diff --git a/Assets/Materials/transparent.mat b/Assets/Materials/transparent.mat
new file mode 100644
index 0000000..7bcc458
--- /dev/null
+++ b/Assets/Materials/transparent.mat
@@ -0,0 +1,91 @@
+%YAML 1.1
+%TAG !u! tag:unity3d.com,2011:
+--- !u!21 &2100000
+Material:
+  serializedVersion: 8
+  m_ObjectHideFlags: 0
+  m_CorrespondingSourceObject: {fileID: 0}
+  m_PrefabInstance: {fileID: 0}
+  m_PrefabAsset: {fileID: 0}
+  m_Name: transparent
+  m_Shader: {fileID: 46, guid: 0000000000000000f000000000000000, type: 0}
+  m_Parent: {fileID: 0}
+  m_ModifiedSerializedProperties: 0
+  m_ValidKeywords:
+  - _ALPHAPREMULTIPLY_ON
+  m_InvalidKeywords: []
+  m_LightmapFlags: 4
+  m_EnableInstancingVariants: 0
+  m_DoubleSidedGI: 0
+  m_CustomRenderQueue: 3000
+  stringTagMap:
+    RenderType: Transparent
+  disabledShaderPasses: []
+  m_LockedProperties: 
+  m_SavedProperties:
+    serializedVersion: 3
+    m_TexEnvs:
+    - _BumpMap:
+        m_Texture: {fileID: 0}
+        m_Scale: {x: 1, y: 1}
+        m_Offset: {x: 0, y: 0}
+    - _DetailAlbedoMap:
+        m_Texture: {fileID: 0}
+        m_Scale: {x: 1, y: 1}
+        m_Offset: {x: 0, y: 0}
+    - _DetailMask:
+        m_Texture: {fileID: 0}
+        m_Scale: {x: 1, y: 1}
+        m_Offset: {x: 0, y: 0}
+    - _DetailNormalMap:
+        m_Texture: {fileID: 0}
+        m_Scale: {x: 1, y: 1}
+        m_Offset: {x: 0, y: 0}
+    - _EmissionMap:
+        m_Texture: {fileID: 0}
+        m_Scale: {x: 0.061, y: 0.061}
+        m_Offset: {x: 0, y: 0}
+    - _MainTex:
+        m_Texture: {fileID: 2800000, guid: 4e76002f02c7e8c4290fb7bf8cb0fdc1, type: 3}
+        m_Scale: {x: 0.061, y: 0.061}
+        m_Offset: {x: 0, y: 0}
+    - _MetallicGlossMap:
+        m_Texture: {fileID: 0}
+        m_Scale: {x: 1, y: 1}
+        m_Offset: {x: 0, y: 0}
+    - _OcclusionMap:
+        m_Texture: {fileID: 0}
+        m_Scale: {x: 1, y: 1}
+        m_Offset: {x: 0, y: 0}
+    - _ParallaxMap:
+        m_Texture: {fileID: 0}
+        m_Scale: {x: 1, y: 1}
+        m_Offset: {x: 0, y: 0}
+    - _SpecGlossMap:
+        m_Texture: {fileID: 0}
+        m_Scale: {x: 1, y: 1}
+        m_Offset: {x: 0, y: 0}
+    m_Ints: []
+    m_Floats:
+    - _BumpScale: 1
+    - _Cutoff: 0.5
+    - _DetailNormalMapScale: 1
+    - _DstBlend: 10
+    - _GlossMapScale: 1
+    - _Glossiness: 0
+    - _GlossyReflections: 1
+    - _Metallic: 0
+    - _Mode: 3
+    - _OcclusionStrength: 1
+    - _Parallax: 0.02
+    - _Shininess: 0.078125
+    - _SmoothnessTextureChannel: 0
+    - _SpecularHighlights: 1
+    - _SrcBlend: 1
+    - _UVSec: 0
+    - _ZWrite: 0
+    m_Colors:
+    - _Color: {r: 1, g: 0.81428593, b: 0.4386791, a: 0.5294118}
+    - _EmissionColor: {r: 0, g: 0, b: 0, a: 1}
+    - _SpecColor: {r: 0.19999996, g: 0.19999996, b: 0.19999996, a: 1}
+  m_BuildTextureStacks: []
diff --git a/Assets/Materials/transparent.mat.meta b/Assets/Materials/transparent.mat.meta
new file mode 100644
index 0000000..0e15d54
