From b08b171fcf9652b4d9de09b24497cde08fb14890 Mon Sep 17 00:00:00 2001
From: Marko Lindqvist <cazfi74@gmail.com>
Date: Fri, 10 Sep 2021 21:56:36 +0300
Subject: [PATCH 33/33] Rulesave: Save comment about research tech_cost_style
 settings

See osdn #42853

Signed-off-by: Marko Lindqvist <cazfi74@gmail.com>
---
 data/ruledit/comments-3.2.txt | 23 +++++++++++++++++++++++
 tools/ruleutil/comments.c     | 12 ++++++++++++
 tools/ruleutil/comments.h     |  1 +
 tools/ruleutil/rulesave.c     |  2 ++
 4 files changed, 38 insertions(+)

diff --git a/data/ruledit/comments-3.2.txt b/data/ruledit/comments-3.2.txt
index 99a88e5881..0767d116e5 100644
--- a/data/ruledit/comments-3.2.txt
+++ b/data/ruledit/comments-3.2.txt
@@ -1317,3 +1317,26 @@ radius_permanent = "\n\
 ; a squared value, so the radius of the ring of tiles which are workable\n\
 ; but not locked (or vice versa) varies but the area is constant.\n\
 "
+
+tech_cost_style = "\
+; Method of calculating technology costs\n\
+;   \"Civ I|II\"      - Civ (I|II) style. Every new tech add base_tech_cost to\n\
+;                     cost of next tech.\n\
+;   \"Classic\"       - Cost of technology is:\n\
+;                       base_tech_cost * (1 + reqs) * sqrt(1 + reqs) / 2\n\
+;                     where reqs == number of requirement for tech, counted\n\
+;                     recursively.\n\
+;   \"Classic+\"      - Cost are read from tech.ruleset. Missing costs are\n\
+;                     generated by style \"Classic\".\n\
+;   \"Experimental\"  - Cost of technology is:\n\
+;                       base_tech_cost * (reqs^2 / (1 + sqrt(sqrt(reqs + 1)))\n\
+;                                         - 0.5)\n\
+;                     where reqs == number of requirement for tech, counted\n\
+;                     recursively. Initial techs` cost will be base_tech_cost.\n\
+;   \"Experimental+\" - Cost are read from tech.ruleset. Missing costs are\n\
+;                     generated by style \"Experimental\".\n\
+;   \"Linear\"        - Cost of technology is:\n\
+;                     base_tech_cost * reqs\n\
+;                     where reqs == number of requirement for tech, counted\n\
+;                     recursively.\
+"
diff --git a/tools/ruleutil/comments.c b/tools/ruleutil/comments.c
index f8d2482620..5f115f0406 100644
--- a/tools/ruleutil/comments.c
+++ b/tools/ruleutil/comments.c
@@ -66,6 +66,7 @@ static struct {
   char *actions_ui_names;
   char *actions_dc_initial_odds;
   char *borders_radius_permanent;
+  char *research_tech_cost_style;
 } comments_storage;
 
 /**********************************************************************//**
@@ -167,6 +168,8 @@ bool comments_load(void)
                "entrydoc.dc_initial_odds");
   comment_load(comments_storage.borders_radius_permanent, comment_file,
                "entrydoc.radius_permanent");
+  comment_load(comments_storage.research_tech_cost_style, comment_file,
+               "entrydoc.tech_cost_style");
 
   secfile_check_unused(comment_file);
   secfile_destroy(comment_file);
@@ -543,3 +546,12 @@ void comment_borders_radius_permanent(struct section_file *sfile)
   comment_entry_write(sfile, comments_storage.borders_radius_permanent,
                       "borders");
 }
+
+/**********************************************************************//**
+  Write research tech_cost_style settings header.
+**************************************************************************/
+void comment_research_tech_cost_style(struct section_file *sfile)
+{
+  comment_entry_write(sfile, comments_storage.research_tech_cost_style,
+                      "research");
+}
diff --git a/tools/ruleutil/comments.h b/tools/ruleutil/comments.h
index 336a7f579e..bd2a537743 100644
--- a/tools/ruleutil/comments.h
+++ b/tools/ruleutil/comments.h
@@ -69,6 +69,7 @@ void comment_auto_attack(struct section_file *sfile);
 void comment_actions_ui_names(struct section_file *sfile);
 void comment_actions_dc_initial_odds(struct section_file *sfile);
 void comment_borders_radius_permanent(struct section_file *sfile);
+void comment_research_tech_cost_style(struct section_file *sfile);
 
 #ifdef __cplusplus
 }
diff --git a/tools/ruleutil/rulesave.c b/tools/ruleutil/rulesave.c
index f12165e53a..43bf33a3c4 100644
--- a/tools/ruleutil/rulesave.c
+++ b/tools/ruleutil/rulesave.c
@@ -1419,6 +1419,8 @@ static bool save_game_ruleset(const char *filename, const char *name)
   save_default_int(sfile, game.info.border_city_permanent_radius_sq,
                    RS_DEFAULT_BORDER_RADIUS_SQ_CITY_PERMANENT,
                    "borders.radius_sq_city_permanent", NULL);
+
+  comment_research_tech_cost_style(sfile);
   secfile_insert_str(sfile, tech_cost_style_name(game.info.tech_cost_style),
                      "research.tech_cost_style");
   save_default_int(sfile, game.info.base_tech_cost,
-- 
2.33.0