Add color swappers, color swapping, and color targets.

mods/artifact_base/init.lua

@@ -5,7 +5,13 @@ artifact = {
     -- This toggles a lot of things, including whether initialization takes place,
     -- whether nodes can be pointed, and whether the player is permitted to
     -- bypass certain restrictions imposed by the story.
-    debug = true
+    debug = true,
+    colors = {
+        gold = "#faf17a",
+        red = "#e94f3f",
+        green = "#6aae68",
+        blue = "#789fd8"
+    }
 }
 
 -- For brevity.

mods/artifact_characters/init.lua

@@ -41,7 +41,7 @@ function ns.apply_vix(m)
     end
 end
 
-function ns.swap_character(m)
+function ns._swap_character(m)
     if m.character == "vix" then
         artifact.sidekick.character = "vix"
         m:set_character("key")
@@ -103,6 +103,45 @@ function ns.swap_character(m)
     artifact.sidekick.save()
 end
 
+function ns.swap_character(m)
+    if m._swapping_character then return end
+    if artifact.sidekick.ref then
+        artifact.sidekick.ref._no_interact = true
+    end
+    m._swapping_character = true
+    local fade = artifact.hud_add(m, {
+        type = "image",
+        pos = {x=0.5,y=1},
+        offset = {x=0,y=0},
+        align = {x=0,y=0},
+        scale = {x=50000,y=50000},
+        opacity = 0,
+        image = "[fill:1x1:0,0:#000",
+    })
+    fade:animate {
+        opacity = {
+            value = 256,
+            duration = 0.3
+        }
+    }
+    minetest.after(0.3, function()
+        ns._swap_character(m)
+        fade:animate {
+            opacity = {
+                value = 0,
+                duration = 0.3
+            }
+        }
+        minetest.after(0.3, function()
+            m._swapping_character = nil
+            if artifact.sidekick.ref then
+                artifact.sidekick.ref._no_interact = nil
+            end
+        end)
+    end)
+    
+end
+
 
 
 include "key.lua"

mods/artifact_characters/vix.lua

@@ -6,7 +6,7 @@ minetest.register_entity(":artifact:burst", {
         textures = {"blank.png"},
         pointable = false,
         physical = true,
---        collide_with_objects = false,
+        collide_with_objects = false,
         collisionbox = {
             -0.2, -0.2, -0.2,
             0.2, 0.2, 0.2
@@ -22,7 +22,20 @@ minetest.register_entity(":artifact:burst", {
         end
     end,
     on_step = function(e, dtime, movement)
-        if movement.collides then
+        -- Minetest's collision is rather bad, but we also shouldn't collide with players,
+        -- hence we must implement our own rudimentary collision detection.
+        -- In this case, any intersection on the segment betwee our last position and our
+        -- current one should be considered a collision and result in detonation (and 
+        -- at the exact intersection point, if available).
+        local collision
+        for x in minetest.raycast(e.old_pos or e.object:get_pos(), e.object:get_pos(), true, true, {nodes = {}, objects = {playser = false}}) do
+            collision = x
+            break
+        end
+        if collision or movement.collides then
+            if collision then
+                e.object:set_pos(collision.intersection_point)
+            end
             minetest.add_particlespawner {
                 pos = e.object:get_pos(),
                 radius = 0.1,
@@ -49,14 +62,16 @@ minetest.register_entity(":artifact:burst", {
                 time = 0.1,
             }
             e.object:remove()
-            if movement.collisions[1].type == "node" then
+            if movement and movement.collisions[1] and movement.collisions[1].type == "node" then
                 local pos = movement.collisions[1].node_pos
                 local name = minetest.get_node(pos).name
                 if minetest.registered_nodes[name].on_impact then
                     minetest.registered_nodes[name].on_impact(pos)
                 end
             end
+            return
         end
+        e.old_pos = e.object:get_pos()
     end,
     impulse = function(e, vel)
         -- The documentation said that `vel` is relative to the parent entity...
@@ -90,7 +105,7 @@ minetest.register_entity(":artifact:burst", {
                 pos = vector.zero(),
                 vel = vel,
                 texture = "[fill:16x16:0,0:#fff",
-                size = 3,
+                size_tween = {3, 0},
                 glow = 14,
                 amount = 150,
                 time = 0,

