Fix heart + bubble bar size on different texture packs

Add DPI support for statbar
Move heart+bubble bar to Lua HUD
Add statbar size (based upon an idea by blue42u)
Add support for customizing breath and statbar

builtin/builtin.lua

@@ -29,3 +29,4 @@ dofile(modpath.."/features.lua")
 dofile(modpath.."/voxelarea.lua")
 dofile(modpath.."/vector.lua")
 dofile(modpath.."/forceloading.lua")
+dofile(modpath.."/statbars.lua")

builtin/misc_register.lua

@@ -389,6 +389,7 @@ end
 
 minetest.registered_on_chat_messages, minetest.register_on_chat_message = make_registration()
 minetest.registered_globalsteps, minetest.register_globalstep = make_registration()
+minetest.registered_playerevents, minetest.register_playerevent = make_registration()
 minetest.registered_on_mapgen_inits, minetest.register_on_mapgen_init = make_registration()
 minetest.registered_on_shutdown, minetest.register_on_shutdown = make_registration()
 minetest.registered_on_punchnodes, minetest.register_on_punchnode = make_registration()

builtin/statbars.lua

@@ -0,0 +1,160 @@
+
+local health_bar_definition =
+{
+	hud_elem_type = "statbar",
+	position = { x=0.5, y=1 },
+	text = "heart.png",
+	number = 20,
+	direction = 0,
+	size = { x=24, y=24 },
+	offset = { x=(-10*24)-25, y=-(48+24+10)},
+}
+
+local breath_bar_definition =
+{
+	hud_elem_type = "statbar",
+	position = { x=0.5, y=1 },
+	text = "bubble.png",
+	number = 20,
+	direction = 0,
+	size = { x=24, y=24 },
+	offset = {x=25,y=-(48+24+10)},
+}
+
+local hud_ids = {}
+
+local function initialize_builtin_statbars(player)
+
+	if not player:is_player() then
+		return
+	end
+
+	local name = player:get_player_name()
+
+	if name == "" then
+		return
+	end
+
+	if (hud_ids[name] == nil) then
+		hud_ids[name] = {}
+	end
+
+	if player:hud_get_flags().healthbar then
+		if hud_ids[name].id_healthbar == nil then
+			health_bar_definition.number = player:get_hp()
+			hud_ids[name].id_healthbar  = player:hud_add(health_bar_definition)
+		end
+	else
+		if hud_ids[name].id_healthbar ~= nil then
+			player:hud_remove(hud_ids[name].id_healthbar)
+			hud_ids[name].id_healthbar = nil
+		end
+	end
+
+	if (player:get_breath() < 11) then
+		if player:hud_get_flags().breathbar then
+			if hud_ids[name].id_breathbar == nil then
+				hud_ids[name].id_breathbar = player:hud_add(breath_bar_definition)
+			end
+		else
+			if hud_ids[name].id_breathbar ~= nil then
+				player:hud_remove(hud_ids[name].id_breathbar)
+				hud_ids[name].id_breathbar = nil
+			end
+		end
+	elseif hud_ids[name].id_breathbar ~= nil then
+		player:hud_remove(hud_ids[name].id_breathbar)
+		hud_ids[name].id_breathbar = nil
+	end
+end
+
+local function cleanup_builtin_statbars(player)
+
+	if not player:is_player() then
+		return
+	end
+
+	local name = player:get_player_name()
+
+	if name == "" then
+		return
+	end
+
+	hud_ids[name] = nil
+end
+
+local function player_event_handler(player,eventname)
+	assert(player:is_player())
+
+	local name = player:get_player_name()
+
+	if name == "" then
+		return
+	end
+
+	if eventname == "health_changed" then
+		initialize_builtin_statbars(player)
+
+		if hud_ids[name].id_healthbar ~= nil then
+			player:hud_change(hud_ids[name].id_healthbar,"number",player:get_hp())
+			return true
+		end
+	end
+
+	if eventname == "breath_changed" then
+		initialize_builtin_statbars(player)
+
+		if hud_ids[name].id_breathbar ~= nil then
+			player:hud_change(hud_ids[name].id_breathbar,"number",player:get_breath()*2)
+			return true
+		end
+	end
+
+	if eventname == "hud_changed" then
+		initialize_builtin_statbars(player)
+		return true
+	end
+
+	return false
+end
+
+function minetest.hud_replace_builtin(name, definition)
+
+	if definition == nil or
+		type(definition) ~= "table" or
+		definition.hud_elem_type ~= "statbar" then
+		return false
+	end
+
+	if name == "health" then
+		health_bar_definition = definition
+
+		for name,ids in pairs(hud_ids) do
+			local player = minetest.get_player_by_name(name)
+			if  player and hud_ids[name].id_healthbar then
+				player:hud_remove(hud_ids[name].id_healthbar)
+				initialize_builtin_statbars(player)
+			end
+		end
+		return true
+	end
+
+	if name == "breath" then
+		breath_bar_definition = definition
+
+		for name,ids in pairs(hud_ids) do
+			local player = minetest.get_player_by_name(name)
+			if  player and hud_ids[name].id_breathbar then
+				player:hud_remove(hud_ids[name].id_breathbar)
+				initialize_builtin_statbars(player)
+			end
+		end
+		return true
+	end
+
+	return false
+end
+
+minetest.register_on_joinplayer(initialize_builtin_statbars)
+minetest.register_on_leaveplayer(cleanup_builtin_statbars)
+minetest.register_playerevent(player_event_handler)

