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(svn r2646) Change: [ntp] Fix uninitialized variable and add some more asserts to be able to debug an assert error.

release/0.4.5
ludde 2005-07-20 09:17:20 +00:00
parent 2379c59ab8
commit b8b14ac6c8
1 changed files with 9 additions and 1 deletions
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10
pathfind.c
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@ -664,11 +664,14 @@ static void NTPEnum(NewTrackPathFinder *tpf, TileIndex tile, uint direction)
FindLengthOfTunnelResult flotr;
int estimation;
// Need to have a special case for the start.
// We shouldn't call the callback for the current tile.
si.cur_length = 1; // Need to start at 1 cause 0 is a reserved value.
si.depth = 0;
si.state = 0;
si.first_track = 0xFF;
goto start_at;
for(;;) {
@ -690,7 +693,9 @@ callback_and_continue:
if (tpf->enum_proc(tile, tpf->userdata, si.first_track, si.cur_length))
return;
assert(si.track <= 13);
direction = _tpf_new_direction[si.track];
assert(direction <= 3);
start_at:
// If the tile is the entry tile of a tunnel, and we're not going out of the tunnel,
@ -715,6 +720,7 @@ start_at:
// a rail net and find the first intersection
tile_org = tile;
for(;;) {
assert(direction <= 3);
tile += TileOffsByDir(direction);
// too long search length? bail out.
@ -812,7 +818,7 @@ start_at:
// continue with the next track
direction = _tpf_new_direction[track];
assert(direction != 0xFF);
assert(direction <= 3);
// safety check if we're running around chasing our tail... (infinite loop)
if (tile == tile_org) {
@ -850,7 +856,9 @@ start_at:
si.depth++;
si.tile = tile;
do {
assert(direction <= 3);
si.track = _new_track[FIND_FIRST_BIT(bits)][direction];
assert(si.track <= 13);
si.priority = si.cur_length + estimation;
// out of stack items, bail out?