feat: multiple components per entity support

res/content/base/entities/drop.json

@@ -1,4 +1,7 @@
 {
+    "components": [
+        "drop"
+    ],
     "hitbox": [0.2, 0.125, 0.2],
     "triggers": [
         ["aabb", -0.2, -0.2, -0.2, 0.2, 0.2, 0.2],

res/modules/internal/stdcomp.lua

@@ -53,6 +53,7 @@ return {
         entity.rigidbody = new_Rigidbody(eid)
         entity.modeltree = new_Modeltree(eid)
         entity.data = {}
+        entity.components = {}
         entities[eid] = entity;
         return entity
     end,
@@ -62,17 +63,19 @@ return {
     remove_Entity = function(eid)
         local entity = entities[eid]
         if entity then
-            entity.env = nil
+            entity.components = nil
             entities[eid] = nil;
         end
     end,
     update = function()
         for id,entity in pairs(entities) do
-            local callback = entity.env.on_update
-            if callback then
-                local result, err = pcall(callback)
-                if err then
-                    print(err)
+            for _, component in pairs(entity.components) do
+                local callback = component.on_update
+                if callback then
+                    local result, err = pcall(callback)
+                    if err then
+                        print(err)
+                    end
                 end
             end
         end