From 2e8e9ee7f5c0fa638e5a427f34b6823892c84f7c Mon Sep 17 00:00:00 2001
From: Perttu Ahola <celeron55@gmail.com>
Date: Tue, 24 Jan 2012 12:01:59 +0200
Subject: [PATCH] Add EnvRef:set_timeofday(0...1) and EnvRef:get_timeofday()

---
 data/mods/default/init.lua      |  6 ++++--
 data/mods/experimental/init.lua | 22 +++++++++++++++++++++
 src/scriptapi.cpp               | 34 +++++++++++++++++++++++++++++++++
 3 files changed, 60 insertions(+), 2 deletions(-)

diff --git a/data/mods/default/init.lua b/data/mods/default/init.lua
index 7c6cccd44..f0e6b6dc2 100644
--- a/data/mods/default/init.lua
+++ b/data/mods/default/init.lua
@@ -114,10 +114,10 @@
 -- minetest.chat_send_player(name, text)
 -- minetest.get_player_privs(name) -> set of privs
 -- minetest.get_inventory(location) -> InvRef
--- minetest.get_current_modname() -> string
--- minetest.get_modpath(modname) -> eg. "/home/user/.minetest/usermods/modname"
 -- ^ location = eg. {type="player", name="celeron55"}
 --                  {type="node", pos={x=, y=, z=}}
+-- minetest.get_current_modname() -> string
+-- minetest.get_modpath(modname) -> eg. "/home/user/.minetest/usermods/modname"
 --
 -- minetest.debug(line)
 -- ^ Goes to dstream
@@ -169,6 +169,8 @@
 -- - get_meta(pos) -- Get a NodeMetaRef at that position
 -- - get_player_by_name(name) -- Get an ObjectRef to a player
 -- - get_objects_inside_radius(pos, radius)
+-- - set_timeofday(val): val: 0...1; 0 = midnight, 0.5 = midday
+-- - get_timeofday()
 --
 -- NodeMetaRef (this stuff is subject to change in a future version)
 -- - get_type()
diff --git a/data/mods/experimental/init.lua b/data/mods/experimental/init.lua
index 368295ea7..9a8f8868d 100644
--- a/data/mods/experimental/init.lua
+++ b/data/mods/experimental/init.lua
@@ -4,6 +4,8 @@
 
 -- For testing random stuff
 
+experimental = {}
+
 function on_step(dtime)
 	-- print("experimental on_step")
 	--[[
@@ -20,6 +22,26 @@ function on_step(dtime)
 		end
 	end
 	--]]
+	--[[
+	if experimental.t1 == nil then
+		experimental.t1 = 0
+	end
+	experimental.t1 = experimental.t1 + dtime
+	if experimental.t1 >= 2 then
+		experimental.t1 = experimental.t1 - 2
+		minetest.log("time of day is "..minetest.env:get_timeofday())
+		if experimental.day then
+			minetest.log("forcing day->night")
+			experimental.day = false
+			minetest.env:set_timeofday(0.0)
+		else
+			minetest.log("forcing night->day")
+			experimental.day = true
+			minetest.env:set_timeofday(0.5)
+		end
+		minetest.log("time of day is "..minetest.env:get_timeofday())
+	end
+	--]]
 end
 minetest.register_globalstep(on_step)
 
diff --git a/src/scriptapi.cpp b/src/scriptapi.cpp
index 5d68793e2..a064cd688 100644
--- a/src/scriptapi.cpp
+++ b/src/scriptapi.cpp
@@ -2913,6 +2913,38 @@ private:
 		return 1;
 	}
 
+	// EnvRef:set_timeofday(val)
+	// val = 0...1
+	static int l_set_timeofday(lua_State *L)
+	{
+		EnvRef *o = checkobject(L, 1);
+		ServerEnvironment *env = o->m_env;
+		if(env == NULL) return 0;
+		// Do it
+		float timeofday_f = luaL_checknumber(L, 2);
+		assert(timeofday_f >= 0.0 && timeofday_f <= 1.0);
+		int timeofday_mh = (int)(timeofday_f * 24000.0);
+		// This should be set directly in the environment but currently
+		// such changes aren't immediately sent to the clients, so call
+		// the server instead.
+		//env->setTimeOfDay(timeofday_mh);
+		get_server(L)->setTimeOfDay(timeofday_mh);
+		return 0;
+	}
+
+	// EnvRef:get_timeofday() -> 0...1
+	static int l_get_timeofday(lua_State *L)
+	{
+		EnvRef *o = checkobject(L, 1);
+		ServerEnvironment *env = o->m_env;
+		if(env == NULL) return 0;
+		// Do it
+		int timeofday_mh = env->getTimeOfDay();
+		float timeofday_f = (float)timeofday_mh / 24000.0;
+		lua_pushnumber(L, timeofday_f);
+		return 1;
+	}
+
 	static int gc_object(lua_State *L) {
 		EnvRef *o = *(EnvRef **)(lua_touserdata(L, 1));
 		delete o;
@@ -2990,6 +3022,8 @@ const luaL_reg EnvRef::methods[] = {
 	method(EnvRef, get_meta),
 	method(EnvRef, get_player_by_name),
 	method(EnvRef, get_objects_inside_radius),
+	method(EnvRef, set_timeofday),
+	method(EnvRef, get_timeofday),
 	{0,0}
 };