1 files changed, 118 insertions, 0 deletions
diff --git a/src/order_base.h b/src/order_base.h
new file mode 100644
index 000000000..8cc3a29f4
--- /dev/null
+++ b/src/order_base.h
@@ -0,0 +1,118 @@
+/* $Id$ */
+
+/** @file order_base.h */
+
+#ifndef ORDER_BASE_H
+#define ORDER_BASE_H
+
+#include "order_type.h"
+#include "oldpool.h"
+#include "core/bitmath_func.hpp"
+#include "cargo_type.h"
+
+DECLARE_OLD_POOL(Order, Order, 6, 1000)
+
+/* If you change this, keep in mind that it is saved on 3 places:
+ * - Load_ORDR, all the global orders
+ * - Vehicle -> current_order
+ * - REF_ORDER (all REFs are currently limited to 16 bits!!)
+ */
+struct Order : PoolItem<Order, OrderID, &_Order_pool> {
+	Order *next;          ///< Pointer to next order. If NULL, end of list
+
+	OrderTypeByte type;
+	uint8  flags;
+	DestinationID dest;   ///< The destionation of the order.
+
+	CargoID refit_cargo; // Refit CargoID
+	byte refit_subtype; // Refit subtype
+
+	uint16 wait_time;    ///< How long in ticks to wait at the destination.
+	uint16 travel_time;  ///< How long in ticks the journey to this destination should take.
+
+	Order() : refit_cargo(CT_NO_REFIT) {}
+	~Order() { this->type = OT_NOTHING; }
+
+	/**
+	 * Check if a Order really exists.
+	 */
+	inline bool IsValid() const { return this->type != OT_NOTHING; }
+
+	void Free();
+	void FreeChain();
+};
+
+static inline VehicleOrderID GetMaxOrderIndex()
+{
+	/* TODO - This isn't the real content of the function, but
+	 *  with the new pool-system this will be replaced with one that
+	 *  _really_ returns the highest index. Now it just returns
+	 *  the next safe value we are sure about everything is below.
+	 */
+	return GetOrderPoolSize() - 1;
+}
+
+static inline VehicleOrderID GetNumOrders()
+{
+	return GetOrderPoolSize();
+}
+
+inline void Order::Free()
+{
+	this->type  = OT_NOTHING;
+	this->flags = 0;
+	this->dest  = 0;
+	this->next  = NULL;
+}
+
+inline void Order::FreeChain()
+{
+	if (next != NULL) next->FreeChain();
+	delete this;
+}
+
+#define FOR_ALL_ORDERS_FROM(order, start) for (order = GetOrder(start); order != NULL; order = (order->index + 1U < GetOrderPoolSize()) ? GetOrder(order->index + 1U) : NULL) if (order->IsValid())
+#define FOR_ALL_ORDERS(order) FOR_ALL_ORDERS_FROM(order, 0)
+
+
+#define FOR_VEHICLE_ORDERS(v, order) for (order = v->orders; order != NULL; order = order->next)
+
+static inline bool HasOrderPoolFree(uint amount)
+{
+	const Order *order;
+
+	/* There is always room if not all blocks in the pool are reserved */
+	if (_Order_pool.CanAllocateMoreBlocks()) return true;
+
+	FOR_ALL_ORDERS(order) if (!order->IsValid() && --amount == 0) return true;
+
+	return false;
+}
+
+
+/* Pack and unpack routines */
+
+static inline uint32 PackOrder(const Order *order)
+{
+	return order->dest << 16 | order->flags << 8 | order->type;
+}
+
+static inline Order UnpackOrder(uint32 packed)
+{
+	Order order;
+	order.type    = (OrderType)GB(packed,  0,  8);
+	order.flags   = GB(packed,  8,  8);
+	order.dest    = GB(packed, 16, 16);
+	order.next    = NULL;
+	order.index   = 0; // avoid compiler warning
+	order.refit_cargo   = CT_NO_REFIT;
+	order.refit_subtype = 0;
+	order.wait_time     = 0;
+	order.travel_time   = 0;
+	return order;
+}
+
+void AssignOrder(Order *order, Order data);
+Order UnpackOldOrder(uint16 packed);
+
+#endif /* ORDER_H */