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Fix e66cec8f86: Permit loading of industry production callback with invalid cargo type.

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It is only an error if the invalid result is actually used. This will be silently ignored at the moment.
It is still an error if a duplicate cargo type is returned.
This commit is contained in:
peter1138
2019-03-10 17:45:15 +00:00
committed by Patric Stout
parent 3a97b541af
commit 38e93182c5
4 changed files with 24 additions and 4 deletions
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12
src/newgrf.cpp
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@@ -5005,7 +5005,12 @@ static void NewSpriteGroup(ByteReader *buf)
for (uint i = 0; i < group->num_input; i++) {
byte rawcargo = buf->ReadByte();
CargoID cargo = GetCargoTranslation(rawcargo, _cur.grffile);
if (std::find(group->cargo_input, group->cargo_input + i, cargo) != group->cargo_input + i) {
if (cargo == CT_INVALID) {
/* The mapped cargo is invalid. This is permitted at this point,
* as long as the result is not used. Mark it invalid so this
* can be tested later. */
group->version = 0xFF;
} else if (std::find(group->cargo_input, group->cargo_input + i, cargo) != group->cargo_input + i) {
GRFError *error = DisableGrf(STR_NEWGRF_ERROR_INDPROD_CALLBACK);
error->data = stredup("duplicate input cargo");
return;
@@ -5022,7 +5027,10 @@ static void NewSpriteGroup(ByteReader *buf)
for (uint i = 0; i < group->num_output; i++) {
byte rawcargo = buf->ReadByte();
CargoID cargo = GetCargoTranslation(rawcargo, _cur.grffile);
if (std::find(group->cargo_output, group->cargo_output + i, cargo) != group->cargo_output + i) {
if (cargo == CT_INVALID) {
/* Mark this result as invalid to use */
group->version = 0xFF;
} else if (std::find(group->cargo_output, group->cargo_output + i, cargo) != group->cargo_output + i) {
GRFError *error = DisableGrf(STR_NEWGRF_ERROR_INDPROD_CALLBACK);
error->data = stredup("duplicate output cargo");
return;