diff --git a/code/foundation/src/models/components.h b/code/foundation/src/models/components.h
index 3610bb5..14b59a9 100644
--- a/code/foundation/src/models/components.h
+++ b/code/foundation/src/models/components.h
@@ -148,6 +148,10 @@ typedef struct {
 
 typedef struct {
     uint16_t asset;
+
+    // progress bar
+    uint8_t progress_active;
+    float progress_value;
 } Device;
 
 typedef struct {
diff --git a/code/foundation/src/pkt/packet.c b/code/foundation/src/pkt/packet.c
index 113111f..61533cb 100644
--- a/code/foundation/src/pkt/packet.c
+++ b/code/foundation/src/pkt/packet.c
@@ -35,31 +35,31 @@ int32_t pkt_header_encode(pkt_messages id, uint16_t view_id, void *data, size_t
 int32_t pkt_header_decode(pkt_header *table, void *data, size_t datalen) {
     cw_unpack_context uc = {0};
     pkt_unpack_msg_raw(&uc, data, (uint32_t)datalen, PKT_HEADER_ELEMENTS);
-    
+
     cw_unpack_next(&uc);
     if (uc.item.type != CWP_ITEM_POSITIVE_INTEGER || uc.item.as.u64 > UINT16_MAX) {
         return -1; // invalid packet id
     }
-    
+
     uint16_t pkt_id = (uint16_t)uc.item.as.u64;
-    
+
     cw_unpack_next(&uc);
     if (uc.item.type != CWP_ITEM_POSITIVE_INTEGER || uc.item.as.u64 > UINT16_MAX) {
         return -1; // invalid view id
     }
-    
+
     uint16_t view_id = (uint16_t)uc.item.as.u64;
-    
+
     cw_unpack_next(&uc);
     const void *packed_blob = uc.item.as.bin.start;
     uint32_t packed_size = uc.item.as.bin.length;
-    
+
     table->id = pkt_id;
     table->view_id = view_id;
     table->data = (void *)packed_blob;
     table->datalen = packed_size;
     table->ok = 1;
-    
+
     return pkt_validate_eof_msg(&uc) != -1;
 }
 
@@ -95,12 +95,12 @@ int32_t pkt_unpack_struct(cw_unpack_context *uc, pkt_desc *desc, void *raw_blob,
                 zpl_memcopy(blob + field->offset, bin_buf, actual_size);
             }break;
             default: {
-                zpl_printf("[WARN] unsupported pkt field type %lld !\n", field->type); 
+                zpl_printf("[WARN] unsupported pkt field type %lld !\n", field->type);
                 return -1; // unsupported field
             }break;
         }
     }
-    
+
     return 0;
 }
 
@@ -117,10 +117,10 @@ int32_t pkt_pack_struct(cw_pack_context *pc, pkt_desc *desc, void *raw_blob, uin
             } else {
                 cw_pack_unsigned(pc, 0);
             }
-            
+
             continue;
         }
-        
+
         switch (field->type) {
             case CWP_ITEM_BIN: {
                 if (field->size >= PKT_BUFSIZ) return -1; // bin blob too big
@@ -149,12 +149,12 @@ int32_t pkt_pack_struct(cw_pack_context *pc, pkt_desc *desc, void *raw_blob, uin
                 cw_pack_float(pc, num);
             }break;
             default: {
-                zpl_printf("[WARN] unsupported pkt field type %lld !\n", field->type); 
+                zpl_printf("[WARN] unsupported pkt field type %lld !\n", field->type);
                 return -1; // unsupported field
             }break;
         }
     }
-    
+
     return 0;
 }
 
@@ -168,7 +168,7 @@ void pkt_dump_struct(pkt_desc *desc, void* raw_blob, uint32_t blob_size) {
             if (val == field->skip_eq) {
                 field += field->skip_count;
             }
-            
+
             continue;
         }
         zpl_printf("  \"%s\": ", field->name);
@@ -189,7 +189,7 @@ void pkt_dump_struct(pkt_desc *desc, void* raw_blob, uint32_t blob_size) {
                 zpl_printf("%f\n", *(double*)(blob + field->offset));
             }break;
             default: {
-                zpl_printf("[WARN] unsupported pkt field type %lld !\n", field->type); 
+                zpl_printf("[WARN] unsupported pkt field type %lld !\n", field->type);
                 return; // unsupported field
             }break;
         }
diff --git a/code/foundation/src/systems/modules/system_producer.c b/code/foundation/src/systems/modules/system_producer.c
index 50880e4..1fdad73 100644
--- a/code/foundation/src/systems/modules/system_producer.c
+++ b/code/foundation/src/systems/modules/system_producer.c
@@ -19,7 +19,7 @@ void ProduceItems(ecs_iter_t *it) {
                 continue;
             }
 
