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@ -499,6 +499,12 @@ CommandCost CmdBuildTunnel(TileIndex start_tile, uint32 flags, uint32 p1, uint32
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}
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}
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end_tile = start_tile;
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end_tile = start_tile;
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/** Tile shift coeficient. Will decrease for very long tunnels to avoid exponential growth of price*/
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int tiles_coef = 3;
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/** Number of tiles from start of tunnel */
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int tiles = 0;
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for (;;) {
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for (;;) {
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end_tile += delta;
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end_tile += delta;
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end_tileh = GetTileSlope(end_tile, &end_z);
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end_tileh = GetTileSlope(end_tile, &end_z);
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@ -509,8 +515,11 @@ CommandCost CmdBuildTunnel(TileIndex start_tile, uint32 flags, uint32 p1, uint32
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return_cmd_error(STR_5003_ANOTHER_TUNNEL_IN_THE_WAY);
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return_cmd_error(STR_5003_ANOTHER_TUNNEL_IN_THE_WAY);
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}
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}
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tiles++;
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if (tiles == 25 || tiles == 50 || tiles == 100 || tiles == 200 || tiles == 400 || tiles == 800) tiles_coef++;
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cost.AddCost(_price.build_tunnel);
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cost.AddCost(_price.build_tunnel);
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cost.AddCost(cost.GetCost() >> 3); // add a multiplier for longer tunnels
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cost.AddCost(cost.GetCost() >> tiles_coef); // add a multiplier for longer tunnels
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}
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}
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/* Add the cost of the entrance */
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/* Add the cost of the entrance */
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