mods/artifact_mechanisms/colors.lua

@@ -1,14 +1,319 @@
 
-artifact.register_entity("ccolor_swapper_display", {
+local swappers = {}
+
+minetest.register_entity(":artifact:color_swapper_display", {
     initial_properties = {
         visual = "mesh",
         mesh = "artifact_color_swapper.gltf",
-        textures = {"artifact_color_swapper_gold.png"}
+        textures = {"artifact_color_swapper_base.png", "artifact_color_swapper_cube.png"},
-    }
+        selectionbox = {
-})
+            -0.2, -0.2, -0.2,
-
+            0.2, 0.2, 0.2
-artifact.register_node("color_swapper", {
+        },
-    on_construct = function(pos)
+        collisionbox = {
+            -0.2, -0.2, -0.2,
+            0.2, 0.2, 0.2
+        },
+        use_texture_alpha = true,
+        shaded = false,
+        glow = 10,
+    },
+    _interact_time = 0.4,
+    _can_interact = function(e, m)
+        return m.character == "key"
+    end,
+    on_activate = function(e, data)
+        local pos = e.object:get_pos()
+        local node = minetest.get_node(pos)
+        if not node.name:find "color_swapper" then
+            e.object:remove()
+            return
+        end
+        e.object:set_armor_groups{immortal = 1}
+        extend(e, minetest.deserialize(data) or {})
         
