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annotate src/bridge_map.cpp @ 8284:dbb7bfe0e95c draft

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(svn r11848) -Codechange: New class-based drop down list functionality. Lists are now dynamically generated, and can include parameters, or be extended however needed.
author peter1138 <peter1138@openttd.org>
date Mon, 14 Jan 2008 16:10:58 +0000
parents e02014b06c7f
children a4e5b5d2837c
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5584
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1 /* $Id$ */
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2
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3 /** @file bridge_map.cpp Map accessor functions for bridges. */
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4
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5 #include "stdafx.h"
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6 #include "openttd.h"
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7 #include "bridge_map.h"
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8 #include "bridge.h"
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9 #include "variables.h"
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10 #include "landscape.h"
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11 #include "tunnelbridge_map.h"
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14 TileIndex GetBridgeEnd(TileIndex tile, DiagDirection dir)
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15 {
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16 TileIndexDiff delta = TileOffsByDiagDir(dir);
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18 dir = ReverseDiagDir(dir);
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19 do {
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20 tile += delta;
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21 } while (!IsBridgeTile(tile) || GetTunnelBridgeDirection(tile) != dir);
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23 return tile;
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24 }
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27 TileIndex GetNorthernBridgeEnd(TileIndex t)
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28 {
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29 return GetBridgeEnd(t, ReverseDiagDir(AxisToDiagDir(GetBridgeAxis(t))));
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30 }
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33 TileIndex GetSouthernBridgeEnd(TileIndex t)
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34 {
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35 return GetBridgeEnd(t, AxisToDiagDir(GetBridgeAxis(t)));
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36 }
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39 TileIndex GetOtherBridgeEnd(TileIndex tile)
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40 {
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41 assert(IsBridgeTile(tile));
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42 return GetBridgeEnd(tile, GetTunnelBridgeDirection(tile));
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43 }
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45 uint GetBridgeHeight(TileIndex t)
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46 {
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47 uint h;
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48 Slope tileh = GetTileSlope(t, &h);
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49 Foundation f = GetBridgeFoundation(tileh, DiagDirToAxis(GetTunnelBridgeDirection(t)));
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50
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51 /* one height level extra for the ramp */
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52 return h + TILE_HEIGHT + ApplyFoundationToSlope(f, &tileh);
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53 }