From 13692798e65b9627ebc5c6eabdcafdfa48660080 Mon Sep 17 00:00:00 2001
From: rubidium <rubidium@openttd.org>
Date: Sat, 14 Jul 2007 23:10:27 +0000
Subject: (svn r10567) -Add [FS#915]: a "group" with ungrouped vehicles. Patch
 by Matthias Wolf.

---
 src/group.h | 32 +++++++++++++++++++++++++++++++-
 1 file changed, 31 insertions(+), 1 deletion(-)

(limited to 'src/group.h')

diff --git a/src/group.h b/src/group.h
index 8c6667220..b0600db0f 100644
--- a/src/group.h
+++ b/src/group.h
@@ -8,6 +8,7 @@
 #include "oldpool.h"
 
 enum {
+	ALL_GROUP     = 0xFFFD,
 	DEFAULT_GROUP = 0xFFFE,
 	INVALID_GROUP = 0xFFFF,
 };
@@ -50,7 +51,17 @@ static inline bool IsValidGroupID(GroupID index)
 
 static inline bool IsDefaultGroupID(GroupID index)
 {
-	return (index == DEFAULT_GROUP);
+	return index == DEFAULT_GROUP;
+}
+
+/**
+ * Checks if a GroupID stands for all vehicles of a player
+ * @param id_g The GroupID to check
+ * @return true is id_g is identical to ALL_GROUP
+ */
+static inline bool IsAllGroupID(GroupID id_g)
+{
+	return id_g == ALL_GROUP;
 }
 
 #define FOR_ALL_GROUPS_FROM(g, start) for (g = GetGroup(start); g != NULL; g = (g->index + 1U < GetGroupPoolSize()) ? GetGroup(g->index + 1) : NULL) if (IsValidGroup(g))
@@ -69,6 +80,25 @@ static inline uint GetGroupArraySize(void)
 	return num;
 }
 
+/**
+ * Get the number of engines with EngineID id_e in the group with GroupID
+ * id_g
+ * @param id_g The GroupID of the group used
+ * @param id_e The EngineID of the engine to count
+ * @return The number of engines with EngineID id_e in the group
+ */
+static inline uint GetGroupNumEngines(GroupID id_g, EngineID id_e)
+{
+	if (IsValidGroupID(id_g)) return GetGroup(id_g)->num_engines[id_e];
+
+	uint num = GetPlayer(_local_player)->num_engines[id_e];
+	if (!IsDefaultGroupID(id_g)) return num;
+
+	const Group *g;
+	FOR_ALL_GROUPS(g) num -= g->num_engines[id_e];
+	return num;
+}
+
 static inline void IncreaseGroupNumVehicle(GroupID id_g)
 {
 	if (IsValidGroupID(id_g)) GetGroup(id_g)->num_vehicle++;
-- 
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