From 7586143e3bafe14247953cc3c0b322d32ffe3ac8 Mon Sep 17 00:00:00 2001
From: belugas <belugas@openttd.org>
Date: Fri, 8 Jun 2007 15:48:48 +0000
Subject: (svn r10063) -Codechange: Change VARDEF for extern -CodeChange: Add
 the count of industries, basic support for variable 67, var action02
 forindustries

---
 src/industry.h | 35 ++++++++++++++++++++++++++++++++---
 1 file changed, 32 insertions(+), 3 deletions(-)

(limited to 'src/industry.h')

diff --git a/src/industry.h b/src/industry.h
index 09cb34071..38d1dca2f 100644
--- a/src/industry.h
+++ b/src/industry.h
@@ -197,7 +197,6 @@ static inline bool IsValidIndustryID(IndustryID index)
 	return index < GetIndustryPoolSize() && IsValidIndustry(GetIndustry(index));
 }
 
-VARDEF int _total_industries; //general counter
 
 static inline IndustryID GetMaxIndustryIndex()
 {
@@ -214,6 +213,36 @@ static inline uint GetNumIndustries()
 	return _total_industries;
 }
 
+extern int _total_industries;                      // general counter
+extern uint16 _industry_counts[NUM_INDUSTRYTYPES]; // Number of industries per type ingame
+
+/** Increment the count of industries for this type
+ * @param type IndustryType to increment
+ * @pre type < INVALID_INDUSTRYTYPE */
+static inline void IncIndustryTypeCount(IndustryType type)
+{
+	assert(type < INVALID_INDUSTRYTYPE);
+	_industry_counts[type]++;
+}
+
+/** Decrement the count of industries for this type
+ * @param type IndustryType to decrement
+ * @pre type < INVALID_INDUSTRYTYPE */
+static inline void DecIndustryTypeCount(IndustryType type)
+{
+	assert(type < INVALID_INDUSTRYTYPE);
+	_industry_counts[type]--;
+}
+
+/** get the count of industries for this type
+ * @param type IndustryType to query
+ * @pre type < INVALID_INDUSTRYTYPE */
+static inline uint8 GetIndustryTypeCount(IndustryType type)
+{
+	assert(type < INVALID_INDUSTRYTYPE);
+	return min(_industry_counts[type], 0xFF); // callback expects only a byte, so cut it
+}
+
 /**
  * Return a random valid industry.
  */
@@ -249,8 +278,8 @@ static inline void DeleteIndustry(Industry *i)
 #define FOR_ALL_INDUSTRIES_FROM(i, start) for (i = GetIndustry(start); i != NULL; i = (i->index + 1U < GetIndustryPoolSize()) ? GetIndustry(i->index + 1U) : NULL) if (IsValidIndustry(i))
 #define FOR_ALL_INDUSTRIES(i) FOR_ALL_INDUSTRIES_FROM(i, 0)
 
-VARDEF const Industry** _industry_sort;
-VARDEF bool _industry_sort_dirty;
+extern const Industry **_industry_sort;
+extern bool _industry_sort_dirty;
 
 enum {
 	IT_COAL_MINE           =   0,
-- 
cgit v1.2.3-54-g00ecf