+        if e.rotation then
+            e:rotate(e.rotation)
+        else
+            e:rotate(vector.zero())
+        end
+        e._name = ""..math.random()
+                
+        local nm = minetest.get_meta(e.object:get_pos())
+        local color = nm:get("color") or e.color
+        
+        e:set_color(color)
+        
+        swappers[e.object:get_pos():round():to_string()] = e
+    end,
+    on_deactivate = function(e)
+        if e.particles then
+            minetest.delete_particlespawner(e.particles)
+        end
+        swappers[e.object:get_pos():round():to_string()] = nil
+    end,
+    get_staticdata = function(e)
+        return minetest.serialize{rotation = e.rotation, color = e.color}
+    end,
+    on_interact = function(e, m)
+        e._no_interact = true
+        e.object:set_animation({x=7,y=8}, 1, 1, false)
+        m:set_color(e.color)
+        minetest.after(1, function()
+            if not e._active then return end
+            e.object:set_animation({x=0,y=6}, 1, 1, true)
+            e._no_interact = nil
+        end)
+    end,
+    on_step = function(e)
+        local found = artifact.sidekick.pos and artifact.sidekick.character == "key" and artifact.sidekick.pos:distance(e.object:get_pos()) < 6
+        for _, m in pairs(artifact.players) do
+            if m.character == "key" and m.object:get_pos():distance(e.object:get_pos()) < 6 then
+                found = true
+                break
+            end
+        end
+        if found and e._active ~= true then
+            e._active = true
+            e.object:set_animation({x=9.5,y=10}, 1, 1, false)
+            local pos = e.object:get_pos()
+            e.particles = minetest.add_particlespawner {
+                pos = {
+                    min = pos:offset(-0.5,-0.5,-0.5),
+                    max = pos:offset(0.5,0.5,0.5)
+                },
+                vel = {
+                    min = vector.new(-1,-1,-1) *0.5,
+                    max = vector.new(1,1,1) *0.5
+                },
+                size = 0.25,
+                texture = {
+                    name = "artifact_light_"..e.color..".png",
+                    alpha_tween = {1,0}
+                },
+                time = 0,
+                amount = 5,
+                attract = {
+                    kind = "point",
+                    origin = pos,
+                    strength = 0.5,
+                }
+            }
+            minetest.after(0.5, function()
+                if not e._active then return end
+                e.object:set_animation({x=0,y=6}, 1, 1, true)
+                e._no_interact = nil
+            end)
+        elseif not found and e._active ~= false then
+            e._active = false
+            e.object:set_animation({x=9,y=9.5}, 1, 1, false)
+            if e.particles then
+                minetest.delete_particlespawner(e.particles)
+                e.particles = nil
+            end
+        end
+    end,
+    -- Let us update the color live in debug mode.
+    on_punch = artifact.debug and function(e)
+        local nm = minetest.get_meta(e.object:get_pos())
+        local color = nm:get("color") or e.color
+        
+        e:set_color(color)
+    end or nil,
+    set_color = function(e, color)
+        e.color = color
+        
+        e.object:set_properties {
+            textures = {"blank.png", "artifact_color_swapper_cube_"..e.color..".png"}
+        }
+        
+        local nm = minetest.get_meta(e.object:get_pos())
+        nm:set_string("color", color)
+    end,
+    rotate = function(e, rot)
+        e.object:set_rotation(rot)
+        e.rotation = rot
     end,
 })
+
+local function swapper_onload(pos)
+    local m = minetest.get_meta(pos)
+    if not m:contains("initialized") then
+        m:set_string("initialized", "true")
+        local rot = artifact.facedir_to_rotation(minetest.get_node(pos).param2)
+        minetest.add_entity(pos, "artifact:color_swapper_display", minetest.serialize{rotation = rot, color = "gold"})
+    end
+end
+
+artifact.register_node("color_swapper", {
+    drawtype = "nodebox",
+    node_box = {
+        type = "fixed",
+        fixed = {
+            -0.5, -0.45, -0.5,
+            0.5, -0.45, 0.5
+        }
+    },
+    tiles = {"artifact_color_swapper_base.png"},
+    use_texture_alpha = "clip",
+    paramtype = "light",
+    walkable = false,
+    paramtype2 = "facedir",
+    groups = {call_on_load = 1},
+    light_source = 8,
+    on_construct = swapper_onload,
+    on_load = swapper_onload,
+    on_destruct = function(pos)
+        swappers[pos:to_string()].object:remove()
+        swappers[pos:to_string()] = nil
+    end,
+    on_rotate = function(pos, node, p, click, param2)
+        node.param2 = param2
+        minetest.swap_node(pos, node)
+        local rot = artifact.facedir_to_rotation(param2)
+        swappers[pos:to_string()]:rotate(rot)
+        return true
+    end
+})
+
+
+-- MARK: Targets
+
+local targets = {}
+
+minetest.register_entity(":artifact:color_target_display", {
