merged gui

cybersyn/scripts/gui/util.lua

@@ -0,0 +1,90 @@
+local gui = require("__flib__.gui-lite")
+local format = require("__flib__.format")
+
+local util = {}
+
+--- Create a flying text at the player's cursor with an error sound.
+--- @param player LuaPlayer
+--- @param message LocalisedString
+function util.error_flying_text(player, message)
+  player.create_local_flying_text({ create_at_cursor = true, text = message })
+  player.play_sound({ path = "utility/cannot_build" })
+end
+
+function util.gui_list(parent, iterator, test, build, update, ...)
+  local children = parent.children
+  local i = 0
+
+  for k, v in table.unpack(iterator) do
+    local passed = test(v, k, i, ...)
+    if passed then
+      i = i + 1
+      local child = children[i]
+      if not child then
+        gui.build(parent, { build(...) })
+        child = parent.children[i]
+      end
+      gui.update(child, update(v, k, i, ...))
+    end
+  end
+
+  for j = i + 1, #children do
+    children[j].destroy()
+  end
+end
+
+--- Updates a slot table based on the passed criteria.
+--- @param manifest Manifest
+--- @param color string
+--- @return GuiElemDef[]
+function util.slot_table_build(manifest, color)
+  local children = {}
+  local i = 1
+  for _, item in pairs(manifest) do
+    local name = item.name
+    local sprite
+    if item.type then
+      sprite = item.type .. "/" .. name
+    else
+      sprite = string.gsub(name, ",", "/")
+    end
+    if game.is_valid_sprite_path(sprite) then
+      children[i] = {
+        type = "sprite-button",
+        enabled = false,
+        style = "ltnm_small_slot_button_" .. color,
+        sprite = sprite,
+        tooltip = {
+          "",
+          "[img=" .. sprite  .. "]",
+          { "item-name." .. name },
+          "\n"..format.number(count),
+        },
+      }
+      i = i + 1
+    end
+  end
+  return children
+end
+
+function util.sorted_iterator(arr, src_tbl, sort_state)
+  local step = sort_state and 1 or -1
+  local i = sort_state and 1 or #arr
+
+  return function()
+    local j = i + step
+    if arr[j] then
+      i = j
+      local arr_value = arr[j]
+      return arr_value, src_tbl[arr_value]
+    end
+  end,
+  arr
+end
+
+local MAX_INT = 2147483648 -- math.pow(2, 31)
+function util.signed_int32(val)
+  return (val >= MAX_INT and val - (2 * MAX_INT)) or val
+end
+
+return util