makes conveyors to use machine linking & refactors machine linking a bit (#2464)

* makes conveyors to use machine linking & refactors machine linking a bit

* nullable errors

* temp commit, starting work on construction

* working recipies & graphs

* fixes crash

* makes items gravitate towards the center when on a conveyor

* makes conveyors take bool signal too

* ignores components clientside

* default arm
entitymanager
maxtransmitters
unsubscribe methods

* twowayLEVER

* _

* componentreference
struct

* yaml run
leverDefinitelyNotCopiedFromGirderNoNoNo dies today :(

* nullable

* no divide by 0

* making sloth happy

* space gone - happy?

* final fix

* yes

* adds item to lathe

* conveyor item -> conveyor assembly

* technology

* reviews ADRESSED

* Update Content.Shared/GameObjects/Verbs/VerbUtility.cs

Co-authored-by: Paul <ritter.paul1+git@googlemail.com>
Co-authored-by: metalgearsloth <31366439+metalgearsloth@users.noreply.github.com>
Co-authored-by: Metal Gear Sloth <metalgearsloth@gmail.com>

Resources/Prototypes/Entities/Constructible/Power/lathe.yml

@@ -102,6 +102,7 @@
       - CableStack
       - Crowbar
       - Multitool
+      - ConveyorAssembly
   - type: UserInterface
     interfaces:
     - key: enum.LatheUiKey.Key

Resources/Prototypes/Entities/Constructible/Specific/Conveyor/constructionGraphs.yml

@@ -0,0 +1,57 @@
+- type: constructionGraph
+  id: ConveyorGraph
+  start: start
+  graph:
+    - node: start
+      edges:
+        - to: entity
+          steps:
+            - component: ConveyorAssembly
+              icon:
+                sprite: Constructible/Power/conveyor.rsi
+                state: conveyor_loose
+              name: conveyor belt assembly
+              doAfter: 2
+    - node: item
+      entity: ConveyorBeltAssembly
+      actions:
+        - !type:SetAnchor
+          value: false
+    - node: entity
+      entity: ConveyorBelt
+      actions:
+        - !type:SetAnchor
+          value: true
+        - !type:SnapToGrid
+          offset: Center
+      edges:
+        - to: item
+          steps:
+            - tool: Prying
+              doAfter: 3
+
+- type: constructionGraph
+  id: leverGraph
+  start: start
+  graph:
+  - node: start
+    actions:
+      - !type:SpawnPrototype
+        prototype: SteelSheet1
+        amount: 2
+      - !type:DeleteEntity {}
+    edges:
+      - to: lever
+        completed:
+          - !type:SnapToGrid {}
+        steps:
+          - material: Metal
+            amount: 2
+            doAfter: 1
+  - node: lever
+    entity: TwoWayLever
+    edges:
+      - to: start
+        steps:
+          - tool: Anchoring
+            doAfter: 1

Resources/Prototypes/Entities/Constructible/Specific/Conveyor/constructionRecipes.yml

@@ -0,0 +1,26 @@
+- type: construction
+  name: conveyor belt
+  id: conveyorbelt
+  graph: ConveyorGraph
+  startNode: start
+  targetNode: entity
+  category: Structures
+  description: A conveyor belt, commonly used to transport large numbers of items elsewhere quite quickly.
+  objectType: Structure
+  placementMode: SnapgridCenter
+  icon:
+    sprite: Constructible/Power/conveyor.rsi
+    state: conveyor_stopped_cw
+
+- type: construction
+  name: two-way lever
+  id: twowaylever
+  graph: leverGraph
+  startNode: start
+  targetNode: lever
+  category: Structures
+  description: A lever to control machines. It has 3 modes.
+  objectType: Structure
+  icon:
+    sprite: Constructible/Power/conveyor.rsi
+    state: switch-off

Resources/Prototypes/Entities/Constructible/Specific/Conveyor/conveyor.yml

@@ -25,7 +25,8 @@
     sprite: Constructible/Power/conveyor.rsi
     state: conveyor_started_cw
     drawdepth: FloorObjects
-
+  - type: SignalReceiver
+    maxTransmitters: 1
   - type: Conveyor
   - type: Appearance
     visuals:
@@ -33,26 +34,23 @@
       state_running: conveyor_started_cw
       state_stopped: conveyor_stopped_cw
       state_reversed: conveyor_started_cw_r
-      state_loose: conveyor_loose
   - type: PowerReceiver
+  - type: Construction
+    graph: ConveyorGraph
+    node: entity
 
 - type: entity
-  id: ConveyorSwitch
-  name: conveyor switch
-  description: A conveyor control switch.
+  id: ConveyorBeltAssembly
+  parent: BaseItem
+  name: conveyor belt
+  suffix: assembly
+  description: A conveyor belt assembly. Used to construct a conveyor belt.
   components:
-  - type: Clickable
-  - type: InteractionOutline
-  - type: Sprite
-    netsync: false
-    sprite: Constructible/Power/conveyor.rsi
-    state: switch-off
-
-  - type: ConveyorSwitch
-  - type: Appearance
-    visuals:
-      - type: ConveyorSwitchVisualizer
-        state_forward: switch-fwd
-        state_off: switch-off
-        state_reversed: switch-rev
-        state_loose: switch
+    - type: Sprite
+      netsync: false
+      sprite: Constructible/Power/conveyor.rsi
+      state: conveyor_loose
+    - type: ConveyorAssembly
+    - type: Construction
+      graph: ConveyorGraph
+      node: item

Resources/Prototypes/Entities/Constructible/Specific/Conveyor/twoWayLever.yml

@@ -0,0 +1,21 @@
+- type: entity
+  id: TwoWayLever
+  name: two way switch
+  description: A two way switch.
+  components:
+    - type: Clickable
+    - type: InteractionOutline
+    - type: Sprite
+      netsync: false
+      sprite: Constructible/Power/conveyor.rsi
+      state: switch-off
+    - type: TwoWayLever
+    - type: Appearance
+      visuals:
+        - type: TwoWayLeverVisualizer
+          state_forward: switch-fwd
+          state_off: switch-off
+          state_reversed: switch-rev
+    - type: Construction
+      graph: leverGraph
+      node: lever