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(svn r22639) -Feature: [NewGRF] Support for ship props 14/15 (ocean/canal speed fraction).

release/1.2
michi_cc 2011-07-07 14:16:22 +00:00
parent 662a0a9cd3
commit 9218c56cde
3 changed files with 17 additions and 4 deletions
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2
src/engine_type.h
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@ -72,6 +72,8 @@ struct ShipVehicleInfo {
SoundID sfx;
bool old_refittable; ///< Is ship refittable; only used during initialisation. Later use EngineInfo::refit_mask.
byte visual_effect; ///< Bitstuffed NewGRF visual effect data
byte ocean_speed_frac; ///< Fraction of maximum speed for ocean tiles.
byte canal_speed_frac; ///< Fraction of maximum speed for canal/river tiles.
};
/**

7
src/newgrf.cpp
View File

@ -1194,10 +1194,11 @@ static ChangeInfoResult ShipVehicleChangeInfo(uint engine, int numinfo, int prop
break;
case 0x14: // Ocean speed fraction
svi->ocean_speed_frac = buf->ReadByte();
break;
case 0x15: // Canal speed fraction
/** @todo Speed fractions for ships on oceans and canals */
buf->ReadByte();
ret = CIR_UNHANDLED;
svi->canal_speed_frac = buf->ReadByte();
break;
case 0x16: // Retire vehicle early

12
src/ship_cmd.cpp
View File

@ -155,7 +155,12 @@ static void CheckIfShipNeedsService(Vehicle *v)
*/
void Ship::UpdateCache()
{
this->vcache.cached_max_speed = GetVehicleProperty(this, PROP_SHIP_SPEED, ShipVehInfo(this->engine_type)->max_speed);
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;
/* 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;
this->UpdateVisualEffect();
}
@ -545,6 +550,11 @@ static void ShipController(Ship *v)
if (!HasBit(r, VETS_ENTERED_WORMHOLE)) {
v->tile = gp.new_tile;
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);
if (old_wc != new_wc) v->UpdateCache();
}
v->direction = (Direction)b[2];