mirror of
https://github.com/minetest/minetest.git
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97 lines
3.1 KiB
Lua
97 lines
3.1 KiB
Lua
local function color(hex)
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return ("blank.png^[noalpha^[colorize:#%06X:255"):format(hex)
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end
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local function random_color()
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return color(math.random(0, 0xFFFFFF))
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end
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local function random_rotation()
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return 2 * math.pi * vector.new(math.random(), math.random(), math.random())
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end
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local active_selectionbox_entities = 0 -- count active entities
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minetest.register_entity("testentities:selectionbox", {
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initial_properties = {
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visual = "cube",
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infotext = "Punch to randomize rotation, rightclick to toggle rotation"
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},
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on_activate = function(self)
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active_selectionbox_entities = active_selectionbox_entities + 1
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local w, h, l = math.random(), math.random(), math.random()
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self.object:set_properties({
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textures = {random_color(), random_color(), random_color(), random_color(), random_color(), random_color()},
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selectionbox = {rotate = true, -w/2, -h/2, -l/2, w/2, h/2, l/2},
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visual_size = vector.new(w, h, l),
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automatic_rotate = 2 * math.pi * (math.random() - 0.5)
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})
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assert(self.object:get_properties().selectionbox.rotate)
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self.object:set_armor_groups({punch_operable = 1})
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self.object:set_rotation(random_rotation())
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end,
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on_deactivate = function()
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active_selectionbox_entities = active_selectionbox_entities - 1
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end,
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on_punch = function(self)
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self.object:set_rotation(random_rotation())
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end,
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on_rightclick = function(self)
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self.object:set_properties({
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automatic_rotate = self.object:get_properties().automatic_rotate == 0 and 2 * math.pi * (math.random() - 0.5) or 0
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})
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end
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})
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local hud_ids = {}
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minetest.register_globalstep(function()
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if active_selectionbox_entities == 0 then
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return
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end
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for _, player in pairs(minetest.get_connected_players()) do
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local offset = player:get_eye_offset()
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offset.y = offset.y + player:get_properties().eye_height
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local pos1 = vector.add(player:get_pos(), offset)
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local raycast = minetest.raycast(pos1, vector.add(pos1, vector.multiply(player:get_look_dir(), 10)), true, false)
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local pointed_thing = raycast()
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if pointed_thing.ref == player then
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pointed_thing = raycast()
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end
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local remove_hud_element = true
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local pname = player:get_player_name()
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local hud_id = hud_ids[pname]
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if pointed_thing and pointed_thing.type == "object" then
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local ent = pointed_thing.ref:get_luaentity()
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if ent and ent.name == "testentities:selectionbox" then
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hud_ids[pname] = hud_id or player:hud_add({
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hud_elem_type = "text", -- See HUD element types
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position = {x=0.5, y=0.5},
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text = "X",
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number = 0xFF0000,
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alignment = {x=0, y=0},
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})
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local shade = math.random(0, 0xFF)
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minetest.add_particle({
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-- Random shade of red for the intersection point
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texture = color(0x10000 * shade),
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pos = pointed_thing.intersection_point,
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size = 0.1
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})
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minetest.add_particle({
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-- Same shade of green for the corresponding intersection normal
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texture = color(0x100 * shade),
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pos = vector.add(pointed_thing.intersection_point, pointed_thing.intersection_normal * 0.1),
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size = 0.1
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})
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remove_hud_element = false
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end
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end
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if remove_hud_element and hud_id then
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player:hud_remove(hud_id)
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hud_ids[pname] = nil
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end
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end
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end)
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