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(svn r19140) -Codechange: Move variables closer to their first use.

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alberth 2010-02-15 19:52:40 +00:00
parent 966f186bf8
commit 80225cf246
1 changed files with 26 additions and 41 deletions
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67
src/rail_cmd.cpp
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@ -174,16 +174,14 @@ static bool EnsureNoTrainOnTrack(TileIndex tile, Track track)
static bool CheckTrackCombination(TileIndex tile, TrackBits to_build, uint flags)
{
TrackBits current; // The current track layout
TrackBits future; // The track layout we want to build
_error_message = STR_ERROR_IMPOSSIBLE_TRACK_COMBINATION;
if (!IsPlainRail(tile)) return false;
/* So, we have a tile with tracks on it (and possibly signals). Let's see
* what tracks first */
current = GetTrackBits(tile);
future = current | to_build;
TrackBits current = GetTrackBits(tile); // The current track layout.
TrackBits future = current | to_build; // The track layout we want to build.
/* Are we really building something new? */
if (current == future) {
@ -367,20 +365,17 @@ static inline bool ValParamTrackOrientation(Track track) {return IsValidTrack(tr
*/
CommandCost CmdBuildSingleRail(TileIndex tile, DoCommandFlag flags, uint32 p1, uint32 p2, const char *text)
{
Slope tileh;
RailType railtype = (RailType)p1;
Track track = (Track)p2;
TrackBits trackbit;
CommandCost cost(EXPENSES_CONSTRUCTION);
CommandCost ret;
if (!ValParamRailtype(railtype) || !ValParamTrackOrientation(track)) return CMD_ERROR;
tileh = GetTileSlope(tile, NULL);
trackbit = TrackToTrackBits(track);
Slope tileh = GetTileSlope(tile, NULL);
TrackBits trackbit = TrackToTrackBits(track);
switch (GetTileType(tile)) {
case MP_RAILWAY:
case MP_RAILWAY: {
if (!CheckTileOwnership(tile)) return CMD_ERROR;
if (!IsPlainRail(tile)) return CMD_ERROR;
@ -392,7 +387,7 @@ CommandCost CmdBuildSingleRail(TileIndex tile, DoCommandFlag flags, uint32 p1, u
return CMD_ERROR;
}
ret = CheckRailSlope(tileh, trackbit, GetTrackBits(tile), tile);
CommandCost ret = CheckRailSlope(tileh, trackbit, GetTrackBits(tile), tile);
if (ret.Failed()) return ret;
cost.AddCost(ret);
@ -414,6 +409,7 @@ CommandCost CmdBuildSingleRail(TileIndex tile, DoCommandFlag flags, uint32 p1, u
SetTrackBits(tile, GetTrackBits(tile) | trackbit);
}
break;
}
case MP_ROAD:
#define M(x) (1 << (x))
@ -463,11 +459,11 @@ CommandCost CmdBuildSingleRail(TileIndex tile, DoCommandFlag flags, uint32 p1, u
}
/* FALLTHROUGH */
default:
default: {
/* Will there be flat water on the lower halftile? */
bool water_ground = IsTileType(tile, MP_WATER) && IsSlopeWithOneCornerRaised(tileh);
ret = CheckRailSlope(tileh, trackbit, TRACK_BIT_NONE, tile);
CommandCost ret = CheckRailSlope(tileh, trackbit, TRACK_BIT_NONE, tile);
if (ret.Failed()) return ret;
cost.AddCost(ret);
@ -485,6 +481,7 @@ CommandCost CmdBuildSingleRail(TileIndex tile, DoCommandFlag flags, uint32 p1, u
if (water_ground) SetRailGroundType(tile, RAIL_GROUND_WATER);
}
break;
}
}
if (flags & DC_EXEC) {
@ -508,12 +505,11 @@ CommandCost CmdBuildSingleRail(TileIndex tile, DoCommandFlag flags, uint32 p1, u
