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(svn r8159) -Cleanup: Sprinkle some coding-style and comments on the disaster code.

release/0.6
Darkvater 2007-01-16 16:54:06 +00:00
parent 12f0e67437
commit 6908565067
1 changed files with 260 additions and 181 deletions
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441
src/disaster_cmd.cpp
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@ -1,5 +1,23 @@
/* $Id$ */ /* $Id$ */
/** @file
* All disaster/easter egg vehicles are handled here.
* The general flow of control for the disaster vehicles is as follows:
* <ol>
* <li>Initialize the disaster in a disaster specific way (eg start position,
* possible target, etc.) Disaster_XXX_Init() function
* <li>Add a subtype to a disaster, which is an index into the function array
* that handles the vehicle's ticks.
* <li>Run the disaster vehicles each tick until their target has been reached,
* this happens in the DisasterTick_XXX() functions. In here, a vehicle's
* state is kept by v->current_order.dest variable. Each achieved sub-target
* will increase this value, and the last one will remove the disaster itself
* </ol>
* @see ChunkHandler
* @see SaveLoad
*/
#include "stdafx.h" #include "stdafx.h"
#include "openttd.h" #include "openttd.h"
#include "functions.h" #include "functions.h"
@ -22,6 +40,24 @@
#include "table/sprites.h" #include "table/sprites.h"
#include "date.h" #include "date.h"
enum DisasterSubType {
ST_Zeppeliner = 0,
ST_Zeppeliner_Shadow = 1,
ST_Small_Ufo = 2,
ST_Small_Ufo_Shadow = 3,
ST_Airplane = 4,
ST_Airplane_Shadow = 5,
ST_Helicopter = 6,
ST_Helicopter_Shadow = 7,
ST_Helicopter_Rotors = 8,
ST_Big_Ufo = 9,
ST_Big_Ufo_Shadow = 10,
ST_Big_Ufo_Destroyer = 11,
ST_Big_Ufo_Destroyer_Shadow = 12,
ST_Small_Submarine = 13,
ST_Big_Submarine = 14,
};
static void DisasterClearSquare(TileIndex tile) static void DisasterClearSquare(TileIndex tile)
{ {
if (!EnsureNoVehicle(tile)) return; if (!EnsureNoVehicle(tile)) return;
@ -54,35 +90,37 @@ static void DisasterClearSquare(TileIndex tile)
} }
} }
static const SpriteID _disaster_images_1[] = {0xF41, 0xF41, 0xF41, 0xF41, 0xF41, 0xF41, 0xF41, 0xF41}; static const SpriteID _disaster_images_1[] = {SPR_BLIMP, SPR_BLIMP, SPR_BLIMP, SPR_BLIMP, SPR_BLIMP, SPR_BLIMP, SPR_BLIMP, SPR_BLIMP};
static const SpriteID _disaster_images_2[] = {0xF44, 0xF44, 0xF44, 0xF44, 0xF44, 0xF44, 0xF44, 0xF44}; 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};
static const SpriteID _disaster_images_3[] = {0xF4E, 0xF4E, 0xF4E, 0xF4E, 0xF4E, 0xF4E, 0xF4E, 0xF4E}; 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};
static const SpriteID _disaster_images_4[] = {0xF46, 0xF46, 0xF47, 0xF47, 0xF48, 0xF48, 0xF49, 0xF49}; 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};
static const SpriteID _disaster_images_5[] = {0xF4A, 0xF4A, 0xF4B, 0xF4B, 0xF4C, 0xF4C, 0xF4D, 0xF4D}; 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};
static const SpriteID _disaster_images_6[] = {0xF50, 0xF50, 0xF50, 0xF50, 0xF50, 0xF50, 0xF50, 0xF50}; 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};
static const SpriteID _disaster_images_7[] = {0xF51, 0xF51, 0xF51, 0xF51, 0xF51, 0xF51, 0xF51, 0xF51}; 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};
static const SpriteID _disaster_images_8[] = {0xF52, 0xF52, 0xF52, 0xF52, 0xF52, 0xF52, 0xF52, 0xF52}; 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};
static const SpriteID _disaster_images_9[] = {0xF3E, 0xF3E, 0xF3E, 0xF3E, 0xF3E, 0xF3E, 0xF3E, 0xF3E}; 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};
static const SpriteID * const _disaster_images[] = { static const SpriteID * const _disaster_images[] = {
_disaster_images_1, _disaster_images_1, _disaster_images_1, _disaster_images_1, // zeppeliner and zeppeliner shadow
_disaster_images_2, _disaster_images_2, _disaster_images_2, _disaster_images_2, // small ufo and small ufo shadow
