added gravel beaches and clams

mods/default/craftitems.lua

@@ -71,11 +71,18 @@ minetest.register_craftitem(
 minetest.register_craftitem(
    "default:lump_sugar",
    {
-      description = "Sugar lump",
+      description = "Sugar Lump",
       inventory_image = "default_lump_sugar.png",
       on_use = minetest.item_eat({hp = 1, sat = 10})
    })
 
+minetest.register_craftitem(
+   "default:pearl",
+   {
+      description = "Pearl",
+      inventory_image = "default_pearl.png",
+   })
+
 minetest.register_craftitem(
    "default:flint",
    {

mods/default/mapgen.lua

@@ -205,6 +205,23 @@ minetest.register_biome(
       humidity_point = 35,
    })
 
+minetest.register_biome(
+   {
+      name = "Gravel Beach",
+
+      node_top = "default:gravel",
+      node_filler = "default:sand",
+
+      depth_filler = 2,
+      depth_top = 1,
+
+      y_min = -5,
+      y_max = 1,
+
+      heat_point = 59,
+      humidity_point = 31,
+   })
+
 minetest.register_biome(
    {
       name = "Savanna Ocean",
@@ -468,7 +485,7 @@ minetest.register_decoration(
 minetest.register_decoration(
    {
       deco_type = "schematic",
-      place_on = {"default:sandstone"},
+      place_on = {"default:dry_dirt"},
       sidelen = 16,
       fill_ratio = 0.006,
       biomes = {"Wasteland"},
@@ -482,7 +499,7 @@ minetest.register_decoration(
 minetest.register_decoration(
    {
       deco_type = "schematic",
-      place_on = {"default:sandstone"},
+      place_on = {"default:dry_dirt"},
       sidelen = 16,
       fill_ratio = 0.004,
       biomes = {"Wasteland"},
@@ -493,6 +510,21 @@ minetest.register_decoration(
       rotation = "random",
    })
 
+-- Clams
+
+minetest.register_decoration(
+   {
+      deco_type = "simple",
+      place_on = {"default:sand", "default:gravel"},
+      sidelen = 16,
+      fill_ratio = 0.04,
+      biomes = {"Grassland Ocean", "Gravel Beach"},
+      decoration = {"default:clam"},
+      y_min = -32000,
+      y_max = 1,
+   })
+
+
 --
 -- Ore generation
 --

mods/default/nodes.lua

@@ -1283,18 +1283,40 @@ minetest.register_node(
 	    {-1/8, 0.25, -1/8, 1/8, 0.5, 1/8},
 	 },
       },
-      selection_box = {
+      sunlight_propagates = true,
+      walkable = false,
+      groups = {fleshy = 3, dig_immediate = 2, leafdecay = 3, leafdecay_drop = 1, attached_node = 1},
+      on_use = minetest.item_eat({hp = 2, sat = 10}),
+      sounds = default.node_sound_defaults(),
+   })
+
+minetest.register_node(
+   "default:clam",
+   {
+      description = "Clam",
+      drawtype = "nodebox",
+      tiles ={"default_clam.png"},
+      inventory_image = "default_clam_inventory.png",
+      wield_image = "default_clam_inventory.png",
+      paramtype = "light",
+      node_box = {
 	 type = "fixed",
 	 fixed = {
-	    {-0.25, -0.25, -0.25, 0.25, 0.25, 0.25},
-	    {-1/8, 0.25, -1/8, 1/8, 0.5, 1/8},
+	    {-3/16, -0.5, -3/16, 3/16, -6/16, 3/16},
 	 },
       },
       sunlight_propagates = true,
       walkable = false,
-      attached_node = true,
-      groups = {fleshy = 3, dig_immediate = 2, leafdecay = 3, leafdecay_drop = 1},
-      on_use = minetest.item_eat({hp = 2, sat = 10}),
+      drop = {
+	 max_items = 3,
+	 items = {
+	    {items = {"default:clam"}, rarity = 1},
+	    {items = {"default:pearl"}, rarity = 60},
+	    {items = {"default:pearl"}, rarity = 20},
+	 }
+      },
+      groups = {fleshy = 3, oddly_breakable_by_hand = 2, choppy = 3, attached_node = 1},
+      on_use = minetest.item_eat({hp = 4, sat = 40}),
       sounds = default.node_sound_defaults(),
    })