;
+ v->u.disaster.image_override = (v->next_order == 1 && v->tick_counter&4) ? 0xF53 : 0;
+
+ GetNewVehiclePos(v, &gp);
+ SetDisasterVehiclePos(v, gp.x, gp.y, v->z_pos);
+
+ if (gp.x > TILES_X * 16 + 9*16 - 1) {
+ DeleteDisasterVeh(v);
+ return;
+ }
+
+ if (v->next_order == 2) {
+ if (!(v->tick_counter&3)) {
+ Industry *i = DEREF_INDUSTRY(v->dest_tile);
+ int x = GET_TILE_X(i->xy)*16;
+ int y = GET_TILE_Y(i->xy)*16;
+ uint32 r = Random();
+
+ CreateEffectVehicleAbove(
+ x + (r & 0x3F),
+ y + (r >> 6 & 0x3F),
+ (r >> 12 & 0xF),
+ EV_DEMOLISH);
+
+ if (++v->age >= 55)
+ v->next_order = 3;
+ }
+ } else if (v->next_order == 1) {
+ if (++v->age == 112) {
+ Industry *i;
+
+ v->next_order = 2;
+ v->age = 0;
+
+ i = DEREF_INDUSTRY(v->dest_tile);
+ DestructIndustry(i);
+
+ SET_DPARAM16(0, i->town->index);
+ AddNewsItem(STR_B003_FACTORY_DESTROYED_IN_SUSPICIOUS, NEWS_FLAGS(NM_THIN,NF_VIEWPORT|NF_TILE,NT_ACCIDENT,0), i->xy, 0);
+ SndPlayTileFx(0x10, i->xy);
+ }
+ } else if (v->next_order == 0) {
+ int x,y;
+ uint tile;
+ int ind;
+
+ x = v->x_pos - 15*16;
+ y = v->y_pos;
+
+ if ( (uint)x > (TILES_X-1) * 16-1)
+ return;
+
+ tile = TILE_FROM_XY(x,y);
+ if (!IS_TILETYPE(tile, MP_INDUSTRY))
+ return;
+
+ v->dest_tile = ind = _map2[tile];
+
+ if (DEREF_INDUSTRY(ind)->type == IT_FACTORY) {
+ v->next_order = 1;
+ v->age = 0;
+ }
+ }
+}
+
+// Helicopter rotor blades
+static void DisasterTick_3b(Vehicle *v)
+{
+ if (++v->tick_counter & 1)
+ return;
+
+ if (++v->cur_image == 0xF40 + 1)
+ v->cur_image = 0xF3E;
+
+ VehiclePositionChanged(v);
+ BeginVehicleMove(v);
+ EndVehicleMove(v);
+}
+
+// Big UFO which lands on a piece of rail.
+// Will be shot down by a plane
+static void DisasterTick_4(Vehicle *v)
+{
+ GetNewVehiclePosResult gp;
+ byte z;
+ Vehicle *u,*w;
+ Town *t;
+ uint tile,tile_org;
+
+ v->tick_counter++;
+
+ if (v->next_order == 1) {
+ int x = GET_TILE_X(v->dest_tile)*16 + 8;
+ int y = GET_TILE_Y(v->dest_tile)*16 + 8;
+ if (abs(v->x_pos - x) + abs(v->y_pos - y) >= 8) {
+ v->direction = GetDirectionTowards(v, x, y);
+
+ GetNewVehiclePos(v, &gp);
+ SetDisasterVehiclePos(v, gp.x, gp.y, v->z_pos);
+ return;
+ }
+
+ z = GetSlopeZ(v->x_pos, v->y_pos);
+ if (z < v->z_pos) {
+ SetDisasterVehiclePos(v, v->x_pos, v->y_pos, v->z_pos - 1);
+ return;
+ }
+
+ v->next_order = 2;
+
+ FOR_ALL_VEHICLES(u) {
+ if (u->type == VEH_Train || u->type == VEH_Road) {
+ if (abs(u->x_pos - v->x_pos) + abs(u->y_pos - v->y_pos) <= 12*16) {
+ u->breakdown_ctr = 5;
+ u->breakdown_delay = 0xF0;
+ }
+ }
+ }
+
+ t = ClosestTownFromTile(v->dest_tile, (uint)-1);
+ SET_DPARAM16(0, t->index);
+ AddNewsItem(STR_B004_UFO_LANDS_NEAR,
+ NEWS_FLAGS(NM_THIN, NF_VIEWPORT|NF_TILE, NT_ACCIDENT, 0),
+ v->tile,
+ 0);
+
+ u = ForceAllocateSpecialVehicle();
+ if (u == NULL) {
+ DeleteDisasterVeh(v);
+ return;
+ }
+
+ InitializeDisasterVehicle(u, -6*16, v->y_pos, 135, 5, 11);
+ u->u.disaster.unk2 = v->index;
+
+ w = ForceAllocateSpecialVehicle();
+ if (w == NULL)
