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90 lines
3.2 KiB
90 lines
3.2 KiB
1 year ago
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local minetest, vector, math_rad, math_random
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= minetest, vector, math.rad, math.random
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local get_node_active_selection_box = nc_extended_rotating.utility.get_node_active_selection_box;
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local TAU = math.pi * 2
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local MOD_NAME = minetest.get_current_modname()
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local ARROWS_FACE = MOD_NAME .. ":arrows_face"
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local ARROWS_EDGE = MOD_NAME .. ":arrows_edge"
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local ARROWS_CORNER = MOD_NAME .. ":arrows_corner"
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local entities_per_player = {}
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local function register_entity(name, mesh, rot_speed)
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minetest.register_entity(name, {
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initial_properties = {
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visual = "mesh",
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mesh = mesh,
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textures = { "nc_extended_rotating_arrows.png^[opacity:192" },
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use_texture_alpha = true,
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pointable = false, -- Can't be interacted with.
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static_save = false, -- Doesn't get saved.
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automatic_rotate = math_rad(rot_speed), -- Rotation in degrees per second.
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},
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on_deactivate = function(self, removal)
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if not self.player_name then return end
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entities_per_player[self.player_name] = nil
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end,
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})
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end
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register_entity(ARROWS_FACE , "nc_extended_rotating_face.obj" , 120)
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register_entity(ARROWS_EDGE , "nc_extended_rotating_edge.obj" , 60)
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register_entity(ARROWS_CORNER, "nc_extended_rotating_corner.obj", 120)
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minetest.register_on_leaveplayer(function(player, timed_out)
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local name = player:get_player_name()
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local arrows = entities_per_player[name]
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if arrows then arrows.object:remove() end
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end)
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local entity = {}
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function entity.update_entity_hint(player, state)
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local name = player:get_player_name()
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local arrows = entities_per_player[name]
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if state then
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if arrows then
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if state.pos == arrows.prev_pos and state.axis == arrows.prev_axis and state.invert == arrows.prev_invert then
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-- No changes were made, so skip creating a new entity.
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return
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else
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-- Changes were made, delete the old entity.
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-- We do this to avoid rotation interpolation from `set_rotation`.
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arrows.object:remove()
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arrows = nil
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end
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end
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local ent, off
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if state.mode == "face" then ent, off = ARROWS_FACE , state.axis / 1.85
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elseif state.mode == "edge" then ent, off = ARROWS_EDGE , vector.new(0, 0, 0)
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elseif state.mode == "corner" then ent, off = ARROWS_CORNER, state.axis / 2.65
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end
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local box = get_node_active_selection_box(state.node)
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local max = box.max - box.min
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local pos = state.pos + off:multiply(max)
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local rot = vector.dir_to_rotation(state.axis)
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rot.x = rot.x + (state.invert and -TAU/4 or TAU/4)
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arrows = minetest.add_entity(pos, ent):get_luaentity()
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arrows.object:set_properties({ visual_size = max })
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arrows.object:set_rotation(rot)
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arrows.player_name = name
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arrows.prev_pos = state.pos
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arrows.prev_axis = state.axis
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arrows.prev_invert = state.invert
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entities_per_player[name] = arrows
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elseif arrows then
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arrows.object:remove()
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end
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end
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return entity
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