Humidity for corn.

Adding some code to handle double sized plants easily. The
watering can now redirects water to the bottom, and the hydrometer
reads the bottom half water value instead of the top. No ABM's for
hydration happen on the top half, so no risk of double damage there.

1 files changed, 20 insertions, 0 deletions

diff --git a/init.lua b/init.lua
index e7982ed..d1c52ac 100644
--- a/init.lua
+++ b/init.lua
@@ -146,6 +146,11 @@ minetest.register_tool("crops:watering_can", {
 			itemstack:set_wear(1)
 			return itemstack
 		end
+		-- using it on a top-half part of a plant?
+		local meta = minetest.get_meta(pos)
+		if meta:get_int("crops_top_half") == 1 then
+			pos = {x = pos.x, y = pos.y - 1, z = pos.z}
+		end
 		-- using it on a plant?
 		local meta = minetest.get_meta(pos)
 		local water = meta:get_int("crops_water")
@@ -159,6 +164,7 @@ minetest.register_tool("crops:watering_can", {
 		end
 		water = math.min(water + crops.watercan, crops.watercan_max)
 		meta:set_int("crops_water", water)
+
 		itemstack:set_wear(math.min(65534, wear + (65535 / crops.watercanuses)))
 		return itemstack
 	end,
@@ -177,6 +183,12 @@ minetest.register_tool("crops:hydrometer", {
 		if pos == nil then
 			return itemstack
 		end
+		-- doublesize plant?
+		local meta = minetest.get_meta(pos)
+		if meta:get_int("crops_top_half") == 1 then
+			pos = {x = pos.x, y = pos.y - 1, z = pos.z}
+		end
+
 		local meta = minetest.get_meta(pos)
 		-- using it on a plant?
 		local water = meta:get_int("crops_water")
@@ -254,6 +266,14 @@ minetest.register_abm({
 		-- dry out the plant
 		water = math.max(0, water - plant.properties.wateruse )
 		meta:set_int("crops_water", water)
+
+		-- for convenience, copy water attribute to top half
+		if not plant.properties.doublesize == nil and plant.properties.doublesize then
+			local above = { x = pos.x, y = pos.y + 1, z = pos.z}
+			local meta = minetest.get_meta(above)
+			meta:set_int("crops_water", water)
+		end
+
 		if water < plant.properties.wither_damage then
 			crops.particles(pos, 0)
 			damage = damage + math.random(0,5)