local S = minetest.get_translator("eterrain")

---------------------------------------------------
-- eterrain:rock (rock, stone, mapgen_stone)
minetest.register_node("eterrain:rock", {
  description = S("Barren rock"),
  tiles={"eterrain_rock.png"},
  groups={solid=1, rock=1, crumbly=2}
})
minetest.register_alias("mapgen_stone", "eterrain:rock")
minetest.register_alias("rock", "eterrain:rock")
minetest.register_alias("stone", "eterrain:rock")


---------------------------------------------------
-- eterrain:soil (mapgen_soil, soil)
minetest.register_node("eterrain:soil", {
  description = S("Topsoil"),
  tiles={{name="eterrain_soil.png", align_style="world", scale=16}},
  groups={dirt=1, fertile=2, crumbly=3}
})
minetest.register_alias("mapgen_soil", "eterrain:soil")
minetest.register_alias("soil", "eterrain:soil")

---------------------------------------------------
-- topsoil
minetest.register_node("eterrain:topsoil", {
  description = S("Topsoil"),
  tiles={
    {
      name="eterrain_topsoil_top.png",
      align_style="world",
      scale=16
    },
    "eterrain_soil.png",
    {
      name="eterrain_topsoil_side.png",
      align_style="world",
      scale=16
    }
  },
  groups={dirt=1, fertile=2, crumbly=3}
})
minetest.register_alias("dirt_with_grass", "eterrain:topsoil")
minetest.register_alias("topsoil", "eterrain:topsoil")
minetest.register_alias("topsoil_with_grass", "eterrain:topsoil")
minetest.register_alias("mapgen_topsoil", "eterrain:topsoil")

---------------------------------------------------
-- ocean water
minetest.register_node("eterrain:water_ocean", {
  description = S("Water"),
  paramtype = "light",
  tiles = {
    {
      name = "eterrain_water_animated.png",
      backface_culling = false,
      animation = {
        type = "vertical_frames",
        aspect_w = 16,
        aspect_h = 16,
        length = 2.0,
      }
    },
    {
      name = "eterrain_water.png",
      backface_culling = true,
      animation = {
        type = "vertical_frames",
        aspect_w = 16,
        aspect_h = 16,
        length = 2.0,
      }
    }
  },
  groups = { liquid=3, water=3 },
  drawtype = "liquid",
  liquidtype = "source",
  walkable = false,
  pointable = false,
  diggable = false,
  is_ground_content = false,
  buildable_to = true,
  use_texture_alpha = "blend",
  drowning = 1,
  drop = "",
  liquid_alternative_flowing = "eterrain:water_ocean_stream",
  liquid_alternative_source = "eterrain:water_ocean",
  post_effect_color = {a = 250, r = 3, g = 6, b = 17},
  liquid_viscosity = 2,
  move_resistance = 2,
  liquid_move_physics = true,
  waving = 3
})
minetest.register_alias("mapgen_water_source", "eterrain:water_ocean")
minetest.register_alias("water", "eterrain:water_ocean")

---------------------------------------------------
-- ocean water stream
minetest.register_node("eterrain:water_ocean_stream", {
  description = S("Flowing water"),
  paramtype = "light",
  tiles = {"eterrain_water.png"},
  special_tiles = {
    {
      name = "eterrain_water_animated.png",
      backface_culling = false,
      animation = {
        type = "vertical_frames",
        aspect_w = 16,
        aspect_h = 16,
        length = 2.0,
      }
    },
    {
      name = "eterrain_water.png",
      backface_culling = true,
      animation = {
        type = "vertical_frames",
        aspect_w = 16,
        aspect_h = 16,
        length = 2.0,
      }
    }
  },
  groups = { liquid=3, water=3 },
  drawtype = "flowingliquid",
  paramtype2 = "flowingliquid",
  liquidtype = "flowing",
  walkable = false,
  pointable = false,
  diggable = false,
  is_ground_content = false,
  buildable_to = true,
  use_texture_alpha = "blend",
  drowning = 1,
  drop = "",
  liquid_alternative_flowing = "eterrain:water_ocean_stream",
  liquid_alternative_source = "eterrain:water_ocean",
  post_effect_color = {a = 110, r = 3, g = 6, b = 17},
  liquid_viscosity = 2,
  move_resistance = 2,
  liquid_move_physics = false,
  waving = 3
})
minetest.register_alias("mapgen_water_source_stream", "eterrain:water_ocean")
minetest.register_alias("ocean", "eterrain:water_ocean")



---------------------------------------------------
-- TODO:river water
minetest.register_alias("mapgen_river_water_source", "eterrain:water_ocean_stream")
-- TODO:river water stream
minetest.register_alias("mapgen_river_water_stream", "eterrain:water_ocean_stream")
-- TODO:saltwater
-- TODO:saltwater
-- TODO: create river water and change mapgen