293 lines
8.1 KiB
Lua
293 lines
8.1 KiB
Lua
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local S = minetest.get_translator("mcl_burning")
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function mcl_burning.get_default(datatype)
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local default_table = {string = "", float = 0.0, int = 0, bool = false}
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return default_table[datatype]
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end
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function mcl_burning.get(obj, datatype, name)
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local key
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if obj:is_player() then
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local meta = obj:get_meta()
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return meta["get_" .. datatype](meta, "mcl_burning:" .. name)
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else
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local luaentity = obj:get_luaentity()
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return luaentity["mcl_burning_" .. name] or mcl_burning.get_default(datatype)
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end
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end
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function mcl_burning.set(obj, datatype, name, value)
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if obj:is_player() then
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local meta = obj:get_meta()
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meta["set_" .. datatype](meta, "mcl_burning:" .. name, value or mcl_burning.get_default(datatype))
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else
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local luaentity = obj:get_luaentity()
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if mcl_burning.get_default(datatype) == value then
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value = nil
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end
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luaentity["mcl_burning_" .. name] = value
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end
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end
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function mcl_burning.is_burning(obj)
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return mcl_burning.get(obj, "float", "burn_time") > 0
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end
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function mcl_burning.is_affected_by_rain(obj)
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return mcl_weather.get_weather() == "rain" and mcl_weather.is_outdoor(obj:get_pos())
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end
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function mcl_burning.get_collisionbox(obj)
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local box = obj:get_properties().collisionbox
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return vector.new(box[1], box[2], box[3]), vector.new(box[4], box[5], box[6])
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end
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function mcl_burning.get_touching_nodes(obj, nodenames)
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local pos = obj:get_pos()
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local box = obj:get_properties().collisionbox
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local minp, maxp = mcl_burning.get_collisionbox(obj)
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local nodes = minetest.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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function mcl_burning.get_highest_group_value(obj, groupname)
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local nodes = mcl_burning.get_touching_nodes(obj, "group:" .. groupname, true)
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local highest_group_value = 0
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for _, pos in pairs(nodes) do
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local node = minetest.get_node(pos)
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local group_value = minetest.get_item_group(node.name, groupname)
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if group_value > highest_group_value then
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highest_group_value = group_value
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end
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end
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return highest_group_value
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end
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function mcl_burning.damage(obj)
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local luaentity = obj:get_luaentity()
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local health
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if luaentity then
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health = luaentity.health
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end
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local hp = health or obj:get_hp()
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if hp <= 0 then
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return
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end
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local do_damage = true
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if obj:is_player() then
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if mcl_potions.player_has_effect(obj, "fire_proof") then
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do_damage = false
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else
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local name = obj:get_player_name()
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armor.last_damage_types[name] = "fire"
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local deathmsg = S("@1 burned to death.", name)
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local reason = mcl_burning.get(obj, "string", "reason")
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if reason ~= "" then
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deathmsg = S("@1 was burned by @2.", name, reason)
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end
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mcl_death_messages.player_damage(obj, deathmsg)
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end
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else
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if luaentity.fire_damage_resistant then
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do_damage = false
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end
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end
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if do_damage then
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local damage = mcl_burning.get(obj, "float", "damage")
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if damage == 0 then
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damage = 1
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end
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local new_hp = hp - damage
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obj:set_hp(new_hp)
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if health then
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luaentity.health = new_hp
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end
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end
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end
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function mcl_burning.set_on_fire(obj, burn_time, damage, reason)
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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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end
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local old_burn_time = mcl_burning.get(obj, "float", "burn_time")
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local max_fire_prot_lvl = 0
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if obj:is_player() then
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local inv = obj:get_inventory()
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for i = 2, 5 do
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local stack = inv:get_stack("armor", i)
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local fire_prot_lvl = mcl_enchanting.get_enchantment(stack, "fire_protection")
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max_fire_prot_lvl = math.max(max_fire_prot_lvl, fire_prot_lvl)
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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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if old_burn_time <= burn_time then
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local sound_id = mcl_burning.get(obj, "int", "sound_id")
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if sound_id == 0 then
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sound_id = minetest.sound_play("fire_fire", {
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object = obj,
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gain = 0.18,
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max_hear_distance = 32,
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loop = true,
