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(svn r11045) -Codechange: added a function to tell if a vehicle is the rear part of a dualheaded train engine

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This commit is contained in:
bjarni 2007-09-05 10:15:23 +00:00
parent 1028e2dc91
commit 7cdf6d1cbe
4 changed files with 18 additions and 8 deletions
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6
src/autoreplace_cmd.cpp
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@ -202,7 +202,7 @@ static CommandCost ReplaceVehicle(Vehicle **w, byte flags, Money total_cost)
/* Get the vehicle in front of the one we move out */
Vehicle *front = old_v->Previous();
/* If the vehicle in front is the rear end of a dualheaded engine, then we need to use the one in front of that one */
if (IsMultiheaded(front) && !IsTrainEngine(front)) front = front->Previous();
if (IsRearDualheaded(front)) front = front->Previous();
/* Now we move the old one out of the train */
DoCommand(0, (INVALID_VEHICLE << 16) | old_v->index, 0, DC_EXEC, CMD_MOVE_RAIL_VEHICLE);
/* Add the new vehicle */
@ -250,7 +250,7 @@ static CommandCost ReplaceVehicle(Vehicle **w, byte flags, Money total_cost)
if (old_v->type == VEH_TRAIN && IsFrontEngine(old_v)) {
Vehicle *next_veh = GetNextVehicle(old_v);
if (IsMultiheaded(next_veh) && !IsTrainEngine(next_veh)) next_veh = next_veh->Next(); // don't try to move the rear multiheaded engine
if (IsRearDualheaded(next_veh)) next_veh = next_veh->Next(); // don't try to move the rear multiheaded engine
if (next_veh != NULL) {
/* Verify that the wagons can be placed on the engine in question.
* This is done by building an engine, test if the wagons can be added and then sell the test engine. */
@ -337,7 +337,7 @@ CommandCost MaybeReplaceVehicle(Vehicle *v, bool check, bool display_costs)
cost = CommandCost();
w = v;
do {
if (w->type == VEH_TRAIN && IsMultiheaded(w) && !IsTrainEngine(w)) {
if (w->type == VEH_TRAIN && IsRearDualheaded(w)) {
/* we build the rear ends of multiheaded trains with the front ones */
continue;
}

10
src/train.h
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@ -225,6 +225,16 @@ static inline Vehicle *GetLastEnginePart(Vehicle *v)
return v;
}
/** Tell if we are dealing with the rear end of a multiheaded engine.
* @param v Vehicle.
* @return True if the engine is the rear part of a dualheaded engine.
*/
static inline bool IsRearDualheaded(const Vehicle *v)
{
assert(v->type == VEH_TRAIN);
return (IsMultiheaded(v) && !IsTrainEngine(v));
}
/** Get the next real (non-articulated part) vehicle in the consist.
* @param v Vehicle.
* @return Next vehicle in the consist.

6
src/train_cmd.cpp
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@ -798,7 +798,7 @@ int CheckTrainInDepot(const Vehicle *v, bool needs_to_be_stopped)
* engines with more articulated parts than before works correctly.
*
* Also skip counting rear ends of multiheaded engines */
if (!IsArticulatedPart(v) && !(!IsTrainEngine(v) && IsMultiheaded(v))) count++;
if (!IsArticulatedPart(v) && !IsRearDualheaded(v)) count++;
if (v->u.rail.track != TRACK_BIT_DEPOT || v->tile != tile ||
(IsFrontEngine(v) && needs_to_be_stopped && !(v->vehstatus & VS_STOPPED))) {
return -1;
@ -953,7 +953,7 @@ CommandCost CmdMoveRailVehicle(TileIndex tile, uint32 flags, uint32 p1, uint32 p
dst_head = NULL;
}
if (IsMultiheaded(src) && !IsTrainEngine(src)) return_cmd_error(STR_REAR_ENGINE_FOLLOW_FRONT_ERROR);
if (IsRearDualheaded(src)) return_cmd_error(STR_REAR_ENGINE_FOLLOW_FRONT_ERROR);
/* when moving all wagons, we can't have the same src_head and dst_head */
if (HASBIT(p2, 0) && src_head == dst_head) return CommandCost();
@ -1221,7 +1221,7 @@ CommandCost CmdSellRailWagon(TileIndex tile, uint32 flags, uint32 p1, uint32 p2)
return_cmd_error(STR_881A_TRAINS_CAN_ONLY_BE_ALTERED);
}
if (IsMultiheaded(v) && !IsTrainEngine(v)) return_cmd_error(STR_REAR_ENGINE_FOLLOW_FRONT_ERROR);
if (IsRearDualheaded(v)) return_cmd_error(STR_REAR_ENGINE_FOLLOW_FRONT_ERROR);
if (flags & DC_EXEC) {
if (v == first && IsFrontEngine(first)) {

4
src/vehicle.cpp
View File

@ -500,7 +500,7 @@ bool IsEngineCountable(const Vehicle *v)
case VEH_AIRCRAFT: return IsNormalAircraft(v); // don't count plane shadows and helicopter rotors
case VEH_TRAIN:
return !IsArticulatedPart(v) && // tenders and other articulated parts
(!IsMultiheaded(v) || IsTrainEngine(v)); // rear parts of multiheaded engines
!IsRearDualheaded(v); // rear parts of multiheaded engines
case VEH_ROAD: return IsRoadVehFront(v);
case VEH_SHIP: return true;
default: return false; // Only count player buildable vehicles
@ -1733,7 +1733,7 @@ CommandCost CmdCloneVehicle(TileIndex tile, uint32 flags, uint32 p1, uint32 p2)
v = v_front;
do {
if (v->type == VEH_TRAIN && IsMultiheaded(v) && !IsTrainEngine(v)) {
if (v->type == VEH_TRAIN && IsRearDualheaded(v)) {
/* we build the rear ends of multiheaded trains with the front ones */
continue;
}