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author | belugas <belugas@openttd.org> | 2008-01-23 17:08:35 +0000 |
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committer | belugas <belugas@openttd.org> | 2008-01-23 17:08:35 +0000 |
commit | 4a3e135086fb2c29221a70e1bd0adf279f36c3bd (patch) | |
tree | 9a885c0e543d6bc0b57a61d035fa6563b4b145aa /src/newgrf.cpp | |
parent | 0b888ccc001c3157d1990467036a557783ca38be (diff) | |
download | openttd-4a3e135086fb2c29221a70e1bd0adf279f36c3bd.tar.xz |
(svn r11961) -Feature[newGRF]: Add support for Action 0D, var 13: informations about current map size.
Diffstat (limited to 'src/newgrf.cpp')
-rw-r--r-- | src/newgrf.cpp | 32 |
1 files changed, 32 insertions, 0 deletions
diff --git a/src/newgrf.cpp b/src/newgrf.cpp index d4514d38d..c4e44df5a 100644 --- a/src/newgrf.cpp +++ b/src/newgrf.cpp @@ -44,6 +44,7 @@ #include "road_func.h" #include "player_base.h" #include "settings_type.h" +#include "map_func.h" #include "table/strings.h" #include "table/sprites.h" @@ -4025,15 +4026,46 @@ static uint32 GetPatchVariable(uint8 param) switch (param) { /* start year - 1920 */ case 0x0B: return max(_patches.starting_year, ORIGINAL_BASE_YEAR) - ORIGINAL_BASE_YEAR; + /* freight trains weight factor */ case 0x0E: return _patches.freight_trains; + /* empty wagon speed increase */ case 0x0F: return 0; + /* plane speed factor */ case 0x10: return 4; + /* 2CC colormap base sprite */ case 0x11: return SPR_2CCMAP_BASE; + /* map size: format = -MABXYSS + * M : the type of map + * bit 0 : set : squared map. Bit 1 is now not relevant + * clear : rectangle map. Bit 1 will indicate the bigger edge of the map + * bit 1 : set : Y is the bigger edge. Bit 0 is clear + * clear : X is the bigger edge. + * A : minimum edge(log2) of the map + * B : maximum edge(log2) of the map + * XY : edges(log2) of each side of the map. + * SS : combination of both X and Y, thus giving the size(log2) of the map + */ + case 0x13: { + byte map_bits = 0; + byte log_X = MapLogX() - 6; + byte log_Y = MapLogY() - 6; + byte max_edge = max(log_X, log_Y); + + if (log_X == log_Y) { // we have a squared map, since both edges are identical + SetBit(map_bits ,0); + } else { + if (max_edge == log_Y) SetBit(map_bits, 1); // edge Y been the biggest, mark it + } + + return (map_bits << 24) | (min(log_X, log_Y) << 20) | (max_edge << 16) | + (log_X << 12) | (log_Y << 8) | (log_X + log_Y); + } + default: grfmsg(2, "ParamSet: Unknown Patch variable 0x%02X.", param); return 0; |