+    initial_properties = {
+        visual = "cube",
+        mesh = "artifact_color_target.gltf",
+        textures = {"artifact_color_target_base.png^artifact_color_target_gold_off.png"},
+        use_texture_alpha = true,
+        shaded = false,
+    },
+    _interact_time = 0.4,
+    _can_interact = function(e, m)
+        return m.character == "key" and m.color == e.color
+    end,
+    on_activate = function(e, data)
+        local pos = e.object:get_pos()
+        local node = minetest.get_node(pos)
+        if not node.name:find "color_target" then
+            e.object:remove()
+            return
+        end
+        e.object:set_armor_groups{immortal = 1}
+        extend(e, minetest.deserialize(data) or {})
+        
+        if e.rotation then
+            e:rotate(e.rotation)
+        else
+            e:rotate(vector.zero())
+        end
+        e._name = ""..math.random()
+                
+        local nm = minetest.get_meta(e.object:get_pos())
+        local color = nm:get("color") or e.color
+        
+        e:set_color(color)
+        
+        targets[e.object:get_pos():round():to_string()] = e
+    end,
+    on_deactivate = function(e)
+        targets[e.object:get_pos():round():to_string()] = nil
+    end,
+    get_staticdata = function(e)
+        return minetest.serialize{rotation = e.rotation, color = e.color}
+    end,
+    on_interact = function(e, m)
+        if m.color == e.color then
+            e._no_interact = true
+            m:set_color(nil)
+            local receivers = minetest.deserialize(minetest.get_meta(e.object:get_pos():round()):get("receivers") or "return nil")
+            if receivers then
+                artifact.dispatch_event(receivers, {type = "pulse"})
+            end
+            -- Update the entity's texture every globalstep, because that's the only way to do a texture animation.
+            local progress = 0
+            local delay = 0
+            local dir = true
+            local function update()
+                if dir then
+                    progress = progress +(255 *0.05)
+                    if progress >= 255 then
+                        dir = false
+                        minetest.after(1, update)
+                        return
+                    end
+                else
+                    progress = progress -(255 *0.05)
+                    if progress < 0 then
+                        e._no_interact = nil
+                        local tx = "artifact_color_target_base.png^artifact_color_target_"..e.color.."_off.png"
+                        e.object:set_properties {
+                            textures = {tx, tx, tx, tx, tx, tx}
+                        }
+                        return
+                    end
+                end
+                local tx = "artifact_color_target_base.png^artifact_color_target_"..e.color.."_off.png^(artifact_color_target_"..e.color.."_on.png^[opacity:"..progress..")"
+                e.object:set_properties {
+                    textures = {tx, tx, tx, tx, tx, tx}
+                }
+                minetest.after(0, update)
+            end
+            minetest.after(0, update)
+        end
+    end,
+    -- Let us update the color live in debug mode.
+    on_punch = artifact.debug and function(e)
+        local nm = minetest.get_meta(e.object:get_pos())
+        local color = nm:get("color") or e.color
+        
+        e:set_color(color)
+    end or nil,
+    set_color = function(e, color)
+        e.color = color
+        
+        local tx = "artifact_color_target_base.png^artifact_color_target_"..e.color.."_off.png"
+        e.object:set_properties {
+            textures = {tx, tx, tx, tx, tx, tx}
+        }
+        
+        local nm = minetest.get_meta(e.object:get_pos())
+        nm:set_string("color", color)
+    end,
+    rotate = function(e, rot)
+        e.object:set_rotation(rot)
+        e.rotation = rot
+    end,
+})
+
+local function target_onload(pos)
+    local m = minetest.get_meta(pos)
+    if not m:contains("initialized") then
+        m:set_string("initialized", "true")
+        local rot = artifact.facedir_to_rotation(minetest.get_node(pos).param2)
+        minetest.add_entity(pos, "artifact:color_target_display", minetest.serialize{rotation = rot, color = "gold"})
+    end
+end
+
+artifact.register_node("color_target", {
+    drawtype = "airlike",
+    tiles = {"artifact_color_target_base.png^artifact_color_target_gold_off.png"},
+    use_texture_alpha = "clip",
+    paramtype = "light",
+    paramtype2 = "facedir",
+    groups = {call_on_load = 1},
+    on_construct = target_onload,
+    on_load = target_onload,
+    on_destruct = function(pos)
+        targets[pos:to_string()].object:remove()
+        targets[pos:to_string()] = nil
+    end,
+    on_rotate = function(pos, node, p, click, param2)
+        node.param2 = param2
+        minetest.swap_node(pos, node)
+        local rot = artifact.facedir_to_rotation(param2)
+        targets[pos:to_string()]:rotate(rot)
+        return true
+    end
+})