_disaster_images_3, _disaster_images_3, _disaster_images_3, _disaster_images_3, // combat aircraft and shadow
_disaster_images_8, _disaster_images_8, _disaster_images_9, _disaster_images_8, _disaster_images_8, _disaster_images_9, // combat helicopter, shadow and rotor
_disaster_images_6, _disaster_images_6, _disaster_images_6, _disaster_images_6, // big ufo and shadow
_disaster_images_7, _disaster_images_7, _disaster_images_7, _disaster_images_7, // skyranger and shadow
_disaster_images_4, _disaster_images_5, _disaster_images_4, _disaster_images_5, // small and big submarine sprites
}; };
static void DisasterVehicleUpdateImage(Vehicle *v) static void DisasterVehicleUpdateImage(Vehicle *v)
{ {
int img = v->u.disaster.image_override; SpriteID img = v->u.disaster.image_override;
if (img == 0) if (img == 0) img = _disaster_images[v->subtype][v->direction];
img = _disaster_images[v->subtype][v->direction];
v->cur_image = img; v->cur_image = img;
} }
static void InitializeDisasterVehicle(Vehicle* v, int x, int y, byte z, Direction direction, byte subtype)
/** Initialize a disaster vehicle. These vehicles are of type VEH_Disaster, are unclickable
* and owned by nobody */
static void InitializeDisasterVehicle(Vehicle *v, int x, int y, byte z, Direction direction, byte subtype)
{ {
v->type = VEH_Disaster; v->type = VEH_Disaster;
v->x_pos = x; v->x_pos = x;
@ -128,7 +166,7 @@ static void SetDisasterVehiclePos(Vehicle *v, int x, int y, byte z)
VehiclePositionChanged(v); VehiclePositionChanged(v);
EndVehicleMove(v); EndVehicleMove(v);
if ( (u=v->next) != NULL) { if ((u = v->next) != NULL) {
int safe_x = clamp(x, 0, MapMaxX() * TILE_SIZE); int safe_x = clamp(x, 0, MapMaxX() * TILE_SIZE);
int safe_y = clamp(y - 1, 0, MapMaxY() * TILE_SIZE); int safe_y = clamp(y - 1, 0, MapMaxY() * TILE_SIZE);
BeginVehicleMove(u); BeginVehicleMove(u);
@ -143,7 +181,7 @@ static void SetDisasterVehiclePos(Vehicle *v, int x, int y, byte z)
VehiclePositionChanged(u); VehiclePositionChanged(u);
EndVehicleMove(u); EndVehicleMove(u);
if ( (u=u->next) != NULL) { if ((u = u->next) != NULL) {
BeginVehicleMove(u); BeginVehicleMove(u);
u->x_pos = x; u->x_pos = x;
u->y_pos = y; u->y_pos = y;
@ -154,20 +192,26 @@ static void SetDisasterVehiclePos(Vehicle *v, int x, int y, byte z)
} }
} }
/**
* Zeppeliner handling, v->current_order.dest states:
* 0: Zeppeliner initialization has found a small airport, go there and crash
* 1: Create crash and animate falling down for extra dramatic effect
* 2: Create more smoke and leave debris on ground
* 2: Clear the runway after some time and remove crashed zeppeliner
* If not airport was found, only state 0 is reached until zeppeliner leaves map
*/
static void DisasterTick_Zeppeliner(Vehicle *v) static void DisasterTick_Zeppeliner(Vehicle *v)
{ {
GetNewVehiclePosResult gp; GetNewVehiclePosResult gp;
Station *st; Station *st;
int x,y; int x, y;
byte z; byte z;
TileIndex tile; TileIndex tile;
++v->tick_counter; v->tick_counter++;
if (v->current_order.dest < 2) { if (v->current_order.dest < 2) {
if (v->tick_counter&1) if (HASBIT(v->tick_counter, 0)) return;
return;
GetNewVehiclePos(v, &gp); GetNewVehiclePos(v, &gp);
@ -179,11 +223,10 @@ static void DisasterTick_Zeppeliner(Vehicle *v)
v->age = 0; v->age = 0;
} }
if ((v->tick_counter&7)==0) { if (GB(v->tick_counter, 0, 3) == 0) CreateEffectVehicleRel(v, 0, -17, 2, EV_SMOKE);
CreateEffectVehicleRel(v, 0, -17, 2, EV_SMOKE);
}
} else if (v->current_order.dest == 0) { } else if (v->current_order.dest == 0) {
tile = v->tile; /**/ tile = v->tile;
if (IsValidTile(tile) && if (IsValidTile(tile) &&
IsTileType(tile, MP_STATION) && IsTileType(tile, MP_STATION) &&
@ -199,16 +242,15 @@ static void DisasterTick_Zeppeliner(Vehicle *v)
0); 0);
} }
} }
if (v->y_pos >= ((int)MapSizeY() + 9) * TILE_SIZE - 1)
DeleteDisasterVeh(v); if (v->y_pos >= ((int)MapSizeY() + 9) * TILE_SIZE - 1) DeleteDisasterVeh(v);
return; return;
} }
if (v->current_order.dest > 2) { if (v->current_order.dest > 2) {