--- /dev/null
+++ b/Assets/Materials/transparent.mat.meta
@@ -0,0 +1,8 @@
+fileFormatVersion: 2
+guid: 49c810880ec619a46949d4462ccf07b9
+NativeFormatImporter:
+  externalObjects: {}
+  mainObjectFileID: 2100000
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 
diff --git a/Assets/Prefabs/sliding_crane.prefab b/Assets/Prefabs/sliding_crane.prefab
index de44576..f14124d 100644
--- a/Assets/Prefabs/sliding_crane.prefab
+++ b/Assets/Prefabs/sliding_crane.prefab
@@ -267,9 +267,9 @@ MonoBehaviour:
     accel: 0
     braking: 0
   heightMotion:
-    maxSpeed: 1
-    acceleration: 1
-    brakingAcceleration: 0
+    maxSpeed: 0.5
+    acceleration: 0.5
+    brakingAcceleration: 0.5
     progress: 0
     velocity: 0
     accel: 0
@@ -280,7 +280,7 @@ MonoBehaviour:
   xRange: 4.5
   heightRange: 10
   heightMax: -0.7
-  heightMin: -8.5
+  heightMin: -7.5
   targetTransform: {fileID: 0}
   targetPoint: {x: 0, y: 0, z: 0}
   cradleTransform: {fileID: 6812918532662551388}
diff --git a/Assets/Scenes/Main.unity b/Assets/Scenes/Main.unity
index 236ae92..74376c4 100644
--- a/Assets/Scenes/Main.unity
+++ b/Assets/Scenes/Main.unity
@@ -22408,7 +22408,7 @@ MonoBehaviour:
   m_Name: 
   m_EditorClassIdentifier: 
   Objectives: []
-  CurrentStage: 0
+  CurrentStage: 4
 --- !u!4 &1503113266
 Transform:
   m_ObjectHideFlags: 0
diff --git a/Assets/Scenes/test_crane.unity b/Assets/Scenes/test_crane.unity
new file mode 100644
index 0000000..aeb04c9
--- /dev/null
+++ b/Assets/Scenes/test_crane.unity
@@ -0,0 +1,772 @@
+%YAML 1.1
+%TAG !u! tag:unity3d.com,2011:
+--- !u!29 &1
+OcclusionCullingSettings:
+  m_ObjectHideFlags: 0
+  serializedVersion: 2
+  m_OcclusionBakeSettings:
+    smallestOccluder: 5
+    smallestHole: 0.25
+    backfaceThreshold: 100
+  m_SceneGUID: 00000000000000000000000000000000
+  m_OcclusionCullingData: {fileID: 0}
+--- !u!104 &2
+RenderSettings:
+  m_ObjectHideFlags: 0
+  serializedVersion: 9
+  m_Fog: 0
+  m_FogColor: {r: 0.5, g: 0.5, b: 0.5, a: 1}
+  m_FogMode: 3
+  m_FogDensity: 0.01
+  m_LinearFogStart: 0
+  m_LinearFogEnd: 300
+  m_AmbientSkyColor: {r: 0.212, g: 0.227, b: 0.259, a: 1}
+  m_AmbientEquatorColor: {r: 0.114, g: 0.125, b: 0.133, a: 1}
+  m_AmbientGroundColor: {r: 0.047, g: 0.043, b: 0.035, a: 1}
+  m_AmbientIntensity: 1
+  m_AmbientMode: 0
+  m_SubtractiveShadowColor: {r: 0.42, g: 0.478, b: 0.627, a: 1}
+  m_SkyboxMaterial: {fileID: 10304, guid: 0000000000000000f000000000000000, type: 0}
+  m_HaloStrength: 0.5
+  m_FlareStrength: 1
+  m_FlareFadeSpeed: 3
+  m_HaloTexture: {fileID: 0}
+  m_SpotCookie: {fileID: 10001, guid: 0000000000000000e000000000000000, type: 0}
+  m_DefaultReflectionMode: 0
+  m_DefaultReflectionResolution: 128
+  m_ReflectionBounces: 1
+  m_ReflectionIntensity: 1
+  m_CustomReflection: {fileID: 0}
+  m_Sun: {fileID: 0}
+  m_UseRadianceAmbientProbe: 0
+--- !u!157 &3
+LightmapSettings:
+  m_ObjectHideFlags: 0
+  serializedVersion: 12
+  m_GIWorkflowMode: 1
+  m_GISettings:
