From 06c55863ca6b5bff147c2b11f08f7193fc2a9f81 Mon Sep 17 00:00:00 2001
From: rubidium <rubidium@openttd.org>
Date: Tue, 20 Oct 2009 12:31:11 +0000
Subject: [PATCH] (svn r17817) -Codechange: MakeWater actually made sea tiles,
 so rename it to MakeSea and unduplicate the code to make sea, rivers and
 canals.

---
 src/saveload/afterload.cpp |  4 +--
 src/water_cmd.cpp          |  8 +++---
 src/water_map.h            | 59 +++++++++++++++++++++++---------------
 3 files changed, 42 insertions(+), 29 deletions(-)

diff --git a/src/saveload/afterload.cpp b/src/saveload/afterload.cpp
index 0e663ee1c8..de87e71b54 100644
--- a/src/saveload/afterload.cpp
+++ b/src/saveload/afterload.cpp
@@ -926,7 +926,7 @@ bool AfterLoadGame()
 								MakeShore(t);
 							} else {
 								if (GetTileOwner(t) == OWNER_WATER) {
-									MakeWater(t);
+									MakeSea(t);
 								} else {
 									MakeCanal(t, GetTileOwner(t), Random());
 								}
@@ -1484,7 +1484,7 @@ bool AfterLoadGame()
 					if (IsWater(t)) {
 						Owner o = GetTileOwner(t);
 						if (o == OWNER_WATER) {
-							MakeWater(t);
+							MakeSea(t);
 						} else {
 							MakeCanal(t, o, Random());
 						}
diff --git a/src/water_cmd.cpp b/src/water_cmd.cpp
index 7d626c5e1d..2c9a3a9aff 100644
--- a/src/water_cmd.cpp
+++ b/src/water_cmd.cpp
@@ -165,7 +165,7 @@ void MakeWaterKeepingClass(TileIndex tile, Owner o)
 	if (wc == WATER_CLASS_SEA && z > 0) wc = WATER_CLASS_CANAL;
 
 	switch (wc) {
-		case WATER_CLASS_SEA:   MakeWater(tile);              break;
+		case WATER_CLASS_SEA:   MakeSea(tile);                break;
 		case WATER_CLASS_CANAL: MakeCanal(tile, o, Random()); break;
 		case WATER_CLASS_RIVER: MakeRiver(tile, Random());    break;
 		default:                DoClearSquare(tile);          break;
@@ -337,7 +337,7 @@ CommandCost CmdBuildCanal(TileIndex tile, DoCommandFlag flags, uint32 p1, uint32
 
 		if (flags & DC_EXEC) {
 			if (TileHeight(tile) == 0 && p2 == 1) {
-				MakeWater(tile);
+				MakeSea(tile);
 			} else if (p2 == 2) {
 				MakeRiver(tile, Random());
 			} else {
@@ -947,7 +947,7 @@ void DoFloodTile(TileIndex target)
 
 		/* flood flat tile */
 		if (CmdSucceeded(DoCommand(target, 0, 0, DC_EXEC, CMD_LANDSCAPE_CLEAR))) {
-			MakeWater(target);
+			MakeSea(target);
 			MarkTileDirtyByTile(target);
 			flooded = true;
 		}
@@ -1067,7 +1067,7 @@ void ConvertGroundTilesIntoWaterTiles()
 			 * during the generation. */
 			switch (slope) {
 				case SLOPE_FLAT:
-					MakeWater(tile);
+					MakeSea(tile);
 					break;
 
 				case SLOPE_N:
diff --git a/src/water_map.h b/src/water_map.h
index 7210c90ca5..b266aecc19 100644
--- a/src/water_map.h
+++ b/src/water_map.h
@@ -148,18 +148,6 @@ static inline byte GetWaterTileRandomBits(TileIndex t)
 }
 
 
-static inline void MakeWater(TileIndex t)
-{
-	SetTileType(t, MP_WATER);
-	SetTileOwner(t, OWNER_WATER);
-	_m[t].m2 = 0;
-	_m[t].m3 = WATER_CLASS_SEA;
-	_m[t].m4 = 0;
-	_m[t].m5 = 0;
-	SB(_m[t].m6, 2, 4, 0);
-	_me[t].m7 = 0;
-}
-
 static inline void MakeShore(TileIndex t)
 {
 	SetTileType(t, MP_WATER);
@@ -172,29 +160,54 @@ static inline void MakeShore(TileIndex t)
 	_me[t].m7 = 0;
 }
 
-static inline void MakeRiver(TileIndex t, uint8 random_bits)
+/**
+ * Helper function for making a watery tile.
+ * @param t The tile to change into water
+ * @param o The owner of the water
+ * @param wc The class of water the tile has to be
+ * @param random_bits Eventual random bits to be set for this tile
+ */
+static inline void MakeWater(TileIndex t, Owner o, WaterClass wc, uint8 random_bits)
 {
 	SetTileType(t, MP_WATER);
-	SetTileOwner(t, OWNER_WATER);
+	SetTileOwner(t, o);
 	_m[t].m2 = 0;
-	_m[t].m3 = WATER_CLASS_RIVER;
+	_m[t].m3 = wc;
 	_m[t].m4 = random_bits;
 	_m[t].m5 = 0;
 	SB(_m[t].m6, 2, 4, 0);
 	_me[t].m7 = 0;
 }
 
+/**
+ * Make a sea tile.
+ * @param t The tile to change into sea
+ */
+static inline void MakeSea(TileIndex t)
+{
+	MakeWater(t, OWNER_WATER, WATER_CLASS_SEA, 0);
+}
+
+/**
+ * Make a river tile
+ * @param t The tile to change into river
+ * @param random_bits Random bits to be set for this tile
+ */
+static inline void MakeRiver(TileIndex t, uint8 random_bits)
+{
+	MakeWater(t, OWNER_WATER, WATER_CLASS_RIVER, random_bits);
+}
+
+/**
+ * Make a canal tile
+ * @param t The tile to change into canal
+ * @param o The owner of the canal
+ * @param random_bits Random bits to be set for this tile
+ */
 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 = WATER_CLASS_CANAL;
-	_m[t].m4 = random_bits;
-	_m[t].m5 = 0;
-	SB(_m[t].m6, 2, 4, 0);
-	_me[t].m7 = 0;
+	MakeWater(t, o, WATER_CLASS_CANAL, random_bits);
 }
 
 static inline void MakeShipDepot(TileIndex t, Owner o, DepotID did, DepotPart base, Axis a, WaterClass original_water_class)