Test with stuff + Forestry potential support

BM_src/forestry/api/farming/IFarmable.java

@@ -0,0 +1,54 @@
+package forestry.api.farming;
+
+import net.minecraft.item.ItemStack;
+import net.minecraft.world.World;
+
+/**
+ * IGermling describes a crop or other harvestable object and can be used to inspect item stacks and blocks for matches.
+ */
+public interface IFarmable {
+
+	/**
+	 * @param world
+	 * @param x
+	 * @param y
+	 * @param z
+	 * @return true if the block at the given location is a "sapling" for this type, i.e. a non-harvestable immature version of the crop.
+	 */
+	boolean isSaplingAt(World world, int x, int y, int z);
+
+	/**
+	 * @param world
+	 * @param x
+	 * @param y
+	 * @param z
+	 * @return {@link ICrop} if the block at the given location is a harvestable and mature crop, null otherwise.
+	 */
+	ICrop getCropAt(World world, int x, int y, int z);
+
+	/**
+	 * @param itemstack
+	 * @return true if the item is a valid germling (plantable sapling, seed, etc.) for this type.
+	 */
+	boolean isGermling(ItemStack itemstack);
+
+	/**
+	 * @param itemstack
+	 * @return true if the item is something that can drop from this type without actually being harvested as a crop. (Apples or sapling from decaying leaves.)
+	 */
+	boolean isWindfall(ItemStack itemstack);
+
+	/**
+	 * Plants a sapling by manipulating the world. The {@link IFarmLogic} should have verified the given location as valid. Called by the {@link IFarmHousing}
+	 * which handles resources.
+	 * 
+	 * @param germling
+	 * @param world
+	 * @param x
+	 * @param y
+	 * @param z
+	 * @return true on success, false otherwise.
+	 */
+	boolean plantSaplingAt(ItemStack germling, World world, int x, int y, int z);
+
+}