add base:player_animator component

res/content/base/entities/player.json

@@ -1,3 +1,6 @@
 {
+    "components": [
+        "base:player_animator"
+    ],
     "hitbox": [0.6, 1.8, 0.6]
 }

res/content/base/scripts/components/drop.lua

@@ -28,7 +28,7 @@ end
 
 do -- setup visuals
     local matrix = mat4.idt()
-    scale = item_models.setup(dropitem.id, rig)
+    scale = item_models.setup(dropitem.id, rig, 0)
     local bodysize = math.min(scale[1], scale[2], scale[3]) * DROP_SCALE
     body:set_size({scale[1] * DROP_SCALE, bodysize, scale[3] * DROP_SCALE})
     mat4.mul(matrix, rotation, matrix)

res/content/base/scripts/components/player_animator.lua

@@ -0,0 +1,27 @@
+local item_models = require "core:item_models"
+
+local tsf = entity.transform
+local body = entity.rigidbody
+local rig = entity.skeleton
+
+local itemid = 0
+local itemIndex = rig:index("item")
+
+local function refresh_model(id)
+    if id == 0 then
+        rig:set_model(itemIndex, "")
+    else
+        itemid = id
+        local scale = item_models.setup(itemid, rig, itemIndex)
+        rig:set_matrix(itemIndex, mat4.scale(scale))
+    end 
+end
+
+function on_render()
+    local invid, slotid = player.get_inventory()
+    local id, _ = inventory.get(invid, slotid)
+    if id ~= itemid then
+        refresh_model(id)
+    end
+end
+

res/content/base/skeletons/player.json

@@ -9,6 +9,10 @@
             "name": "head",
             "model": "player-head",
             "offset": [0, 0.4, 0]
+          },
+          {
+            "name": "item",
+            "offset": [0.26, 0, -0.23]
           }
         ]
       }