mods/artifact_mechanisms/doors.lua

@@ -54,16 +54,10 @@ minetest.register_entity(":artifact:door", {
             }
         end
         if e.rotation then
-            e.rotation.y = e.rotation.y +math.pi
             e:rotate(e.rotation)
         else
-            e.rotation = vector.zero()
+            e:rotate(vector.zero())
         end
-        local box = artifact.rotate_selectionbox(e.box_closed_normal, e.rotation)
-        e.object:set_properties {
-            selectionbox = box,
-            collisionbox = box
-        }
         e._name = ""..math.random()
         
         local nm = minetest.get_meta(e.object:get_pos())
@@ -147,6 +141,15 @@ minetest.register_entity(":artifact:door", {
     get_staticdata = function(e)
         return minetest.serialize{type = e.type, _locked = e._locked, rotation = e.rotation, inverted = e.inverted}
     end,
+    on_punch = artifact.debug and function(e)
+        local nm = minetest.get_meta(e.object:get_pos())
+        if nm:get_string("locked") == "true" then
+            e._locked = true
+        end
+        if e._locked then
+            e._no_interact = true
+        end
+    end or nil,
     unlock = function(e)
         if e._locked then
             e._locked = false
@@ -156,8 +159,10 @@ minetest.register_entity(":artifact:door", {
     rotate = function(e, rot)
         e.object:set_rotation(rot)
         e.rotation = rot
+        local box = artifact.rotate_selectionbox(e._open and (e.inverted and e.box_open_inverted or e.box_open_normal) or e.box_closed_normal, e.rotation)
         e.object:set_properties {
-            selectionbox = box
+            selectionbox = box,
+            collisionbox = box
         }
     end,
     on_whack = function(e)
@@ -191,7 +196,7 @@ local function register_basic_door(type)
         if not m:contains("initialized") then
             m:set_string("initialized", "true")
             local rot = artifact.facedir_to_rotation(minetest.get_node(pos).param2)
-            minetest.add_entity(pos, "artifact:door", minetest.serialize{type = type}):get_luaentity():rotate(rot)
+            minetest.add_entity(pos, "artifact:door", minetest.serialize{type = type, rotation = rot})
         end
     end
     local function ondestruct(pos, reason)

mods/artifact_mechanisms/init.lua

@@ -32,6 +32,7 @@ end
 
 include "basics.lua"
 include "doors.lua"
+include "colors.lua"
 include "large_doors.lua"
 include "chest.lua"
 

mods/artifact_player/init.lua

@@ -17,6 +17,7 @@ Player = setmetatable({
         m.meta = p:get_meta()
         m.character = m.meta:get("character") or "key"
         m.spawn_point = m.meta:get("spawnpoint") or artifact.origin
+        m.color = m.meta:get("color")
         
         m.inv = p:get_inventory()
         m.inv:set_stack("main", 1, ItemStack("input_"..m.character))
@@ -82,6 +83,10 @@ Player = setmetatable({
         
         -- No unreasonable FOV settings here.
         p:set_fov(72)
+        p:set_fov(0, true, 0)
+        
+        -- Tell raycast collisions that we're a player.
+        p:set_armor_groups(extend(p:get_armor_groups(), {player = 1}))
         
         m.hud = {}
         m.poi = {}
@@ -142,7 +147,7 @@ Player = setmetatable({
                             m.interaction_start = nil
                         end
                     end
-                    if e.on_interact and not e._no_interact and (not names_match or names_match and not m.interaction_marker) then
+                    if e.on_interact and not e._no_interact and (not names_match or names_match and not m.interaction_marker) and (not e._can_interact or e:_can_interact(m)) then
                         if m.interaction_marker then m.object:hud_remove(m.interaction_marker) end
                         local dst = e.object:get_pos()
                         if e._interact_marker_offset then dst = dst +e:_interact_marker_offset() end
@@ -204,13 +209,25 @@ Player = setmetatable({
                 p:set_physics_override{
                     speed = 1.5
                 }
+                p:set_fov(1.1, true, 0.2)
             else
                 if p:get_animation().y ~= 1 then p:set_animation({x=0, y=1}, 1.5, 0.2, true) end
                 p:set_physics_override{
                     speed = 1
                 }
+                p:set_fov(0, true, 0.2)
             end
         else
+            -- We can't call this unconditionally because during the first couple
+            -- globalsteps, doing so will heavily distort the player's FOV for
+            -- some reason. Since `m.moving` is never set to true until the player
+            -- starts sprinting, we can sidestep this issue fairly trivially.
+            if m.moving then
+                p:set_physics_override{
+                    speed = 1
+                }
+                p:set_fov(0, true, 0.2)
+            end
             m.moving = false
             if p:get_animation().y ~= 0 then p:set_animation({x=0, y=0}) end
         end
@@ -263,7 +280,7 @@ Player = setmetatable({
         