if (++v->age <= 13320) if (++v->age <= 13320) return;
return;
tile = v->tile; /**/ tile = v->tile;
if (IsValidTile(tile) && if (IsValidTile(tile) &&
IsTileType(tile, MP_STATION) && IsTileType(tile, MP_STATION) &&
@ -226,8 +268,7 @@ static void DisasterTick_Zeppeliner(Vehicle *v)
x = v->x_pos; x = v->x_pos;
y = v->y_pos; y = v->y_pos;
z = GetSlopeZ(x,y); z = GetSlopeZ(x,y);
if (z < v->z_pos) if (z < v->z_pos) z = v->z_pos - 1;
z = v->z_pos - 1;
SetDisasterVehiclePos(v, x, y, z); SetDisasterVehiclePos(v, x, y, z);
if (++v->age == 1) { if (++v->age == 1) {
@ -237,7 +278,7 @@ static void DisasterTick_Zeppeliner(Vehicle *v)
} else if (v->age == 70) { } else if (v->age == 70) {
v->u.disaster.image_override = SPR_BLIMP_CRASHED; v->u.disaster.image_override = SPR_BLIMP_CRASHED;
} else if (v->age <= 300) { } else if (v->age <= 300) {
if (!(v->tick_counter&7)) { if (GB(v->tick_counter, 0, 3) == 0) {
uint32 r = Random(); uint32 r = Random();
CreateEffectVehicleRel(v, CreateEffectVehicleRel(v,
@ -251,7 +292,7 @@ static void DisasterTick_Zeppeliner(Vehicle *v)
v->age = 0; v->age = 0;
} }
tile = v->tile;/**/ tile = v->tile;
if (IsValidTile(tile) && if (IsValidTile(tile) &&
IsTileType(tile, MP_STATION) && IsTileType(tile, MP_STATION) &&
IsAirport(tile) && IsAirport(tile) &&
@ -261,19 +302,23 @@ static void DisasterTick_Zeppeliner(Vehicle *v)
} }
} }
// UFO starts in the middle, and flies around a bit until it locates /**
// a road vehicle which it targets. * (Small) Ufo handling, v->current_order.dest states:
static void DisasterTick_UFO(Vehicle *v) * 0: Fly around to the middle of the map, then randomly, after a while target a road vehicle
* 1: Home in on a road vehicle and crash it >:)
* If not road vehicle was found, only state 0 is used and Ufo disappears after a while
*/
static void DisasterTick_Ufo(Vehicle *v)
{ {
GetNewVehiclePosResult gp; GetNewVehiclePosResult gp;
Vehicle *u; Vehicle *u;
uint dist; uint dist;
byte z; byte z;
v->u.disaster.image_override = (++v->tick_counter & 8) ? SPR_UFO_SMALL_SCOUT_DARKER : SPR_UFO_SMALL_SCOUT; v->u.disaster.image_override = (HASBIT(++v->tick_counter, 3)) ? SPR_UFO_SMALL_SCOUT_DARKER : SPR_UFO_SMALL_SCOUT;
if (v->current_order.dest == 0) { if (v->current_order.dest == 0) {
// fly around randomly /* Fly around randomly */
int x = TileX(v->dest_tile) * TILE_SIZE; int x = TileX(v->dest_tile) * TILE_SIZE;
int y = TileY(v->dest_tile) * TILE_SIZE; int y = TileY(v->dest_tile) * TILE_SIZE;
if (delta(x, v->x_pos) + delta(y, v->y_pos) >= TILE_SIZE) { if (delta(x, v->x_pos) + delta(y, v->y_pos) >= TILE_SIZE) {
@ -298,7 +343,7 @@ static void DisasterTick_UFO(Vehicle *v)
DeleteDisasterVeh(v); DeleteDisasterVeh(v);
} else { } else {
// target a vehicle /* Target a vehicle */
u = GetVehicle(v->dest_tile); u = GetVehicle(v->dest_tile);
if (u->type != VEH_Road) { if (u->type != VEH_Road) {
DeleteDisasterVeh(v); DeleteDisasterVeh(v);
@ -307,7 +352,7 @@ static void DisasterTick_UFO(Vehicle *v)
dist = delta(v->x_pos, u->x_pos) + delta(v->y_pos, u->y_pos); dist = delta(v->x_pos, u->x_pos) + delta(v->y_pos, u->y_pos);
if (dist < TILE_SIZE && !(u->vehstatus&VS_HIDDEN) && u->breakdown_ctr==0) { if (dist < TILE_SIZE && !(u->vehstatus & VS_HIDDEN) && u->breakdown_ctr == 0) {
u->breakdown_ctr = 3; u->breakdown_ctr = 3;
u->breakdown_delay = 140; u->breakdown_delay = 140;
} }
@ -319,7 +364,7 @@ static void DisasterTick_UFO(Vehicle *v)
if (dist <= TILE_SIZE && z > u->z_pos) z--; if (dist <= TILE_SIZE && z > u->z_pos) z--;
SetDisasterVehiclePos(v, gp.x, gp.y, z); SetDisasterVehiclePos(v, gp.x, gp.y, z);
if (z <= u->z_pos && (u->vehstatus&VS_HIDDEN)==0) { if (z <= u->z_pos && (u->vehstatus & VS_HIDDEN)==0) {
v->age++; v->age++;
if (u->u.road.crashed_ctr == 0) { if (u->u.road.crashed_ctr == 0) {
u->u.road.crashed_ctr++; u->u.road.crashed_ctr++;
@ -332,7 +377,7 @@ static void DisasterTick_UFO(Vehicle *v)
} }
} }
// destroy? /* Destroy? */
if (v->age > 50) { if (v->age > 50) {
