cpp/openttd-patchpack/source Files · src/newgrf_town.h

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rubidium

(svn r26708) -Codechange: replace C preprocessor with all kinds of options to prevent adding certain things to the result and the sed script to remove everything that shouldn't be in the resulting nfo file but came out of the C preprocessor by a small-ish awk program. This means no more breaking if a C preprocessor decides to add more data to the processed file (like GCC's inclusion of stdc-predef.h when not passing -nostdinc). It furthermore more than halfs the time needed for the assemble step of the extra GRF compilation

/* $Id$ */

/*
 * This file is part of OpenTTD.
 * OpenTTD is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, version 2.
 * OpenTTD is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
 * See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with OpenTTD. If not, see <http://www.gnu.org/licenses/>.
 */

/** @file newgrf_town.h Functions to handle the town part of NewGRF towns. */

#ifndef NEWGRF_TOWN_H
#define NEWGRF_TOWN_H

#include "town_type.h"
#include "newgrf_spritegroup.h"

/**
 * Scope resolver for a town.
 * @note Currently there is no direct town resolver; we only need to get town
 *       variable results from inside stations, house tiles and industries,
 *       and to check the town's persistent storage.
 */
struct TownScopeResolver : public ScopeResolver {
	Town *t;       ///< %Town of the scope.
	bool readonly; ///< When set, persistent storage of the town is read-only,

	TownScopeResolver(ResolverObject &ro, Town *t, bool readonly);

	virtual uint32 GetVariable(byte variable, uint32 parameter, bool *available) const;
	virtual void StorePSA(uint reg, int32 value);
};

/** Resolver of town properties. */
struct TownResolverObject : public ResolverObject {
	TownScopeResolver town_scope; ///< Scope resolver specific for towns.

	TownResolverObject(const struct GRFFile *grffile, Town *t, bool readonly);

	/* virtual */ ScopeResolver *GetScope(VarSpriteGroupScope scope = VSG_SCOPE_SELF, byte relative = 0)
	{
		switch (scope) {
			case VSG_SCOPE_SELF: return &town_scope;
			default: return ResolverObject::GetScope(scope, relative);
		}
	}
};

#endif /* NEWGRF_TOWN_H */