+ return;
+
+ u->next = w;
+ InitializeDisasterVehicle(w, -6*16, v->y_pos, 0, 5, 12);
+ w->vehstatus |= VS_DISASTER;
+ } else if (v->next_order < 1) {
+
+ int x = GET_TILE_X(v->dest_tile)*16;
+ int y = GET_TILE_Y(v->dest_tile)*16;
+ if (abs(x - v->x_pos) + abs(y - v->y_pos) >= 16) {
+ v->direction = GetDirectionTowards(v, x, y);
+ GetNewVehiclePos(v, &gp);
+ SetDisasterVehiclePos(v, gp.x, gp.y, v->z_pos);
+ return;
+ }
+
+ if (++v->age < 6) {
+ v->dest_tile = TILE_MASK(Random());
+ return;
+ }
+ v->next_order = 1;
+
+ tile_org = tile = TILE_MASK(Random());
+ do {
+ if (IS_TILETYPE(tile, MP_RAILWAY) &&
+ (_map5[tile]&~3)!=0xC0 && IS_HUMAN_PLAYER(_map_owner[tile]))
+ break;
+ tile = TILE_MASK(tile+1);
+ } while (tile != tile_org);
+ v->dest_tile = tile;
+ v->age = 0;
+ } else
+ return;
+}
+
+// The plane which will shoot down the UFO
+static void DisasterTick_4b(Vehicle *v)
+{
+ GetNewVehiclePosResult gp;
+ Vehicle *u;
+ int i;
+
+ v->tick_counter++;
+
+ GetNewVehiclePos(v, &gp);
+ SetDisasterVehiclePos(v, gp.x, gp.y, v->z_pos);
+
+ if (gp.x > TILES_X * 16 + 9*16 - 1) {
+ DeleteDisasterVeh(v);
+ return;
+ }
+
+ if (v->next_order == 0) {
+ u = &_vehicles[v->u.disaster.unk2];
+ if (abs(v->x_pos - u->x_pos) > 16)
+ return;
+ v->next_order = 1;
+
+ CreateEffectVehicleRel(u, 0, 7, 8, EV_CRASHED_SMOKE);
+ SndPlayVehicleFx(0x10, u);
+
+ DeleteDisasterVeh(u);
+
+ for(i=0; i!=80; i++) {
+ uint32 r = Random();
+ CreateEffectVehicleAbove(
+ v->x_pos-32+(r&0x3F),
+ v->y_pos-32+(r>>5&0x3F),
+ 0,
+ EV_DEMOLISH);
+ }
+
+ BEGIN_TILE_LOOP(tile,6,6,v->tile - TILE_XY(3,3))
+ tile = TILE_MASK(tile);
+ DisasterClearSquare(tile);
+ END_TILE_LOOP(tile,6,6,v->tile - TILE_XY(3,3))
+ }
+}
+
+// Submarine handler
+static void DisasterTick_5_and_6(Vehicle *v)
+{
+ uint32 r;
+ GetNewVehiclePosResult gp;
+ uint tile;
+
+ v->tick_counter++;
+
+ if (++v->age > 8880) {
+ VehiclePositionChanged(v);
+ BeginVehicleMove(v);
+ EndVehicleMove(v);
+ DeleteVehicle(v);
+ return;
+ }
+
+ if (!(v->tick_counter&1))
+ return;
+
+ tile = v->tile + _tileoffs_by_dir[v->direction >> 1];
+ if (IsValidTile(tile) &&
+ (r=GetTileTrackStatus(tile,4),(byte)(r+(r >> 8)) == 0x3F) &&
+ !CHANCE16(1,90)) {
+ GetNewVehiclePos(v, &gp);
+ SetDisasterVehiclePos(v, gp.x, gp.y, v->z_pos);
+ return;
+ }
+
+ v->direction = (v->direction + ((Random()&1)?2:-2))&7;
+}
+
+
+static void DisasterTick_NULL(Vehicle *v) {}
+typedef void DisasterVehicleTickProc(Vehicle *v);
+
+static DisasterVehicleTickProc * const _disastervehicle_tick_procs[] = {
+ DisasterTick_Zeppeliner,DisasterTick_NULL,
+ DisasterTick_UFO,DisasterTick_NULL,
+ DisasterTick_2,DisasterTick_NULL,
+ DisasterTick_3,DisasterTick_NULL,DisasterTick_3b,
+ DisasterTick_4,DisasterTick_NULL,
+ DisasterTick_4b,DisasterTick_NULL,
+ DisasterTick_5_and_6,
+ DisasterTick_5_and_6,
+};
+
+
+void DisasterVehicle_Tick(Vehicle *v)
+{
+ _disastervehicle_tick_procs[v->subtype](v);
+}
+
+void HandleClickOnDisasterVeh(Vehicle *v)
