444 lines
10 KiB
Lua
444 lines
10 KiB
Lua
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-- Minetest: builtin/item.lua (override falling entity with new features)
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-- override falling nodes to add damage
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local function add_fall_damage(node, damage)
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if core.registered_nodes[node] then
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local group = core.registered_nodes[node].groups
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group.falling_node_damage = damage
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core.override_item(node, {groups = group})
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else
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print (node .. " not found to add falling_node_damage to")
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end
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end
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add_fall_damage("default:sand", 2)
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add_fall_damage("default:desert_sand", 2)
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add_fall_damage("default:silver_sand", 2)
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add_fall_damage("default:gravel", 3)
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add_fall_damage("caverealms:coal_dust", 3)
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add_fall_damage("tnt:tnt_burning", 4)
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--
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-- Falling stuff
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--
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local node_fall_hurt = core.settings:get_bool("node_fall_hurt") ~= false
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local delay = 0.1 -- used to simulate lag
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local gravity = core.settings:get("movement_gravity") or 9.81
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local function fall_hurt_check(self, pos)
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if self.hurt_toggle then
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-- Get damage level from falling_node_damage group
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local damage = core.registered_nodes[self.node.name] and
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core.registered_nodes[self.node.name].groups.falling_node_damage
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if damage then
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local all_objects = minetest.get_objects_inside_radius(pos, 0.8)
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for _,obj in ipairs(all_objects) do
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local name = obj:get_luaentity() and
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obj:get_luaentity().name
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if (name
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and name ~= "__builtin:item"
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and name ~= "__builtin:falling_node")
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or obj:is_player() then
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obj:punch(self.object, 4.0, {
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damage_groups = {fleshy = damage}
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}, nil)
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self.hurt_toggle = false
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end
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end
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end
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else
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self.hurt_toggle = true
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end
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end
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core.register_entity(":__builtin:falling_node", {
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initial_properties = {
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visual = "wielditem",
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visual_size = {x = 0.667, y = 0.667},
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textures = {},
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physical = true,
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is_visible = false,
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collide_with_objects = false,
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collisionbox = {-0.5, -0.5, -0.5, 0.5, 0.5, 0.5},
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},
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set_node = function(self, node, meta)
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self.node = node
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meta = meta or {}
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self.hurt_toggle = true
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if type(meta.to_table) == "function" then
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meta = meta:to_table()
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end
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for _, list in pairs(meta.inventory or {}) do
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for i, stack in pairs(list) do
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if type(stack) == "userdata" then
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list[i] = stack:to_string()
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end
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end
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end
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local def = core.registered_nodes[node.name]
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if not def then
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-- Don't allow unknown nodes to fall
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core.log("warning", "Unknown falling node removed at "..
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core.pos_to_string(self.object:get_pos()))
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self.object:remove()
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return
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end
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self.meta = meta
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if def.drawtype == "airlike" then
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self.object:set_properties({
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is_visible = false,
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})
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elseif def.drawtype == "torchlike" or def.drawtype == "signlike" then
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local textures
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if def.tiles and def.tiles[1] then
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if def.drawtype == "torchlike" then
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textures = {
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"(" .. def.tiles[1] .. ")^[transformFX", def.tiles[1]}
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else
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textures = { def.tiles[1] }
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end
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end
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self.object:set_properties({
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is_visible = true,
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visual = "upright_sprite",
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visual_size = {x = 1, y = 1},
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textures = textures,
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glow = def.light_source,
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})
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else
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local itemstring = node.name
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if core.is_colored_paramtype(def.paramtype2) then
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itemstring = core.itemstring_with_palette(
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itemstring, node.param2)
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end
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self.object:set_properties({
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is_visible = true,
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wield_item = itemstring,
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glow = def.light_source,
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})
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end
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-- Rotate entity
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if def.drawtype == "torchlike" then
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self.object:set_yaw(math.pi * 0.25)
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elseif (node.param2 ~= 0 and (def.wield_image == ""
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or def.wield_image == nil))
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or def.drawtype == "signlike" then
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if (def.paramtype2 == "facedir"
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or def.paramtype2 == "colorfacedir") then
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local fdir = (node.param2 or 1) % 32
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local face = fdir % 4
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local axis = fdir - face
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local pitch, yaw, roll
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if axis == 4 then
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pitch = (4 - face) * (math.pi / 2) - math.pi / 2
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yaw = math.pi / 2
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roll = math.pi / 2
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elseif axis == 8 then
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pitch = (4 - face) * (math.pi / 2) - math.pi * 1.5
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yaw = math.pi * 1.5
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roll = math.pi / 2
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elseif axis == 12 then
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pitch = (4 - face) * (math.pi / 2)
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yaw = 0
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roll = math.pi / 2
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elseif axis == 16 then
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pitch = (4 - face) * (math.pi / 2) + math.pi
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yaw = math.pi
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roll = math.pi / 2
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elseif axis == 20 then
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pitch = math.pi
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yaw = face * (math.pi / 2) + math.pi
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roll = 0
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else
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pitch = 0
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yaw = (4 - face) * (math.pi / 2)
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roll = 0
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end
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self.object:set_rotation({x = pitch, y = yaw, z = roll})
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elseif (def.paramtype2 == "wallmounted"
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or def.paramtype2 == "colorwallmounted") then
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local rot = (node.param2 or 1) % 8
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local pitch, yaw, roll = 0, 0, 0
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if rot == 1 then
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pitch, yaw = -math.pi, -math.pi
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elseif rot == 2 then
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pitch, yaw = math.pi / 2, math.pi / 2
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elseif rot == 3 then
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pitch, yaw = math.pi / 2, math.pi * 1.5
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elseif rot == 4 then
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pitch, yaw = math.pi / 2, math.pi