-            // if (producer[i].burn_time <= 0.0f) continue; TODO
+            // if (producer[i].energy_level <= 0.0f) continue;
             if (producer[i].process_time < game_time()) {
                 if (producer[i].processed_item > 0) {
                     uint64_t e = item_spawn(producer[i].processed_item, 1);
@@ -41,6 +41,9 @@ void ProduceItems(ecs_iter_t *it) {
                 }
             }
         }
+
+        d[i].progress_active = (producer[i].processed_item > 0);
+        d[i].progress_value = 1.0f-((producer[i].process_time - game_time()) / game_rules.furnace_cook_time);
     }
 }
 
diff --git a/code/foundation/src/world/entity_view.c b/code/foundation/src/world/entity_view.c
index 1236842..3ac3cc2 100644
--- a/code/foundation/src/world/entity_view.c
+++ b/code/foundation/src/world/entity_view.c
@@ -5,50 +5,52 @@
 ZPL_TABLE_DEFINE(entity_view_tbl, entity_view_tbl_, entity_view);
 
 pkt_desc pkt_entity_view_desc[] = {
-    
+
     { PKT_UINT(entity_view, kind) },
     { PKT_UINT(entity_view, flag) },
     { PKT_HALF(entity_view, x) },
     { PKT_HALF(entity_view, y) },
-    
+
     { PKT_KEEP_IF(entity_view, blocks_used, 0, 2) }, // NOTE(zaklaus): skip velocity for chunks
     { PKT_HALF(entity_view, vx) },
     { PKT_HALF(entity_view, vy) },
-    
+
     { PKT_SKIP_IF(entity_view, blocks_used, 0, 2) }, // NOTE(zaklaus): skip blocks for anything else
     { PKT_ARRAY(entity_view, blocks) },
     { PKT_ARRAY(entity_view, outer_blocks) },
-    
+
     { PKT_KEEP_IF(entity_view, blocks_used, 0, 2) }, // NOTE(zaklaus): skip hp for chunks
     { PKT_HALF(entity_view, hp) },
     { PKT_HALF(entity_view, max_hp) },
-    
+
     { PKT_KEEP_IF(entity_view, kind, EKIND_VEHICLE, 1) }, // NOTE(zaklaus): keep for vehicles
     { PKT_HALF(entity_view, heading) },
     { PKT_UINT(entity_view, inside_vehicle) },
     { PKT_UINT(entity_view, veh_kind) },
-    
+
     { PKT_KEEP_IF(entity_view, kind, EKIND_ITEM, 2) },
     { PKT_UINT(entity_view, asset) },
     { PKT_UINT(entity_view, quantity) },
-    
-    { PKT_KEEP_IF(entity_view, kind, EKIND_DEVICE, 1) },
+
+    { PKT_KEEP_IF(entity_view, kind, EKIND_DEVICE, 3) },
     { PKT_UINT(entity_view, asset) },
-    
+    { PKT_UINT(entity_view, progress_active) },
+    { PKT_HALF(entity_view, progress_value) },
+
     { PKT_KEEP_IF(entity_view, has_items, true, 3) },
     { PKT_UINT(entity_view, has_items) },
     { PKT_UINT(entity_view, selected_item) },
     { PKT_ARRAY(entity_view, items) },
-    
+
     { PKT_UINT(entity_view, pick_ent) },
     { PKT_UINT(entity_view, sel_ent) },
-    
+
     { PKT_KEEP_IF(entity_view, has_storage_items, true, 3) },
     { PKT_UINT(entity_view, has_storage_items) },
     { PKT_UINT(entity_view, storage_selected_item) },
     { PKT_ARRAY(entity_view, storage_items) },
-    
-    { PKT_END }, 
+
+    { PKT_END },
 };
 
 size_t entity_view_pack_struct(void *data, size_t len, entity_view *view) {
@@ -61,10 +63,10 @@ size_t entity_view_pack_struct(void *data, size_t len, entity_view *view) {
 entity_view entity_view_unpack_struct(void *data, size_t len) {
     cw_unpack_context uc = {0};
     cw_unpack_context_init(&uc, data, (unsigned long)len, 0);
-    
+
     entity_view view = {0};
     pkt_unpack_struct(&uc, pkt_entity_view_desc, PKT_STRUCT_PTR(&view));
-    
+
     return view;
 }
 
diff --git a/code/foundation/src/world/entity_view.h b/code/foundation/src/world/entity_view.h
index fa52802..677e847 100644
--- a/code/foundation/src/world/entity_view.h
+++ b/code/foundation/src/world/entity_view.h
@@ -63,6 +63,10 @@ typedef struct entity_view {
     asset_id asset;
     uint32_t quantity;
 