CreateEffectVehicleRel(v, 0, 7, 8, EV_EXPLOSION_LARGE); CreateEffectVehicleRel(v, 0, 7, 8, EV_EXPLOSION_LARGE);
SndPlayVehicleFx(SND_12_EXPLOSION, v); SndPlayVehicleFx(SND_12_EXPLOSION, v);
@ -353,25 +398,32 @@ static void DestructIndustry(Industry *i)
} }
} }
// Airplane which destroys an oil refinery /**
static void DisasterTick_2(Vehicle *v) * Airplane handling, v->current_order.dest states:
* 0: Fly towards the targetted oil refinery
* 1: If within 15 tiles, fire away rockets and destroy industry
* 2: Refinery explosions
* 3: Fly out of the map
* If the industry was removed in the meantime just fly to the end of the map
*/
static void DisasterTick_Airplane(Vehicle *v)
{ {
GetNewVehiclePosResult gp; GetNewVehiclePosResult gp;
v->tick_counter++; v->tick_counter++;
v->u.disaster.image_override = v->u.disaster.image_override =
(v->current_order.dest == 1 && v->tick_counter & 4) ? SPR_F_15_FIRING : 0; (v->current_order.dest == 1 && HASBIT(v->tick_counter, 2)) ? SPR_F_15_FIRING : 0;
GetNewVehiclePos(v, &gp); GetNewVehiclePos(v, &gp);
SetDisasterVehiclePos(v, gp.x, gp.y, v->z_pos); SetDisasterVehiclePos(v, gp.x, gp.y, v->z_pos);
if (gp.x < -160) { if (gp.x < (-10 * TILE_SIZE)) {
DeleteDisasterVeh(v); DeleteDisasterVeh(v);
return; return;
} }
if (v->current_order.dest == 2) { if (v->current_order.dest == 2) {
if (!(v->tick_counter&3)) { if (GB(v->tick_counter, 0, 2) == 0) {
Industry *i = GetIndustry(v->dest_tile); Industry *i = GetIndustry(v->dest_tile);
int x = TileX(i->xy) * TILE_SIZE; int x = TileX(i->xy) * TILE_SIZE;
int y = TileY(i->xy) * TILE_SIZE; int y = TileY(i->xy) * TILE_SIZE;
@ -383,8 +435,7 @@ static void DisasterTick_2(Vehicle *v)
GB(r, 12, 4), GB(r, 12, 4),
EV_EXPLOSION_SMALL); EV_EXPLOSION_SMALL);
if (++v->age >= 55) if (++v->age >= 55) v->current_order.dest = 3;
v->current_order.dest = 3;
} }
} else if (v->current_order.dest == 1) { } else if (v->current_order.dest == 1) {
if (++v->age == 112) { if (++v->age == 112) {
@ -401,19 +452,17 @@ static void DisasterTick_2(Vehicle *v)
SndPlayTileFx(SND_12_EXPLOSION, i->xy); SndPlayTileFx(SND_12_EXPLOSION, i->xy);
} }
} else if (v->current_order.dest == 0) { } else if (v->current_order.dest == 0) {
int x,y; int x, y;
TileIndex tile; TileIndex tile;
uint ind; uint ind;
x = v->x_pos - 15 * TILE_SIZE; x = v->x_pos - (15 * TILE_SIZE);
y = v->y_pos; y = v->y_pos;
if ( (uint)x > MapMaxX() * TILE_SIZE - 1) if ( (uint)x > MapMaxX() * TILE_SIZE - 1) return;
return;
tile = TileVirtXY(x, y); tile = TileVirtXY(x, y);
if (!IsTileType(tile, MP_INDUSTRY)) if (!IsTileType(tile, MP_INDUSTRY)) return;
return;
ind = GetIndustryIndex(tile); ind = GetIndustryIndex(tile);
v->dest_tile = ind; v->dest_tile = ind;
@ -425,14 +474,20 @@ static void DisasterTick_2(Vehicle *v)
} }
} }
// Helicopter which destroys a factory /**
static void DisasterTick_3(Vehicle *v) * Helicopter handling, v->current_order.dest states:
* 0: Fly towards the targetted factory
* 1: If within 15 tiles, fire away rockets and destroy industry
* 2: Factory explosions
* 3: Fly out of the map
*/
static void DisasterTick_Helicopter(Vehicle *v)
{ {
GetNewVehiclePosResult gp; GetNewVehiclePosResult gp;
v->tick_counter++; v->tick_counter++;
v->u.disaster.image_override = v->u.disaster.image_override =
(v->current_order.dest == 1 && v->tick_counter & 4) ? SPR_AH_64A_FIRING : 0; (v->current_order.dest == 1 && HASBIT(v->tick_counter, 2)) ? SPR_AH_64A_FIRING : 0;
GetNewVehiclePos(v, &gp); GetNewVehiclePos(v, &gp);
SetDisasterVehiclePos(v, gp.x, gp.y, v->z_pos); SetDisasterVehiclePos(v, gp.x, gp.y, v->z_pos);
@ -443,7 +498,7 @@ static void DisasterTick_3(Vehicle *v)
} }
if (v->current_order.dest == 2) { if (v->current_order.dest == 2) {
if (!(v->tick_counter&3)) { if (GB(v->tick_counter, 0, 2) == 0) {
Industry *i = GetIndustry(v->dest_tile); Industry *i = GetIndustry(v->dest_tile);
int x = TileX(i->xy) * TILE_SIZE; int x = TileX(i->xy) * TILE_SIZE;
int y = TileY(i->xy) * TILE_SIZE; int y = TileY(i->xy) * TILE_SIZE;
