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https://github.com/wesnoth/wesnoth
synced 2025-04-28 03:35:27 +00:00
af58b33aca
This means [object], [advancement], and [trait] tags within [modify_unit] can now use delayed_variable_substitution=yes. This is currently needed for adding teleport, backstab, and leadership abilities.
80 lines
2.9 KiB
Lua
80 lines
2.9 KiB
Lua
local helper = wesnoth.require "lua/helper.lua"
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local utils = wesnoth.require "lua/wml-utils.lua"
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local wml_actions = wesnoth.wml_actions
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function wml_actions.modify_unit(cfg)
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local unit_variable = "LUA_modify_unit"
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local function handle_attributes(cfg, unit_path, toplevel)
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for current_key, current_value in pairs(helper.shallow_parsed(cfg)) do
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if type(current_value) ~= "table" and (not toplevel or current_key ~= "type") then
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wesnoth.set_variable(string.format("%s.%s", unit_path, current_key), current_value)
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end
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end
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end
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local function handle_child(cfg, unit_path)
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local children_handled = {}
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local cfg = helper.shallow_parsed(cfg)
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handle_attributes(cfg, unit_path)
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for current_index, current_table in ipairs(cfg) do
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local current_tag = current_table[1]
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local tag_index = children_handled[current_tag] or 0
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handle_child(current_table[2], string.format("%s.%s[%u]",
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unit_path, current_tag, tag_index))
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children_handled[current_tag] = tag_index + 1
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end
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end
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local filter = helper.get_child(cfg, "filter") or helper.wml_error "[modify_unit] missing required [filter] tag"
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local function handle_unit(unit_num)
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local children_handled = {}
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local unit_path = string.format("%s[%u]", unit_variable, unit_num)
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local this_unit = wesnoth.get_variable(unit_path)
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wesnoth.set_variable("this_unit", this_unit)
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handle_attributes(cfg, unit_path, true)
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for current_index, current_table in ipairs(helper.shallow_parsed(cfg)) do
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local current_tag = current_table[1]
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if current_tag == "filter" then
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-- nothing
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elseif current_tag == "object" or current_tag == "trait" or current_tag == "advancement" then
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local mod = current_table[2]
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if mod.delayed_variable_substitution then
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mod = helper.literal(mod)
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else
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mod = helper.parsed(mod)
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end
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local unit = wesnoth.get_variable(unit_path)
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unit = wesnoth.create_unit(unit)
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wesnoth.add_modification(unit, current_tag, mod)
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unit = unit.__cfg;
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wesnoth.set_variable(unit_path, unit)
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else
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local tag_index = children_handled[current_tag] or 0
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handle_child(current_table[2], string.format("%s.%s[%u]",
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unit_path, current_tag, tag_index))
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children_handled[current_tag] = tag_index + 1
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end
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end
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if cfg.type then
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if cfg.type ~= "" then wesnoth.set_variable(unit_path .. ".advances_to", cfg.type) end
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wesnoth.set_variable(unit_path .. ".experience", wesnoth.get_variable(unit_path .. ".max_experience"))
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end
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wml_actions.kill({ id = this_unit.id, animate = false })
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wml_actions.unstore_unit { variable = unit_path }
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end
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wml_actions.store_unit { {"filter", filter}, variable = unit_variable }
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local max_index = wesnoth.get_variable(unit_variable .. ".length") - 1
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local this_unit = utils.start_var_scope("this_unit")
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for current_unit = 0, max_index do
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handle_unit(current_unit)
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end
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utils.end_var_scope("this_unit", this_unit)
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wesnoth.set_variable(unit_variable)
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end |