         -- MARK: Progressive interaction
         
-        if ctl.place and m.ctl.place and m.pointed_obj and m.pointed_obj.on_interact and not m.pointed_obj._no_interact then
+        if ctl.place and m.ctl.place and m.pointed_obj and m.pointed_obj.on_interact and not m.pointed_obj._no_interact and (not m.pointed_obj._can_interact or m.pointed_obj:_can_interact(m)) then
             if not m.interaction_start then
                 m.interaction_start = time
             else
@@ -284,7 +301,7 @@ Player = setmetatable({
                     m.object:hud_change(m.interaction_marker, "text", "artifact_rmb_25.png")
                 end
             end
-        elseif not ctl.place and m.interaction_start and (not m.pointed_obj or not m.pointed_obj._no_interact) then
+        elseif not ctl.place and m.interaction_start and (not m.pointed_obj or not m.pointed_obj._no_interact or m.pointed_obj._can_interact and m.pointed_obj:_can_interact(m)) then
             m.interaction_start = nil
             if m.interaction_marker then
                 m.object:hud_change(m.interaction_marker, "text", "artifact_rmb.png")
@@ -386,12 +403,72 @@ Player = setmetatable({
     set_character = function(m, to)
         m.character = to
         m.meta:set_string("character", to)
+        if to == "vix" then
+            if m.color_hud then
+                m.object:hud_remove(m.color_hud)
+                m.color_hud = nil
+            end
+        else
+            if m.color and not m.color_hud then
+                m.color_hud = m.object:hud_add {
+                    type = "image",
+                    position = {x=0.5,y=1},
+                    offset = {x=0,y=0},
+                    alignment = {x=0,y=-1},
+                    scale = {x=500,y=5},
+                    text = "[fill:1x1:0,0:"..artifact.colors[m.color],
+                }
+            end
+        end
+    end,
+    set_color = function(m, color)
+        if artifact.debug or artifact.story.get_state() > artifact.story.states.pre_vix and m.character == "key" then
+            m.color = color
+            m.meta:set_string("color", color or "")
+            if m.color_hud then
+                m.object:hud_remove(m.color_hud)
+            end
+            -- If we cleared the color by passing nil, there's no need to animate or re-add the HUD.
+            if not color then return end
+            m.color_hud = m.object:hud_add {
+                type = "image",
+                position = {x=0.5,y=1},
+                offset = {x=0,y=0},
+                alignment = {x=0,y=-1},
+                scale = {x=500,y=5},
+                text = "[fill:1x1:0,0:"..artifact.colors[m.color],
+            }
+            local el = artifact.hud_add(m, {
+                type = "image",
+                pos = {x=0.5,y=0.5},
+                scale = {x=10000,y=10000},
+                opacity = 0,
+                image = "[fill:1x1:"..artifact.colors[m.color]
+            })
+            el:animate {
+                opacity = {
+                    value = 25,
+                    duration = 0.3
+                }
+            }
+            minetest.after(0.3, function()
+                el:animate {
+                    opacity = {
+                        value = 0,
+                        duration = 0.3
+                    }
+                }
+                minetest.after(0.3, function()
+                    el:remove(m)
+                end)
+            end)
+        end
     end,
     add_health_bar = function(m)
         m.healthbar = m.object:hud_add {
             type = "statbar",
             position = {x=0.5,y=1},
-            offset = {x=-27 *5,y=artifact.debug and -96 or -40},
+            offset = {x=-27 *5,y=artifact.debug and -96 or -42},
             scale = {x=4,y=4},
             alignment = {x=-1, y=-1},
             size = {x=27,y=27},
@@ -464,10 +541,27 @@ function artifact.register_input(name)
         end,
         drop = "",
         range = 0,
+        pointabilities = {
+            nodes = {
+                ["group:everything"] = false
+            },
+            objects = {
+                ["group:immortal"] = false,
+                ["group:fleshy"] = false
+            }
+        },
         on_drop = function(s, p, pos)
             local m = artifact.players[p:get_player_name()]
-            if artifact.debug or artifact.story.get_state() > artifact.story.states.pre_vix then
+            if not m._swapping_character and (artifact.debug or artifact.story.get_state() > artifact.story.states.pre_vix) then
                 artifact.swap_character(m)
+                -- If Key was pointing at something Vix shouldn't be able to interact with,
+                -- but Vix is also pointing at it, then remove the interaction marker since
+                -- it would be misleading.
+                if m.pointed_obj and m.interaction_marker and (not m.pointed_obj._can_interact or m.pointed_obj:_can_interact(m)) then
+                    m.object:hud_remove(m.interaction_marker)
+                    m.interaction_marker = nil
+                    m.interaction_start = nil
+                end
             end
             return s
         end,

mods/artifact_world/init.lua

@@ -11,6 +11,8 @@ function artifact.register_node(name, def)
     if not def.groups then def.groups = {} end
     if artifact.debug then
         def.groups.dig_immediate = 3
+    else
+        def.groups.everything = 1
     end
     if def._variants then
         for _, x in ipairs(def._variants) do
@@ -317,6 +319,16 @@ artifact.register_node("ladder_wood", {
     climbable = true
 })
 
