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Code Issues

(svn r1700) - Fix: Hacked clients can no longer be used to build vehicles that are not available yet (Hackykid)

release/0.4.5
bjarni 2005-01-27 21:00:05 +00:00
parent 1ae9e7b448
commit 99338d278d
6 changed files with 33 additions and 0 deletions
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2
aircraft_cmd.c
View File

@ -161,6 +161,8 @@ int32 CmdBuildAircraft(int x, int y, uint32 flags, uint32 p1, uint32 p2)
const AircraftVehicleInfo *avi = AircraftVehInfo(p1);
Engine *e;
if (!(IsEngineBuildable(p1, VEH_Aircraft))) return CMD_ERROR;
SET_EXPENSES_TYPE(EXPENSES_NEW_VEHICLES);
value = EstimateAircraftCost(p1);

24
engine.c
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@ -906,5 +906,29 @@ const ChunkHandler _engine_chunk_handlers[] = {
{ 'ENGS', LoadSave_ENGS, LoadSave_ENGS, CH_RIFF | CH_LAST},
};
/*
* returns true if an engine is valid, and it is of the specified type, and buildable by the current player, false otherwise
*
* engine = index of the engine to check
* type = the type the engine should be of (VEH_xxx)
*/
bool IsEngineBuildable(int engine, byte type) {
Engine *e;
// check if it's an engine that is in the engine array
if (0 > engine || engine >= TOTAL_NUM_ENGINES ) return false;
e = DEREF_ENGINE(engine);
// check if it's an engine of specified type
if (e->type != type) return false;
// check if it's available
if (!HASBIT(e->player_avail, _current_player)) return false;
return true;
}

1
engine.h
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@ -133,6 +133,7 @@ void AcceptEnginePreview(Engine *e, int player);
void LoadCustomEngineNames(void);
void DeleteCustomEngineNames(void);
bool IsEngineBuildable(int engine, byte type);
enum {
NUM_NORMAL_RAIL_ENGINES = 54,

2
roadveh_cmd.c
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@ -115,6 +115,8 @@ int32 CmdBuildRoadVeh(int x, int y, uint32 flags, uint32 p1, uint32 p2)
uint tile = TILE_FROM_XY(x,y);
Engine *e;
if (!(IsEngineBuildable(p1, VEH_Road))) return CMD_ERROR;
SET_EXPENSES_TYPE(EXPENSES_NEW_VEHICLES);
cost = EstimateRoadVehCost(p1);

2
ship_cmd.c
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@ -816,6 +816,8 @@ int32 CmdBuildShip(int x, int y, uint32 flags, uint32 p1, uint32 p2)
uint tile = TILE_FROM_XY(x,y);
Engine *e;
if (!(IsEngineBuildable(p1, VEH_Ship))) return CMD_ERROR;
SET_EXPENSES_TYPE(EXPENSES_NEW_VEHICLES);
value = EstimateShipCost(p1);

2
train_cmd.c
View File

@ -525,6 +525,8 @@ int32 CmdBuildRailVehicle(int x, int y, uint32 flags, uint32 p1, uint32 p2)
Engine *e;
uint tile;
if (!(IsEngineBuildable(p1, VEH_Train))) return CMD_ERROR;
_cmd_build_rail_veh_var1 = 0;
SET_EXPENSES_TYPE(EXPENSES_NEW_VEHICLES);