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Merge pull request 'Fix fire HUD' (#2042) from kabou/MineClone2:fix-burning-HUD into master
Reviewed-on: https://git.minetest.land/MineClone2/MineClone2/pulls/2042
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@ -26,20 +26,64 @@ function mcl_burning.get_collisionbox(obj, smaller, storage)
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end
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end
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local find_nodes_in_area = minetest.find_nodes_in_area
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function mcl_burning.get_touching_nodes(obj, nodenames, storage)
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local pos = obj:get_pos()
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local minp, maxp = mcl_burning.get_collisionbox(obj, true, storage)
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local nodes = minetest.find_nodes_in_area(vector.add(pos, minp), vector.add(pos, maxp), nodenames)
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local nodes = find_nodes_in_area(vector.add(pos, minp), vector.add(pos, maxp), nodenames)
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return nodes
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end
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-- Manages the fire animation on a burning player's HUD
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--
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-- Parameters:
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-- player - a valid player object;
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--
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-- If the player already has a fire HUD, updates the burning animation.
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-- If the fire does not have a fire HUD, initializes the HUD.
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--
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function mcl_burning.update_hud(player)
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local animation_frames = tonumber(minetest.settings:get("fire_animation_frames")) or 8
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local hud_flame_animated = "mcl_burning_hud_flame_animated.png^[opacity:180^[verticalframe:" .. animation_frames .. ":"
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local storage = mcl_burning.get_storage(player)
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if not storage.fire_hud_id then
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storage.animation_frame = 1
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storage.fire_hud_id = player:hud_add({
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hud_elem_type = "image",
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position = {x = 0.5, y = 0.5},
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scale = {x = -100, y = -100},
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text = hud_flame_animated .. storage.animation_frame,
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z_index = 1000,
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})
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else
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storage.animation_frame = storage.animation_frame + 1
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if storage.animation_frame > animation_frames - 1 then
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storage.animation_frame = 0
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end
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player:hud_change(storage.fire_hud_id, "text", hud_flame_animated .. storage.animation_frame)
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end
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end
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-- Sets and object state as burning and adds a fire animation to the object.
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--
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-- Parameters:
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-- obj - may be a player or a lua_entity;
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-- burn_time - sets the object's burn duration;
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--
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-- If obj is a player, adds a fire animation to the HUD, if obj is a
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-- lua_entity, adds an animated fire entity to obj.
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-- The effective burn duration is modified by obj's armor protection.
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-- If obj was already burning, its burn duration is updated if the current
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-- duration is less than burn_time.
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-- If obj is dead, fireproof or a creative player, this function does nothing.
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--
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function mcl_burning.set_on_fire(obj, burn_time)
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if obj:get_hp() < 0 then
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return
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end
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local storage = mcl_burning.get_storage(obj)
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local luaentity = obj:get_luaentity()
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if luaentity and luaentity.fire_resistant then
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return
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@ -60,43 +104,42 @@ function mcl_burning.set_on_fire(obj, burn_time)
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end
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end
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end
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if max_fire_prot_lvl > 0 then
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burn_time = burn_time - math.floor(burn_time * max_fire_prot_lvl * 0.15)
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end
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end
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if not storage.burn_time or burn_time >= storage.burn_time then
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if obj:is_player() then
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mcl_burning.channels[obj]:send_all(tostring(mcl_burning.animation_frames))
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mcl_burning.channels[obj]:send_all("start")
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local storage = mcl_burning.get_storage(obj)
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if storage.burn_time then
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if burn_time > storage.burn_time then
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storage.burn_time = burn_time
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end
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storage.burn_time = burn_time
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storage.fire_damage_timer = 0
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return
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end
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storage.burn_time = burn_time
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storage.fire_damage_timer = 0
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local fire_entity = minetest.add_entity(obj:get_pos(), "mcl_burning:fire")
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local minp, maxp = mcl_burning.get_collisionbox(obj, false, storage)
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local obj_size = obj:get_properties().visual_size
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local minp, maxp = mcl_burning.get_collisionbox(obj, false, storage)
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local size = vector.subtract(maxp, minp)
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size = vector.multiply(size, vector.new(1.1, 1.2, 1.1))
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size = vector.divide(size, obj:get_properties().visual_size)
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local vertical_grow_factor = 1.2
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local horizontal_grow_factor = 1.1
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local grow_vector = vector.new(horizontal_grow_factor, vertical_grow_factor, horizontal_grow_factor)
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local fire_entity = minetest.add_entity(obj:get_pos(), "mcl_burning:fire")
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fire_entity:set_properties({visual_size = size})
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fire_entity:set_attach(obj, "", vector.new(0, size.y * 5, 0), vector.new(0, 0, 0))
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local size = vector.subtract(maxp, minp)
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size = vector.multiply(size, grow_vector)
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size = vector.divide(size, obj_size)
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local offset = vector.new(0, size.y * 10 / 2, 0)
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if obj:is_player() then
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mcl_burning.update_hud(obj)
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end
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fire_entity:set_properties({visual_size = size})
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fire_entity:set_attach(obj, "", offset, {x = 0, y = 0, z = 0})
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local fire_luaentity = fire_entity:get_luaentity()
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for _, other in pairs(minetest.get_objects_inside_radius(fire_entity:get_pos(), 0)) do
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local other_luaentity = other:get_luaentity()
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if other_luaentity and other_luaentity.name == "mcl_burning:fire" and other_luaentity ~= fire_luaentity then
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other:remove()
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break
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end
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-- FIXME: does this code make sense? It removes attached fire luaentities from
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-- another object that happen to be at the same position.
