mirror of
https://github.com/t-affeldt/climate_api.git
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98 lines
3.0 KiB
Lua
98 lines
3.0 KiB
Lua
--[[
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# HUD Overlay Effect
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Use this effect to display a fullscreen image as part of a player's HUD.
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Expects a table as the parameter containing the following values:
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- ``file <string>``: The name (including file ending) if the image to be displayed
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- ``z_index <number>`` (optional): The z_index to forward to player.hud_add. Defaults to 1
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- ``color_correction <bool>`` (optional): Whether the image should automatically darken based on current light. Defaults to false.
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]]
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if not climate_mod.settings.hud_overlay then return end
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local EFFECT_NAME = "climate_api:hud_overlay"
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local handles = {}
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local function apply_hud(pname, weather, hud)
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local player = minetest.get_player_by_name(pname)
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if handles[pname] == nil then handles[pname] = {} end
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if handles[pname][weather] ~= nil then
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player:hud_remove(handles[pname][weather])
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end
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local file
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if hud.color_correction then
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local pos = vector.add(player:get_pos(), {x = 0, y = 1, z = 0})
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local light = math.floor(math.max(minetest.env:get_node_light(pos) / 15, 0.2) * 256)
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local shadow = 256 - light
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local dark_file = hud.file .. "^[multiply:#000000ff^[opacity:" .. shadow
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local light_file = hud.file .. "^[opacity:" .. light
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file = "(" .. light_file .. ")^(" .. dark_file .. ")"
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else
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file = hud.file
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end
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local handle = player:hud_add({
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name = weather,
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hud_elem_type = "image",
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position = {x = 0, y = 0},
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alignment = {x = 1, y = 1},
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scale = { x = -100, y = -100},
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z_index = hud.z_index,
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text = file,
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offset = {x = 0, y = 0}
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})
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handles[pname][weather] = handle
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end
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local function remove_hud(pname, weather, hud)
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if handles[pname] == nil or handles[pname][weather] == nil then return end
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local handle = handles[pname][weather]
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local player = minetest.get_player_by_name(pname)
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player:hud_remove(handle)
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handles[pname][weather] = nil
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end
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local function start_effect(player_data)
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for playername, data in pairs(player_data) do
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for weather, value in pairs(data) do
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apply_hud(playername, weather, value)
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end
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end
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end
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local function handle_effect(player_data, prev_data)
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for playername, data in pairs(player_data) do
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for weather, value in pairs(data) do
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if prev_data[playername][weather] == nil
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or value.color_correction == true
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or prev_data[playername][weather].color_correction == true
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or value.file ~= prev_data[playername][weather].file
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or value.z_index ~= prev_data[playername][weather].z_index
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then
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apply_hud(playername, weather, value)
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end
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end
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end
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for playername, data in pairs(prev_data) do
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for weather, value in pairs(data) do
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if player_data[playername][weather] == nil then
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remove_hud(playername, weather, value)
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end
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end
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end
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end
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local function stop_effect(prev_data)
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for playername, data in pairs(prev_data) do
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for weather, value in pairs(data) do
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remove_hud(playername, weather, value)
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end
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end
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end
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climate_api.register_effect(EFFECT_NAME, start_effect, "start")
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climate_api.register_effect(EFFECT_NAME, handle_effect, "tick")
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climate_api.register_effect(EFFECT_NAME, stop_effect, "stop")
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