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(svn r3784) Add a type and functions to handle direction changes

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tron
2006-03-08 07:48:56 +00:00
parent fbe939b31f
commit ecabf8a5f0
4 changed files with 45 additions and 17 deletions
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9
vehicle.c
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@@ -1930,7 +1930,7 @@ static const Direction _new_direction_table[] = {
Direction GetDirectionTowards(const Vehicle* v, int x, int y)
{
Direction dir;
byte dirdiff;
DirDiff dirdiff;
int i = 0;
if (y >= v->y_pos) {
@@ -1945,10 +1945,9 @@ Direction GetDirectionTowards(const Vehicle* v, int x, int y)
dir = v->direction;
dirdiff = _new_direction_table[i] - dir;
if (dirdiff == 0)
return dir;
return (dir+((dirdiff&7)<5?1:-1)) & 7;
dirdiff = DirDifference(_new_direction_table[i], dir);
if (dirdiff == DIRDIFF_SAME) return dir;
return ChangeDir(dir, dirdiff > DIRDIFF_REVERSE ? DIRDIFF_45LEFT : DIRDIFF_45RIGHT);
}
Trackdir GetVehicleTrackdir(const Vehicle* v)