doc/lua_api.txt

@@ -475,6 +475,7 @@ values can be used.
 The offset field specifies a pixel offset from the position. Contrary to position,
 the offset is not scaled to screen size. This allows for some precisely-positioned
 items in the HUD.
+Note offset WILL adapt to screen dpi as well as user defined scaling factor!
 Below are the specific uses for fields in each type; fields not listed for that type are ignored.
 
 Note: Future revisions to the HUD API may be incompatible; the HUD API is still in the experimental stages.
@@ -504,6 +505,7 @@ Note: Future revisions to the HUD API may be incompatible; the HUD API is still
               If odd, will end with a vertically center-split texture.
     - direction
     - offset: offset in pixels from position.
+    - size: If used will force full-image size to this value (override texture pack image size)
 - inventory
     - text: The name of the inventory list to be displayed.
     - number: Number of items in the inventory to be displayed.
@@ -515,7 +517,7 @@ Note: Future revisions to the HUD API may be incompatible; the HUD API is still
     - text: Distance suffix. Can be blank.
     - number: An integer containing the RGB value of the color used to draw the text.
     - world_pos: World position of the waypoint.
-    
+
 Representations of simple things
 --------------------------------
 Position/vector:
@@ -1212,7 +1214,7 @@ minetest.get_player_information(playername)
 	max_jitter = 0.5,          -- maximum packet time jitter
 	avg_jitter = 0.03,         -- average packet time jitter
 	connection_uptime = 200,   -- seconds since client connected
-	
+
 	-- following information is available on debug build only!!!
 	-- DO NOT USE IN MODS
 	--ser_vers = 26,             -- serialization version used by client
@@ -1375,7 +1377,7 @@ minetest.dig_node(pos)
 ^ Dig node with the same effects that a player would cause
 minetest.punch_node(pos)
 ^ Punch node with the same effects that a player would cause
-  
+
 minetest.get_meta(pos) -- Get a NodeMetaRef at that position
 minetest.get_node_timer(pos) -- Get NodeTimerRef
 
@@ -1750,7 +1752,7 @@ methods:
 - to_table() -> nil or {fields = {...}, inventory = {list1 = {}, ...}}
 - from_table(nil or {})
   ^ See "Node Metadata"
-  
+
 NodeTimerRef: Node Timers - a high resolution persistent per-node timer
 - Can be gotten via minetest.get_node_timer(pos)
 methods:
@@ -1853,12 +1855,18 @@ Player-only: (no-op for other objects)
   ^ flags: (is visible) hotbar, healthbar, crosshair, wielditem
   ^ pass a table containing a true/false value of each flag to be set or unset
   ^ if a flag is nil, the flag is not modified
+- hud_get_flags(): returns a table containing status of hud flags
+  ^ returns { hotbar=true, healthbar=true, crosshair=true, wielditem=true, breathbar=true }
 - hud_set_hotbar_itemcount(count): sets number of items in builtin hotbar
   ^ count: number of items, must be between 1 and 23
 - hud_set_hotbar_image(texturename)
   ^ sets background image for hotbar
 - hud_set_hotbar_selected_image(texturename)
   ^ sets image for selected item of hotbar
+- hud_replace_builtin(name, hud definition)
+  ^ replace definition of a builtin hud element
+  ^ name: "breath" or "health"
+  ^ hud definition: definition to replace builtin definition
 - set_sky(bgcolor, type, {texture names})
   ^ bgcolor: {r=0...255, g=0...255, b=0...255} or nil, defaults to white
   ^ Available types:
@@ -2172,7 +2180,7 @@ Object Properties
 Entity definition (register_entity)
 {
     (Deprecated: Everything in object properties is read directly from here)
-    
+
     initial_properties = <initial object properties>,
 