+    // NOTE(zaklaus): device progress bar
+    uint32_t progress_active;
+    float progress_value;
+
     // NOTE(zaklaus): inventory
     uint8_t has_items;
     Item items[ITEMS_INVENTORY_SIZE];
diff --git a/code/foundation/src/world/prediction.c b/code/foundation/src/world/prediction.c
index ae30ee0..c6d5bee 100644
--- a/code/foundation/src/world/prediction.c
+++ b/code/foundation/src/world/prediction.c
@@ -22,25 +22,25 @@ static inline float spherical_lerp(float a, float b, float t) {
     a = base_angle(a);
     b = base_angle(b);
     float d = b - a;
-    
+
     if (d < -ZPL_PI) {
         b += ZPL_TAU;
     } else if (d > ZPL_PI) {
         b -= ZPL_TAU;
     }
-    
+
     return base_angle(zpl_lerp(a, b, t));
 }
 
 float smooth_val(float cur, float tgt, float dt) {
     float factor = zpl_clamp01(map_factor(zpl_unlerp(dt, WORLD_TRACKER_UPDATE_MP_FAST_MS, WORLD_TRACKER_UPDATE_MP_SLOW_MS)));
-    
+
     return zpl_lerp(cur, tgt, zpl_clamp01(zpl_lerp(PREDICT_SMOOTH_FACTOR_LO, PREDICT_SMOOTH_FACTOR_HI, factor)*platform_frametime()));
 }
 
 float smooth_val_spherical(float cur, float tgt, float dt) {
     float factor = zpl_clamp01(map_factor(zpl_unlerp(dt, WORLD_TRACKER_UPDATE_MP_FAST_MS, WORLD_TRACKER_UPDATE_MP_SLOW_MS)));
-    
+
     return spherical_lerp(cur, tgt, zpl_clamp01(zpl_lerp(PREDICT_SMOOTH_FACTOR_LO, PREDICT_SMOOTH_FACTOR_HI, factor)*platform_frametime()));
 }
 
@@ -57,7 +57,7 @@ void predict_receive_update(entity_view *d, entity_view *data) {
         data->ty = ty;
         data->theading = theading;
     }
-    
+
     data->tran_effect = d->tran_effect;
     data->tran_time = d->tran_time;
 }
@@ -67,7 +67,7 @@ void predict_receive_update(entity_view *d, entity_view *data) {
 void lerp_entity_positions(uint64_t key, entity_view *data) {
     (void)key;
     world_view *view = game_world_view_get_active();
-    
+
     if (data->flag == EFLAG_INTERP) {
 #if ENTITY_DO_LERP_SP==0
         if (game_get_kind() == GAMEKIND_CLIENT)
@@ -92,22 +92,22 @@ void do_entity_fadeinout(uint64_t key, entity_view * data) {
     switch (data->tran_effect) {
         case ETRAN_FADEIN: {
             data->tran_time += platform_frametime();
-            
+
             if (data->tran_time > 1.0f) {
                 data->tran_effect = ETRAN_NONE;
                 data->tran_time = 1.0f;
             }
         }break;
-        
+
         case ETRAN_FADEOUT: {
             data->tran_time -= platform_frametime();
-            
+
             if (data->tran_time < 0.0f) {
                 data->tran_effect = ETRAN_REMOVE;
                 data->tran_time = 0.0f;
             }
         }break;
-        
+
         default: break;
     }
 }
diff --git a/code/foundation/src/world/world.c b/code/foundation/src/world/world.c
index 2d8dafb..a05ae26 100644
--- a/code/foundation/src/world/world.c
+++ b/code/foundation/src/world/world.c
@@ -68,6 +68,8 @@ entity_view *world_build_entity_view(int64_t e) {
     if (ecs_get(world_ecs(), e, Device)) {
         Device const* dev = ecs_get(world_ecs(), e, Device);
         view.asset = dev->asset;
+        view.progress_active = dev->progress_active;
+        view.progress_value = dev->progress_value;
     }
 
     view.inside_vehicle = ecs_get(world_ecs(), e, IsInVehicle) != 0 ? true : false;
diff --git a/code/games/sandbox/src/renderer.c b/code/games/sandbox/src/renderer.c
index 45b7dc1..76ec259 100644
--- a/code/games/sandbox/src/renderer.c
+++ b/code/games/sandbox/src/renderer.c
@@ -132,6 +132,16 @@ void DEBUG_draw_entities_low(uint64_t key, entity_view * data) {
             float x = data->x - 32.f;
             float y = data->y - 32.f;
             DrawTexturePro(GetSpriteTexture2D(assets_find(data->asset)), ASSET_SRC_RECT(), ASSET_DST_RECT(x,y), (Vector2){0.5f,0.5f}, 0.0f, ALPHA(WHITE));
+
+            if (data->progress_active) {
+                float w = 64.f;
+                float h = 8.f;
+                float p = data->progress_value;
+                float x = data->x - w/2.f;
+                float y = data->y - 32.f - h;
+                DrawRectangleEco(x, y, w, h, ColorAlpha(BLACK, data->tran_time));
+                DrawRectangleEco(x, y, w*p, h, ColorAlpha(GREEN, data->tran_time));
+            }
         }break;
         default:break;
     }