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(svn r4703) - NewGRF: add support for callback 0x1D, "can wagon be attached". This can be used to disallow freight wagons to be placed in passenger trains, along with other uses.

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peter1138
2006-05-02 21:43:47 +00:00
parent a38c8605b0
commit 6c3cc7fd16
2 changed files with 14 additions and 0 deletions
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12
train_cmd.c
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@@ -27,6 +27,7 @@
#include "train.h"
#include "newgrf_callbacks.h"
#include "newgrf_engine.h"
#include "newgrf_text.h"
#include "direction.h"
static bool TrainCheckIfLineEnds(Vehicle *v);
@@ -1076,6 +1077,17 @@ int32 CmdMoveRailVehicle(TileIndex tile, uint32 flags, uint32 p1, uint32 p2)
if (flags & DC_EXEC) src->unitnumber = unit_num;
}
if (dst_head != NULL) {
/* Check NewGRF Callback 0x1D */
uint16 callback = GetVehicleCallbackParent(CBID_TRAIN_ALLOW_WAGON_ATTACH, 0, 0, dst_head->engine_type, src, dst_head);
if (callback != CALLBACK_FAILED) {
if (callback == 0xFD) return CMD_ERROR;
if (callback < 0xFD) {
StringID error = GetGRFStringID(GetEngineGRFID(dst_head->engine_type), 0xD000 + callback);
return_cmd_error(error);
}
}
}
/* do it? */
if (flags & DC_EXEC) {