Add the donate command to donate your match score to your teammate

mods/ctf/ctf_modebase/ranking_commands.lua

@@ -58,6 +58,77 @@ ctf_core.register_chatcommand_alias("rank", "r", {
 	end
 })
 
+local donate_timer = {}
+
+ctf_api.register_on_match_end(function()
+	donate_timer = {}
+end)
+
+minetest.register_chatcommand("donate", {
+	description = "Donate your match score to your teammate\nCan be used only once in 10 minutes",
+	params = "<playername> <score>",
+	func = function(name, param)
+		local current_mode = ctf_modebase:get_current_mode()
+		if not current_mode or not ctf_modebase.match_started then
+			return false, "The match hasn't started yet!"
+		end
+
+		local pname, score = string.match(param, "^(.*) (.*)$")
+
+		if not pname then
+			return false, "You should provide the player name!"
+		end
+
+		score = tonumber(score)
+		if not score then
+			return false, "You should provide score amount!"
+		end
+
+		if score < 1 then
+			return false, "You should donate at least 1 score!"
+		end
+
+		if pname == name then
+			return false, 'You cannot donate to yourself!'
+		end
+
+		local team = ctf_teams.get(pname)
+
+		if not team then
+			return false, string.format("Player %s is not online!", pname)
+		end
+
+		if ctf_teams.get(pname) ~= ctf_teams.get(name) then
+			return false, string.format("Player %s is not on your team!", pname)
+		end
+
+		local cur_score = math.min(
+			current_mode.recent_rankings.get(name).score or 0,
+			(current_mode.rankings:get(name) or {}).score or 0
+		)
+		if score > cur_score / 2 then
+			return false, "You can donate only half of your match score!"
+		end
+
+		if donate_timer[name] and donate_timer[name] + 600 > os.time() then
+			return false, "You can donate only once in 10 minutes!"
+		end
+
+		current_mode.recent_rankings.add(pname, {score=score}, true)
+		current_mode.recent_rankings.add(name, {score=-score}, true)
+
+		donate_timer[name] = os.time()
+
+		minetest.chat_send_all(minetest.colorize("#00EEFF",
+			string.format("%s donated %s score to %s for their hard work", name, score, pname)
+		))
+		minetest.log("action", string.format(
+			"Player '%s' donated %s score to player '%s'", name, score, pname
+		))
+		return true
+	end
+})
+
 local allow_reset = {}
 minetest.register_chatcommand("reset_rankings", {
 	description = minetest.colorize("red", "Resets rankings of you or another player to nothing"),
@@ -75,7 +146,7 @@ minetest.register_chatcommand("reset_rankings", {
 				minetest.log("action", string.format(
 					"[ctf_admin] %s reset rankings for player '%s' in mode %s", name, pname, mode_name
 				))
-				return true, "Rankings reset for player " .. pname
+				return true, string.format("Rankings reset for player '%s' in mode %s", pname, mode_name)
 			else
 				return false, "The ctf_admin priv is required to reset the rankings of other players!"
 			end
@@ -96,12 +167,14 @@ minetest.register_chatcommand("reset_rankings", {
 			mode_data.rankings:set(name, {}, true)
 			allow_reset[key] = nil
 
+			minetest.log("action", string.format(
+				"Player '%s' reset their rankings in mode %s", name, mode_name
+			))
 			return true, "Your rankings have been reset"
 		end
 	end
 })
 
-
 minetest.register_chatcommand("top50", {
 	description = "Show the top 50 players",
 	params = "[mode:technical modename]",
@@ -146,7 +219,7 @@ minetest.register_chatcommand("make_pro", {
 		end
 
 		if not pname then
-			return false, "You should provide the player name"
+			return false, "You should provide the player name!"
 		end
 
 		local old_ranks = mode_data.rankings:get(pname)

mods/ctf/ctf_modebase/recent_rankings.lua

@@ -32,6 +32,10 @@ return {
 
 		rankings:add(player, amounts)
 	end,
+	get = function(player)
+		player = PlayerName(player)
+		return rankings_players[player] or {}
+	end,
 	set_team = function(player, team)
 		player = PlayerName(player)
 		local tcolor = ctf_teams.team[team].color