forked from mtcontrib/weather_pack
76 lines
2.5 KiB
Lua
76 lines
2.5 KiB
Lua
|
---------------------------------------
|
||
|
|
-- Happy Weather: Utilities / Helpers
|
||
|
|
|
||
|
|
-- License: MIT
|
||
|
|
|
||
|
|
-- Credits: xeranas
|
||
|
|
---------------------------------------
|
||
|
|
|
||
|
|
if hw_utils == nil then
|
||
|
|
hw_utils = {}
|
||
|
|
end
|
||
|
|
|
||
|
|
-- outdoor check based on node light level
|
||
|
|
hw_utils.is_outdoor = function(pos, offset_y)
|
||
|
|
if offset_y == nil then
|
||
|
|
offset_y = 0
|
||
|
|
end
|
||
|
|
|
||
|
|
if minetest.get_node_light({x=pos.x, y=pos.y + offset_y, z=pos.z}, 0.5) == 15 then
|
||
|
|
return true
|
||
|
|
end
|
||
|
|
return false
|
||
|
|
end
|
||
|
|
|
||
|
|
-- checks if player is undewater. This is needed in order to
|
||
|
|
-- turn off weather particles generation.
|
||
|
|
hw_utils.is_underwater = function(player)
|
||
|
|
local ppos = player:getpos()
|
||
|
|
local offset = player:get_eye_offset()
|
||
|
|
local player_eye_pos = {x = ppos.x + offset.x,
|
||
|
|
y = ppos.y + offset.y + 1.5,
|
||
|
|
z = ppos.z + offset.z}
|
||
|
|
local node_level = minetest.get_node_level(player_eye_pos)
|
||
|
|
if node_level == 8 or node_level == 7 then
|
||
|
|
return true
|
||
|
|
end
|
||
|
|
return false
|
||
|
|
end
|
||
|
|
|
||
|
|
-- trying to locate position for particles by player look direction for performance reason.
|
||
|
|
-- it is costly to generate many particles around player so goal is focus mainly on front view.
|
||
|
|
hw_utils.get_random_pos = function(player, offset)
|
||
|
|
local look_dir = player:get_look_dir()
|
||
|
|
local player_pos = player:getpos()
|
||
|
|
|
||
|
|
local random_pos_x = 0
|
||
|
|
local random_pos_y = 0
|
||
|
|
local random_pos_z = 0
|
||
|
|
|
||
|
|
if look_dir.x > 0 then
|
||
|
|
if look_dir.z > 0 then
|
||
|
|
random_pos_x = math.random(player_pos.x - offset.back, player_pos.x + offset.front) + math.random()
|
||
|
|
random_pos_z = math.random(player_pos.z - offset.back, player_pos.z + offset.front) + math.random()
|
||
|
|
else
|
||
|
|
random_pos_x = math.random(player_pos.x - offset.back, player_pos.x + offset.front) + math.random()
|
||
|
|
random_pos_z = math.random(player_pos.z - offset.front, player_pos.z + offset.back) + math.random()
|
||
|
|
end
|
||
|
|
else
|
||
|
|
if look_dir.z > 0 then
|
||
|
|
random_pos_x = math.random(player_pos.x - offset.front, player_pos.x + offset.back) + math.random()
|
||
|
|
random_pos_z = math.random(player_pos.z - offset.back, player_pos.z + offset.front) + math.random()
|
||
|
|
else
|
||
|
|
random_pos_x = math.random(player_pos.x - offset.front, player_pos.x + offset.back) + math.random()
|
||
|
|
random_pos_z = math.random(player_pos.z - offset.front, player_pos.z + offset.back) + math.random()
|
||
|
|
end
|
||
|
|
end
|
||
|
|
|
||
|
|
if offset.bottom ~= nil then
|
||
|
|
random_pos_y = math.random(player_pos.y - offset.bottom, player_pos.y + offset.top)
|
||
|
|
else
|
||
|
|
random_pos_y = player_pos.y + offset.top
|
||
|
|
end
|
||
|
|
|
||
|
|
|
||
|
|
return {x=random_pos_x, y=random_pos_y, z=random_pos_z}
|
||
|
|
end
|