@ -455,8 +510,7 @@ static void DisasterTick_3(Vehicle *v)
GB(r, 12, 4), GB(r, 12, 4),
EV_EXPLOSION_SMALL); EV_EXPLOSION_SMALL);
if (++v->age >= 55) if (++v->age >= 55) v->current_order.dest = 3;
v->current_order.dest = 3;
} }
} else if (v->current_order.dest == 1) { } else if (v->current_order.dest == 1) {
if (++v->age == 112) { if (++v->age == 112) {
@ -473,19 +527,17 @@ static void DisasterTick_3(Vehicle *v)
SndPlayTileFx(SND_12_EXPLOSION, i->xy); SndPlayTileFx(SND_12_EXPLOSION, i->xy);
} }
} else if (v->current_order.dest == 0) { } else if (v->current_order.dest == 0) {
int x,y; int x, y;
TileIndex tile; TileIndex tile;
uint ind; uint ind;
x = v->x_pos + (15 * TILE_SIZE); x = v->x_pos + (15 * TILE_SIZE);
y = v->y_pos; y = v->y_pos;
if ( (uint)x > MapMaxX() * TILE_SIZE - 1) if ( (uint)x > MapMaxX() * TILE_SIZE - 1) return;
return;
tile = TileVirtXY(x, y); tile = TileVirtXY(x, y);
if (!IsTileType(tile, MP_INDUSTRY)) if (!IsTileType(tile, MP_INDUSTRY)) return;
return;
ind = GetIndustryIndex(tile); ind = GetIndustryIndex(tile);
v->dest_tile = ind; v->dest_tile = ind;
@ -497,11 +549,11 @@ static void DisasterTick_3(Vehicle *v)
} }
} }
// Helicopter rotor blades /** Helicopter rotor blades; keep these spinning */
static void DisasterTick_3b(Vehicle *v) static void DisasterTick_Helicopter_Rotors(Vehicle *v)
{ {
if (++v->tick_counter & 1) v->tick_counter++;
return; if (HASBIT(v->tick_counter, 0)) return;
if (++v->cur_image > SPR_ROTOR_MOVING_3) v->cur_image = SPR_ROTOR_MOVING_1; if (++v->cur_image > SPR_ROTOR_MOVING_3) v->cur_image = SPR_ROTOR_MOVING_1;
@ -510,13 +562,18 @@ static void DisasterTick_3b(Vehicle *v)
EndVehicleMove(v); EndVehicleMove(v);
} }
// Big UFO which lands on a piece of rail. /**
// Will be shot down by a plane * (Big) Ufo handling, v->current_order.dest states:
static void DisasterTick_4(Vehicle *v) * 0: Fly around to the middle of the map, then randomly, after a while target a road vehicle
* 1: Home in on a piece of clear rail (without signals) and land there and breakdown all trains
* in a radius of 12 tiles; and now we wait...
* because as soon as the Ufo lands, a fighter jet, a Skyranger, is called to clear up the mess
*/
static void DisasterTick_Big_Ufo(Vehicle *v)
{ {
GetNewVehiclePosResult gp; GetNewVehiclePosResult gp;
byte z; byte z;
Vehicle *u,*w; Vehicle *u, *w;
Town *t; Town *t;
TileIndex tile; TileIndex tile;
TileIndex tile_org; TileIndex tile_org;
@ -564,18 +621,16 @@ static void DisasterTick_4(Vehicle *v)
return; return;
} }
InitializeDisasterVehicle(u, -6 * TILE_SIZE, v->y_pos, 135, DIR_SW, 11); InitializeDisasterVehicle(u, -6 * TILE_SIZE, v->y_pos, 135, DIR_SW, ST_Big_Ufo_Destroyer);
u->u.disaster.unk2 = v->index; u->u.disaster.unk2 = v->index;
w = ForceAllocateSpecialVehicle(); w = ForceAllocateSpecialVehicle();
if (w == NULL) if (w == NULL) return;
return;
u->next = w; u->next = w;
InitializeDisasterVehicle(w, -6 * TILE_SIZE, v->y_pos, 0, DIR_SW, 12); InitializeDisasterVehicle(w, -6 * TILE_SIZE, v->y_pos, 0, DIR_SW, ST_Big_Ufo_Destroyer_Shadow);
w->vehstatus |= VS_SHADOW; w->vehstatus |= VS_SHADOW;
} else if (v->current_order.dest < 1) { } else if (v->current_order.dest == 0) {
int x = TileX(v->dest_tile) * TILE_SIZE; int x = TileX(v->dest_tile) * TILE_SIZE;
int y = TileY(v->dest_tile) * TILE_SIZE; int y = TileY(v->dest_tile) * TILE_SIZE;
if (delta(x, v->x_pos) + delta(y, v->y_pos) >= TILE_SIZE) { if (delta(x, v->x_pos) + delta(y, v->y_pos) >= TILE_SIZE) {
@ -598,7 +653,7 @@ static void DisasterTick_4(Vehicle *v)
IsHumanPlayer(GetTileOwner(tile))) { IsHumanPlayer(GetTileOwner(tile))) {
break; break;
} }
tile = TILE_MASK(tile+1); tile = TILE_MASK(tile + 1);
} while (tile != tile_org); } while (tile != tile_org);
v->dest_tile = tile; v->dest_tile = tile;
v->age = 0; v->age = 0;
@ -607,8 +662,11 @@ static void DisasterTick_4(Vehicle *v)
} }
} }
// The plane which will shoot down the UFO /**
