diff options
Diffstat (limited to 'display_lib/init.lua')
| -rw-r--r-- | display_lib/init.lua | 229 |
1 files changed, 0 insertions, 229 deletions
diff --git a/display_lib/init.lua b/display_lib/init.lua deleted file mode 100644 index 210aac9..0000000 --- a/display_lib/init.lua +++ /dev/null @@ -1,229 +0,0 @@ ---[[ - display_lib mod for Minetest - Library to add dynamic display - capabilities to nodes - (c) Pierre-Yves Rollo - - This program is free software: you can redistribute it and/or modify - it under the terms of the GNU General Public License as published by - the Free Software Foundation, either version 3 of the License, or - (at your option) any later version. - - This program is distributed in the hope that it will be useful, - but WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - GNU General Public License for more details. - - You should have received a copy of the GNU General Public License - along with this program. If not, see <http://www.gnu.org/licenses/>. ---]] - -display_lib = {} - --- Miscelaneous values depending on wallmounted param2 -local wallmounted_values = { - [0]={dx=0, dz=0, rx=0, rz=0, yaw=0, rotate=0}, -- Should never be used - {dx=0, dz=0, rx=0, rz=0, yaw=0, rotate=1}, -- Should never be used - {dx=-1, dz=0, rx=0, rz=-1, yaw=-math.pi/2, rotate=5}, - {dx=1, dz=0, rx=0, rz=1, yaw=math.pi/2, rotate=4}, - {dx=0, dz=-1, rx=1, rz=0, yaw=0, rotate=2}, - {dx=0, dz=1, rx=-1, rz=0, yaw=math.pi, rotate=3} -} - --- Miscelaneous values depending on facedir param2 -local facedir_values = { - [0]={dx=0, dz=-1, rx=1, rz=0, yaw=0, rotate=1}, - {dx=-1, dz=0, rx=0, rz=-1, yaw=-math.pi/2, rotate=2}, - {dx=0, dz=1, rx=-1, rz=0, yaw=math.pi, rotate=3}, - {dx=1, dz=0, rx=0, rz=1, yaw=math.pi/2, rotate=0}, - -- Forbiden values : - {dx=0, dz=0, rx=0, rz=0, yaw=0, rotate=0}, - {dx=0, dz=0, rx=0, rz=0, yaw=0, rotate=0}, - {dx=0, dz=0, rx=0, rz=0, yaw=0, rotate=0}, - {dx=0, dz=0, rx=0, rz=0, yaw=0, rotate=0}, - {dx=0, dz=0, rx=0, rz=0, yaw=0, rotate=0}, - {dx=0, dz=0, rx=0, rz=0, yaw=0, rotate=0}, - {dx=0, dz=0, rx=0, rz=0, yaw=0, rotate=0}, - {dx=0, dz=0, rx=0, rz=0, yaw=0, rotate=0}, - {dx=0, dz=0, rx=0, rz=0, yaw=0, rotate=0}, - {dx=0, dz=0, rx=0, rz=0, yaw=0, rotate=0}, - {dx=0, dz=0, rx=0, rz=0, yaw=0, rotate=0}, - {dx=0, dz=0, rx=0, rz=0, yaw=0, rotate=0}, - {dx=0, dz=0, rx=0, rz=0, yaw=0, rotate=0}, - {dx=0, dz=0, rx=0, rz=0, yaw=0, rotate=0}, - {dx=0, dz=0, rx=0, rz=0, yaw=0, rotate=0}, - {dx=0, dz=0, rx=0, rz=0, yaw=0, rotate=0}, - {dx=0, dz=0, rx=0, rz=0, yaw=0, rotate=0}, - {dx=0, dz=0, rx=0, rz=0, yaw=0, rotate=0}, - {dx=0, dz=0, rx=0, rz=0, yaw=0, rotate=0}, - {dx=0, dz=0, rx=0, rz=0, yaw=0, rotate=0}, - } - --- dx/dy = depth vector, rx/ly = right vector, yaw = yaw of entity, --- rotate = next facedir/wallmount on rotate - -local function get_values(node) - local ndef = minetest.registered_nodes[node.name] - - if ndef then - if ndef.paramtype2 == "wallmounted" then - return wallmounted_values[node.param2] - end - if ndef.paramtype2 == "facedir" then - return facedir_values[node.param2] - end - end -end - ---- Gets the display entities attached with a node. Removes extra ones -local function get_entities(pos) - local objrefs = {} - local ndef = minetest.registered_nodes[minetest.get_node(pos).name] - if ndef and ndef.display_entities then - for _, objref in ipairs(minetest.get_objects_inside_radius(pos, 0.5)) do - local entity = objref:get_luaentity() - if entity and ndef.display_entities[entity.name] then - if objrefs[entity.name] then - objref:remove() - else - objrefs[entity.name] = objref - end - end - end - end - return objrefs -end - -local function clip_pos_prop(posprop) - if posprop then - return math.max(-0.5, math.min(0.5, posprop)) - else - return 0 - end -end - ---- (Create and) place