(svn r1771) -Add: Industries are now dynamic (up to 64k industries). Generating

1kx1k maps should now be much faster, and give more than just oil-stuff ;)

industry.h

@@ -1,6 +1,8 @@
 #ifndef INDUSTRY_H
 #define INDUSTRY_H
 
+#include "pool.h"
+
 struct Industry {
 	TileIndex xy;
 	byte width; /* swapped order of w/h with town */
@@ -27,22 +29,32 @@ struct Industry {
 	uint16 index;
 };
 
-VARDEF int _total_industries; // For the AI: the amount of industries active
-
-VARDEF Industry _industries[250];
-VARDEF uint _industries_size;
-
-VARDEF uint16 *_industry_sort;
+extern MemoryPool _industry_pool;
 
+/**
+ * Get the pointer to the industry with index 'index'
+ */
 static inline Industry *GetIndustry(uint index)
 {
-	assert(index < _industries_size);
-	return &_industries[index];
+	return (Industry*)GetItemFromPool(&_industry_pool, index);
 }
 
-#define FOR_ALL_INDUSTRIES(i) for(i = _industries; i != &_industries[_industries_size]; i++)
+/**
+ * Get the current size of the IndustryPool
+ */
+static inline uint16 GetIndustryPoolSize(void)
+{
+	return _industry_pool.total_items;
+}
 
+#define FOR_ALL_INDUSTRIES_FROM(i, start) for (i = GetIndustry(start); i != NULL; i = (i->index + 1 < GetIndustryPoolSize()) ? GetIndustry(i->index + 1) : NULL)
+#define FOR_ALL_INDUSTRIES(i) FOR_ALL_INDUSTRIES_FROM(i, 0)
+
+VARDEF int _total_industries; // For the AI: the amount of industries active
+
+VARDEF uint16 *_industry_sort;
 VARDEF bool _industry_sort_dirty;
+
 void DeleteIndustry(Industry *is);
 
 enum {

industry_cmd.c

@@ -13,6 +13,26 @@
 #include "economy.h"
 #include "sound.h"
 
+enum {
+	/* Max industries: 64000 (8 * 8000) */
+	INDUSTRY_POOL_BLOCK_SIZE_BITS = 3,       /* In bits, so (1 << 3) == 8 */
+	INDUSTRY_POOL_MAX_BLOCKS      = 8000,
+};
+
+/**
+ * Called if a new block is added to the industry-pool
+ */
+void IndustryPoolNewBlock(uint start_item)
+{
+	Industry *i;
+
+	FOR_ALL_INDUSTRIES_FROM(i, start_item)
+		i->index = start_item++;
+}
+
+/* Initialize the industry-pool */
+MemoryPool _industry_pool = { "Industry", INDUSTRY_POOL_MAX_BLOCKS, INDUSTRY_POOL_BLOCK_SIZE_BITS, sizeof(Industry), &IndustryPoolNewBlock, 0, 0, NULL };
+
 byte _industry_sound_ctr;
 TileIndex _industry_sound_tile;
 
@@ -1406,12 +1426,22 @@ static Industry *AllocateIndustry(void)
 
 	FOR_ALL_INDUSTRIES(i) {
 		if (i->xy == 0) {
+			uint index = i->index;
+
 			if (i->index > _total_industries)
 				_total_industries = i->index;
 
+			memset(i, 0, sizeof(Industry));
+			i->index = index;
+
 			return i;
 		}
 	}
+
+	/* Check if we can add a block to the pool */
+	if (AddBlockToPool(&_industry_pool))
+		return AllocateIndustry();
+
 	return NULL;
 }
 
@@ -1827,13 +1857,11 @@ void IndustryMonthlyLoop(void)
 			UpdateIndustryStatistics(i);
 	}
 
-	i = GetIndustry(RandomRange(_industries_size));
-
-	if (i->xy == 0) {
-		uint32 r;
-		if (CHANCE16I(1,9,r=Random()))
-			MaybeNewIndustry(r);
+	/* 3% chance that we start a new industry */
+	if (CHANCE16(3, 100)) {
+		MaybeNewIndustry(Random());
 	} else if (!_patches.smooth_economy) {
+		i = GetIndustry(RandomRange(_total_industries));
 		MaybeCloseIndustry(i);
 	}
 
