82 lines
2.3 KiB
Lua
82 lines
2.3 KiB
Lua
-- LUALOCALS < ---------------------------------------------------------
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local math, minetest, nodecore, pairs, vector
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= math, minetest, nodecore, pairs, vector
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local math_exp, math_floor, math_random, math_sqrt
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= math.exp, math.floor, math.random, math.sqrt
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-- LUALOCALS > ---------------------------------------------------------
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local maxdist = 8
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local function getdps(pos)
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if nodecore.quenched(pos) then return 0 end
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local rel = {
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x = math_random() * 2 - 1,
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y = math_random() * 2 - 1,
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z = math_random() * 2 - 1
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}
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local len = vector.length(rel)
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if len == 0 or len > 1 then return end
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rel = vector.multiply(rel, maxdist / len)
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for pt in minetest.raycast(pos, vector.add(pos, rel), false, true) do
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local p = pt.under
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local n = minetest.get_node(p)
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local def = minetest.registered_items[n.name]
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local dps = def and def.groups and def.groups.damage_radiant
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if dps and dps > 0 then
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local r = vector.subtract(pos, p)
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local dsqr = vector.dot(r, r) / 2 + 1
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return dps / dsqr
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end
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if not (nodecore.air_pass(n) or def and def.sunlight_propagates)
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then return 0 end
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end
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return 0
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end
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local heat = {}
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nodecore.register_playerstep({
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label = "radiant heat damage",
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action = function(player, _, dtime)
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if nodecore.stasis or not nodecore.player_visible(player) then return end
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local pos = player:get_pos()
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pos.y = pos.y + 1
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local dps = getdps(pos)
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if not dps then return end
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local w = math_exp(-dtime)
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local pname = player:get_player_name()
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heat[pname] = (heat[pname] or 0) * w + dps * (1 - w)
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end
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})
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nodecore.interval(1, function()
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if nodecore.stasis then return end
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for _, p in pairs(minetest.get_connected_players()) do
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if nodecore.player_visible(p) then
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local pname = p:get_player_name()
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local ow = heat[pname]
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local img = ""
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if ow and ow > 0.1 then
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nodecore.addphealth(p, -ow, "radiant")
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ow = math_sqrt(ow - 0.1) * 255
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if ow > 255 then ow = 255 end
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img = "nc_player_health_radiant.png^[opacity:" .. math_floor(ow)
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end
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nodecore.hud_set(p, {
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label = "radiant",
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hud_elem_type = "image",
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position = {x = 0.5, y = 0.5},
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text = img,
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direction = 0,
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scale = {x = -100, y = -100},
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offset = {x = 0, y = 0},
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quick = true
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})
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end
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end
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end)
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