+artifact.register_node("ladder_iron", {
+    drawtype = "mesh",
+    mesh = "artifact_ladder.obj",
+    paramtype = "light",
+    paramtype2 = "facedir",
+    tiles = {"artifact_ladder_iron.png"},
+    walkable = false,
+    climbable = true
+})
+
 
 artifact.register_node("glass", {
     drawtype = "glasslike",
@@ -333,7 +345,38 @@ local function register_lamp(color, brightness)
         tiles = {"artifact_lamp_"..color..".png"},
         light_source = brightness,
         paramtype = "light",
-        sunlight_propagates = true
+        sunlight_propagates = true,
+        collision_box = {
+            type = "fixed",
+            fixed = {
+                {
+                    -2/16,0,-2/16,
+                    2/16, 4/16, 2/16
+                }
+            }
+        }
+    })
+    artifact.register_node("lamp_"..color.."_wall", {
+        drawtype = "mesh",
+        mesh = "artifact_lamp_wall.obj",
+        tiles = {"artifact_lamp_"..color..".png"},
+        light_source = brightness,
+        paramtype = "light",
+        sunlight_propagates = true,
+        paramtype2 = "facedir",
+        collision_box = {
+            type = "fixed",
+            fixed = {
+                {
+                    -2/16,-1/16,-1/16,
+                    2/16, 3/16, 3/16
+                },
+                {
+                    -1/16,4/16,-1/16,
+                    1/16, 6/16, 8/16
+                },
+            }
+        }
     })
     artifact.register_node("lamp_"..color.."_hanging", {
         drawtype = "mesh",
@@ -341,7 +384,16 @@ local function register_lamp(color, brightness)
         tiles = {"artifact_lamp_"..color..".png"},
         light_source = brightness,
         paramtype = "light",
-        sunlight_propagates = true
+        sunlight_propagates = true,
+        collision_box = {
+            type = "fixed",
+            fixed = {
+                {
+                    -2/16,0,-2/16,
+                    2/16, 4/16, 2/16
+                }
+            }
+        }
     })
 end
 