     on_activate = function(self, staticdata, dtime_s),
@@ -2182,7 +2190,7 @@ Entity definition (register_entity)
     get_staticdata = function(self),
     ^ Called sometimes; the string returned is passed to on_activate when
       the entity is re-activated from static state
-    
+
     # Also you can define arbitrary member variables here
     myvariable = whatever,
 }
@@ -2345,7 +2353,7 @@ Node definition (register_node)
     can_dig = function(pos,player)
     ^ returns true if node can be dug, or false if not
     ^ default: nil
-    
+
     on_punch = func(pos, node, puncher, pointed_thing),
     ^ default: minetest.node_punch
     ^ By default: Calls minetest.register_on_punchnode callbacks
@@ -2354,11 +2362,11 @@ Node definition (register_node)
     ^ if defined, itemstack will hold clicker's wielded item
     ^ Shall return the leftover itemstack
     ^ Note: pointed_thing can be nil, if a mod calls this function
-     
+
     on_dig = func(pos, node, digger),
     ^ default: minetest.node_dig
     ^ By default: checks privileges, wears out tool and removes node
-    
+
     on_timer = function(pos,elapsed),
     ^ default: nil
     ^ called by NodeTimers, see minetest.get_node_timer and NodeTimerRef
@@ -2374,12 +2382,12 @@ Node definition (register_node)
             to_list, to_index, count, player),
     ^ Called when a player wants to move items inside the inventory
     ^ Return value: number of items allowed to move
-    
+
     allow_metadata_inventory_put = func(pos, listname, index, stack, player),
     ^ Called when a player wants to put something into the inventory
     ^ Return value: number of items allowed to put
     ^ Return value: -1: Allow and don't modify item count in inventory
-  
+
     allow_metadata_inventory_take = func(pos, listname, index, stack, player),
     ^ Called when a player wants to take something out of the inventory
     ^ Return value: number of items allowed to take
@@ -2391,7 +2399,7 @@ Node definition (register_node)
     on_metadata_inventory_take = func(pos, listname, index, stack, player),
     ^ Called after the actual action has happened, according to what was allowed.
     ^ No return value
-    
+
     on_blast = func(pos, intensity),
     ^ intensity: 1.0 = mid range of regular TNT
     ^ If defined, called when an explosion touches the node, instead of
@@ -2543,17 +2551,17 @@ Detached inventory callbacks
     allow_move = func(inv, from_list, from_index, to_list, to_index, count, player),
     ^ Called when a player wants to move items inside the inventory
     ^ Return value: number of items allowed to move
-    
+
     allow_put = func(inv, listname, index, stack, player),
     ^ Called when a player wants to put something into the inventory
     ^ Return value: number of items allowed to put
     ^ Return value: -1: Allow and don't modify item count in inventory
-   
+
     allow_take = func(inv, listname, index, stack, player),
     ^ Called when a player wants to take something out of the inventory
     ^ Return value: number of items allowed to take
     ^ Return value: -1: Allow and don't modify item count in inventory
-    
+
     on_move = func(inv, from_list, from_index, to_list, to_index, count, player),
     on_put = func(inv, listname, index, stack, player),
     on_take = func(inv, listname, index, stack, player),
@@ -2579,6 +2587,8 @@ HUD Definition (hud_add, hud_get)
     ^ See "HUD Element Types"
     offset = {x=0, y=0},
     ^ See "HUD Element Types"
+    size = { x=100, y=100 },
+    ^ Size of element in pixels
 }
 
 Particle definition (add_particle)

src/client.cpp

@@ -1787,9 +1787,13 @@ void Client::ProcessData(u8 *data, u32 datasize, u16 sender_peer_id)
 		v2f align        = readV2F1000(is);
 		v2f offset       = readV2F1000(is);
 		v3f world_pos;
+		v2s32 size;
 		try{
 			world_pos    = readV3F1000(is);
 		}catch(SerializationError &e) {};
+		try{
+			size = readV2S32(is);
+		} catch(SerializationError &e) {};
 