display entities according to the node orientation -local function place_entities(pos) - local node = minetest.get_node(pos) - local ndef = minetest.registered_nodes[node.name] - local values = get_values(node) - local objrefs = get_entities(pos) - - if values and ndef and ndef.display_entities then - - for entity_name, props in pairs(ndef.display_entities) do - local depth = clip_pos_prop(props.depth) - local height = clip_pos_prop(props.height) - local right = clip_pos_prop(props.right) - if not objrefs[entity_name] then - objrefs[entity_name] = minetest.add_entity(pos, entity_name) - end - - objrefs[entity_name]:setpos({ - x = pos.x - values.dx * depth + values.rx * right, - y = pos.y + height, - z = pos.z - values.dz * depth + values.rz * right}) - - objrefs[entity_name]:setyaw(values.yaw) - end - end - return objrefs -end - ---- Call on_display_update callback of a node for one of its display entities -local function call_node_on_display_update(pos, objref) - local ndef = minetest.registered_nodes[minetest.get_node(pos).name] - local entity = objref:get_luaentity() - if ndef and ndef.display_entities and entity and ndef.display_entities[entity.name] then - ndef.display_entities[entity.name].on_display_update(pos, objref) - end -end - ---- Force entity update -function display_lib.update_entities(pos) - local objrefs = place_entities(pos) - for _, objref in pairs(objrefs) do - call_node_on_display_update(pos, objref) - end -end - ---- On_activate callback for display_lib entities. Calls on_display_update callbacks ---- of corresponding node for each entity. -function display_lib.on_activate(entity, staticdata) - if entity then - entity.object:set_armor_groups({immortal=1}) - call_node_on_display_update(entity.object:getpos(), entity.object) - end -end - ---- On_place callback for display_lib items. Does nothing more than preventing item ---- from being placed on ceiling or ground -function display_lib.on_place(itemstack, placer, pointed_thing) - local ndef = itemstack:get_definition() - local above = pointed_thing.above - local under = pointed_thing.under - local dir = {x = under.x - above.x, - y = under.y - above.y, - z = under.z - above.z} - - if ndef then - if ndef.paramtype2 == "wallmounted" then - - local wdir = minetest.dir_to_wallmounted(dir) - - if wdir == 0 or wdir == 1 then - dir = placer:get_look_dir() - dir.y = 0 - wdir = minetest.dir_to_wallmounted(dir) - end - - return minetest.item_place(itemstack, placer, pointed_thing, wdir) - else - return minetest.item_place(itemstack, placer, pointed_thing, minetest.dir_to_facedir(dir)) - end - end - -end - ---- On_construct callback for display_lib items. Creates entities and update them. -function display_lib.on_construct(pos) - display_lib.update_entities(pos) -end - ---- On_destruct callback for display_lib items. Removes entities. -function display_lib.on_destruct(pos) - local objrefs = get_entities(pos) - - for _, objref in pairs(objrefs) do - objref:remove() - end -end - --- On_rotate (screwdriver) callback for display_lib items. Prevents axis rotation and reorients entities. -function display_lib.on_rotate(pos, node, user, mode, new_param2) - if mode ~= 1 then return false end - - local values = get_values(node) - - if values then - minetest.swap_node(pos, {name = node.name, param1 = node.param1, param2 = values.rotate}) - place_entities(pos) - return true - else - return false - end -end - ---- Creates display entity with some fields and the on_activate callback -function display_lib.register_display_entity(entity_name) - if not minetest.registered_entity then - minetest.register_entity(':'..entity_name, { - collisionbox = { 0, 0, 0, 0, 0, 0 }, - visual = "upright_sprite", - textures = {}, - on_activate = display_lib.on_activate, - }) - end -end - - - |