152 lines
4.5 KiB
Lua
152 lines
4.5 KiB
Lua
smart_sfinv_api = {
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registered_enhancements = {}
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}
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----------------------------------------------
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-- API: register new enhancement
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----------------------------------------------
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--[[
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Methods:
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- make_formspec(enh, player, context, content, show_inv)
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- get_nav_fs(enh, player, context, nav, current_idx)
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- receive_fields(handler, player, context, fields)
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Method does set Attributes:
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- enh.formspec_size
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- enh.formspec_size_add_w
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- enh.formspec_size_add_h
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- enh.formspec_before_navfs
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- enh.formspec_after_navfs
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- enh.formspec_after_content
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- enh.theme_main - Theme
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- enh.theme_inv - Player inventory fields
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- enh.custom_nav_fs - if set, default is skipped
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]]
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function smart_sfinv_api.register_enhancement(def)
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table.insert(smart_sfinv_api.registered_enhancements, def)
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end
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----------------------------------------------
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-- Enhancement handler
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----------------------------------------------
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local enh_handler_class = {
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formspec_before_navfs = "",
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formspec_after_navfs = "",
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formspec_after_content = "",
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formspec_size_add_w = 0,
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formspec_size_add_h = 0,
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}
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smart_sfinv_api.defaults = enh_handler_class
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local enh_handler_class_meta = {__index = enh_handler_class }
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function enh_handler_class:run_enhancements(enh_method, ...)
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for _, enh in ipairs(smart_sfinv_api.registered_enhancements) do
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if enh[enh_method] then
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enh[enh_method](self, ...)
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end
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end
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end
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----------------------------------------------
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-- Get the enhancement handler
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----------------------------------------------
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function smart_sfinv_api.get_handler( context )
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context.sfinv_navfs_handler = context.sfinv_navfs_handler or setmetatable( {}, enh_handler_class_meta)
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return context.sfinv_navfs_handler
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end
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----------------------------------------------
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-- Redefnition sfinv.get_nav_fs
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----------------------------------------------
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local orig_get_nav_fs = sfinv.get_nav_fs
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function sfinv.get_nav_fs(player, context, nav, current_idx)
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-- Dummy access
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if not nav then
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return ""
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end
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local handler = smart_sfinv_api.get_handler( context )
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handler:run_enhancements("get_nav_fs", player, context, nav, current_idx)
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if handler.custom_nav_fs then
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return handler.custom_nav_fs
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else
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return orig_get_nav_fs(player, context, nav, current_idx)
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end
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end
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----------------------------------------------
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-- Redefinition sfinv.make_formspec
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----------------------------------------------
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local orig_make_formspec = sfinv.make_formspec
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function sfinv.make_formspec(player, context, content, show_inv, size)
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context.sfinv_navfs_handler = nil -- initialize handler
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local handler = smart_sfinv_api.get_handler( context )
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if size then
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handler.formspec_size = size
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end
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handler.formspec_size_add_w = 0
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handler.formspec_size_add_h = 0
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local nav_fs = sfinv.get_nav_fs(player, context, context.nav_titles, context.nav_idx)
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handler:run_enhancements("make_formspec", player, context, content, show_inv)
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local new_size
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if handler.formspec_size_add_w ~= 0 or handler.formspec_size_add_h ~= 0 then
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local b = "false"
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local w, h = string.match(handler.formspec_size, "%[([%d.]+)%,([%d.]+)%]")
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if not w or not h then
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w, h, b = string.match(handler.formspec_size, "%[([%d.]+)%,([%d.]+)%;(%s+)%]")
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end
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w = w + handler.formspec_size_add_w
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h = h + handler.formspec_size_add_h
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new_size = "size[" .. w .. "," .. h .. ";" .. b .."]"
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end
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local tmp = {
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new_size or handler.formspec_size,
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handler.theme_main,
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handler.formspec_before_navfs,
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nav_fs,
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handler.formspec_after_navfs,
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show_inv and handler.theme_inv or "",
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content,
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handler.formspec_after_content
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}
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return table.concat(tmp, "")
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end
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----------------------------------------------
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-- Additional on_player_receive_fields
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----------------------------------------------
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minetest.register_on_player_receive_fields(function(player, formname, fields)
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if formname ~= "" or not sfinv.enabled then
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return false
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end
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-- Get Context
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local name = player:get_player_name()
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local context = sfinv.contexts[name]
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if not context then
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sfinv.set_player_inventory_formspec(player)
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return false
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end
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local handler = smart_sfinv_api.get_handler( context )
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handler:run_enhancements("receive_fields", player, context, fields)
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end)
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-----------------------------------------------
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--- Initialization: hacky access to some default variables
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-----------------------------------------------
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local _dummy_page = orig_make_formspec(nil, {}, "|", true, nil)
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enh_handler_class.formspec_size, enh_handler_class.theme_inv, enh_handler_class.theme_main = _dummy_page:match("(size%[[%d.,]+%]*)([^|]*)|([^|]*)")
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