 		ClientEvent event;
 		event.type             = CE_HUDADD;
@@ -1805,6 +1809,7 @@ void Client::ProcessData(u8 *data, u32 datasize, u16 sender_peer_id)
 		event.hudadd.align     = new v2f(align);
 		event.hudadd.offset    = new v2f(offset);
 		event.hudadd.world_pos = new v3f(world_pos);
+		event.hudadd.size      = new v2s32(size);
 		m_client_event_queue.push_back(event);
 	}
 	else if(command == TOCLIENT_HUDRM)
@@ -1825,6 +1830,7 @@ void Client::ProcessData(u8 *data, u32 datasize, u16 sender_peer_id)
 		v2f v2fdata;
 		v3f v3fdata;
 		u32 intdata = 0;
+		v2s32 v2s32data;
 		
 		std::string datastring((char *)&data[2], datasize - 2);
 		std::istringstream is(datastring, std::ios_base::binary);
@@ -1839,6 +1845,8 @@ void Client::ProcessData(u8 *data, u32 datasize, u16 sender_peer_id)
 			sdata = deSerializeString(is);
 		else if (stat == HUD_STAT_WORLD_POS)
 			v3fdata = readV3F1000(is);
+		else if (stat == HUD_STAT_SIZE )
+			v2s32data = readV2S32(is);
 		else
 			intdata = readU32(is);
 		
@@ -1850,6 +1858,7 @@ void Client::ProcessData(u8 *data, u32 datasize, u16 sender_peer_id)
 		event.hudchange.v3fdata = new v3f(v3fdata);
 		event.hudchange.sdata   = new std::string(sdata);
 		event.hudchange.data    = intdata;
+		event.hudchange.v2s32data = new v2s32(v2s32data);
 		m_client_event_queue.push_back(event);
 	}
 	else if(command == TOCLIENT_HUD_SET_FLAGS)

src/client.h

@@ -215,6 +215,7 @@ struct ClientEvent
 			v2f *align;
 			v2f *offset;
 			v3f *world_pos;
+			v2s32 * size;
 		} hudadd;
 		struct{
 			u32 id;
@@ -226,6 +227,7 @@ struct ClientEvent
 			std::string *sdata;
 			u32 data;
 			v3f *v3fdata;
+			v2s32 * v2s32data;
 		} hudchange;
 		struct{
 			video::SColor *bgcolor;

src/clientserver.h

@@ -150,7 +150,7 @@ enum ToClientCommand
 		u8 keep_metadata // Added in protocol version 22
 	*/
 	TOCLIENT_REMOVENODE = 0x22,
-	
+
 	TOCLIENT_PLAYERPOS = 0x23, // Obsolete
 	/*
 		[0] u16 command
@@ -171,7 +171,7 @@ enum ToClientCommand
 		[N] u16 peer_id
 		[N] char[20] name
 	*/
-	
+
 	TOCLIENT_OPT_BLOCK_NOT_FOUND = 0x25, // Obsolete
 
 	TOCLIENT_SECTORMETA = 0x26, // Obsolete
@@ -186,7 +186,7 @@ enum ToClientCommand
 		[0] u16 command
 		[2] serialized inventory
 	*/
-	
+
 	TOCLIENT_OBJECTDATA = 0x28, // Obsolete
 	/*
 		Sent as unreliable.
@@ -237,7 +237,7 @@ enum ToClientCommand
 			string initialization data
 		}
 	*/
-	
+
 	TOCLIENT_ACTIVE_OBJECT_MESSAGES = 0x32,
 	/*
 		u16 command
@@ -303,21 +303,21 @@ enum ToClientCommand
 		u16 length of remote media server url (if applicable)
 		string url
 	*/
-	
+
 	TOCLIENT_TOOLDEF = 0x39,
 	/*
 		u16 command
 		u32 length of the next item
 		serialized ToolDefManager
 	*/
-	
+
 	TOCLIENT_NODEDEF = 0x3a,
 	/*
 		u16 command
 		u32 length of the next item
 		serialized NodeDefManager
 	*/
-	
+
 	TOCLIENT_CRAFTITEMDEF = 0x3b,
 	/*
 		u16 command
@@ -344,7 +344,7 @@ enum ToClientCommand
 		u32 length of next item
 		serialized ItemDefManager
 	*/
-	
+
 	TOCLIENT_PLAY_SOUND = 0x3f,
 	/*
 		u16 command
@@ -472,6 +472,8 @@ enum ToClientCommand
 		u32 dir
 		v2f1000 align
 		v2f1000 offset
+		v3f1000 world_pos
+		v2s32 size
 	*/
 
 	TOCLIENT_HUDRM = 0x4a,
@@ -530,7 +532,7 @@ enum ToClientCommand
 		u8 do_override (boolean)
 		u16 day-night ratio 0...65535
 	*/
-	
+
 	TOCLIENT_LOCAL_PLAYER_ANIMATIONS = 0x51,
 	/*
 		u16 command
@@ -634,7 +636,7 @@ enum ToServerCommand
 		2: stop digging (all parameters ignored)
 		3: digging completed
 	*/
-	
+
 	TOSERVER_RELEASE = 0x29, // Obsolete
 