+{
+ // not used
+}
+
+void OnNewDay_DisasterVehicle(Vehicle *v)
+{
+ // not used
+}
+
+typedef void DisasterInitProc();
+
+// Zeppeliner which crashes on a small airport
+static void Disaster0_Init()
+{
+ Vehicle *v = ForceAllocateSpecialVehicle(), *u;
+ Station *st;
+ int x;
+
+ if (v == NULL)
+ return;
+
+ for(st=_stations;;) {
+ if (st->xy && st->airport_tile != 0 &&
+ st->airport_type <= 1 &&
+ IS_HUMAN_PLAYER(st->owner)) {
+ x = (GET_TILE_X(st->xy) + 2) * 16;
+ break;
+ }
+
+ if (++st == endof(_stations)) {
+ x = (GET_TILE_X(Random())) * 16 + 8;
+ break;
+ }
+ }
+
+ InitializeDisasterVehicle(v, x, 0, 135, 3, 0);
+
+ // Allocate shadow too?
+ u = ForceAllocateSpecialVehicle();
+ if (u != NULL) {
+ v->next = u;
+ InitializeDisasterVehicle(u,x,0,0,3,1);
+ u->vehstatus |= VS_DISASTER;
+ }
+}
+
+static void Disaster1_Init()
+{
+ Vehicle *v = ForceAllocateSpecialVehicle(), *u;
+ int x;
+
+ if (v == NULL)
+ return;
+
+ x = (GET_TILE_X(Random())) * 16 + 8;
+
+ InitializeDisasterVehicle(v, x, 0, 135, 3, 2);
+ v->dest_tile = TILE_XY(TILES_X/2,TILES_Y/2);
+ v->age = 0;
+
+ // Allocate shadow too?
+ u = ForceAllocateSpecialVehicle();
+ if (u != NULL) {
+ v->next = u;
+ InitializeDisasterVehicle(u,x,0,0,3,3);
+ u->vehstatus |= VS_DISASTER;
+ }
+}
+
+static void Disaster2_Init()
+{
+ Industry *i, *found;
+ Vehicle *v,*u;
+ int x,y;
+
+ for(found=NULL,i=_industries; i != endof(_industries); i++) {
+ if (i->xy != 0 &&
+ i->type == IT_OIL_REFINERY &&
+ (found==NULL || CHANCE16(1,2))) {
+ found = i;
+ }
+ }
+
+ if (found == NULL)
+ return;
+
+ v = ForceAllocateSpecialVehicle();
+ if (v == NULL)
+ return;
+
+ x = (TILES_X+9) * 16 - 1;
+ y = GET_TILE_Y(found->xy)*16 + 37;
+
+ InitializeDisasterVehicle(v,x,y, 135,1,4);
+
+ u = ForceAllocateSpecialVehicle();
+ if (u != NULL) {
+ v->next = u;
+ InitializeDisasterVehicle(u,x,y,0,3,5);
+ u->vehstatus |= VS_DISASTER;
+ }
+}
+
+static void Disaster3_Init()
+{
+ Industry *i, *found;
+ Vehicle *v,*u,*w;
+ int x,y;
+
+ for(found=NULL,i=_industries; i != endof(_industries); i++) {
+ if (i->xy != 0 &&
+ i->type == IT_FACTORY &&
+ (found==NULL || CHANCE16(1,2))) {
+ found = i;
+ }
+ }
+
+ if (found == NULL)
+ return;
+
+ v = ForceAllocateSpecialVehicle();
+ if (v == NULL)
+ return;
+
+ x = -16 * 16;
+ y = GET_TILE_Y(found->xy)*16 + 37;
+
+ InitializeDisasterVehicle(v,x,y, 135,5,6);
+
+ u = ForceAllocateSpecialVehicle();
+ if (u != NULL) {
+ v->next = u;
+ InitializeDisasterVehicle(u,x,y,0,5,7);
+ u->vehstatus |= VS_DISASTER;
+
+ w = ForceAllocateSpecialVehicle();
+ if (w != NULL) {
+ u->next = w;
+ InitializeDisasterVehicle(w,x,y,140,5,8);
+ }
+ }
+}
+
+static void Disaster4_Init()
+{
+ Vehicle *v = ForceAllocateSpecialVehicle(), *u;
+ int x,y;
+
+ if (v == NULL)
+ return;
+
+ x = (GET_TILE_X(Random())) * 16 + 8;
+
+ y = (TILES_X-1)*16-1;
+ InitializeDisasterVehicle(v, x, y, 135, 7, 9);
+ v->dest_tile = TILE_XY(TILES_X/2,TILES_Y/2);
+ v->age = 0;
+
+ // Allocate shadow too?
