forked from VoxeLibre/VoxeLibre
Merge pull request 'solar panels: No crash when minetest.get_natural_light() return nil' (#3640) from spanels into master
Reviewed-on: MineClone2/MineClone2#3640 Reviewed-by: chmodsayshello <chmodsayshello@hotmail.com>
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commit
32a60c888b
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@ -1,55 +1,8 @@
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local S = minetest.get_translator(minetest.get_current_modname())
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local function path_to_sunlight_exists(position, light_level)
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local neighbours = {
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{ x = 0, y = 0, z =-1 },
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{ x = 0, y = 0, z = 1 },
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{ x = 0, y =-1, z = 0 },
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{ x = 0, y = 1, z = 0 },
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{ x =-1, y = 0, z = 0 },
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{ x = 1, y = 0, z = 0 },
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}
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for i=1, #neighbours do
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local offset = neighbours[i]
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local position_new = vector.add(
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position,
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offset
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)
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local light_level_new = minetest.get_node_light(
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position_new,
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nil
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)
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if 15 == light_level_new then
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-- found the sunlight
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return true
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elseif light_level_new > light_level then
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-- search where light is brighter
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if path_to_sunlight_exists(
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position_new,
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light_level_new
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) then
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return true
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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 sunlight_visible(position)
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local light_level = mcl_util.get_natural_light(position)
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if light_level >= 12 then
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--minetest.log("Light is greater than 12")
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return true
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else
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local time = minetest.get_timeofday() * 24000
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-- only check light level during day
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if time > 6000 and time < 18000 then
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light_level = minetest.get_node_light(position, nil)
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if light_level >= 12 then
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return path_to_sunlight_exists(position, 12)
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end
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end
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end
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return false
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return light_level ~= nil and light_level >= 12
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end
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local boxes = { -8/16, -8/16, -8/16, 8/16, -2/16, 8/16 }
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