 	// (oops, there is some gap here)
@@ -676,7 +678,7 @@ enum ToServerCommand
 		[3] u16 id
 		[5] u16 item
 	*/
-	
+
 	TOSERVER_DAMAGE = 0x35,
 	/*
 		u16 command
@@ -699,7 +701,7 @@ enum ToServerCommand
 		[0] u16 TOSERVER_PLAYERITEM
 		[2] u16 item
 	*/
-	
+
 	TOSERVER_RESPAWN=0x38,
 	/*
 		u16 TOSERVER_RESPAWN
@@ -721,7 +723,7 @@ enum ToServerCommand
 
 		(Obsoletes TOSERVER_GROUND_ACTION and TOSERVER_CLICK_ACTIVEOBJECT.)
 	*/
-	
+
 	TOSERVER_REMOVED_SOUNDS = 0x3a,
 	/*
 		u16 command

src/game.cpp

@@ -2492,6 +2492,7 @@ void the_game(bool &kill, bool random_input, InputHandler *input,
 						delete event.hudadd.align;
 						delete event.hudadd.offset;
 						delete event.hudadd.world_pos;
+						delete event.hudadd.size;
 						continue;
 					}
 					
@@ -2507,6 +2508,7 @@ void the_game(bool &kill, bool random_input, InputHandler *input,
 					e->align  = *event.hudadd.align;
 					e->offset = *event.hudadd.offset;
 					e->world_pos = *event.hudadd.world_pos;
+					e->size = *event.hudadd.size;
 					
 					if (id == nhudelem)
 						player->hud.push_back(e);
@@ -2520,6 +2522,7 @@ void the_game(bool &kill, bool random_input, InputHandler *input,
 					delete event.hudadd.align;
 					delete event.hudadd.offset;
 					delete event.hudadd.world_pos;
+					delete event.hudadd.size;
 				}
 				else if (event.type == CE_HUDRM)
 				{
@@ -2536,6 +2539,7 @@ void the_game(bool &kill, bool random_input, InputHandler *input,
 						delete event.hudchange.v3fdata;
 						delete event.hudchange.v2fdata;
 						delete event.hudchange.sdata;
+						delete event.hudchange.v2s32data;
 						continue;
 					}
 						
@@ -2571,11 +2575,15 @@ void the_game(bool &kill, bool random_input, InputHandler *input,
 						case HUD_STAT_WORLD_POS:
 							e->world_pos = *event.hudchange.v3fdata;
 							break;
+						case HUD_STAT_SIZE:
+							e->size = *event.hudchange.v2s32data;
+							break;
 					}
 					
 					delete event.hudchange.v3fdata;
 					delete event.hudchange.v2fdata;
 					delete event.hudchange.sdata;
+					delete event.hudchange.v2s32data;
 				}
 				else if (event.type == CE_SET_SKY)
 				{
@@ -3563,8 +3571,7 @@ void the_game(bool &kill, bool random_input, InputHandler *input,
 		*/
 		if (show_hud)
 		{
-			hud.drawHotbar(client.getHP(), client.getPlayerItem(),
-					client.getBreath());
+			hud.drawHotbar(client.getPlayerItem());
 		}
 
 		/*

src/hud.cpp

@@ -228,7 +228,8 @@ void Hud::drawLuaElements(v3s16 camera_offset) {
 		if (!e)
 			continue;
 		
-		v2s32 pos(e->pos.X * m_screensize.X, e->pos.Y * m_screensize.Y);
+		v2s32 pos(floor(e->pos.X * (float) m_screensize.X + 0.5),
+				floor(e->pos.Y * (float) m_screensize.Y + 0.5));
 		switch (e->type) {
 			case HUD_ELEM_IMAGE: {
 				video::ITexture *texture = tsrc->getTexture(e->text);
@@ -266,7 +267,7 @@ void Hud::drawLuaElements(v3s16 camera_offset) {
 				break; }
 			case HUD_ELEM_STATBAR: {
 				v2s32 offs(e->offset.X, e->offset.Y);
-				drawStatbar(pos, HUD_CORNER_UPPER, e->dir, e->text, e->number, offs);
+				drawStatbar(pos, HUD_CORNER_UPPER, e->dir, e->text, e->number, offs, e->size);
 				break; }
 			case HUD_ELEM_INVENTORY: {
 				InventoryList *inv = inventory->getList(e->text);
@@ -308,7 +309,9 @@ void Hud::drawLuaElements(v3s16 camera_offset) {
 }
 