static void DisasterTick_4b(Vehicle *v) * Skyranger destroying (Big) Ufo handling, v->current_order.dest states:
* 0: Home in on landed Ufo and shoot it down
*/
static void DisasterTick_Big_Ufo_Destroyer(Vehicle *v)
{ {
GetNewVehiclePosResult gp; GetNewVehiclePosResult gp;
Vehicle *u; Vehicle *u;
@ -626,8 +684,7 @@ static void DisasterTick_4b(Vehicle *v)
if (v->current_order.dest == 0) { if (v->current_order.dest == 0) {
u = GetVehicle(v->u.disaster.unk2); u = GetVehicle(v->u.disaster.unk2);
if (delta(v->x_pos, u->x_pos) > TILE_SIZE) if (delta(v->x_pos, u->x_pos) > TILE_SIZE) return;
return;
v->current_order.dest = 1; v->current_order.dest = 1;
CreateEffectVehicleRel(u, 0, 7, 8, EV_EXPLOSION_LARGE); CreateEffectVehicleRel(u, 0, 7, 8, EV_EXPLOSION_LARGE);
@ -651,10 +708,12 @@ static void DisasterTick_4b(Vehicle *v)
} }
} }
// Submarine handler /**
static void DisasterTick_5_and_6(Vehicle *v) * Submarine, v->current_order.dest states:
* Unused, just float around aimlessly and pop up at different places, turning around
*/
static void DisasterTick_Submarine(Vehicle *v)
{ {
uint32 r;
GetNewVehiclePosResult gp; GetNewVehiclePosResult gp;
TileIndex tile; TileIndex tile;
@ -668,15 +727,17 @@ static void DisasterTick_5_and_6(Vehicle *v)
return; return;
} }
if (!(v->tick_counter & 1)) return; if (!HASBIT(v->tick_counter, 0)) return;
tile = v->tile + TileOffsByDiagDir(DirToDiagDir(v->direction)); tile = v->tile + TileOffsByDiagDir(DirToDiagDir(v->direction));
if (IsValidTile(tile) && if (IsValidTile(tile)) {
(r=GetTileTrackStatus(tile,TRANSPORT_WATER),(byte)(r|(r >> 8)) == 0x3F) && TrackdirBits r = (TrackdirBits)GetTileTrackStatus(tile, TRANSPORT_WATER);
!CHANCE16(1,90)) {
GetNewVehiclePos(v, &gp); if (TrackdirBitsToTrackBits(r) == TRACK_BIT_ALL && !CHANCE16(1, 90)) {
SetDisasterVehiclePos(v, gp.x, gp.y, v->z_pos); GetNewVehiclePos(v, &gp);
return; SetDisasterVehiclePos(v, gp.x, gp.y, v->z_pos);
return;
}
} }
v->direction = ChangeDir(v->direction, GB(Random(), 0, 1) ? DIRDIFF_90RIGHT : DIRDIFF_90LEFT); v->direction = ChangeDir(v->direction, GB(Random(), 0, 1) ? DIRDIFF_90RIGHT : DIRDIFF_90LEFT);
@ -687,14 +748,14 @@ static void DisasterTick_NULL(Vehicle *v) {}
typedef void DisasterVehicleTickProc(Vehicle *v); typedef void DisasterVehicleTickProc(Vehicle *v);
static DisasterVehicleTickProc * const _disastervehicle_tick_procs[] = { static DisasterVehicleTickProc * const _disastervehicle_tick_procs[] = {
DisasterTick_Zeppeliner,DisasterTick_NULL, DisasterTick_Zeppeliner, DisasterTick_NULL,
DisasterTick_UFO,DisasterTick_NULL, DisasterTick_Ufo, DisasterTick_NULL,
DisasterTick_2,DisasterTick_NULL, DisasterTick_Airplane, DisasterTick_NULL,
DisasterTick_3,DisasterTick_NULL,DisasterTick_3b, DisasterTick_Helicopter, DisasterTick_NULL, DisasterTick_Helicopter_Rotors,
DisasterTick_4,DisasterTick_NULL, DisasterTick_Big_Ufo, DisasterTick_NULL, DisasterTick_Big_Ufo_Destroyer,
DisasterTick_4b,DisasterTick_NULL, DisasterTick_NULL,
DisasterTick_5_and_6, DisasterTick_Submarine,
DisasterTick_5_and_6, DisasterTick_Submarine,
}; };
@ -711,8 +772,10 @@ void OnNewDay_DisasterVehicle(Vehicle *v)
typedef void DisasterInitProc(void); typedef void DisasterInitProc(void);
// Zeppeliner which crashes on a small airport
static void Disaster0_Init(void) /** Zeppeliner which crashes on a small airport if one found,
* otherwise crashes on a random tile */
static void Disaster_Zeppeliner_Init(void)
{ {
Vehicle *v = ForceAllocateSpecialVehicle(), *u; Vehicle *v = ForceAllocateSpecialVehicle(), *u;
Station *st; Station *st;
@ -732,18 +795,21 @@ static void Disaster0_Init(void)
} }
} }
InitializeDisasterVehicle(v, x, 0, 135, DIR_SE, 0); InitializeDisasterVehicle(v, x, 0, 135, DIR_SE, ST_Zeppeliner);
// Allocate shadow too? /* Allocate shadow too? */
u = ForceAllocateSpecialVehicle(); u = ForceAllocateSpecialVehicle();
if (u != NULL) { if (u != NULL) {
v->next = u; v->next = u;