+ u = ForceAllocateSpecialVehicle();
+ if (u != NULL) {
+ v->next = u;
+ InitializeDisasterVehicle(u,x,y,0,7,10);
+ u->vehstatus |= VS_DISASTER;
+ }
+}
+
+// Submarine type 1
+static void Disaster5_Init()
+{
+ Vehicle *v = ForceAllocateSpecialVehicle();
+ int x,y;
+ byte dir;
+ uint32 r;
+
+ if (v == NULL)
+ return;
+
+ r = Random();
+ x = (GET_TILE_X(r)) * 16 + 8;
+
+ y = 8;
+ dir = 3;
+ if (r & 0x80000000) { y = (TILES_X-1) * 16 - 8 - 1; dir = 7; }
+ InitializeDisasterVehicle(v, x, y, 0, dir,13);
+ v->age = 0;
+}
+
+// Submarine type 2
+static void Disaster6_Init()
+{
+ Vehicle *v = ForceAllocateSpecialVehicle();
+ int x,y;
+ byte dir;
+ uint32 r;
+
+ if (v == NULL)
+ return;
+
+ r = Random();
+ x = (GET_TILE_X(r)) * 16 + 8;
+
+ y = 8;
+ dir = 3;
+ if (r & 0x80000000) { y = (TILES_X-1) * 16 - 8 - 1; dir = 7; }
+ InitializeDisasterVehicle(v, x, y, 0, dir,14);
+ v->age = 0;
+}
+
+static void Disaster7_Init()
+{
+ Industry *i;
+ int maxloop = 15;
+ int index = Random() & 0xF;
+
+ do {
+ for(i=_industries; i != endof(_industries); i++) {
+ if (i->xy != 0 && i->type == IT_COAL_MINE && --index < 0) {
+
+ SET_DPARAM16(0, i->town->index);
+ AddNewsItem(STR_B005_COAL_MINE_SUBSIDENCE_LEAVES,
+ NEWS_FLAGS(NM_THIN,NF_VIEWPORT|NF_TILE,NT_ACCIDENT,0), i->xy + TILE_XY(1,1), 0);
+
+ {
+ uint tile = i->xy;
+ int step = _tileoffs_by_dir[Random() & 3];
+ int count = 30;
+ do {
+ DisasterClearSquare(tile);
+ tile = TILE_MASK(tile + step);
+ } while (--count);
+ }
+ return;
+ }
+ }
+ } while (--maxloop != 0);
+}
+
+static DisasterInitProc * const _disaster_initprocs[] = {
+ Disaster0_Init,
+ Disaster1_Init,
+ Disaster2_Init,
+ Disaster3_Init,
+ Disaster4_Init,
+ Disaster5_Init,
+ Disaster6_Init,
+ Disaster7_Init,
+};
+
+typedef struct {
+ byte min,max;
+} DisasterYears;
+
+#define MK(a,b) {a-20,b-20}
+static const DisasterYears _dis_years[8] = {
+ MK(30,55),
+ MK(40,70),
+ MK(60,90),
+ MK(70,100),
+ MK(100,200),
+ MK(40,65),
+ MK(75,110),
+ MK(50,85),
+};
+
+
+void DoDisaster()
+{
+ byte buf[8];
+ byte year = _cur_year;
+ int i,j;
+
+ for(i=j=0; i!=lengthof(_dis_years); i++) {
+ if (year >= _dis_years[i].min &&
+ year < _dis_years[i].max)
+ buf[j++] = i;
+ }
+
+ if (j == 0)
+ return;
+
+ _disaster_initprocs[buf[(uint16)Random() * j >> 16]]();
+}
+
+
+static void ResetDisasterDelay()
+{
+ _disaster_delay = (int)(Random() & 0x1FF) + 730;
+}
+
+void DisasterDailyLoop()
+{
+ if (--_disaster_delay != 0)
+ return;
+
+ ResetDisasterDelay();
+
+ if (_opt.diff.disasters != 0)
+ DoDisaster();
+}
+
+void StartupDisasters() {
+ ResetDisasterDelay();
+}
+