 
-void Hud::drawStatbar(v2s32 pos, u16 corner, u16 drawdir, std::string texture, s32 count, v2s32 offset) {
+void Hud::drawStatbar(v2s32 pos, u16 corner, u16 drawdir, std::string texture,
+		s32 count, v2s32 offset, v2s32 size)
+{
 	const video::SColor color(255, 255, 255, 255);
 	const video::SColor colors[] = {color, color, color, color};
 	
@@ -317,10 +320,25 @@ void Hud::drawStatbar(v2s32 pos, u16 corner, u16 drawdir, std::string texture, s
 		return;
 		
 	core::dimension2di srcd(stat_texture->getOriginalSize());
+	core::dimension2di dstd;
+	if (size == v2s32()) {
+		dstd = srcd;
+	} else {
+		dstd.Height = size.Y * g_settings->getFloat("gui_scaling") *
+				porting::getDisplayDensity();
+		dstd.Width  = size.X * g_settings->getFloat("gui_scaling") *
+				porting::getDisplayDensity();
+
+		offset.X *= g_settings->getFloat("gui_scaling") *
+				porting::getDisplayDensity();
+
+		offset.Y *= g_settings->getFloat("gui_scaling") *
+				porting::getDisplayDensity();
+	}
 
 	v2s32 p = pos;
 	if (corner & HUD_CORNER_LOWER)
-		p -= srcd.Height;
+		p -= dstd.Height;
 
 	p += offset;
 
@@ -338,13 +356,13 @@ void Hud::drawStatbar(v2s32 pos, u16 corner, u16 drawdir, std::string texture, s
 		default:
 			steppos = v2s32(1, 0);
 	}
-	steppos.X *= srcd.Width;
-	steppos.Y *= srcd.Height;
+	steppos.X *= dstd.Width;
+	steppos.Y *= dstd.Height;
 	
 	for (s32 i = 0; i < count / 2; i++)
 	{
 		core::rect<s32> srcrect(0, 0, srcd.Width, srcd.Height);
-		core::rect<s32> dstrect(srcrect);
+		core::rect<s32> dstrect(0,0, dstd.Width, dstd.Height);
 
 		dstrect += p;
 		driver->draw2DImage(stat_texture, dstrect, srcrect, NULL, colors, true);
@@ -354,7 +372,7 @@ void Hud::drawStatbar(v2s32 pos, u16 corner, u16 drawdir, std::string texture, s
 	if (count % 2 == 1)
 	{
 		core::rect<s32> srcrect(0, 0, srcd.Width / 2, srcd.Height);
-		core::rect<s32> dstrect(srcrect);
+		core::rect<s32> dstrect(0,0, dstd.Width / 2, dstd.Height);
 
 		dstrect += p;
 		driver->draw2DImage(stat_texture, dstrect, srcrect, NULL, colors, true);
@@ -362,7 +380,7 @@ void Hud::drawStatbar(v2s32 pos, u16 corner, u16 drawdir, std::string texture, s
 }
 
 
-void Hud::drawHotbar(s32 halfheartcount, u16 playeritem, s32 breath) {
+void Hud::drawHotbar(u16 playeritem) {
 
 	v2s32 centerlowerpos(m_displaycenter.X, m_screensize.Y);
 
@@ -393,13 +411,6 @@ void Hud::drawHotbar(s32 halfheartcount, u16 playeritem, s32 breath) {
 			drawItems(secondpos, hotbar_itemcount, hotbar_itemcount/2, mainlist, playeritem + 1, 0);
 		}
 	}
-
-	if (player->hud_flags & HUD_FLAG_HEALTHBAR_VISIBLE)
-		drawStatbar(pos - v2s32(0, 4), HUD_CORNER_LOWER, HUD_DIR_LEFT_RIGHT,
-				"heart.png", halfheartcount, v2s32(0, 0));
-	if (player->hud_flags & HUD_FLAG_BREATHBAR_VISIBLE && breath <= 10)
-		drawStatbar(pos - v2s32(-180, 4), HUD_CORNER_LOWER, HUD_DIR_LEFT_RIGHT,
-				"bubble.png", breath*2, v2s32(0, 0));
 }
 
 

src/hud.h

@@ -66,7 +66,8 @@ enum HudElementStat {
 	HUD_STAT_DIR,
 	HUD_STAT_ALIGN,
 	HUD_STAT_OFFSET,
-	HUD_STAT_WORLD_POS
+	HUD_STAT_WORLD_POS,
+	HUD_STAT_SIZE
 };
 
 struct HudElement {
@@ -81,6 +82,7 @@ struct HudElement {
 	v2f align;
 	v2f offset;
 	v3f world_pos;
+	v2s32 size;
 };
 
