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-rw-r--r--src/industry_cmd.cpp79
-rw-r--r--src/newgrf.cpp2
-rw-r--r--src/newgrf_callbacks.h4
3 files changed, 60 insertions, 25 deletions
diff --git a/src/industry_cmd.cpp b/src/industry_cmd.cpp
index 58e194428..39d0fb14f 100644
--- a/src/industry_cmd.cpp
+++ b/src/industry_cmd.cpp
@@ -31,6 +31,7 @@
#include "water_map.h"
#include "tree_map.h"
#include "cargotype.h"
+#include "newgrf.h"
#include "newgrf_commons.h"
#include "newgrf_industries.h"
#include "newgrf_industrytiles.h"
@@ -1802,15 +1803,43 @@ static bool CheckIndustryCloseDownProtection(IndustryType type)
*/
static void ChangeIndustryProduction(Industry *i, bool monthly)
{
- if (monthly != _patches.smooth_economy) return;
-
+ extern StringID MapGRFStringID(uint32 grfid, StringID str);
StringID str = STR_NULL;
bool closeit = false;
const IndustrySpec *indspec = GetIndustrySpec(i->type);
+ bool standard = true;
+ bool suppress_message = false;
+ byte div = 0;
+ byte mul = 0;
+
+ if (HASBIT(indspec->callback_flags, monthly ? CBM_IND_MONTHLYPROD_CHANGE : CBM_IND_PRODUCTION_CHANGE)) {
+ uint16 res = GetIndustryCallback(monthly ? CBID_INDUSTRY_MONTHLYPROD_CHANGE : CBID_INDUSTRY_PRODUCTION_CHANGE, 0, Random(), i, i->type, i->xy);
+ if (res != CALLBACK_FAILED) {
+ standard = false;
+ suppress_message = HASBIT(res, 7);
+ /* Get the custom message if any */
+ if (HASBIT(res, 8)) str = MapGRFStringID(indspec->grf_prop.grffile->grfid, GB(GetRegister(0x100), 0, 16));
+ res = GB(res, 0, 4);
+ switch(res) {
+ default: NOT_REACHED();
+ case 0x0: break; // Do nothing, but show the custom message if any
+ case 0x1: div = 1; break; // Halve industry production. If production reaches the quarter of the default, the industry is closed instead.
+ case 0x2: mul = 1; break; // Double industry production if it hasn't reached eight times of the original yet.
+ case 0x3: closeit = true; break; // The industry announces imminent closure, and is physically removed from the map next month.
+ case 0x4: standard = true; break; // Do the standard random production change as if this industry was a primary one.
+ case 0x5: case 0x6: case 0x7: // Divide production by 4, 8, 16
+ case 0x8: div = res - 0x5; break; // Divide production by 32
+ case 0x9: case 0xA: case 0xB: // Multiply production by 4, 8, 16
+ case 0xC: mul = res - 0x9; break; // Multiply production by 32
+ }
+ }
+ }
- if (indspec->life_type == INDUSTRYLIFE_BLACK_HOLE) return;
+ if (standard && monthly != _patches.smooth_economy) return;
- if ((indspec->life_type & (INDUSTRYLIFE_ORGANIC | INDUSTRYLIFE_EXTRACTIVE)) != 0) {
+ if (standard && indspec->life_type == INDUSTRYLIFE_BLACK_HOLE) return;
+
+ if (standard && (indspec->life_type & (INDUSTRYLIFE_ORGANIC | INDUSTRYLIFE_EXTRACTIVE)) != 0) {
/* decrease or increase */
bool only_decrease = (indspec->behaviour & INDUSTRYBEH_DONT_INCR_PROD) && _opt.landscape == LT_TEMPERATE;
@@ -1858,41 +1887,47 @@ static void ChangeIndustryProduction(Industry *i, bool monthly)
if (only_decrease || CHANCE16(1, 3)) {
/* If you transport > 60%, 66% chance we increase, else 33% chance we increase */
if (!only_decrease && (i->last_month_pct_transported[0] > 153) != CHANCE16(1, 3)) {
