From 7520ef8f3325bcaec2496e52e0d351767193da28 Mon Sep 17 00:00:00 2001
From: tron <tron@openttd.org>
Date: Thu, 13 Oct 2005 16:00:14 +0000
Subject: [PATCH] (svn r3037) Don't deduce the sprites for tunnels and level
 crossings from magic numbers, but fetch them from the central rail info
 array. This is a preparation step for electrified rails

---
 rail.h              |  2 ++
 railtypes.h         | 15 ++++++++++++---
 road_cmd.c          |  7 +++----
 table/sprites.h     | 11 +++++++++--
 table/tunnel_land.h |  5 -----
 tunnelbridge_cmd.c  | 12 ++++++------
 6 files changed, 32 insertions(+), 20 deletions(-)
 delete mode 100644 table/tunnel_land.h

diff --git a/rail.h b/rail.h
index be03813be2..215a291dd7 100644
--- a/rail.h
+++ b/rail.h
@@ -154,6 +154,8 @@ typedef struct RailtypeInfo {
 		SpriteID single_s;     ///< single piece of rail in the southern corner
 		SpriteID single_e;     ///< single piece of rail in the eastern corner
 		SpriteID single_w;     ///< single piece of rail in the western corner
+		SpriteID crossing;     ///< level crossing, rail in X direction
+		SpriteID tunnel;       ///< tunnel sprites base
 	} base_sprites;
 
 	/** struct containing the sprites for the rail GUI. @note only sprites referred to
diff --git a/railtypes.h b/railtypes.h
index 74cd0768fd..9e09e3e65f 100644
--- a/railtypes.h
+++ b/railtypes.h
@@ -10,7 +10,10 @@ const RailtypeInfo _railtypes[RAILTYPE_END] = {
 	/** Railway */
 	{ /* Main Sprites */
 		{ SPR_RAIL_TRACK_Y, SPR_RAIL_TRACK_N_S, SPR_RAIL_TRACK_BASE, SPR_RAIL_SINGLE_Y, SPR_RAIL_SINGLE_X,
-			SPR_RAIL_SINGLE_NORTH, SPR_RAIL_SINGLE_SOUTH, SPR_RAIL_SINGLE_EAST, SPR_RAIL_SINGLE_WEST },
+			SPR_RAIL_SINGLE_NORTH, SPR_RAIL_SINGLE_SOUTH, SPR_RAIL_SINGLE_EAST, SPR_RAIL_SINGLE_WEST,
+			SPR_CROSSING_OFF_X_RAIL,
+			SPR_TUNNEL_ENTRY_REAR_RAIL
+		},
 
 		/* GUI sprites */
 		{ 0x4E3, 0x4E4, 0x4E5, 0x4E6,
@@ -32,7 +35,10 @@ const RailtypeInfo _railtypes[RAILTYPE_END] = {
 	/** Monorail */
 	{ /* Main Sprites */
 		{ SPR_MONO_TRACK_Y, SPR_MONO_TRACK_N_S, SPR_MONO_TRACK_BASE, SPR_MONO_SINGLE_Y, SPR_MONO_SINGLE_X,
-			SPR_MONO_SINGLE_NORTH, SPR_MONO_SINGLE_SOUTH, SPR_MONO_SINGLE_EAST, SPR_MONO_SINGLE_WEST },
+			SPR_MONO_SINGLE_NORTH, SPR_MONO_SINGLE_SOUTH, SPR_MONO_SINGLE_EAST, SPR_MONO_SINGLE_WEST,
+			SPR_CROSSING_OFF_X_MONO,
+			SPR_TUNNEL_ENTRY_REAR_MONO
+		},
 
 		/* GUI sprites */
 		{ 0x4E7, 0x4E8, 0x4E9, 0x4EA,
@@ -54,7 +60,10 @@ const RailtypeInfo _railtypes[RAILTYPE_END] = {
 	/** Maglev */
 	{ /* Main sprites */
 		{ SPR_MGLV_TRACK_Y, SPR_MGLV_TRACK_N_S, SPR_MGLV_TRACK_BASE, SPR_MGLV_SINGLE_Y, SPR_MGLV_SINGLE_X,
-			SPR_MGLV_SINGLE_NORTH, SPR_MGLV_SINGLE_SOUTH, SPR_MGLV_SINGLE_EAST, SPR_MGLV_SINGLE_WEST },
+			SPR_MGLV_SINGLE_NORTH, SPR_MGLV_SINGLE_SOUTH, SPR_MGLV_SINGLE_EAST, SPR_MGLV_SINGLE_WEST,
+			SPR_CROSSING_OFF_X_MAGLEV,
+			SPR_TUNNEL_ENTRY_REAR_MAGLEV
+		},
 