CommandCost CmdRemoveSingleRail(TileIndex tile, DoCommandFlag flags, uint32 p1, uint32 p2, const char *text)
{
Track track = (Track)p2;
TrackBits trackbit;
CommandCost cost(EXPENSES_CONSTRUCTION, _price[PR_CLEAR_RAIL] );
bool crossing = false;
if (!ValParamTrackOrientation((Track)p2)) return CMD_ERROR;
trackbit = TrackToTrackBits(track);
TrackBits trackbit = TrackToTrackBits(track);
/* Need to read tile owner now because it may change when the rail is removed
* Also, in case of floods, _current_company != owner
@ -679,17 +675,16 @@ static CommandCost ValidateAutoDrag(Trackdir *trackdir, TileIndex start, TileInd
int y = TileY(start);
int ex = TileX(end);
int ey = TileY(end);
int dx, dy, trdx, trdy;
if (!ValParamTrackOrientation(TrackdirToTrack(*trackdir))) return CMD_ERROR;
/* calculate delta x,y from start to end tile */
dx = ex - x;
dy = ey - y;
int dx = ex - x;
int dy = ey - y;
/* calculate delta x,y for the first direction */
trdx = _trackdelta[*trackdir].x;
trdy = _trackdelta[*trackdir].y;
int trdx = _trackdelta[*trackdir].x;
int trdy = _trackdelta[*trackdir].y;
if (!IsDiagonalTrackdir(*trackdir)) {
trdx += _trackdelta[*trackdir ^ 1].x;
@ -825,12 +820,10 @@ CommandCost CmdRemoveRailroadTrack(TileIndex tile, DoCommandFlag flags, uint32 p
*/
CommandCost CmdBuildTrainDepot(TileIndex tile, DoCommandFlag flags, uint32 p1, uint32 p2, const char *text)
{
Slope tileh;
/* check railtype and valid direction for depot (0 through 3), 4 in total */
if (!ValParamRailtype((RailType)p1)) return CMD_ERROR;
tileh = GetTileSlope(tile, NULL);
Slope tileh = GetTileSlope(tile, NULL);
DiagDirection dir = Extract<DiagDirection, 0>(p2);
@ -900,7 +893,6 @@ CommandCost CmdBuildSingleSignal(TileIndex tile, DoCommandFlag flags, uint32 p1,
bool convert_signal = HasBit(p1, 8); // convert button pressed
SignalType cycle_start = (SignalType)GB(p1, 9, 3);
SignalType cycle_stop = (SignalType)GB(p1, 12, 3);
CommandCost cost;
uint num_dir_cycle = GB(p1, 15, 2);
if (sigtype > SIGTYPE_LAST) return CMD_ERROR;
@ -932,6 +924,7 @@ CommandCost CmdBuildSingleSignal(TileIndex tile, DoCommandFlag flags, uint32 p1,
/* you can not convert a signal if no signal is on track */
if (convert_signal && !HasSignalOnTrack(tile, track)) return CMD_ERROR;
CommandCost cost;
if (!HasSignalOnTrack(tile, track)) {
/* build new signals */
cost = CommandCost(EXPENSES_CONSTRUCTION, _price[PR_BUILD_SIGNALS]);
@ -1117,10 +1110,7 @@ static bool CheckSignalAutoFill(TileIndex &tile, Trackdir &trackdir, int &signal
static CommandCost CmdSignalTrackHelper(TileIndex tile, DoCommandFlag flags, uint32 p1, uint32 p2, const char *text)
{
CommandCost ret, total_cost(EXPENSES_CONSTRUCTION);
int signal_ctr;
byte signals;
bool err = true;
TileIndex end_tile;
TileIndex start_tile = tile;
Track track = (Track)GB(p2, 0, 3);
@ -1132,7 +1122,7 @@ static CommandCost CmdSignalTrackHelper(TileIndex tile, DoCommandFlag flags, uin
byte signal_density = GB(p2, 24, 8);
if (p1 >= MapSize()) return CMD_ERROR;
end_tile = p1;
TileIndex end_tile = p1;
if (signal_density == 0 || signal_density > 20) return CMD_ERROR;
if (!IsPlainRailTile(tile)) return CMD_ERROR;
