(svn r13674) -Fix [FS#2127]: crash when drawing a non-real sprite. The drawing of the non-real sprite is caused when two NewGRFs replace the same sprite and the first replaces it with a real sprite (and thus assumes it remains a real sprite) and the second replaces it with a non-real sprite. OpenTTD already looked at whether the sprite to load should be seen as a real or non-real sprite, but it failed to replace non-real sprites with a substitute real sprite when getting the sprite from the cache.

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/* $Id$ */

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/** @file group_type.h Types of a group. */

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#ifndef GROUP_TYPE_H

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#define GROUP_TYPE_H

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typedef uint16 GroupID;

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enum {

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	ALL_GROUP     = 0xFFFD,

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	DEFAULT_GROUP = 0xFFFE, ///< ungrouped vehicles are in this group.

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	INVALID_GROUP = 0xFFFF,

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};

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struct Group;

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#endif /* GROUP_TYPE_H */