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authorpeter1138 <peter1138@openttd.org>2008-01-20 18:30:53 +0000
committerpeter1138 <peter1138@openttd.org>2008-01-20 18:30:53 +0000
commitb967c9918e2eb6b6bc31ba10c9cb0e394273b218 (patch)
tree87986eebd3e482588635177f36db036e4a2f4124
parent80931cdd131f4a47eb5f106dc38b7d0259a020f0 (diff)
downloadopenttd-b967c9918e2eb6b6bc31ba10c9cb0e394273b218.tar.xz
(svn r11934) -Codechange: add persistent random data for river and canal tiles.
-rw-r--r--docs/landscape.html8
-rw-r--r--src/newgrf_canal.cpp6
-rw-r--r--src/openttd.cpp2
-rw-r--r--src/water_cmd.cpp10
-rw-r--r--src/water_map.h13
5 files changed, 27 insertions, 12 deletions
diff --git a/docs/landscape.html b/docs/landscape.html
index cd6a0cf12..ec208b944 100644
--- a/docs/landscape.html
+++ b/docs/landscape.html
@@ -865,6 +865,11 @@
</tr>
<tr>
+ <td noswap valign=top><tt>02</tt>&nbsp; </td>
+ <td align=left>river</td>
+ </tr>
+
+ <tr>
<td nowrap valign=top><tt>10</tt>..<tt>1B</tt>&nbsp; </td>
<td align=left>canal locks
<table>
@@ -945,7 +950,8 @@
</tr>
</table>
</li>
- <li>m4: Owner of the water</li>
+ <li>m4: Owner of the water when ship depot</li>
+ <li>m4: Random data for canal or river tiles</li>
<li>m6 bits 7..6 : Possibility of a bridge above, in the <a href="#bridge_direction">direction specified</a></li>
<li>m6 bits 1..0 : <a href="#tropic_zone">Tropic zone definition</a></li>
</ul>
diff --git a/src/newgrf_canal.cpp b/src/newgrf_canal.cpp
index f7cc633d7..a2a89d13b 100644
--- a/src/newgrf_canal.cpp
+++ b/src/newgrf_canal.cpp
@@ -11,6 +11,7 @@
#include "newgrf_spritegroup.h"
#include "newgrf_canal.h"
#include "tile_map.h"
+#include "water_map.h"
/** Table of canal 'feature' sprite groups */
@@ -21,7 +22,7 @@ const SpriteGroup *_canal_sg[CF_END];
* three functions are stubs. */
static uint32 CanalGetRandomBits(const ResolverObject *object)
{
- return 0;
+ return GetWaterTileRandomBits(object->u.canal.tile);
}
@@ -47,6 +48,9 @@ static uint32 CanalGetVariable(const ResolverObject *object, byte variable, byte
case 0x81:
return GetTerrainType(tile);
+
+ case 0x83:
+ return GetWaterTileRandomBits(tile);
}
DEBUG(grf, 1, "Unhandled canal property 0x%02X", variable);
diff --git a/src/openttd.cpp b/src/openttd.cpp
index cff06481b..19436ea1e 100644
--- a/src/openttd.cpp
+++ b/src/openttd.cpp
@@ -1710,7 +1710,7 @@ bool AfterLoadGame()
if (GB(_m[t].m5, 3, 2) == 0) {
MakeClear(t, CLEAR_GRASS, 3);
} else {
- MakeCanal(t, (GetTileOwner(t) == OWNER_WATER) ? OWNER_NONE : GetTileOwner(t));
+ MakeCanal(t, (GetTileOwner(t) == OWNER_WATER) ? OWNER_NONE : GetTileOwner(t), Random());
}
}
SetBridgeMiddle(t, axis);
diff --git a/src/water_cmd.cpp b/src/water_cmd.cpp
index ac90ef20d..eeed4a696 100644
--- a/src/water_cmd.cpp
+++ b/src/water_cmd.cpp
@@ -56,7 +56,7 @@ void MakeWaterOrCanalDependingOnSurroundings(TileIndex t, Owner o)
/* Non-sealevel -> canal */
if (TileHeight(t) != 0) {
- MakeCanal(t, o);
+ MakeCanal(t, o, Random());
return;
}
@@ -71,7 +71,7 @@ void MakeWaterOrCanalDependingOnSurroundings(TileIndex t, Owner o)
}
}
if (has_canal || !has_water) {
- MakeCanal(t, o);
+ MakeCanal(t, o, Random());
} else {
MakeWater(t);
}
@@ -128,7 +128,7 @@ void MakeWaterOrCanalDependingOnOwner(TileIndex tile, Owner o)
if (o == OWNER_WATER) {
MakeWater(tile);
} else {
- MakeCanal(tile, o);
+ MakeCanal(tile, o, Random());
}
}
@@ -305,9 +305,9 @@ CommandCost CmdBuildCanal(TileIndex tile, uint32 flags, uint32 p1, uint32 p2)
if (TileHeight(tile) == 0 && p2 == 1) {
MakeWater(tile);
} else if (p2 == 2) {
- MakeRiver(tile);
+ MakeRiver(tile, Random());
} else {
- MakeCanal(tile, _current_player);
+ MakeCanal(tile, _current_player, Random());
}
MarkTileDirtyByTile(tile);
MarkTilesAroundDirty(tile);
diff --git a/src/water_map.h b/src/water_map.h
index 98177631b..93ec67a9d 100644
--- a/src/water_map.h
+++ b/src/water_map.h
@@ -108,6 +108,11 @@ static inline byte GetSection(TileIndex t)
return GB(_m[t].m5, 0, 4);
}
+static inline byte GetWaterTileRandomBits(TileIndex t)
+{
+ return _m[t].m4;
+}
+
static inline void MakeWater(TileIndex t)
{
@@ -129,24 +134,24 @@ static inline void MakeShore(TileIndex t)
_m[t].m5 = 1;
}
-static inline void MakeRiver(TileIndex t)
+static inline void MakeRiver(TileIndex t, uint8 random_bits)
{
SetTileType(t, MP_WATER);
SetTileOwner(t, OWNER_WATER);
_m[t].m2 = 0;
_m[t].m3 = 0;
- _m[t].m4 = 0;
+ _m[t].m4 = random_bits;
_m[t].m5 = 2;
}
-static inline void MakeCanal(TileIndex t, Owner o)
+static inline void MakeCanal(TileIndex t, Owner o, uint8 random_bits)
{
assert(o != OWNER_WATER);
SetTileType(t, MP_WATER);
SetTileOwner(t, o);
_m[t].m2 = 0;
_m[t].m3 = 0;
- _m[t].m4 = 0;
+ _m[t].m4 = random_bits;
_m[t].m5 = 0;
}