make apple trees check a region before being placed

Author: BPR02

gm4_apple_trees/data/gm4_apple_trees/function/sapling/generate_tree.mcfunction

@@ -5,6 +5,8 @@
 
 # place jigsaw gm4_apple_trees:apple_trees gm4_apple_trees:trunk 2 ~ ~1 ~
     # jigsaw generation not usable after world-gen due to inherent position-based randomizaton
+execute store result score $blocks_moved gm4_apple_data run clone ~-4 ~1 ~-4 ~4 ~7 ~4 ~-4 ~1 ~-4 filtered #gm4_apple_trees:tree_placeable force
+execute unless score $blocks_moved gm4_apple_data matches 567 run return fail
 function gm4_apple_trees:sapling/grow/generate_random_tree
 execute if block ~ ~-1 ~ grass_block run setblock ~ ~-1 ~ dirt
 execute positioned ~ ~1 ~ as @e[type=armor_stand,tag=gm4_apple_uninitialized,distance=..6] run function gm4_apple_trees:leaf/initialize

gm4_apple_trees/data/gm4_apple_trees/tags/block/tree_placeable.json

@@ -0,0 +1,8 @@
+{
+    "values": [
+        "#minecraft:replaceable_by_trees",
+        "#air",
+        "#minecraft:logs",
+        "#minecraft:saplings"
+    ]
+}