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(svn r22662) -Fix (r22639)[FS#4683]: Ships can also travel on certain rail tiles.

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frosch 2011-07-12 17:12:10 +00:00
parent d7285e73de
commit 865831cc5d
1 changed files with 23 additions and 3 deletions
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26
src/ship_cmd.cpp
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@ -32,9 +32,29 @@
#include "pathfinder/opf/opf_ship.h"
#include "engine_base.h"
#include "company_base.h"
#include "tunnelbridge_map.h"
#include "table/strings.h"
/**
* Determine the effective #WaterClass for a ship travelling on a tile.
* @param tile Tile of interest
* @return the waterclass to be used by the ship.
*/
static WaterClass GetEffectiveWaterClass(TileIndex tile)
{
if (HasTileWaterClass(tile)) return GetWaterClass(tile);
if (IsTileType(tile, MP_TUNNELBRIDGE)) {
assert(GetTunnelBridgeTransportType(tile) == TRANSPORT_WATER);
return WATER_CLASS_CANAL;
}
if (IsTileType(tile, MP_RAILWAY)) {
assert(GetRailGroundType(tile) == RAIL_GROUND_WATER);
return WATER_CLASS_SEA;
}
NOT_REACHED();
}
static const uint16 _ship_sprites[] = {0x0E5D, 0x0E55, 0x0E65, 0x0E6D};
static inline TrackBits GetTileShipTrackStatus(TileIndex tile)
@ -158,7 +178,7 @@ void Ship::UpdateCache()
const ShipVehicleInfo *svi = ShipVehInfo(this->engine_type);
/* Get speed fraction for the current water type. Aqueducts are always canals. */
byte speed_frac = (!IsTileType(this->tile, MP_TUNNELBRIDGE) && GetWaterClass(this->tile) == WATER_CLASS_SEA) ? svi->ocean_speed_frac : svi->canal_speed_frac;
byte speed_frac = (GetEffectiveWaterClass(this->tile) == WATER_CLASS_SEA) ? svi->ocean_speed_frac : svi->canal_speed_frac;
/* speed_frac == 0 means no reduction while 0xFF means reduction to 1/256. */
this->vcache.cached_max_speed = GetVehicleProperty(this, PROP_SHIP_SPEED, svi->max_speed) * (256 - speed_frac) / 256;
@ -552,8 +572,8 @@ static void ShipController(Ship *v)
v->state = TrackToTrackBits(track);
/* Update ship cache when the water class changes. Aqueducts are always canals. */
WaterClass old_wc = IsTileType(gp.old_tile, MP_TUNNELBRIDGE) ? WATER_CLASS_CANAL : GetWaterClass(gp.old_tile);
WaterClass new_wc = IsTileType(gp.new_tile, MP_TUNNELBRIDGE) ? WATER_CLASS_CANAL : GetWaterClass(gp.new_tile);
WaterClass old_wc = GetEffectiveWaterClass(gp.old_tile);
WaterClass new_wc = GetEffectiveWaterClass(gp.new_tile);
if (old_wc != new_wc) v->UpdateCache();
}