 #ifndef SERVER
@@ -122,14 +124,14 @@ public:
 		u32 text_height, IGameDef *gamedef,
 		LocalPlayer *player, Inventory *inventory);
 	
-	void drawHotbar(s32 halfheartcount, u16 playeritem, s32 breath);
+	void drawHotbar(u16 playeritem);
 	void resizeHotbar();
 	void drawCrosshair();
 	void drawSelectionBoxes(std::vector<aabb3f> &hilightboxes);
 	void drawLuaElements(v3s16 camera_offset);
 private:
-	void drawStatbar(v2s32 pos, u16 corner, u16 drawdir,
-					 std::string texture, s32 count, v2s32 offset);
+	void drawStatbar(v2s32 pos, u16 corner, u16 drawdir, std::string texture,
+			s32 count, v2s32 offset, v2s32 size=v2s32());
 	
 	void drawItems(v2s32 upperleftpos, s32 itemcount, s32 offset,
 		InventoryList *mainlist, u16 selectitem, u16 direction);

src/script/cpp_api/s_env.cpp

@@ -58,6 +58,24 @@ void ScriptApiEnv::environment_Step(float dtime)
 	}
 }
 
+void ScriptApiEnv::player_event(ServerActiveObject* player, std::string type)
+{
+	SCRIPTAPI_PRECHECKHEADER
+
+	// Get minetest.registered_playerevents
+	lua_getglobal(L, "minetest");
+	lua_getfield(L, -1, "registered_playerevents");
+
+	// Call callbacks
+	objectrefGetOrCreate(player);   // player
+	lua_pushstring(L,type.c_str()); // event type
+	try {
+		script_run_callbacks(L, 2, RUN_CALLBACKS_MODE_FIRST);
+	} catch (LuaError &e) {
+		getServer()->setAsyncFatalError(e.what());
+	}
+}
+
 void ScriptApiEnv::environment_OnMapgenInit(MapgenParams *mgparams)
 {
 	SCRIPTAPI_PRECHECKHEADER

src/script/cpp_api/s_env.h

@@ -37,6 +37,9 @@ public:
 	// After initializing mapgens
 	void environment_OnMapgenInit(MapgenParams *mgparams);
 
+	//called on player event
+	void player_event(ServerActiveObject* player, std::string type);
+
 	void initializeEnvironment(ServerEnvironment *env);
 };
 

src/script/lua_api/l_object.cpp

@@ -906,6 +906,10 @@ int ObjectRef::l_hud_add(lua_State *L)
 	elem->scale = lua_istable(L, -1) ? read_v2f(L, -1) : v2f();
 	lua_pop(L, 1);
 
+	lua_getfield(L, 2, "size");
+	elem->size = lua_istable(L, -1) ? read_v2s32(L, -1) : v2s32();
+	lua_pop(L, 1);
+
 	elem->name   = getstringfield_default(L, 2, "name", "");
 	elem->text   = getstringfield_default(L, 2, "text", "");
 	elem->number = getintfield_default(L, 2, "number", 0);
@@ -924,6 +928,11 @@ int ObjectRef::l_hud_add(lua_State *L)
 	elem->world_pos = lua_istable(L, -1) ? read_v3f(L, -1) : v3f();
 	lua_pop(L, 1);
 
+	/* check for known deprecated element usage */
+	if ((elem->type  == HUD_ELEM_STATBAR) && (elem->size == v2s32())) {
+		log_deprecated(L,"Deprecated usage of statbar without size!");
+	}
+
 	u32 id = getServer(L)->hudAdd(player, elem);
 	if (id == (u32)-1) {
 		delete elem;
@@ -1019,6 +1028,10 @@ int ObjectRef::l_hud_change(lua_State *L)
 			e->world_pos = read_v3f(L, 4);
 			value = &e->world_pos;
 			break;
+		case HUD_STAT_SIZE:
+			e->size = read_v2s32(L, 4);
+			value = &e->size;
+			break;
 	}
 
 	getServer(L)->hudChange(player, id, stat, value);
@@ -1101,6 +1114,28 @@ int ObjectRef::l_hud_set_flags(lua_State *L)
 	return 1;
 }
 