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}) + 1
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end
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local hud_id
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if obj:is_player() then
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hud_id = mcl_burning.get(obj, "int", "hud_id")
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if hud_id == 0 then
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hud_id = obj: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 = "fire_basic_flame.png",
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z_index = 1000,
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}) + 1
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end
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end
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mcl_burning.set(obj, "float", "burn_time", burn_time)
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mcl_burning.set(obj, "float", "damage", damage)
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mcl_burning.set(obj, "string", "reason", reason)
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mcl_burning.set(obj, "int", "hud_id", hud_id)
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mcl_burning.set(obj, "int", "sound_id", sound_id)
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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)
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local obj_size = obj:get_properties().visual_size
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local vertical_grow_factor = 1.1
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local horizontal_grow_factor = 0.9
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local grow_vector = vector.new(horizontal_grow_factor, vertical_grow_factor, horizontal_grow_factor)
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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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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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mcl_burning.update_animation_frame(obj, fire_entity, 0)
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end
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end
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function mcl_burning.extinguish(obj)
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if mcl_burning.is_burning(obj) then
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local sound_id = mcl_burning.get(obj, "int", "sound_id") - 1
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minetest.sound_stop(sound_id)
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if obj:is_player() then
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local hud_id = mcl_burning.get(obj, "int", "hud_id") - 1
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obj:hud_remove(hud_id)
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end
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mcl_burning.set(obj, "float", "damage")
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mcl_burning.set(obj, "string", "reason")
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mcl_burning.set(obj, "float", "burn_time")
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mcl_burning.set(obj, "float", "damage_timer")
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mcl_burning.set(obj, "int", "hud_id")
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mcl_burning.set(obj, "int", "sound_id")
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end
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end
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function mcl_burning.catch_fire_tick(obj, dtime)
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if mcl_burning.is_affected_by_rain(obj) or #mcl_burning.get_touching_nodes(obj, "group:puts_out_fire") > 0 then
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mcl_burning.extinguish(obj)
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else
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local set_on_fire_value = mcl_burning.get_highest_group_value(obj, "set_on_fire")
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if set_on_fire_value > 0 then
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mcl_burning.set_on_fire(obj, set_on_fire_value)
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end
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end
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end
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function mcl_burning.tick(obj, dtime)
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local burn_time = mcl_burning.get(obj, "float", "burn_time") - dtime
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if burn_time <= 0 then
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mcl_burning.extinguish(obj)
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else
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mcl_burning.set(obj, "float", "burn_time", burn_time)
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local damage_timer = mcl_burning.get(obj, "float", "damage_timer") + dtime
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if damage_timer >= 1 then
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damage_timer = 0
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mcl_burning.damage(obj)
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end
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mcl_burning.set(obj, "float", "damage_timer", damage_timer)
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end
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mcl_burning.catch_fire_tick(obj, dtime)
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end
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function mcl_burning.update_animation_frame(obj, fire_entity, animation_frame)
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local fire_texture = "fire_basic_flame_animated.png^[opacity:180^[verticalframe:" .. mcl_burning.animation_frames .. ":" .. animation_frame
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fire_entity:set_properties({textures = {"blank.png", "blank.png", fire_texture, fire_texture, fire_texture, fire_texture}})
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if obj:is_player() then
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local hud_id = mcl_burning.get(obj, "int", "hud_id") - 1
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obj:hud_change(hud_id, "text", fire_texture)
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end
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end
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function mcl_burning.fire_entity_step(self, dtime)
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if self.removed then
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return
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end
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local obj = self.object
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local parent = obj:get_attach()
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local do_remove
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self.doing_step = true
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if not parent or not mcl_burning.is_burning(parent) then
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do_remove = true
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else
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for _, other in ipairs(minetest.get_objects_inside_radius(obj:get_pos(), 0)) do
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local luaentity = obj:get_luaentity()
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if luaentity and luaentity.name == "mcl_burning:fire" and not luaentity.doing_step and not luaentity.removed then
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do_remove = true
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break
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end
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end
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end
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self.doing_step = false
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if do_remove then
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self.removed = true
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obj:remove()
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return
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end
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local animation_timer = self.animation_timer + dtime
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if animation_timer >= 0.015 then
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animation_timer = 0
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local animation_frame = self.animation_frame + 1
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if animation_frame > mcl_burning.animation_frames - 1 then
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animation_frame = 0
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end
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mcl_burning.update_animation_frame(parent, obj, animation_frame)
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self.animation_frame = animation_frame
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end
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self.animation_timer = animation_timer
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end
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