tsm_chests: Fix floating chests; remove extra bloat (#492)

.luacheckrc

@@ -15,7 +15,7 @@ globals = {
 	"crafting", "vector", "table", "minetest", "worldedit", "ctf", "ctf_flag",
 	"ctf_colors", "hudkit", "default", "treasurer", "ChatCmdBuilder", "ctf_map",
 	"ctf_match", "ctf_stats", "ctf_treasure", "ctf_playertag", "chatplus", "irc",
-	"armor", "vote", "give_initial_stuff", "hud_score", "physics"
+	"armor", "vote", "give_initial_stuff", "hud_score", "physics", "tsm_chests"
 }
 
 read_globals = {

mods/ctf/ctf_map/ctf_map_core/schem_map.lua

@@ -260,12 +260,11 @@ local function place_map(map)
 			ctf_map.place_base(value.color, value.pos)
 		end
 
-		local seed = minetest.get_mapgen_setting("seed")
 		for _, chestzone in pairs(ctf_map.map.chests) do
 			minetest.log("verbose", "Placing " .. chestzone.n .. " chests from " ..
 					minetest.pos_to_string(chestzone.from) .. " to "..
 					minetest.pos_to_string(chestzone.to))
-			place_chests(chestzone.from, chestzone.to, seed, chestzone.n)
+			tsm_chests.place_chests(chestzone.from, chestzone.to, chestzone.n)
 		end
 
 		minetest.after(2, function()

mods/other/tsm_chests/init.lua

@@ -15,6 +15,7 @@
 	For this, there is another example mod, called “trm_default_example”, which registers a bunch of items of the default mod, like default:gold_ingot.
 ]]
 
+tsm_chests = {}
 
 local chest_formspec =
 	"size[8,9]" ..
@@ -78,12 +79,8 @@ minetest.register_node("tsm_chests:chest", {
 
 --[[ here are some configuration variables ]]
 
-local h_min = -65  		-- minimum chest spawning height, relative to water_level
-local h_max = 40		-- maximum chest spawning height, relative to water_level
 local t_min = 4  -- minimum amount of treasures found in a chest
 local t_max = 7  -- maximum amount of treasures found in a chest
-
-local water_level = tonumber(minetest.settings:get("water_level"))
 local get_node = minetest.get_node
 
 local function findGroundLevel(pos, y_min, y_max)
@@ -170,19 +167,7 @@ end
 --[[ here comes the generation code
 	the interesting part which involes treasurer comes way below
 ]]
-function place_chests(minp, maxp, seed, number_chests)
+function tsm_chests.place_chests(minp, maxp, number_chests)
-	minp = {x=minp.x, y=minp.y, z=minp.z}
-	maxp = {x=maxp.x, y=maxp.y, z=maxp.z}
-
-	-- chests minimum and maximum spawn height
-	local height_min = water_level + h_min
-	local height_max = water_level + h_max
-
-	if(maxp.y < height_min or minp.y > height_max) then
-		return
-	end
-	local y_min = math.max(minp.y, height_min)
-	local y_max = math.min(maxp.y, height_max)
 	local attempts = 0
 	local chests_placed = 0
 	while chests_placed < number_chests and attempts < number_chests + 12 do
@@ -194,15 +179,10 @@ function place_chests(minp, maxp, seed, number_chests)
 		}
 
 		-- Find ground level
-		local ground = findGroundLevel(pos, y_min, y_max)
+		local ground = findGroundLevel(pos, minp.y, maxp.y)
 		if ground ~= nil then
 			local chest_pos = {x = pos.x, y = ground + 1, z = pos.z}
 
-			-- Don't spawn at barrier
-			if chest_pos.z == 0 then
-				chest_pos.z = -1
-			end
-
 			-- chest node name (before it becomes a chest)
 			local nn = minetest.get_node(chest_pos).name
 			if nn == "air" or nn == "default:water_source" then