+int ObjectRef::l_hud_get_flags(lua_State *L)
+{
+	ObjectRef *ref = checkobject(L, 1);
+	Player *player = getplayer(ref);
+	if (player == NULL)
+		return 0;
+
+	lua_newtable(L);
+	lua_pushboolean(L, player->hud_flags & HUD_FLAG_HOTBAR_VISIBLE);
+	lua_setfield(L, -2, "hotbar");
+	lua_pushboolean(L, player->hud_flags & HUD_FLAG_HEALTHBAR_VISIBLE);
+	lua_setfield(L, -2, "healthbar");
+	lua_pushboolean(L, player->hud_flags & HUD_FLAG_CROSSHAIR_VISIBLE);
+	lua_setfield(L, -2, "crosshair");
+	lua_pushboolean(L, player->hud_flags & HUD_FLAG_WIELDITEM_VISIBLE);
+	lua_setfield(L, -2, "wielditem");
+	lua_pushboolean(L, player->hud_flags & HUD_FLAG_BREATHBAR_VISIBLE);
+	lua_setfield(L, -2, "breathbar");
+
+	return 1;
+}
+
 // hud_set_hotbar_itemcount(self, hotbar_itemcount)
 int ObjectRef::l_hud_set_hotbar_itemcount(lua_State *L)
 {
@@ -1321,6 +1356,7 @@ const luaL_reg ObjectRef::methods[] = {
 	luamethod(ObjectRef, hud_change),
 	luamethod(ObjectRef, hud_get),
 	luamethod(ObjectRef, hud_set_flags),
+	luamethod(ObjectRef, hud_get_flags),
 	luamethod(ObjectRef, hud_set_hotbar_itemcount),
 	luamethod(ObjectRef, hud_set_hotbar_image),
 	luamethod(ObjectRef, hud_set_hotbar_selected_image),

src/script/lua_api/l_object.h

@@ -216,6 +216,9 @@ private:
 	// hud_set_flags(self, flags)
 	static int l_hud_set_flags(lua_State *L);
 
+	// hud_get_flags()
+	static int l_hud_get_flags(lua_State *L);
+
 	// hud_set_hotbar_itemcount(self, hotbar_itemcount)
 	static int l_hud_set_hotbar_itemcount(lua_State *L);
 

src/server.cpp

@@ -646,7 +646,7 @@ void Server::AsyncRunStep(bool initial_step)
 			/*
 				Send player breath if changed
 			*/
-			if(playersao->m_breath_not_sent){
+			if(playersao->m_breath_not_sent) {
 				SendPlayerBreath(*i);
 			}
 
@@ -2202,6 +2202,7 @@ void Server::ProcessData(u8 *data, u32 datasize, u16 peer_id)
 		std::istringstream is(datastring, std::ios_base::binary);
 		u16 breath = readU16(is);
 		playersao->setBreath(breath);
+		m_script->player_event(playersao,"breath_changed");
 	}
 	else if(command == TOSERVER_PASSWORD)
 	{
@@ -3289,6 +3290,7 @@ void Server::SendHUDAdd(u16 peer_id, u32 id, HudElement *form)
 	writeV2F1000(os, form->align);
 	writeV2F1000(os, form->offset);
 	writeV3F1000(os, form->world_pos);
+	writeV2S32(os,form->size);
 
 	// Make data buffer
 	std::string s = os.str();
@@ -3335,6 +3337,9 @@ void Server::SendHUDChange(u16 peer_id, u32 id, HudElementStat stat, void *value
 		case HUD_STAT_WORLD_POS:
 			writeV3F1000(os, *(v3f *)value);
 			break;
+		case HUD_STAT_SIZE:
+			writeV2S32(os,*(v2s32 *)value);
+			break;
 		case HUD_STAT_NUMBER:
 		case HUD_STAT_ITEM:
 		case HUD_STAT_DIR:
@@ -3445,6 +3450,7 @@ void Server::SendPlayerHP(u16 peer_id)
 	assert(playersao);
 	playersao->m_hp_not_sent = false;
 	SendHP(peer_id, playersao->getHP());
+	m_script->player_event(playersao,"health_changed");
 
 	// Send to other clients
 	std::string str = gob_cmd_punched(playersao->readDamage(), playersao->getHP());
@@ -3458,6 +3464,7 @@ void Server::SendPlayerBreath(u16 peer_id)
 	PlayerSAO *playersao = getPlayerSAO(peer_id);
 	assert(playersao);
 	playersao->m_breath_not_sent = false;
+	m_script->player_event(playersao,"breath_changed");
 	SendBreath(peer_id, playersao->getBreath());
 }
 
@@ -4588,6 +4595,8 @@ bool Server::hudSetFlags(Player *player, u32 flags, u32 mask) {
 		return false;
 
 	SendHUDSetFlags(player->peer_id, flags, mask);
+
+	m_script->player_event(player->getPlayerSAO(),"hud_changed");
 	return true;
 }