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