From 2321f5ba6cd62f2f9cd838d5a4d16548f0e109d0 Mon Sep 17 00:00:00 2001
From: the lemons <citrons@mondecitronne.com>
Date: Tue, 15 Feb 2022 22:35:12 -0600
Subject: add desert and plains biomes

---
 mods/vzxv/nodes.lua          |  4 +--
 mods/vzxv/tools.lua          |  7 +++--
 mods/vzxv_worldgen/biome.lua | 74 ++++++++++++++++++++++++++++++++++++++------
 3 files changed, 71 insertions(+), 14 deletions(-)

diff --git a/mods/vzxv/nodes.lua b/mods/vzxv/nodes.lua
index b342032..b10acd2 100644
--- a/mods/vzxv/nodes.lua
+++ b/mods/vzxv/nodes.lua
@@ -1,6 +1,6 @@
 
 vzxv.mundane_block("vzxv:stone", "Stone", nil,
-	{ groups = { cracky = 2, stone = 1 } }
+	{ groups = { cracky = 3, stone = 1 } }
 )
 
 vzxv.mundane_block("vzxv:cobblestone", "Cobblestone", nil,
@@ -34,7 +34,7 @@ vzxv.mundane_block("vzxv:sedimentary", "Stone",
 		"vzxvstone.png","vzxvsedimentary_bottom.png","vzxvsedimentary.png",
 		"vzxvsedimentary.png",
 	},
-	{ groups = { cracky = 1, stone = 1 } }
+	{ groups = { cracky = 2, stone = 1 } }
 )
 
 minetest.register_craftitem("vzxv:stoneplate", {
diff --git a/mods/vzxv/tools.lua b/mods/vzxv/tools.lua
index 26307ec..020aa47 100644
--- a/mods/vzxv/tools.lua
+++ b/mods/vzxv/tools.lua
@@ -51,7 +51,7 @@ stonepick.groups.pick = 2
 minetest.register_item("vzxv:stonepick",stonepick)
 
 local metalpick = deepclone(base_tool)
-metalpick.tool_capabilities.groupcaps = {cracky = {times = {0.25,0.5,1,4}}}
+metalpick.tool_capabilities.groupcaps = {cracky = {times = {0.25,0.5,0.75,4}}}
 metalpick.inventory_image = "vzxvmetalpick.png"
 metalpick.description = "Metal pick"
 metalpick.groups.pick = 3
@@ -67,7 +67,8 @@ minetest.register_item("vzxv:woodaxe",woodaxe)
 
 local woodadze = deepclone(base_tool)
 woodadze.tool_capabilities.groupcaps = {
-	choppy = {times = {4,16}}, crumbly = {times ={1.5, 3}}
+	choppy = {times = {4,16}}, crumbly = {times ={1.5, 3}},
+	cracky = {times = {3,5,60}},
 }
 woodadze.inventory_image = "vzxvwoodadze.png"
 woodadze.description = "Adze"
@@ -89,4 +90,4 @@ metalaxe.tool_capabilities.groupcaps = {choppy = {times = {0.25,0.5}}}
 metalaxe.inventory_image = "vzxvmetalaxe.png"
 metalaxe.description = "Metal axe"
 metalaxe.groups.axe = 3
-minetest.register_item("vzxv:metalaxe",metalaxe)
\ No newline at end of file
+minetest.register_item("vzxv:metalaxe",metalaxe)
diff --git a/mods/vzxv_worldgen/biome.lua b/mods/vzxv_worldgen/biome.lua
index 69f7533..fe573bf 100644
--- a/mods/vzxv_worldgen/biome.lua
+++ b/mods/vzxv_worldgen/biome.lua
@@ -13,15 +13,24 @@ end
 
 local noise_params = {
 	elevation = {
-		seed = 1,
-		offset = -50,
-		scale = 50,
-		spread = {x=2500,y=2500,z=500},
+		seed = 0xA410,
+		offset = -175,
+		scale = 100,
+		spread = {x=3500,y=3500,z=500},
 		octaves = 5,
 		persistence = 0.8,
 		lacunarity = 2.0,
 		flags = "defaults, absvalue",
 	},
+	temperature = {
+		seed = 0xBEE,
+		offset = 30,
+		scale = 13,
+		spread = {x=5000,y=5000,z=500},
+		octaves = 3,
+		persistence = 0.3,
+		lacunarity = 0.5,
+	},
 }
 
 function vzxv.biome_generator:noisemap(mapname, pos)
@@ -55,11 +64,20 @@ function vzxv.biome_generator:noisemap_3d(mapname, pos)
 	return map[z][y][x]
 end
 
-local water_level = 14
+local water_level = -45
+
+function vzxv.biome_generator:humidity(pos)
+	local height = self:noisemap("elevation", pos)
+	local temperature = self:noisemap("temperature", pos)
+	local humidity = 1 - math.min((height - water_level) / 86, 1)
+	humidity = humidity / (math.min(temperature / 25, 1))
+	return humidity
+end
 
+local bee = 0
 function vzxv.biome_generator:get_biome(pos)
 	-- TODO: underground biomes
-	if pos.y < -75 then
+	if pos.y < -175 then
 		return "underground"
 	-- TODO: sky biomes
 	elseif pos.y > 120 then
@@ -68,8 +86,19 @@ function vzxv.biome_generator:get_biome(pos)
 		if self:noisemap("elevation", pos) <= water_level + 2 then
 			return "sea"
 		else
-			-- TODO: surface biomes
-			return "surface"
+			local temp = self:noisemap("temperature", pos)
+			local humidity = self:humidity(pos)
+			bee = bee + 1
+			if bee % (16 * 16) == 0 then
+				print(temp, humidity)
+			end
+			if temp > 35 then
+				return "desert"
+			end
+			if humidity < 0.5 then
+				return "plains"
+			end
+			return "forest"
 		end
 	end
 end
@@ -78,7 +107,7 @@ local id = minetest.get_content_id
 
 local biomes = {}
 
-function biomes.surface(pos, gen)
+function biomes.forest(pos, gen)
 	local height = gen:noisemap("elevation", pos)
 	if pos.y > height then
 		return
@@ -106,6 +135,21 @@ function biomes.surface(pos, gen)
 	end
 end
 
+function biomes.plains(pos, gen)
+	local height = gen:noisemap("elevation", pos)
+	if pos.y > height then
+		return
+	elseif pos.y == math.floor(height) then
+		return id "vzxv:grass"
+	elseif pos.y > height - 3 then
+		return id "vzxv:dirt"
+	elseif pos.y > height - 5 and math.random(2) == 1 then
+		return id "vzxv:dirt"
+	else
+		return id "vzxv:stone"
+	end
+end
+
 function biomes.sea(pos, gen)
 	local height = gen:noisemap("elevation", pos)
 	if pos.y > height then
@@ -125,6 +169,18 @@ function biomes.sea(pos, gen)
 	end
 end
 
+function biomes.desert(pos, gen)
+	local height = gen:noisemap("elevation", pos)
+	if pos.y > height then
+		return
+	elseif pos.y > height - 4 then
+		return id "vzxv:sand"
+	else
+		-- sandstone?
+		return id "vzxv:stone"
+	end
+end
+
 function biomes.underground(pos)
 	return id "vzxv:stone"
 end
-- 
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