1 files changed, 88 insertions, 0 deletions
diff --git a/src/engine_base.h b/src/engine_base.h
new file mode 100644
index 000000000..cff59fcb2
--- /dev/null
+++ b/src/engine_base.h
@@ -0,0 +1,88 @@
+/* $Id$ */
+
+/** @file engine_base.h Base class for engines. */
+
+#ifndef ENGINE_BASE_H
+#define ENGINE_BASE_H
+
+#include "engine_type.h"
+#include "oldpool.h"
+
+DECLARE_OLD_POOL(Engine, Engine, 6, 10000)
+
+struct Engine : PoolItem<Engine, EngineID, &_Engine_pool> {
+	char *name;         ///< Custom name of engine
+	Date intro_date;
+	Date age;
+	uint16 reliability;
+	uint16 reliability_spd_dec;
+	uint16 reliability_start, reliability_max, reliability_final;
+	uint16 duration_phase_1, duration_phase_2, duration_phase_3;
+	byte lifelength;
+	byte flags;
+	uint8 preview_player_rank;
+	byte preview_wait;
+	byte player_avail;
+	uint8 image_index; ///< Original vehicle image index
+	VehicleType type; ///< type, ie VEH_ROAD, VEH_TRAIN, etc.
+
+	EngineInfo info;
+
+	union {
+		RailVehicleInfo rail;
+		RoadVehicleInfo road;
+		ShipVehicleInfo ship;
+		AircraftVehicleInfo air;
+	} u;
+
+	/* NewGRF related data */
+	const struct GRFFile *grffile;
+	const struct SpriteGroup *group[NUM_CARGO + 2];
+	uint16 internal_id;                             ///< ID within the GRF file
+	uint16 overrides_count;
+	struct WagonOverride *overrides;
+	uint16 list_position;
+
+	Engine();
+	Engine(VehicleType type, EngineID base);
+	~Engine();
+
+	inline bool IsValid() const { return this->info.climates != 0; }
+};
+
+static inline bool IsEngineIndex(uint index)
+{
+	return index < GetEnginePoolSize();
+}
+
+#define FOR_ALL_ENGINES_FROM(e, start) for (e = GetEngine(start); e != NULL; e = (e->index + 1U < GetEnginePoolSize()) ? GetEngine(e->index + 1U) : NULL) if (e->IsValid())
+#define FOR_ALL_ENGINES(e) FOR_ALL_ENGINES_FROM(e, 0)
+
+#define FOR_ALL_ENGINES_OF_TYPE(e, engine_type) FOR_ALL_ENGINES(e) if (e->type == engine_type)
+
+static inline const EngineInfo *EngInfo(EngineID e)
+{
+	return &GetEngine(e)->info;
+}
+
+static inline const RailVehicleInfo *RailVehInfo(EngineID e)
+{
+	return &GetEngine(e)->u.rail;
+}
+
+static inline const RoadVehicleInfo *RoadVehInfo(EngineID e)
+{
+	return &GetEngine(e)->u.road;
+}
+
+static inline const ShipVehicleInfo *ShipVehInfo(EngineID e)
+{
+	return &GetEngine(e)->u.ship;
+}
+
+static inline const AircraftVehicleInfo *AircraftVehInfo(EngineID e)
+{
+	return &GetEngine(e)->u.air;
+}
+
+#endif /* ENGINE_TYPE_H */