From 5eddb0f02afb27bc9ed20b675943e37ae2a89f64 Mon Sep 17 00:00:00 2001
From: cron <example@example.local>
Date: Wed, 4 Nov 2020 23:23:31 +0000
Subject: [PATCH] sapscaffold: add small sapling scaffold CSM

---
 clientmods/mods.conf                    |  1 +
 clientmods/sapscaffold/init.lua         | 70 +++++++++++++++++++++++++
 clientmods/sapscaffold/settingtypes.txt |  1 +
 3 files changed, 72 insertions(+)
 create mode 100644 clientmods/sapscaffold/init.lua
 create mode 100644 clientmods/sapscaffold/settingtypes.txt

diff --git a/clientmods/mods.conf b/clientmods/mods.conf
index 8fe9d8b24..8918ae07d 100644
--- a/clientmods/mods.conf
+++ b/clientmods/mods.conf
@@ -31,3 +31,4 @@ load_mod_autodupe = true
 load_mod_randomscreenshot = true
 load_mod_util = true
 load_mod_cheats = true
+load_mod_sapscaffold = true
diff --git a/clientmods/sapscaffold/init.lua b/clientmods/sapscaffold/init.lua
new file mode 100644
index 000000000..e82fd304b
--- /dev/null
+++ b/clientmods/sapscaffold/init.lua
@@ -0,0 +1,70 @@
+local function find_swap(items)
+    for i, v in ipairs(items) do
+        local n = minetest.find_item(v)
+        if n then
+            minetest.localplayer:set_wield_index(n - 1)
+            return true
+        end
+    end
+    return false
+end
+
+local function in_list(val, list)
+    for i, v in ipairs(list) do
+        if v == val then
+            return true
+        end
+    end
+    return false
+end
+
+local function nilify_node(node)
+    if node and node.name == "air" then
+        return nil
+    end
+    return node
+end
+
+local dirt = {
+    "mcl_core:dirt",
+    "mcl_core:dirt_with_grass"
+}
+
+local saplings = {
+    "mcl_core:sapling",
+    "mcl_core:darksapling",
+    "mcl_core:junglesapling",
+    "mcl_core:sprucesapling",
+    "mcl_core:birchsapling",
+    "mcl_core:acaciasapling"
+}
+
+local function sapper()
+    local lp = minetest.localplayer:get_pos()
+    local below = vector.add(lp, {x = 0, y = -1, z = 0})
+    local node_here = nilify_node(minetest.get_node_or_nil(lp))
+    local node_under = nilify_node(minetest.get_node_or_nil(below))
+
+    -- if theres a node below its prob bad but its good if its dirt
+    if node_under and not in_list(node_under.name, dirt) then
+        return
+    end
+
+    if not node_under and find_swap(dirt) then
+        minetest.place_node(below)
+    end
+
+    if not node_here and find_swap(saplings) then
+        minetest.place_node(lp)
+    end
+end
+
+minetest.register_globalstep(function()
+    if minetest.settings:get_bool("scaffold_saplings") then
+        sapper()
+    end
+end)
+
+if minetest.register_cheat then
+    minetest.register_cheat("SapScaffold", "World", "scaffold_saplings")
+end
diff --git a/clientmods/sapscaffold/settingtypes.txt b/clientmods/sapscaffold/settingtypes.txt
new file mode 100644
index 000000000..9acb502f8
--- /dev/null
+++ b/clientmods/sapscaffold/settingtypes.txt
@@ -0,0 +1 @@
+sapling_scaffold (Scaffold with saplings and dirt) bool false