first implementation of actual d_dynamic execution

dynamic_dialog.lua

@@ -0,0 +1,27 @@
+
+-- the dialog will be modified for this player only:
+-- (pass on all the known parameters in case they're relevant):
+-- 	called from yl_speak_up.get_fs_talkdialog(..):
+yl_speak_up.generate_next_dynamic_dialog = function(player, n_id, d_id, alternate_text, recursion_depth)
+	if(not(player)) then
+		return
+	end
+	local pname = player:get_player_name()
+	if(not(yl_speak_up.speak_to[pname])) then
+		return
+	end
+	local dialog = yl_speak_up.speak_to[pname].dialog
+	if(not(dialog)) then
+		return
+	end
+	local dyn_dialog = dialog.n_dialogs["d_dynamic"]
+	if(not(dyn_dialog)) then
+		return
+	end
+	-- which dialog did the player come from?
+	local prev_d_id = yl_speak_up.speak_to[pname].d_id
+	-- the dialog d_dynamic is modified directly; we do not return anything
+	dyn_dialog.d_text = "Hello "..tostring(pname)..". You used d_id: "..tostring(d_id)..
+				" while talking to NPC "..tostring(n_id)..".\n"..
+				"Previous dialog: "..tostring(prev_d_id).."."
+end

fs/fs_talkdialog.lua

@@ -456,6 +456,15 @@ yl_speak_up.get_fs_talkdialog = function(player, n_id, d_id, alternate_text, rec
 
 	if c_d_id == nil then return yl_speak_up.get_error_message() end
 
+	-- show the player a dynamic dialog text:
+	if(c_d_id == "d_dynamic") then
+		-- the dialog will be modified for this player only:
+		-- (pass on all the known parameters in case they're relevant):
+		yl_speak_up.generate_next_dynamic_dialog(player, n_id, d_id, alternate_text, recursion_depth)
+		-- just to make sure that the right dialog is loaded:
+		active_dialog = dialog.n_dialogs[c_d_id]
+	end
+
 	yl_speak_up.speak_to[pname].d_id = c_d_id
 
 	-- Now we have a dialog to display to the user

init.lua

@@ -155,6 +155,8 @@ yl_speak_up.reload = function(modpath, log_entry)
 	dofile(modpath .. "fs/fs_show_log.lua")
 	-- general decoration part for main formspec, trade window etc.
 	dofile(modpath .. "api/api_decorated.lua")
+	-- change dialog d_dynamic via an extra function on the fly when the player talks to the NPC:
+	dofile(modpath .. "dynamic_dialog.lua")
 	-- the formspec and input handling for the main dialog
 	dofile(modpath .. "api/api_talk.lua")
 	dofile(modpath .. "fs/fs_talkdialog.lua")