Add Rui's creeper mod code:

Forked from Git commit 036666e. Original repo & forum thread appear to
have been deleted.

tnt_function.lua

@@ -0,0 +1,195 @@
+-- From TNT
+local cid_data = {}
+local radius = tonumber(minetest.setting_get("tnt_radius") or 3)
+local large_radius = 5
+local loss_prob = {
+	["default:cobble"] = 3,
+	["default:dirt"] = 4,
+}
+minetest.after(0, function()
+	for name, def in pairs(minetest.registered_nodes) do
+		cid_data[minetest.get_content_id(name)] = {
+			name = name,
+			drops = def.drops,
+			flammable = def.groups.flammable,
+		}
+	end
+end)
+
+local function rand_pos(center, pos, radius)
+	pos.x = center.x + math.random(-radius, radius)
+	pos.z = center.z + math.random(-radius, radius)
+end
+
+local function eject_drops(drops, pos, radius)
+	local drop_pos = vector.new(pos)
+	for _, item in pairs(drops) do
+		local count = item:get_count()
+		local max = item:get_stack_max()
+		if count > max then
+			item:set_count(max)
+		end
+		while count > 0 do
+			if count < max then
+				item:set_count(count)
+			end
+			rand_pos(pos, drop_pos, radius)
+			local obj = minetest.add_item(drop_pos, item)
+			if obj then
+				obj:get_luaentity().collect = true
+				obj:setacceleration({x=0, y=-10, z=0})
+				obj:setvelocity({x=math.random(-3, 3), y=10,
+						z=math.random(-3, 3)})
+			end
+			count = count - max
+		end
+	end
+end
+
+local function add_drop(drops, item)
+	item = ItemStack(item)
+	local name = item:get_name()
+	if loss_prob[name] ~= nil and math.random(1, loss_prob[name]) == 1 then
+		return
+	end
+
+	local drop = drops[name]
+	if drop == nil then
+		drops[name] = item
+	else
+		drop:set_count(drop:get_count() + item:get_count())
+	end
+end
+
+local function destroy(drops, pos, cid)
+	if minetest.is_protected(pos, "") then
+		return
+	end
+	local def = cid_data[cid]
+	if def and def.on_blast then
+		def.on_blast(vector.new(pos), 1)
+		return
+	end
+	minetest.remove_node(pos)
+	if def then
+		local node_drops = minetest.get_node_drops(def.name, "")
+		for _, item in ipairs(node_drops) do
+			add_drop(drops, item)
+		end
+	end
+end
+
+
+local function calc_velocity(pos1, pos2, old_vel, power)
+	local vel = vector.direction(pos1, pos2)
+	vel = vector.normalize(vel)
+	vel = vector.multiply(vel, power)
+
+	-- Divide by distance
+	local dist = vector.distance(pos1, pos2)
+	dist = math.max(dist, 1)
+	vel = vector.divide(vel, dist)
+
+	-- Add old velocity
+	vel = vector.add(vel, old_vel)
+	return vel
+end
+
+local function entity_physics(pos, radius)
+	-- Make the damage radius larger than the destruction radius
+	radius = radius * 2
+	local objs = minetest.get_objects_inside_radius(pos, radius)
+	for _, obj in pairs(objs) do
+		local obj_pos = obj:getpos()
+		local obj_vel = obj:getvelocity()
+		local dist = math.max(1, vector.distance(pos, obj_pos))
+
+		if obj_vel ~= nil then
+			obj:setvelocity(calc_velocity(pos, obj_pos,
+					obj_vel, radius * 10))
+		end
+
+		local damage = (5 / dist) * radius
+		obj:set_hp(obj:get_hp() - damage)
+	end
+end
+
+local function add_effects(pos, radius)
+	minetest.add_particlespawner({
+		amount = 128,
+		time = 1,
+		minpos = vector.subtract(pos, radius / 2),
+		maxpos = vector.add(pos, radius / 2),
+		minvel = {x=-20, y=-20, z=-20},
+		maxvel = {x=20,  y=20,  z=20},
+		minacc = vector.new(),
+		maxacc = vector.new(),
+		minexptime = 1,
+		maxexptime = 3,
+		minsize = 8,
+		maxsize = 16,
+		texture = "creeper_smoke.png",
+	})
+end
+
+
+local function explode(pos, radius)
+	local pos = vector.round(pos)
+	local vm = VoxelManip()
+	local pr = PseudoRandom(os.time())
+	local p1 = vector.subtract(pos, radius)
+	local p2 = vector.add(pos, radius)
+	local minp, maxp = vm:read_from_map(p1, p2)
+	local a = VoxelArea:new({MinEdge = minp, MaxEdge = maxp})
+	local data = vm:get_data()
+
+	local drops = {}
+	local p = {}
+
+	local c_air = minetest.get_content_id("air")
+	local c_tnt = minetest.get_content_id("tnt:tnt")
+	local c_tnt_burning = minetest.get_content_id("tnt:tnt_burning")
+	local c_gunpowder = minetest.get_content_id("tnt:gunpowder")
+	local c_gunpowder_burning = minetest.get_content_id("tnt:gunpowder_burning")
+	local c_boom = minetest.get_content_id("tnt:boom")
+
+	for z = -radius, radius do
+	for y = -radius, radius do
+	local vi = a:index(pos.x + (-radius), pos.y + y, pos.z + z)
+	for x = -radius, radius do
+		if (x * x) + (y * y) + (z * z) <=
+				(radius * radius) + pr:next(-radius, radius) then
+			local cid = data[vi]
+			p.x = pos.x + x
+			p.y = pos.y + y
+			p.z = pos.z + z
+			if cid == c_tnt or cid == c_gunpowder then
+				burn(p)
+			elseif cid ~= c_tnt_burning and
+					cid ~= c_gunpowder_burning and
+					cid ~= c_air and
+					cid ~= c_boom then
+				destroy(drops, p, cid)
+			end
+		end
+		vi = vi + 1
+	end
+	end
+	end
+
+	return drops
+end
+
+function creeper.boom(pos,large)
+	local radius = radius
+	if large then
+		radius = large_radius
+	end
+	minetest.sound_play("creeper_explode", {pos=pos, gain=1.5, max_hear_distance=2*64})
+	minetest.set_node(pos, {name="tnt:boom"})
+	minetest.get_node_timer(pos):start(0.5)
+	local drops = explode(pos, radius)
+	entity_physics(pos, radius)
+	eject_drops(drops, pos, radius)
+	add_effects(pos, radius)
+end