@ -1152,6 +1142,7 @@ static CommandCost CmdSignalTrackHelper(TileIndex tile, DoCommandFlag flags, uin
SignalType sigtype = (SignalType)GB(p2, 7, 3);
if (sigtype > SIGTYPE_LAST) return CMD_ERROR;
byte signals;
/* copy the signal-style of the first rail-piece if existing */
if (HasSignalOnTrack(tile, track)) {
signals = GetPresentSignals(tile) & SignalOnTrack(track);
@ -1179,7 +1170,7 @@ static CommandCost CmdSignalTrackHelper(TileIndex tile, DoCommandFlag flags, uin
* signals - is there a signal/semaphore on the first tile, copy its style (two-way/single-way)
* and convert all others to semaphore/signal
* remove - 1 remove signals, 0 build signals */
signal_ctr = 0;
int signal_ctr = 0;
for (;;) {
/* only build/remove signals with the specified density */
if ((remove && autofill) || signal_ctr % signal_density == 0) {
@ -1555,7 +1546,6 @@ static CommandCost RemoveTrainDepot(TileIndex tile, DoCommandFlag flags)
static CommandCost ClearTile_Track(TileIndex tile, DoCommandFlag flags)
{
CommandCost cost(EXPENSES_CONSTRUCTION);
CommandCost ret;
if (flags & DC_AUTO) {
if (!IsTileOwner(tile, _current_company)) {
@ -1579,7 +1569,7 @@ static CommandCost ClearTile_Track(TileIndex tile, DoCommandFlag flags)
TrackBits tracks = GetTrackBits(tile);
while (tracks != TRACK_BIT_NONE) {
Track track = RemoveFirstTrack(&tracks);
ret = DoCommand(tile, 0, track, flags, CMD_REMOVE_SINGLE_RAIL);
CommandCost ret = DoCommand(tile, 0, track, flags, CMD_REMOVE_SINGLE_RAIL);
if (ret.Failed()) return CMD_ERROR;
cost.AddCost(ret);
}
@ -2140,7 +2130,6 @@ static void DrawSignals(TileIndex tile, TrackBits rails)
static void DrawTile_Track(TileInfo *ti)
{
const RailtypeInfo *rti = GetRailTypeInfo(GetRailType(ti->tile));
SpriteID image;
_drawtile_track_palette = COMPANY_SPRITE_COLOUR(GetTileOwner(ti->tile));
@ -2169,6 +2158,7 @@ static void DrawTile_Track(TileInfo *ti)
dts = &_depot_gfx_table[GetRailDepotDirection(ti->tile)];
}
SpriteID image;
if (rti->UsesOverlay()) {
image = SPR_FLAT_GRASS_TILE;
} else {
@ -2642,30 +2632,25 @@ int TicksToLeaveDepot(const Train *v)
* @see vehicle_enter_tile_proc */
static VehicleEnterTileStatus VehicleEnter_Track(Vehicle *u, TileIndex tile, int x, int y)
{
byte fract_coord;
byte fract_coord_leave;
DiagDirection dir;
int length;
/* this routine applies only to trains in depot tiles */
if (u->type != VEH_TRAIN || !IsRailDepotTile(tile)) return VETSB_CONTINUE;
Train *v = Train::From(u);
/* depot direction */
dir = GetRailDepotDirection(tile);
DiagDirection dir = GetRailDepotDirection(tile);
/* calculate the point where the following wagon should be activated
* this depends on the length of the current vehicle */
length = v->tcache.cached_veh_length;
int length = v->tcache.cached_veh_length;
fract_coord_leave =
byte fract_coord_leave =
((_fractcoords_enter[dir] & 0x0F) + // x
(length + 1) * _deltacoord_leaveoffset[dir]) +
(((_fractcoords_enter[dir] >> 4) + // y
((length + 1) * _deltacoord_leaveoffset[dir + 4])) << 4);
fract_coord = (x & 0xF) + ((y & 0xF) << 4);
byte fract_coord = (x & 0xF) + ((y & 0xF) << 4);
if (_fractcoords_behind[dir] == fract_coord) {
/* make sure a train is not entering the tile from behind */