Do autosaves

src/fileio/fileio.hpp

@@ -35,6 +35,7 @@ std::vector<std::pair<fs::path, std::time_t>> sorted_file_mtimes(fs::path dir, s
 
 bool load_party(fs::path file_to_load, cUniverse& univ);
 bool save_party(cUniverse& univ, bool save_as = false);
+bool save_party_force(cUniverse& univ, fs::path file);
 
 void init_directories(const char* exec_path);
 

src/fileio/fileio_party.cpp

@@ -444,9 +444,12 @@ bool load_party_v2(fs::path file_to_load, cUniverse& real_univ){
 	return true;
 }
 
-static bool save_party_const(const cUniverse& univ, bool save_as) {
+static bool save_party_const(const cUniverse& univ, bool save_as, fs::path dest_file = "") {
 	// Make sure it has the proper file extension
-	fs::path dest_file = univ.file;
+	if(dest_file.empty()){
+		dest_file = univ.file;
+	}
+
 	if(dest_file.extension() != ".exg"){
 		dest_file += ".exg";
 	}
@@ -555,6 +558,10 @@ bool save_party(cUniverse& univ, bool save_as) {
 	return save_party_const(univ, save_as);
 }
 
+bool save_party_force(cUniverse& univ, fs::path file) {
+	return save_party_const(univ, false, file);
+}
+
 static bool compare_mtime(std::pair<fs::path, std::time_t> a, std::pair<fs::path, std::time_t> b) {
 	return std::difftime(a.second, b.second) > 0;
 }

src/game/boe.actions.cpp

@@ -483,6 +483,7 @@ void handle_rest(bool& need_redraw, bool& need_reprint) {
 	if(i == 50) {
 		do_rest(1200, get_ran(5,1,10), 50);
 		add_string_to_buf("  Rest successful.");
+		try_auto_save("RestComplete");
 		put_pc_screen();
 		pause(25);
 	}
@@ -1138,6 +1139,9 @@ static void handle_town_wait(bool& need_redraw, bool& need_reprint) {
 		redraw_screen(REFRESH_NONE);
 	}
 	put_pc_screen();
+	if(!party_sees_a_monst()){
+		try_auto_save("TownWaitComplete");
+	}
 }
 
 void handle_wait(bool& did_something, bool& need_redraw, bool& need_reprint) {
@@ -3196,6 +3200,7 @@ void increase_age() {
 		else {
 			play_sound(6);
 			add_string_to_buf("You eat.");
+			try_auto_save("Eat");
 		}
 	}
 	

src/game/boe.combat.cpp

@@ -6,6 +6,7 @@
 #include "universe/universe.hpp"
 #include "boe.monster.hpp"
 #include "boe.graphics.hpp"
+#include "boe.fileio.hpp"
 #include "boe.locutils.hpp"
 #include "boe.newgraph.hpp"
 #include "boe.infodlg.hpp"
@@ -4681,8 +4682,10 @@ bool hit_end_c_button() {
 		}
 	}
 	
-	if(end_ok)
+	if(end_ok){
 		end_combat();
+		if(which_combat_type == 0) try_auto_save("EndOutdoorCombat");
+	}
 	return end_ok;
 }
 

src/game/boe.fileio.cpp

@@ -480,3 +480,37 @@ bool load_scenario_header(fs::path file,scen_header_type& scen_head){
 	
 	return true;
 }
+
+const int MAX_AUTOSAVE_DEFAULT = 5;
+void try_auto_save(std::string reason) {
+	if(!get_bool_pref("Autosave", true)) return;
+	if(!get_bool_pref("Autosave_" + reason, true)) return;
+	if(univ.file.empty()){
+		ASB("Autosave: Make a manual save first.");
+		print_buf();
+		return;
+	}
+
+	fs::path auto_folder = univ.file;
+	auto_folder.replace_extension(".auto");
+	fs::create_directories(auto_folder);
+	std::vector<std::pair<fs::path, std::time_t>> auto_mtimes = sorted_file_mtimes(auto_folder);
+
+	int max_autosaves = get_int_pref("Autosave_Max", MAX_AUTOSAVE_DEFAULT);
+	fs::path target_path;
+	if(auto_mtimes.size() < max_autosaves){
+		target_path = auto_folder / std::to_string(auto_mtimes.size() + 1);
+		target_path += ".exg";
+	}
+	// Save file buffer is full, so overwrite the oldest autosave
+	else{
+		target_path = auto_mtimes.back().first;
+	}
+
+	if(save_party_force(univ, target_path)){
+		ASB("Autosave: Game saved");
+	}else{
+		ASB("Autosave: Save not completed");
+	}
+	print_buf();
+}

src/game/boe.fileio.hpp

@@ -30,4 +30,8 @@ fs::path locate_scenario(std::string scen_name);
 
 void alter_rect(rectangle *r);
 
+// The player can configure autosaves on/off globally, or individually
+// for a variety of different trigger reasons
+void try_auto_save(std::string reason);
+
 #endif

src/game/boe.town.cpp

@@ -507,6 +507,8 @@ void start_town_mode(short which_town, short entry_dir) {
 	// TODO: One problem with this - it paints the terrain after the town entry dialog is dismissed
 	// ... except it actually doesn't, because the town enter special is only queued, not run immediately.
 	draw_terrain(1);
+
+	try_auto_save("EnterTown");
 }
 
 
@@ -629,6 +631,10 @@ location end_town_mode(bool switching_level,location destination, bool debug_lea
 	
 	univ.party.town_num = 200; // should be harmless...
 	
+	if(!switching_level){
+		try_auto_save("ExitTown");
+	}
+
 	return to_return;
 }