added first version of concrete mod files

depends.txt

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+default
+moreblocks
+bucket

description.txt

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+You now can craft a batch of concrete with compressed cobble and water. The concrete flows and fills its space, then hardens every 30 seconds. It makes building paths easier, and you can play around with pouring concrete houses.

init.lua

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+minetest.register_node("concrete:concrete_cured", {
+	description = "Concrete",
+	tiles = {"concrete_cured.png"},
+	groups = {cracky = 3},
+	sounds = default.node_sound_stone_defaults(),
+
+})
+
+minetest.register_node("concrete:concrete_stair", {
+		description = "Concrete Stair",
+		tiles = {"concrete_cured.png"},
+    drawtype = "nodebox",
+    paramtype = "light",
+		paramtype2 = "facedir",
+    node_box = {
+        type = "fixed",
+        fixed = {
+            {-0.5, -0.5, -0.5, 0.5, 0, 0.5},
+            {-0.5, 0, 0, 0.5, 0.5, 0.5},
+        },
+    },
+		groups = {cracky = 3},
+		sounds = default.node_sound_stone_defaults()
+
+})
+
+
+minetest.register_node("concrete:concrete_uncured_source", {
+	description = "Batch of Wet Concrete",
+	drawtype = "liquid",
+
+	tiles = {"concrete_uncured.png"},
+
+	paramtype = "light",
+	walkable = false,
+	pointable = false,
+	diggable = false,
+	buildable_to = true,
+	is_ground_content = false,
+	drop = "",
+	drowning = 1,
+	liquidtype = "source",
+	liquid_alternative_flowing = "concrete:concrete_uncured_flowing",
+	liquid_alternative_source = "concrete:concrete_uncured_source",
+	liquid_viscosity = 7,
+	liquid_range = 4,
+	post_effect_color = {a = 0, r = 0, g = 0, b = 0},
+	groups = {liquid = 2},
+
+})
+
+minetest.register_node("concrete:concrete_uncured_flowing", {
+	description = "Uncured Flowing Concrete",
+	drawtype = "flowingliquid",
+
+	tiles = {"concrete_uncured.png"},
+	special_tiles = {
+		{
+			name = "concrete_uncured_animated.png",
+			backface_culling = false,
+			animation = {
+				type = "horizantal_frames",
+				aspect_w = 16,
+				aspect_h = 16,
+				length = 2.0,
+			},
+		},
+		{
+			name = "concrete_uncured_animated.png",
+			backface_culling = true,
+			animation = {
+				type = "horizontal_frames",
+				aspect_w = 16,
+				aspect_h = 16,
+				length = 2.0,
+			},
+		},
+	},
+
+	paramtype = "light",
+	paramtype2 = "flowingliquid",
+	walkable = false,
+	pointable = false,
+	diggable = false,
+	buildable_to = true,
+	is_ground_content = false,
+	drop = "",
+	drowning = 1,
+	liquidtype = "flowing",
+  liquid_alternative_flowing = "concrete:concrete_uncured_flowing",
+	liquid_alternative_source = "concrete:concrete_uncured_source",
+	liquid_viscosity = 5,
+	liquid_range = 4,
+	post_effect_color = {a = 0, r = 0, g = 0, b = 0},
+	groups = {liquid = 2, not_in_creative_inventory = 1},
+
+})
+
+
+minetest.register_abm({
+  nodenames = {"concrete:concrete_uncured_flowing","concrete:concrete_uncured_source"},
+  interval = 30,
+  chance = 1,
+  action = function(pos)
+    minetest.add_node(pos, {name = "concrete:concrete_cured"})
+  end,
+})
+
+
+minetest.register_craft({
+    type = "shapeless",
+    output = "concrete:concrete_uncured_source",
+    recipe = {
+        "moreblocks:cobble_compressed 12",
+        "bucket:bucket_water",
+    },
+		replacements = {
+			{"bucket:bucket_water","bucket:bucket_empty"}
+		}
+})
+
+minetest.register_craft({
+    output = "concrete:concrete_stair",
+    recipe = {
+        {"", "","concrete:concrete_cured"},
+				{"", "concrete:concrete_cured","concrete:concrete_cured"},
+				{"concrete:concrete_cured", "concrete:concrete_cured","concrete:concrete_cured"}
+    }
+
+})

license.txt

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+Graphics : Attribution 4.0 International (CC BY 4.0) 
+Code: End User's choice of LGPLv3 or LGPLv2+
+

mod.conf

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+name = concrete

readme.txt

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+Author: MisterE