@@ -1847,14 +1875,9 @@ void IndustryMonthlyLoop(void)
 
 void InitializeIndustries(void)
 {
-	Industry *i;
-	int j;
 
-	memset(_industries, 0, sizeof(_industries[0]) * _industries_size);
-
-	j = 0;
-	FOR_ALL_INDUSTRIES(i)
-		i->index = j++;
+	CleanPool(&_industry_pool);
+	AddBlockToPool(&_industry_pool);
 
 	_total_industries = 0;
 	_industry_sort_dirty = true;
@@ -1924,12 +1947,20 @@ static void Save_INDY(void)
 static void Load_INDY(void)
 {
 	int index;
-	_total_industries = 0;
-	while ((index = SlIterateArray()) != -1) {
-		Industry *i = GetIndustry(index);
 
+	_total_industries = 0;
+
+	while ((index = SlIterateArray()) != -1) {
+		Industry *i;
+
+		if (!AddBlockIfNeeded(&_industry_pool, index))
+			error("Industries: failed loading savegame: too many industries");
+
+		i = GetIndustry(index);
 		SlObject(i, _industry_desc);
-		if (index > _total_industries) _total_industries = index;
+
+		if (index > _total_industries)
+			_total_industries = index;
 	}
 }
 

industry_gui.c

@@ -493,7 +493,7 @@ static byte _industry_sort_order;
 static int CDECL GeneralIndustrySorter(const void *a, const void *b)
 {
 	char buf1[96];
-	byte val;
+	uint16 val;
 	Industry *i = GetIndustry(*(const uint16*)a);
 	Industry *j = GetIndustry(*(const uint16*)b);
 	int r = 0;
@@ -557,7 +557,7 @@ static void MakeSortedIndustryList(void)
 	int n = 0;
 
 	/* Create array for sorting */
-	_industry_sort = realloc(_industry_sort, _industries_size * sizeof(_industry_sort[0]));
+	_industry_sort = realloc(_industry_sort, GetIndustryPoolSize() * sizeof(_industry_sort[0]));
 	if (_industry_sort == NULL)
 		error("Could not allocate memory for the industry-sorting-list");
 

oldloader.c

@@ -647,6 +647,9 @@ static void FixIndustry(OldIndustry *o, int num)
 		if (o->xy == 0)
 			continue;
 
+		if (!AddBlockIfNeeded(&_industry_pool, j))
+			error("Industries: failed loading savegame: too many industries");
+
 		i = GetIndustry(j);
 
 		i->xy = o->xy;

ttd.c

@@ -495,34 +495,27 @@ static void ParseResolution(int res[2], char *s)
 static void InitializeDynamicVariables(void)
 {
 	/* Dynamic stuff needs to be initialized somewhere... */
-	_stations_size = lengthof(_stations);
-	_station_sort = NULL;
-
+	_stations_size  = lengthof(_stations);
 	_roadstops_size = lengthof(_roadstops);
+	_vehicles_size  = lengthof(_vehicles);
+	_sign_size      = lengthof(_sign_list);
+	_orders_size    = lengthof(_orders);
 
-	_vehicles_size = lengthof(_vehicles);
-	_vehicle_sort = NULL;
-
-	_town_sort = NULL;
-
-	_industries_size = lengthof(_industries);
+	_station_sort  = NULL;
+	_vehicle_sort  = NULL;
+	_town_sort     = NULL;
 	_industry_sort = NULL;
-
-	_sign_size = lengthof(_sign_list);
-	_orders_size = lengthof(_orders);
 }
 
 static void UnInitializeDynamicVariables(void)
 {
 	/* Dynamic stuff needs to be free'd somewhere... */
 	CleanPool(&_town_pool);
+	CleanPool(&_industry_pool);
 
 	free(_station_sort);
-
 	free(_vehicle_sort);
-
 	free(_town_sort);
-
 	free(_industry_sort);
 }