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elseif rot == 5 then
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pitch, yaw = math.pi / 2, 0
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end
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if def.drawtype == "signlike" then
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pitch = pitch - math.pi / 2
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if rot >= 0 and rot <= 1 then
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roll = roll - math.pi / 2
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end
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end
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self.object:set_rotation({x = pitch, y = yaw, z = roll})
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end
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end
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end,
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get_staticdata = function(self)
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return core.serialize({
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node = self.node,
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meta = self.meta
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})
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end,
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on_activate = function(self, staticdata)
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self.object:set_armor_groups({immortal = 1})
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self.object:set_acceleration({x = 0, y = -gravity, z = 0})
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local ds = core.deserialize(staticdata)
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if ds and ds.node then
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self:set_node(ds.node, ds.meta)
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elseif ds then
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self:set_node(ds)
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elseif staticdata ~= "" then
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self:set_node({name = staticdata})
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end
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end,
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-- incase falling entity is stuck, punching drops as item to recover
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on_punch = function(self, puncher, tflp, tool_caps, dir, damage)
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if puncher and puncher:is_player() then
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local drops = core.get_node_drops(self.node, "")
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for _, dropped_item in pairs(drops) do
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core.add_item(self.object:get_pos(), dropped_item)
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end
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self.object:remove()
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end
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end,
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on_step = function(self, dtime)
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-- used to simulate a little lag
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self.timer = (self.timer or 0) + dtime
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if self.timer < delay then
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return
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end
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self.timer = 0
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-- Set gravity and horizontal slowing
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self.object:set_acceleration({x = 0, y = -gravity, z = 0})
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local vel = self.object:get_velocity()
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vel.x = vel.x * 0.95
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vel.z = vel.z * 0.95
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if vel.x < 0.1 and vel.z < 0.1 then
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vel.x = 0
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vel.z = 0
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end
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self.object:set_velocity(vel)
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local pos = self.object:get_pos()
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-- Position of bottom center point
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local below_pos = {x = pos.x, y = pos.y - 0.7, z = pos.z}
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-- Check for player/mobs below falling node and hurt them >:D
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if node_fall_hurt then
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fall_hurt_check(self, below_pos)
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end
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-- check if falling node has custom function set
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local custom = core.registered_items[self.node.name]
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and core.registered_items[self.node.name].falling_step
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if custom and custom(self, pos, dtime + delay) == false then
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return -- skip further checks if false
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end
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-- Avoid bugs caused by an unloaded node below
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local below_node = core.get_node_or_nil(below_pos)
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-- Delete on contact with ignore at world edges or return if unloaded
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if not below_node then
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return
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elseif below_node.name == "ignore" then
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self.object:remove()
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return
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end
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local below_nodef = core.registered_nodes[below_node.name]
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-- Is it a level node we can add to?
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if below_nodef and below_nodef.leveled and
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below_node.name == self.node.name then
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local addlevel = self.node.level
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if not addlevel or addlevel <= 0 then
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addlevel = below_nodef.leveled
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end
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if core.add_node_level(below_pos, addlevel) == 0 then
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self.object:remove()
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return
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end
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end
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-- Stop node if it falls on walkable surface, or floats on water
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if (below_nodef and below_nodef.walkable == true)
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or (below_nodef
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and core.get_item_group(self.node.name, "float") ~= 0
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and below_nodef.liquidtype ~= "none") then
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self.object:set_velocity({x = 0, y = 0, z = 0})
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end
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-- Has the fallen node stopped moving ?
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if vector.equals(vel, {x = 0, y = 0, z = 0}) then
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local npos = self.object:get_pos() if not npos then return end
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-- Get node we've landed inside
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local cnode = minetest.get_node(npos)
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local cdef = core.registered_nodes[cnode.name]
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-- If air_equivalent or buildable_to or an attached_node then place
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-- node, otherwise drop falling node as an item instead.
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if (cdef and cdef.air_equivalent == true)
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or (cdef and cdef.buildable_to == true)
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or (cdef and cdef.liquidtype ~= "none")
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or core.get_item_group(cnode.name, "attached_node") ~= 0 then
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-- Are we an attached node ? (grass, flowers, torch)
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if core.get_item_group(cnode.name, "attached_node") ~= 0 then
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-- Add drops from attached node
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local drops = core.get_node_drops(cnode.name, "")
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for _, dropped_item in pairs(drops) do
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core.add_item(npos, dropped_item)
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end
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-- Run script hook
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for _, callback in pairs(core.registered_on_dignodes) do
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callback(npos, cnode)
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end
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end
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-- Round position
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npos = vector.round(npos)
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-- Place falling entity as node and write any metadata
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core.add_node(npos, self.node)
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if self.meta then
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local meta = core.get_meta(npos)
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meta:from_table(self.meta)
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end
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-- Play placed sound
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local def = core.registered_nodes[self.node.name]
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if def.sounds and def.sounds.place and def.sounds.place.name then
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core.sound_play(def.sounds.place, {pos = npos})
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end
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-- Just incase we landed on other falling nodes
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core.check_for_falling(npos)
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else
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-- Add drops from falling node
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local drops = core.get_node_drops(self.node, "")
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for _, dropped_item in pairs(drops) do
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core.add_item(npos, dropped_item)
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end
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end
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-- Remove falling entity if it cannot be placed
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self.object:remove()
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end
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end
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})
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--[[
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core.override_item("default:gravel", {
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falling_step = function(self, pos, dtime)
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print ("Gravel falling!", dtime)
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end
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})
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]]
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