InitializeDisasterVehicle(u, x, 0, 0, DIR_SE, 1); InitializeDisasterVehicle(u, x, 0, 0, DIR_SE, ST_Zeppeliner_Shadow);
u->vehstatus |= VS_SHADOW; u->vehstatus |= VS_SHADOW;
} }
} }
static void Disaster1_Init(void)
/** Ufo which flies around aimlessly from the middle of the map a bit
* until it locates a road vehicle which it targets and then destroys */
static void Disaster_Ufo_Init(void)
{ {
Vehicle *v = ForceAllocateSpecialVehicle(), *u; Vehicle *v = ForceAllocateSpecialVehicle(), *u;
int x; int x;
@ -752,24 +818,26 @@ static void Disaster1_Init(void)
x = TileX(Random()) * TILE_SIZE + TILE_SIZE / 2; x = TileX(Random()) * TILE_SIZE + TILE_SIZE / 2;
InitializeDisasterVehicle(v, x, 0, 135, DIR_SE, 2); InitializeDisasterVehicle(v, x, 0, 135, DIR_SE, ST_Small_Ufo);
v->dest_tile = TileXY(MapSizeX() / 2, MapSizeY() / 2); v->dest_tile = TileXY(MapSizeX() / 2, MapSizeY() / 2);
v->age = 0; v->age = 0;
// Allocate shadow too? /* Allocate shadow too? */
u = ForceAllocateSpecialVehicle(); u = ForceAllocateSpecialVehicle();
if (u != NULL) { if (u != NULL) {
v->next = u; v->next = u;
InitializeDisasterVehicle(u, x, 0, 0, DIR_SE, 3); InitializeDisasterVehicle(u, x, 0, 0, DIR_SE, ST_Small_Ufo_Shadow);
u->vehstatus |= VS_SHADOW; u->vehstatus |= VS_SHADOW;
} }
} }
static void Disaster2_Init(void)
/* Combat airplane which destroys an oil refinery */
static void Disaster_Airplane_Init(void)
{ {
Industry *i, *found; Industry *i, *found;
Vehicle *v,*u; Vehicle *v, *u;
int x,y; int x, y;
found = NULL; found = NULL;
@ -785,30 +853,33 @@ static void Disaster2_Init(void)
v = ForceAllocateSpecialVehicle(); v = ForceAllocateSpecialVehicle();
if (v == NULL) return; if (v == NULL) return;
/* Start from the bottom (south side) of the map */
x = (MapSizeX() + 9) * TILE_SIZE - 1; x = (MapSizeX() + 9) * TILE_SIZE - 1;
y = TileY(found->xy) * TILE_SIZE + 37; y = TileY(found->xy) * TILE_SIZE + 37;
InitializeDisasterVehicle(v, x, y, 135, DIR_NE, 4); InitializeDisasterVehicle(v, x, y, 135, DIR_NE, ST_Airplane);
u = ForceAllocateSpecialVehicle(); u = ForceAllocateSpecialVehicle();
if (u != NULL) { if (u != NULL) {
v->next = u; v->next = u;
InitializeDisasterVehicle(u, x, y, 0, DIR_SE, 5); InitializeDisasterVehicle(u, x, y, 0, DIR_SE, ST_Airplane_Shadow);
u->vehstatus |= VS_SHADOW; u->vehstatus |= VS_SHADOW;
} }
} }
static void Disaster3_Init(void)
/** Combat helicopter that destroys a factory */
static void Disaster_Helicopter_Init(void)
{ {
Industry *i, *found; Industry *i, *found;
Vehicle *v,*u,*w; Vehicle *v, *u, *w;
int x,y; int x, y;
found = NULL; found = NULL;
FOR_ALL_INDUSTRIES(i) { FOR_ALL_INDUSTRIES(i) {
if (i->type == IT_FACTORY && if (i->type == IT_FACTORY &&
(found==NULL || CHANCE16(1,2))) { (found == NULL || CHANCE16(1, 2))) {
found = i; found = i;
} }
} }
@ -821,47 +892,76 @@ static void Disaster3_Init(void)
x = -16 * TILE_SIZE; x = -16 * TILE_SIZE;
y = TileY(found->xy) * TILE_SIZE + 37; y = TileY(found->xy) * TILE_SIZE + 37;
InitializeDisasterVehicle(v, x, y, 135, DIR_SW, 6); InitializeDisasterVehicle(v, x, y, 135, DIR_SW, ST_Helicopter);
u = ForceAllocateSpecialVehicle(); u = ForceAllocateSpecialVehicle();
if (u != NULL) { if (u != NULL) {
v->next = u; v->next = u;
InitializeDisasterVehicle(u, x, y, 0, DIR_SW, 7); InitializeDisasterVehicle(u, x, y, 0, DIR_SW, ST_Helicopter_Shadow);
u->vehstatus |= VS_SHADOW; u->vehstatus |= VS_SHADOW;
w = ForceAllocateSpecialVehicle(); w = ForceAllocateSpecialVehicle();
if (w != NULL) { if (w != NULL) {
u->next = w; u->next = w;
InitializeDisasterVehicle(w, x, y, 140, DIR_SW, 8); InitializeDisasterVehicle(w, x, y, 140, DIR_SW, ST_Helicopter_Rotors);
} }
} }
} }
static void Disaster4_Init(void)
/* Big Ufo which lands on a piece of rail and will consequently be shot
* down by a combat airplane, destroying the surroundings */
static void Disaster_Big_Ufo_Init(void)
{ {
Vehicle *v = ForceAllocateSpecialVehicle(), *u; Vehicle *v = ForceAllocateSpecialVehicle(), *u;
int x,y; int x, y;
if (v == NULL) return; if (v == NULL) return;