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local fire_luaentity = fire_entity:get_luaentity()
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for _, other in pairs(minetest.get_objects_inside_radius(fire_entity:get_pos(), 0)) do
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local other_luaentity = other:get_luaentity()
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if other_luaentity and other_luaentity.name == "mcl_burning:fire" and other_luaentity ~= fire_luaentity then
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other:remove()
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break
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end
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end
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end
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@ -105,7 +148,9 @@ function mcl_burning.extinguish(obj)
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if mcl_burning.is_burning(obj) then
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local storage = mcl_burning.get_storage(obj)
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if obj:is_player() then
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mcl_burning.channels[obj]:send_all("stop")
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if storage.fire_hud_id then
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obj:hud_remove(storage.fire_hud_id)
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end
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mcl_burning.storage[obj] = {}
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else
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storage.burn_time = nil
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@ -1,18 +1,27 @@
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local modpath = minetest.get_modpath(minetest.get_current_modname())
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local pairs = pairs
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local get_connected_players = minetest.get_connected_players
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local get_item_group = minetest.get_item_group
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mcl_burning = {
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storage = {},
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channels = {},
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animation_frames = tonumber(minetest.settings:get("fire_animation_frames")) or 8
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-- the storage table holds a list of objects (players,luaentities) and tables
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-- associated with these objects. These tables have the following attributes:
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-- burn_time:
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-- Remaining time that object will burn.
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-- fire_damage_timer:
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-- Timer for dealing damage every second while burning.
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-- fire_hud_id:
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-- HUD id of the flames animation on a burning player's HUD.
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-- animation_frame:
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-- The HUD's current animation frame, used by update_hud().
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-- collisionbox_cache:
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-- Used by mcl_burning.get_collisionbox() to avoid recalculations.
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storage = {}
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}
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dofile(modpath .. "/api.lua")
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local pairs = pairs
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local get_connected_players = minetest.get_connected_players
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local get_item_group = minetest.get_item_group
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minetest.register_globalstep(function(dtime)
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for _, player in pairs(get_connected_players()) do
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local storage = mcl_burning.storage[player]
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@ -44,25 +53,36 @@ minetest.register_on_respawnplayer(function(player)
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mcl_burning.extinguish(player)
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end)
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function mcl_burning.init_player(player)
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local meta = player:get_meta()
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-- NOTE: mcl_burning:data may be "return nil" (which deserialize into nil) for reasons unknown.
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if meta:get_string("mcl_burning:data"):find("return nil", 1, true) then
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minetest.log("warning", "[mcl_burning] 'mcl_burning:data' player meta field is invalid! Please report this bug")
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minetest.register_on_joinplayer(function(player)
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local storage = {}
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local burn_data = player:get_meta():get_string("mcl_burning:data")
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if burn_data ~= "" then
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storage = minetest.deserialize(burn_data)
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end
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mcl_burning.storage[player] = meta:contains("mcl_burning:data") and minetest.deserialize(meta:get_string("mcl_burning:data")) or {}
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mcl_burning.channels[player] = minetest.mod_channel_join("mcl_burning:" .. player:get_player_name())
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mcl_burning.storage[player] = storage
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if storage.burn_time and storage.burn_time > 0 then
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mcl_burning.update_hud(player)
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end
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end)
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local function on_leaveplayer(player)
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local storage = mcl_burning.storage[player]
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storage.fire_hud_id = nil
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player:get_meta():set_string("mcl_burning:data", minetest.serialize(storage))
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mcl_burning.storage[player] = nil
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end
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minetest.register_on_joinplayer(function(player)
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mcl_burning.init_player(player)
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end)
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minetest.register_on_leaveplayer(function(player)
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player:get_meta():set_string("mcl_burning:data", minetest.serialize(mcl_burning.storage[player]))
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mcl_burning.storage[player] = nil
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on_leaveplayer(player)
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end)
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minetest.register_on_shutdown(function()
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for _,player in ipairs(minetest.get_connected_players()) do
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on_leaveplayer(player)
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end
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end)
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local animation_frames = tonumber(minetest.settings:get("fire_animation_frames")) or 8
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minetest.register_entity("mcl_burning:fire", {
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initial_properties = {
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@ -73,7 +93,7 @@ minetest.register_entity("mcl_burning:fire", {
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"mcl_burning_entity_flame_animated.png",
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"mcl_burning_entity_flame_animated.png"
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},
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spritediv = {x = 1, y = mcl_burning.animation_frames},
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spritediv = {x = 1, y = animation_frames},
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pointable = false,
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glow = -1,
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backface_culling = false,
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@ -81,26 +101,25 @@ minetest.register_entity("mcl_burning:fire", {
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animation_frame = 0,
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animation_timer = 0,
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on_activate = function(self)
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self.object:set_sprite({x = 0, y = 0}, mcl_burning.animation_frames, 1.0 / mcl_burning.animation_frames)
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self.object:set_sprite({x = 0, y = 0}, animation_frames, 1.0 / animation_frames)
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end,
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on_step = function(self)
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if not self:sanity_check() then
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self.object:remove()
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end
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end,
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sanity_check = function(self)
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on_step = function(self, dtime)
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local parent = self.object:get_attach()
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if not parent then
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return false
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self.object:remove()
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return
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end
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local storage = mcl_burning.get_storage(parent)
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if not storage or not storage.burn_time then
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return false
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self.object:remove()
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return
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end
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if parent:is_player() then
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self.animation_timer = self.animation_timer + dtime
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if self.animation_timer >= 0.1 then
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self.animation_timer = 0
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mcl_burning.update_hud(parent)
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end
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end
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return true
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end,
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})
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