 		/* GUI sprites */
 		{ 0x4EB, 0x4EC, 0x4EE, 0x4ED,
diff --git a/road_cmd.c b/road_cmd.c
index eea3d00b49..6064e2204e 100644
--- a/road_cmd.c
+++ b/road_cmd.c
@@ -850,10 +850,9 @@ static void DrawTile_Road(TileInfo *ti)
 		int f = GetRoadFoundation(ti->tileh, ti->map5 & 0xF);
 		if (f) DrawFoundation(ti, f);
 
-		image = 0x55B;
+		image = GetRailTypeInfo(GB(_m[ti->tile].m4, 0, 4))->base_sprites.crossing;
 
-		if ( (ti->map5 & 8) != 0)
-			image--;
+		if (GB(ti->map5, 3, 1) == 0) image++; /* direction */
 
 		if ( (ti->map5 & 4) != 0)
 			image += 2;
@@ -866,7 +865,7 @@ static void DrawTile_Road(TileInfo *ti)
 			if (m2 > 1) image += 4;
 		}
 
-		DrawGroundSprite(image + GB(_m[ti->tile].m4, 0, 4) * 12);
+		DrawGroundSprite(image);
 
 		if (_debug_pbs_level >= 1) {
 			byte pbs = PBSTileReserved(ti->tile);
diff --git a/table/sprites.h b/table/sprites.h
index 1537a6b839..442282b33d 100644
--- a/table/sprites.h
+++ b/table/sprites.h
@@ -407,8 +407,15 @@ enum Sprites {
 	SPR_SHIPLIFT_Y_DOWN_TOP_FRONT			= SPR_CANALS_BASE + 32,
 
 	/* Sprites for tunnels and bridges */
-	SPR_TUNNEL_ENTRY_REAR_RAIL	= 2365,
-	SPR_TUNNEL_ENTRY_REAR_ROAD	= 2389,
+	SPR_TUNNEL_ENTRY_REAR_RAIL   = 2365,
+	SPR_TUNNEL_ENTRY_REAR_MONO   = 2373,
+	SPR_TUNNEL_ENTRY_REAR_MAGLEV = 2381,
+	SPR_TUNNEL_ENTRY_REAR_ROAD   = 2389,
+
+	/* Level crossings */
+	SPR_CROSSING_OFF_X_RAIL   = 1370,
+	SPR_CROSSING_OFF_X_MONO   = 1382,
+	SPR_CROSSING_OFF_X_MAGLEV = 1394,
 
 		/* bridge type sprites */
 
diff --git a/table/tunnel_land.h b/table/tunnel_land.h
deleted file mode 100644
index db75c163c1..0000000000
--- a/table/tunnel_land.h
+++ /dev/null
@@ -1,5 +0,0 @@
-/* $Id$ */
-
-static const SpriteID _draw_tunnel_table_1[] = {
-	0x93D, 0x955,
-};
diff --git a/tunnelbridge_cmd.c b/tunnelbridge_cmd.c
index d51ffe6f38..c163296693 100644
--- a/tunnelbridge_cmd.c
+++ b/tunnelbridge_cmd.c
@@ -24,7 +24,6 @@
 #include "bridge.h"
 
 #include "table/bridge_land.h"
-#include "table/tunnel_land.h"
 
 extern const byte _track_sloped_sprites[14];
 extern const SpriteID _water_shore_sprites[15];
@@ -1040,13 +1039,14 @@ static void DrawTile_TunnelBridge(TileInfo *ti)
 
 	// draw tunnel?
 	if ((ti->map5 & 0xF0) == 0) {
-		/* railway type */
-		image = GB(_m[ti->tile].m3, 0, 4) * 8;
+		if (GB(ti->map5, 2, 2) == 0) { /* Rail tunnel? */
+			image = GetRailTypeInfo(GB(_m[ti->tile].m3, 0, 4))->base_sprites.tunnel;
+		} else {
+			image = SPR_TUNNEL_ENTRY_REAR_ROAD;
+		}
 
-		if (ice)
-			image += 32;
+		if (ice) image += 32;
 
-		image += _draw_tunnel_table_1[GB(ti->map5, 2, 2)];
 		image += GB(ti->map5, 0, 2) * 2;
 		DrawGroundSprite(image);