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(svn r4927) Replace 3 big ifs (which regard foundations) by a bit less confusing code

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tron
2006-05-20 18:03:22 +00:00
parent d508e76ada
commit b95c1faca9
3 changed files with 39 additions and 44 deletions
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33
rail_cmd.c
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@@ -153,27 +153,24 @@ const TrackBits _valid_tileh_slopes[2][15] = {
uint GetRailFoundation(Slope tileh, TrackBits bits)
{
int i;
uint i;
if ((~_valid_tileh_slopes[0][tileh] & bits) == 0)
return 0;
if ((~_valid_tileh_slopes[0][tileh] & bits) == 0) return 0;
if ((~_valid_tileh_slopes[1][tileh] & bits) == 0) return tileh;
if ((~_valid_tileh_slopes[1][tileh] & bits) == 0)
return tileh;
if ((
(i = 0, tileh == SLOPE_W) ||
(i += 2, tileh == SLOPE_S) ||
(i += 2, tileh == SLOPE_E) ||
(i += 2, tileh == SLOPE_N)
) && (
bits == TRACK_BIT_X ||
(i++, bits == TRACK_BIT_Y)
)) {
return i + 15;
} else {
return 0;
switch (bits) {
case TRACK_BIT_X: i = 0; break;
case TRACK_BIT_Y: i = 1; break;
default: return 0;
}
switch (tileh) {
case SLOPE_W: i += 0; break;
case SLOPE_S: i += 2; break;
case SLOPE_E: i += 4; break;
case SLOPE_N: i += 6; break;
default: return 0;
}
return i + 15;
}