--- a/src/industry_cmd.cpp Sat Feb 09 02:49:33 2008 +0000
+++ b/src/industry_cmd.cpp Sat Feb 09 03:03:09 2008 +0000
@@ -1415,6 +1415,16 @@
return true;
}
+/** Production level maximum, minimum and default values.
+ * It is not a value been really used in order to change, but rather an indicator
+ * of how the industry is behaving. */
+enum ProductionLevels {
+ PRODLEVEL_CLOSURE = 0x00, ///< signal set to actually close the industry
+ PRODLEVEL_MINIMUM = 0x04, ///< below this level, the industry is set to be closing
+ PRODLEVEL_DEFAULT = 0x10, ///< default level set when the industry is created
+ PRODLEVEL_MAXIMUM = 0x80, ///< the industry is running at full speed
+};
+
static void DoCreateNewIndustry(Industry *i, TileIndex tile, int type, const IndustryTileTable *it, byte layout, const Town *t, Owner owner)
{
const IndustrySpec *indspec = GetIndustrySpec(type);
@@ -1503,7 +1513,7 @@
if (!_generating_world) i->last_month_production[0] = i->last_month_production[1] = 0;
- i->prod_level = 0x10;
+ i->prod_level = PRODLEVEL_DEFAULT;
do {
TileIndex cur_tile = tile + ToTileIndexDiff(it->ti);
@@ -2126,7 +2136,7 @@
}
/* Increase if needed */
- while (mul-- != 0 && i->prod_level < 0x80) {
+ while (mul-- != 0 && i->prod_level < PRODLEVEL_MAXIMUM) {
i->prod_level <<= 1;
i->production_rate[0] = min(i->production_rate[0] * 2, 0xFF);
i->production_rate[1] = min(i->production_rate[1] * 2, 0xFF);
@@ -2135,7 +2145,7 @@
/* Decrease if needed */
while (div-- != 0 && !closeit) {
- if (i->prod_level == 4) {
+ if (i->prod_level == PRODLEVEL_MINIMUM) {
closeit = true;
} else {
i->prod_level >>= 1;
@@ -2147,16 +2157,16 @@
/* Increase or Decreasing the production level if needed */
if (increment != 0) {
- if (increment < 0 && i->prod_level == 4) {
+ if (increment < 0 && i->prod_level == PRODLEVEL_MINIMUM) {
closeit = true;
} else {
- i->prod_level = ClampU(i->prod_level + increment, 4, 0x80);
+ i->prod_level = ClampU(i->prod_level + increment, PRODLEVEL_MINIMUM, PRODLEVEL_MAXIMUM);
}
}
/* Close if needed and allowed */
if (closeit && !CheckIndustryCloseDownProtection(i->type)) {
- i->prod_level = 0;
+ i->prod_level = PRODLEVEL_CLOSURE;
str = indspec->closure_text;
}
@@ -2200,7 +2210,7 @@
FOR_ALL_INDUSTRIES(i) {
UpdateIndustryStatistics(i);
- if (i->prod_level == 0) {
+ if (i->prod_level == PRODLEVEL_CLOSURE) {
delete i;
} else {
ChangeIndustryProduction(i, true);