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(svn r10317) -Fix [FS#786]: acceleration not calculated properly when a train goes up a hill between tunnels.

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rubidium 2007-06-25 08:24:03 +00:00
parent 74e34ee729
commit 9c0ccadbe0
1 changed files with 15 additions and 9 deletions
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24
src/train_cmd.cpp
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@ -2529,22 +2529,28 @@ static void TrainEnterStation(Vehicle *v, StationID station)
static byte AfterSetTrainPos(Vehicle *v, bool new_tile) static byte AfterSetTrainPos(Vehicle *v, bool new_tile)
{ {
/* need this hint so it returns the right z coordinate on bridges. */
byte new_z = GetSlopeZ(v->x_pos, v->y_pos);
byte old_z = v->z_pos; byte old_z = v->z_pos;
v->z_pos = new_z; v->z_pos= GetSlopeZ(v->x_pos, v->y_pos);
if (new_tile) { if (new_tile) {
CLRBIT(v->u.rail.flags, VRF_GOINGUP); CLRBIT(v->u.rail.flags, VRF_GOINGUP);
CLRBIT(v->u.rail.flags, VRF_GOINGDOWN); CLRBIT(v->u.rail.flags, VRF_GOINGDOWN);
if (new_z != old_z) { if ((v->u.rail.track == TRACK_X || v->u.rail.track == TRACK_Y)) {
TileIndex tile = TileVirtXY(v->x_pos, v->y_pos); /* Any track that isn't TRACK_X or TRACK_Y cannot be sloped.
* To check whether the current tile is sloped, and in which
* direction it is sloped, we get the 'z' at the center of
* the tile (middle_z) and the edge of the tile (old_z),
* which we then can compare. */
static const int HALF_TILE_SIZE = TILE_SIZE / 2;
static const int INV_TILE_SIZE_MASK = ~(TILE_SIZE - 1);
/* XXX workaround, whole UP/DOWN detection needs overhaul */ byte middle_z = GetSlopeZ((v->x_pos & INV_TILE_SIZE_MASK) | HALF_TILE_SIZE, (v->y_pos & INV_TILE_SIZE_MASK) | HALF_TILE_SIZE);
if (!IsTunnelTile(tile)) {
SETBIT(v->u.rail.flags, (new_z > old_z) ? VRF_GOINGUP : VRF_GOINGDOWN); /* For some reason tunnel tiles are always given as sloped :(
* But they are not sloped... */
if (middle_z != old_z && !IsTunnelTile(TileVirtXY(v->x_pos, v->y_pos))) {
SETBIT(v->u.rail.flags, (middle_z > old_z) ? VRF_GOINGUP : VRF_GOINGDOWN);
} }
} }
} }