implemented biome dependent tree generation

init.lua

@@ -63,7 +63,7 @@ local REALM_FINISH = REALM_START+HEIGHT_VARIANCE
 -- debug stuff
 local DEBUG_FLAGS = { debug_blocks=false, overwrite_seed = true, cherrypicked_spawn = false, cherrypick_biome=true, give_privs=true }
 local DEBUG_FREQUENCY = 5
-local DESIRED_BIOME = "bluelands"
+local DESIRED_BIOME = "cyanlands"
 local debug_data = {
 	mapblock_count = 0,
 	timeAccumulator_total = 0,
@@ -78,24 +78,19 @@ local schematics_path = minetest.get_modpath("ether_lands").."/schematics/"
 
 ether_lands.schematics = {
 	path = minetest.get_modpath("ether_lands").."/schematics/",
-	cyanlands_tree1 = schematics_path.."cyanlands_tree1.mts",
-	cyanlands_tree2 = schematics_path.."cyanlands_tree2.mts",
-	cyanlands_tree3 = schematics_path.."cyanlands_tree3.mts",
+	cyanlands = {
+		tree1 = schematics_path.."cyanlands_tree1.mts",
+		tree2 = schematics_path.."cyanlands_tree2.mts",
+		tree3 = schematics_path.."cyanlands_tree3.mts",
+	},
+	orangelands = {
+		tree1 = schematics_path.."orangelands_tree1.mts",
+	},
+	bluelands = {
+		tree1 = schematics_path.."bluelands_tree1.mts",
+	},
 }
 
-minetest.register_chatcommand("testschem", {
-	func = function( name, param )
-		minetest.place_schematic(
-			minetest.string_to_pos(param),
-			ether_lands.schematics.cyanlands_tree1,
-			"random",
-			nil,
-			true,
-			"place_center_x,place_center_z"
-		)
-	end
-	
-})
 -- noise parameters -----------------------------------------------------------
 
 ether_lands.heightmap_parameters = {
@@ -162,7 +157,7 @@ local mapchunk_length -- assumes mapchunks and emerged vmanips are always cubes
 local emerged_length
 
 minetest.register_on_mapgen_init( function(mapgen_params)
-	if( DEBUG_FLAGS.overwrite_seed ) then minetest.set_mapgen_setting("seed", 10200000, true) end
+	if( DEBUG_FLAGS.overwrite_seed ) then minetest.set_mapgen_setting("seed", 10300000, true) end
 	mapchunk_length = minetest.get_mapgen_setting("chunksize")*16 --TODO 16 should not be hard coded
 	emerged_length = mapchunk_length+(16*2) --TODO figure out if emerged areas is always 1 mapblock bigger in all directions
 	
@@ -195,32 +190,38 @@ function( cid_data, generate_VoxelArea, buffer_VoxelArea )
 	local node_index_in_mapchunk
 	local node_2d_index = 1
 
-	local grass_id = cid_grass_cyan
+	
 	for z = zmin, zmax do
 		for y = ymin, ymax do
 			for x = xmin, xmax do
+				local base_height = heightmap_values[node_2d_index] --TODO cache this for every x,z only
+				base_height = (base_height+1)/2
+				base_height = base_height * HEIGHT_VARIANCE
+				local grass_id
+				local trees_schematics
+				if ( base_height > ORANGELANDS_BIOME_HEIGHT ) then
+					grass_id = cid_grass_cyan
+					trees_schematics = ether_lands.schematics.cyanlands
+				end
+				if( base_height > BLUELANDS_BIOME_HEIGHT ) then
+					grass_id = cid_grass_blue
+					trees_schematics = ether_lands.schematics.bluelands
+				end
+				if( base_height < ORANGELANDS_BIOME_HEIGHT ) then
+					grass_id = cid_grass_orange
+					trees_schematics = ether_lands.schematics.orangelands
+				end
 				local node_index_in_emerged = buffer_VoxelArea:index(x,y,z)
 				if( cid_data[node_index_in_emerged] == grass_id ) then
 					if( math.random() < TREE_FREQUENCY ) then
-							if( math.random() < TREE3_FREQUENCY ) then
-								minetest.place_schematic(
-									{x=x, y=y, z=z},
-									ether_lands.schematics.cyanlands_tree3,
-									"random",
-									nil,
-									true,
-									"place_center_x,place_center_z"
-								)
-							else
-								minetest.place_schematic(
-									{x=x, y=y, z=z},
-									ether_lands.schematics.cyanlands_tree2,
-									"random",
-									nil,
-									true,
-									"place_center_x,place_center_z"
-								)
-							end
+						minetest.place_schematic(
+							{x=x, y=y, z=z},
+							trees_schematics.tree1,
+							"random",
+							nil,
+							true,
+							"place_center_x,place_center_z"
+						)
 					end
 				end
 			end