mods/artifact_world/models/artifact_lamp_wall.obj

@@ -0,0 +1,141 @@
+# Made in Blockbench 4.12.5
+mtllib artifact_lamp_wall.mtl
+
+o cube
+v 0.125 0.1875 0.1875
+v 0.125 0.1875 -0.0625
+v 0.125 -0.0625 0.1875
+v 0.125 -0.0625 -0.0625
+v -0.125 0.1875 -0.0625
+v -0.125 0.1875 0.1875
+v -0.125 -0.0625 -0.0625
+v -0.125 -0.0625 0.1875
+vt 0 1
+vt 0.25 1
+vt 0.25 0.75
+vt 0 0.75
+vt 0 0.75
+vt 0.25 0.75
+vt 0.25 0.5
+vt 0 0.5
+vt 0.25 1
+vt 0.5 1
+vt 0.5 0.75
+vt 0.25 0.75
+vt 0.25 0.75
+vt 0.5 0.75
+vt 0.5 0.5
+vt 0.25 0.5
+vt 0.25 0.25
+vt 0 0.25
+vt 0 0.5
+vt 0.25 0.5
+vt 0.75 1
+vt 0.5 1
+vt 0.5 0.75
+vt 0.75 0.75
+vn 0 0 -1
+vn 1 0 0
+vn 0 0 1
+vn -1 0 0
+vn 0 1 0
+vn 0 -1 0
+usemtl m_d2e02cf9-1542-9bb0-7e9d-18f7f87eca79
+f 4/4/1 7/3/1 5/2/1 2/1/1
+f 3/8/2 4/7/2 2/6/2 1/5/2
+f 8/12/3 3/11/3 1/10/3 6/9/3
+f 7/16/4 8/15/4 6/14/4 5/13/4
+f 6/20/5 1/19/5 2/18/5 5/17/5
+f 7/24/6 4/23/6 3/22/6 8/21/6
+o cube
+v -0.0624999999999993 0.24999999999999928 2.42146138045992e-16
+v -0.06250000000000071 0.3749999999999993 -2.5745422303532846e-16
+v -0.062499999999999355 0.2500000000000013 0.5000000000000002
+v -0.06250000000000076 0.3750000000000013 0.4999999999999998
+v 0.0624999999999993 0.3750000000000007 -2.42146138045992e-16
+v 0.06250000000000071 0.2500000000000007 2.5745422303532846e-16
+v 0.06249999999999924 0.3750000000000027 0.4999999999999998
+v 0.06250000000000064 0.2500000000000027 0.5000000000000002
+vt 0.25 0.5
+vt 0.375 0.5
+vt 0.375 0
+vt 0.25 0
+vt 0.5 0.75
+vt 0.625 0.75
+vt 0.625 0.25
+vt 0.5 0.25
+vt 0.375 0.5
+vt 0.5 0.5
+vt 0.5 0
+vt 0.375 0
+vt 0.625 0.75
+vt 0.75 0.75
+vt 0.75 0.25
+vt 0.625 0.25
+vt 0.125 0.125
+vt 0 0.125
+vt 0 0.25
+vt 0.125 0.25
+vt 0.875 1
+vt 0.75 1
+vt 0.75 0.875
+vt 0.875 0.875
+vn -1.12246949261663e-14 1 -3.996802888650565e-15
+vn -1 -1.12246949261663e-14 -1.2246467991469107e-16
+vn 1.12246949261663e-14 -1 3.996802888650565e-15
+vn 1 1.12246949261663e-14 1.2246467991469107e-16
+vn 1.2246467991473663e-16 -3.996802888650562e-15 -1
+vn -1.2246467991473663e-16 3.996802888650562e-15 1
+usemtl m_d2e02cf9-1542-9bb0-7e9d-18f7f87eca79
+f 12/28/7 15/27/7 13/26/7 10/25/7
+f 11/32/8 12/31/8 10/30/8 9/29/8
+f 16/36/9 11/35/9 9/34/9 14/33/9
+f 15/40/10 16/39/10 14/38/10 13/37/10
+f 14/44/11 9/43/11 10/42/11 13/41/11
+f 15/48/12 12/47/12 11/46/12 16/45/12
+o cube
+v 0.09375 0.25 0.15625
+v 0.09375 0.25 -0.03125
+v 0.09375 0.1875 0.15625
+v 0.09375 0.1875 -0.03125
+v -0.09375 0.25 -0.03125
+v -0.09375 0.25 0.15625
+v -0.09375 0.1875 -0.03125
+v -0.09375 0.1875 0.15625
+vt 0.5 0.6875
+vt 0.6875 0.6875
+vt 0.6875 0.640625
+vt 0.5 0.640625
+vt 0.5 0.6875
+vt 0.6875 0.6875
+vt 0.6875 0.640625
+vt 0.5 0.640625
+vt 0.5 0.6875
+vt 0.6875 0.6875
+vt 0.6875 0.640625
+vt 0.5 0.640625
+vt 0.5 0.6875
+vt 0.6875 0.6875
+vt 0.6875 0.640625
+vt 0.5 0.640625
+vt 0.3125 0.4375
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+vt 0.3125 0.25
+vt 0.3125 0.4375
+vt 0.5 0.4375
+vt 0.5 0.25
+vt 0.3125 0.25
+vn 0 0 -1
+vn 1 0 0
+vn 0 0 1
+vn -1 0 0
+vn 0 1 0
+vn 0 -1 0
+usemtl m_d2e02cf9-1542-9bb0-7e9d-18f7f87eca79
+f 20/52/13 23/51/13 21/50/13 18/49/13
+f 19/56/14 20/55/14 18/54/14 17/53/14
+f 24/60/15 19/59/15 17/58/15 22/57/15
+f 23/64/16 24/63/16 22/62/16 21/61/16
+f 22/68/17 17/67/17 18/66/17 21/65/17
+f 23/72/18 20/71/18 19/70/18 24/69/18