x = TileX(Random()) * TILE_SIZE + TILE_SIZE / 2; x = TileX(Random()) * TILE_SIZE + TILE_SIZE / 2;
y = MapMaxX() * TILE_SIZE - 1; y = MapMaxX() * TILE_SIZE - 1;
InitializeDisasterVehicle(v, x, y, 135, DIR_NW, 9); InitializeDisasterVehicle(v, x, y, 135, DIR_NW, ST_Big_Ufo);
v->dest_tile = TileXY(MapSizeX() / 2, MapSizeY() / 2); v->dest_tile = TileXY(MapSizeX() / 2, MapSizeY() / 2);
v->age = 0; v->age = 0;
// Allocate shadow too? /* Allocate shadow too? */
u = ForceAllocateSpecialVehicle(); u = ForceAllocateSpecialVehicle();
if (u != NULL) { if (u != NULL) {
v->next = u; v->next = u;
InitializeDisasterVehicle(u, x, y, 0, DIR_NW, 10); InitializeDisasterVehicle(u, x, y, 0, DIR_NW, ST_Big_Ufo_Shadow);
u->vehstatus |= VS_SHADOW; u->vehstatus |= VS_SHADOW;
} }
} }
// Submarine type 1
static void Disaster5_Init(void) /* Curious submarine #1, just floats around */
static void Disaster_Submarine1_Init(void)
{
Vehicle *v = ForceAllocateSpecialVehicle();
int x, y;
Direction dir;
uint32 r;
if (v == NULL) return;
r = Random();
x = TileX(r) * TILE_SIZE + TILE_SIZE / 2;
if (HASBIT(r, 31)) {
y = MapMaxX() * TILE_SIZE - TILE_SIZE / 2 - 1;
dir = DIR_NW;
} else {
y = TILE_SIZE / 2;
dir = DIR_SE;
}
InitializeDisasterVehicle(v, x, y, 0, dir, ST_Small_Submarine);
v->age = 0;
}
/* Curious submarine #2, just floats around */
static void Disaster_Submarine2_Init(void)
{ {
Vehicle *v = ForceAllocateSpecialVehicle(); Vehicle *v = ForceAllocateSpecialVehicle();
int x,y; int x,y;
@ -873,48 +973,27 @@ static void Disaster5_Init(void)
r = Random(); r = Random();
x = TileX(r) * TILE_SIZE + TILE_SIZE / 2; x = TileX(r) * TILE_SIZE + TILE_SIZE / 2;
if (r & 0x80000000) { if (HASBIT(r, 31)) {
y = MapMaxX() * TILE_SIZE - TILE_SIZE / 2 - 1; y = MapMaxX() * TILE_SIZE - TILE_SIZE / 2 - 1;
dir = DIR_NW; dir = DIR_NW;
} else { } else {
y = TILE_SIZE / 2; y = TILE_SIZE / 2;
dir = DIR_SE; dir = DIR_SE;
} }
InitializeDisasterVehicle(v, x, y, 0, dir, 13); InitializeDisasterVehicle(v, x, y, 0, dir, ST_Big_Submarine);
v->age = 0; v->age = 0;
} }
// Submarine type 2
static void Disaster6_Init(void)
{
Vehicle *v = ForceAllocateSpecialVehicle();
int x,y;
Direction dir;
uint32 r;
if (v == NULL) return; /** Coal mine catastrophe, destroys a stretch of 30 tiles of
* land in a certain direction */
r = Random(); static void Disaster_CoalMine_Init(void)
x = TileX(r) * TILE_SIZE + TILE_SIZE / 2;
if (r & 0x80000000) {
y = MapMaxX() * TILE_SIZE - TILE_SIZE / 2 - 1;
dir = DIR_NW;
} else {
y = TILE_SIZE / 2;
dir = DIR_SE;
}
InitializeDisasterVehicle(v, x, y, 0, dir, 14);
v->age = 0;
}
static void Disaster7_Init(void)
{ {
int index = GB(Random(), 0, 4); int index = GB(Random(), 0, 4);
uint m; uint m;
for (m = 0; m < 15; m++) { for (m = 0; m < 15; m++) {
const Industry* i; const Industry *i;
FOR_ALL_INDUSTRIES(i) { FOR_ALL_INDUSTRIES(i) {
if (i->type == IT_COAL_MINE && --index < 0) { if (i->type == IT_COAL_MINE && --index < 0) {
@ -939,28 +1018,28 @@ static void Disaster7_Init(void)
} }
static DisasterInitProc * const _disaster_initprocs[] = { static DisasterInitProc * const _disaster_initprocs[] = {
Disaster0_Init, Disaster_Zeppeliner_Init,
Disaster1_Init, Disaster_Ufo_Init,
Disaster2_Init, Disaster_Airplane_Init,
Disaster3_Init, Disaster_Helicopter_Init,
Disaster4_Init, Disaster_Big_Ufo_Init,
Disaster5_Init, Disaster_Submarine1_Init,
Disaster6_Init, Disaster_Submarine2_Init,
Disaster7_Init, Disaster_CoalMine_Init,
}; };
static const struct { static const struct {
Year min; Year min;
Year max; Year max;
} _dis_years[] = { } _dis_years[] = {
{ 1930, 1955 }, { 1930, 1955 }, // zeppeliner
{ 1940, 1970 }, { 1940, 1970 }, // ufo (small)
{ 1960, 1990 }, { 1960, 1990 }, // airplane
{ 1970, 2000 }, { 1970, 2000 }, // helicopter
{ 2000, 2100 }, { 2000, 2100 }, // ufo (big)
{ 1940, 1965 }, { 1940, 1965 }, // submarine (small)
{ 1975, 2010 }, { 1975, 2010 }, // submarine (big)
{ 1950, 1985 } { 1950, 1985 } // coalmine
}; };