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(svn r15541) -Revert (r15399): 'v->cargo_type' is also used in other places, which cannot accept CT_INVALID.

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-Codechange: Add Engine::GetDefaultCargoType() and Engine::CanCarryCargo() and use them.
-Fix [FS#2617]: When articulated parts have no available default cargo, use the cargo type of the first part for livery selection.
-Change: To decide whether a vehicle is refittable do not test its current capacity for being zero, but always use the 'capacity property'.
  Note: The property is used unmodifed without calling CB 15/36. By setting it to a non-zero value and returning zero in the callback vehicles can be refitted to/from zero capacity for e.g. livery effects.
  Note: It is intentional that you cannot control refittability by CB 36.
This commit is contained in:
frosch
2009-02-21 12:52:41 +00:00
parent 9eb880ab43
commit abe4692da2
15 changed files with 171 additions and 163 deletions
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16
src/roadveh_cmd.cpp
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@@ -166,6 +166,9 @@ CommandCost CmdBuildRoadVeh(TileIndex tile, DoCommandFlag flags, uint32 p1, uint
if (!IsEngineBuildable(p1, VEH_ROAD, _current_company)) return_cmd_error(STR_ROAD_VEHICLE_NOT_AVAILABLE);
const Engine *e = GetEngine(p1);
/* Engines without valid cargo should not be available */
if (e->GetDefaultCargoType() == CT_INVALID) return CMD_ERROR;
CommandCost cost(EXPENSES_NEW_VEHICLES, e->GetCost());
if (flags & DC_QUERY_COST) return cost;
@@ -217,7 +220,7 @@ CommandCost CmdBuildRoadVeh(TileIndex tile, DoCommandFlag flags, uint32 p1, uint
v->vehstatus = VS_HIDDEN | VS_STOPPED | VS_DEFPAL;
v->spritenum = rvi->image_index;
v->cargo_type = rvi->cargo_type;
v->cargo_type = e->GetDefaultCargoType();
v->cargo_subtype = 0;
v->cargo_cap = rvi->capacity;
// v->cargo_count = 0;
@@ -262,7 +265,8 @@ CommandCost CmdBuildRoadVeh(TileIndex tile, DoCommandFlag flags, uint32 p1, uint
/* Call callback 36s after the whole consist has been constructed */
for (Vehicle *u = v; u != NULL; u = u->Next()) {
u->cargo_cap = GetVehicleProperty(u, 0x0F, u->cargo_cap);
/* Cargo capacity is zero if and only if the vehicle cannot carry anything */
if (u->cargo_cap != 0) u->cargo_cap = GetVehicleProperty(u, 0x0F, u->cargo_cap);
}
VehiclePositionChanged(v);
@@ -2009,7 +2013,8 @@ CommandCost CmdRefitRoadVeh(TileIndex tile, DoCommandFlag flags, uint32 p1, uint
* [Refit] button near each wagon. */
if (!CanRefitTo(v->engine_type, new_cid)) continue;
if (v->cargo_cap == 0) continue;
const Engine *e = GetEngine(v->engine_type);
if (!e->CanCarryCargo()) continue;
if (HasBit(EngInfo(v->engine_type)->callbackmask, CBM_VEHICLE_REFIT_CAPACITY)) {
/* Back up the cargo type */
@@ -2028,14 +2033,13 @@ CommandCost CmdRefitRoadVeh(TileIndex tile, DoCommandFlag flags, uint32 p1, uint
if (capacity == CALLBACK_FAILED) {
/* callback failed or not used, use default capacity */
const RoadVehicleInfo *rvi = RoadVehInfo(v->engine_type);
CargoID old_cid = rvi->cargo_type;
CargoID old_cid = e->GetDefaultCargoType();
/* normally, the capacity depends on the cargo type, a vehicle can
* carry twice as much mail/goods as normal cargo, and four times as
* many passengers
*/
capacity = GetVehicleProperty(v, 0x0F, rvi->capacity);
capacity = GetVehicleProperty(v, 0x0F, e->u.road.capacity);
switch (old_cid) {
case CT_PASSENGERS: break;
case CT_MAIL: