(svn r1) Import of revision 975 of old (crashed) SVN

1 files changed, 980 insertions, 0 deletions

diff --git a/disaster_cmd.c b/disaster_cmd.c
new file mode 100644
index 000000000..bcb69e8f8
--- /dev/null
+++ b/disaster_cmd.c
@@ -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();
+}
+