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-rw-r--r--builtin/statbars.lua160
1 files changed, 160 insertions, 0 deletions
diff --git a/builtin/statbars.lua b/builtin/statbars.lua
new file mode 100644
index 000000000..ca656a974
--- /dev/null
+++ b/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)