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Custom bridge heads: Initial implementation

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This commit is contained in:
Jonathan G Rennison
2017-02-05 18:07:10 +00:00
parent 1f727e9029
commit da177d063f
12 changed files with 433 additions and 106 deletions
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14
src/pathfinder/follow_track.hpp
View File

@@ -101,8 +101,9 @@ struct CFollowTrackT
{
assert(IsTram()); // this function shouldn't be called in other cases
if (IsNormalRoadTile(tile)) {
RoadBits rb = GetRoadBits(tile, ROADTYPE_TRAM);
const bool is_bridge = IsRoadCustomBridgeHeadTile(tile);
if (is_bridge || IsNormalRoadTile(tile)) {
RoadBits rb = is_bridge ? GetCustomBridgeHeadRoadBits(tile, ROADTYPE_TRAM) : GetRoadBits(tile, ROADTYPE_TRAM);
switch (rb) {
case ROAD_NW: return DIAGDIR_NW;
case ROAD_SW: return DIAGDIR_SW;
@@ -215,7 +216,7 @@ protected:
m_tiles_skipped = GetTunnelBridgeLength(m_new_tile, m_old_tile);
return;
}
assert(ReverseDiagDir(enterdir) == m_exitdir);
if (!IsRoadCustomBridgeHeadTile(m_old_tile)) assert(ReverseDiagDir(enterdir) == m_exitdir);
}
/* normal or station tile, do one step */
@@ -364,7 +365,12 @@ protected:
}
}
} else { // IsBridge(m_new_tile)
if (!m_is_bridge) {
if (!m_is_bridge && IsRoadTT() && IsRoadCustomBridgeHeadTile(m_new_tile)) {
if (!(DiagDirToRoadBits(ReverseDiagDir(m_exitdir)) & GetCustomBridgeHeadRoadBits(m_new_tile, IsTram() ? ROADTYPE_TRAM : ROADTYPE_ROAD))) {
m_err = EC_NO_WAY;
return false;
}
} else if (!m_is_bridge) {
DiagDirection ramp_enderdir = GetTunnelBridgeDirection(m_new_tile);
if (ramp_enderdir != m_exitdir) {
m_err = EC_NO_WAY;

14
src/pathfinder/yapf/yapf_road.cpp
View File

@@ -104,7 +104,10 @@ public:
*/
inline bool PfCalcCost(Node &n, const TrackFollower *tf)
{
int segment_cost = 0;
/* this is to handle the case where the starting tile is a junction custom bridge head,
* and we have advanced across the bridge in the initial step */
int segment_cost = tf->m_tiles_skipped * YAPF_TILE_LENGTH;
uint tiles = 0;
/* start at n.m_key.m_tile / n.m_key.m_td and walk to the end of segment */
TileIndex tile = n.m_key.m_tile;
@@ -127,6 +130,11 @@ public:
TrackFollower F(Yapf().GetVehicle());
if (!F.Follow(tile, trackdir)) break;
/* if we skipped some tunnel tiles, add their cost */
/* with custom bridge heads, this cost must be added before checking if the segment has ended */
segment_cost += F.m_tiles_skipped * YAPF_TILE_LENGTH;
tiles += F.m_tiles_skipped + 1;
/* if there are more trackdirs available & reachable, we are at the end of segment */
if (KillFirstBit(F.m_new_td_bits) != TRACKDIR_BIT_NONE) break;
@@ -135,10 +143,6 @@ public:
/* stop if RV is on simple loop with no junctions */
if (F.m_new_tile == n.m_key.m_tile && new_td == n.m_key.m_td) return false;
/* if we skipped some tunnel tiles, add their cost */
segment_cost += F.m_tiles_skipped * YAPF_TILE_LENGTH;
tiles += F.m_tiles_skipped + 1;
/* add hilly terrain penalty */
segment_cost += Yapf().SlopeCost(tile, F.m_new_tile, trackdir);