- /* Increase production */
- if (i->prod_level != 0x80) {
- 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);
- if (str == STR_NULL) str = indspec->production_up_text;
- }
+ mul = 1; // Increase production
} else {
- /* Decrease production */
- if (i->prod_level == 4) {
- closeit = true;
- } else {
- i->prod_level >>= 1;
- i->production_rate[0] = (i->production_rate[0] + 1) >> 1;
- i->production_rate[1] = (i->production_rate[1] + 1) >> 1;
- if (str == STR_NULL) str = indspec->production_down_text;
- }
+ div = 1; // Decrease production
}
}
}
}
- if (indspec->life_type & INDUSTRYLIFE_PROCESSING) {
+ if (standard && indspec->life_type & INDUSTRYLIFE_PROCESSING) {
if ( (byte)(_cur_year - i->last_prod_year) >= 5 && CHANCE16(1, _patches.smooth_economy ? 180 : 2)) {
closeit = true;
}
}
+ /* Increase if needed */
+ while (mul-- != 0 && i->prod_level < 0x80) {
+ 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);
+ if (str == STR_NULL) str = indspec->production_up_text;
+ }
+
+ /* Decrease if needed */
+ while (div-- != 0 && !closeit) {
+ if (i->prod_level == 4) {
+ closeit = true;
+ } else {
+ i->prod_level >>= 1;
+ i->production_rate[0] = (i->production_rate[0] + 1) >> 1;
+ i->production_rate[1] = (i->production_rate[1] + 1) >> 1;
+ if (str == STR_NULL) str = indspec->production_down_text;
+ }
+ }
+
/* Close if needed and allowed */
if (closeit && !CheckIndustryCloseDownProtection(i->type)) {
i->prod_level = 0;
str = indspec->closure_text;
}
- if (str != STR_NULL) {
+ if (!suppress_message && str != STR_NULL) {
SetDParam(0, i->index);
AddNewsItem(str,
NEWS_FLAGS(NM_THIN, NF_VIEWPORT | NF_TILE, closeit ? NT_OPENCLOSE : NT_ECONOMY, 0),
diff --git a/src/newgrf.cpp b/src/newgrf.cpp
index 9037ea638..b4db6d772 100644
--- a/src/newgrf.cpp
+++ b/src/newgrf.cpp
@@ -244,7 +244,7 @@ static GRFFile *GetFileByFilename(const char *filename)
* @param str StringID that we want to have the equivalent in OoenTTD
* @return the properly adjusted StringID
*/
-static StringID MapGRFStringID(uint32 grfid, StringID str)
+StringID MapGRFStringID(uint32 grfid, StringID str)
{
/* 0xD0 and 0xDC stand for all the TextIDs in the range
* of 0xD000 (misc graphics texts) and 0xDC00 (misc persistent texts).
diff --git a/src/newgrf_callbacks.h b/src/newgrf_callbacks.h
index e62523a60..049502924 100644
--- a/src/newgrf_callbacks.h
+++ b/src/newgrf_callbacks.h
@@ -103,7 +103,7 @@ enum CallbackID {
CBID_INDUSTRY_LOCATION = 0x28,
/** Called on production changes, so it can be adjusted. */
- CBID_INDUSTRY_PRODUCTION_CHANGE = 0x29, // not implemented
+ CBID_INDUSTRY_PRODUCTION_CHANGE = 0x29,
/** Called to determine which cargoes a town building should accept. */
CBID_HOUSE_ACCEPT_CARGO = 0x2A,
@@ -141,7 +141,7 @@ enum CallbackID {
CBID_VEHICLE_AUTOREPLACE_SELECTION = 0x34,
/** Called monthly on production changes, so it can be adjusted more frequently */
- CBID_INDUSTRY_MONTHLYPROD_CHANGE = 0x35, // not implemented
+ CBID_INDUSTRY_MONTHLYPROD_CHANGE = 0x35,
/** Called to modify various vehicle properties. Callback parameter 1
* specifies the property index, as used in Action 0, to change. */
generated by cgit v1.2.3-70-g09d2 (git 2.47.0) at 2024-12-01 05:22:44 +0000