+    serializedVersion: 2
+    m_BounceScale: 1
+    m_IndirectOutputScale: 1
+    m_AlbedoBoost: 1
+    m_EnvironmentLightingMode: 0
+    m_EnableBakedLightmaps: 1
+    m_EnableRealtimeLightmaps: 0
+  m_LightmapEditorSettings:
+    serializedVersion: 12
+    m_Resolution: 2
+    m_BakeResolution: 40
+    m_AtlasSize: 1024
+    m_AO: 0
+    m_AOMaxDistance: 1
+    m_CompAOExponent: 1
+    m_CompAOExponentDirect: 0
+    m_ExtractAmbientOcclusion: 0
+    m_Padding: 2
+    m_LightmapParameters: {fileID: 0}
+    m_LightmapsBakeMode: 1
+    m_TextureCompression: 1
+    m_FinalGather: 0
+    m_FinalGatherFiltering: 1
+    m_FinalGatherRayCount: 256
+    m_ReflectionCompression: 2
+    m_MixedBakeMode: 2
+    m_BakeBackend: 1
+    m_PVRSampling: 1
+    m_PVRDirectSampleCount: 32
+    m_PVRSampleCount: 512
+    m_PVRBounces: 2
+    m_PVREnvironmentSampleCount: 256
+    m_PVREnvironmentReferencePointCount: 2048
+    m_PVRFilteringMode: 1
+    m_PVRDenoiserTypeDirect: 1
+    m_PVRDenoiserTypeIndirect: 1
+    m_PVRDenoiserTypeAO: 1
+    m_PVRFilterTypeDirect: 0
+    m_PVRFilterTypeIndirect: 0
+    m_PVRFilterTypeAO: 0
+    m_PVREnvironmentMIS: 1
+    m_PVRCulling: 1
+    m_PVRFilteringGaussRadiusDirect: 1
+    m_PVRFilteringGaussRadiusIndirect: 5
+    m_PVRFilteringGaussRadiusAO: 2
+    m_PVRFilteringAtrousPositionSigmaDirect: 0.5
+    m_PVRFilteringAtrousPositionSigmaIndirect: 2
+    m_PVRFilteringAtrousPositionSigmaAO: 1
+    m_ExportTrainingData: 0
+    m_TrainingDataDestination: TrainingData
+    m_LightProbeSampleCountMultiplier: 4
+  m_LightingDataAsset: {fileID: 0}
+  m_LightingSettings: {fileID: 0}
+--- !u!196 &4
+NavMeshSettings:
+  serializedVersion: 2
+  m_ObjectHideFlags: 0
+  m_BuildSettings:
+    serializedVersion: 3
+    agentTypeID: 0
+    agentRadius: 0.5
+    agentHeight: 2
+    agentSlope: 45
+    agentClimb: 0.4
+    ledgeDropHeight: 0
+    maxJumpAcrossDistance: 0
+    minRegionArea: 2
+    manualCellSize: 0
+    cellSize: 0.16666667
+    manualTileSize: 0
+    tileSize: 256
+    buildHeightMesh: 0
+    maxJobWorkers: 0
+    preserveTilesOutsideBounds: 0
+    debug:
+      m_Flags: 0
+  m_NavMeshData: {fileID: 0}
+--- !u!1 &108199368
+GameObject:
+  m_ObjectHideFlags: 0
+  m_CorrespondingSourceObject: {fileID: 0}
+  m_PrefabInstance: {fileID: 0}
+  m_PrefabAsset: {fileID: 0}
+  serializedVersion: 6
+  m_Component:
+  - component: {fileID: 108199373}
+  - component: {fileID: 108199372}
+  - component: {fileID: 108199371}
+  - component: {fileID: 108199370}
+  - component: {fileID: 108199369}
+  m_Layer: 0
+  m_Name: Cube
+  m_TagString: Untagged
+  m_Icon: {fileID: 0}
+  m_NavMeshLayer: 0
+  m_StaticEditorFlags: 0
+  m_IsActive: 1
+--- !u!114 &108199369
+MonoBehaviour:
+  m_ObjectHideFlags: 0
+  m_CorrespondingSourceObject: {fileID: 0}
+  m_PrefabInstance: {fileID: 0}
+  m_PrefabAsset: {fileID: 0}
+  m_GameObject: {fileID: 108199368}
+  m_Enabled: 1
+  m_EditorHideFlags: 0
+  m_Script: {fileID: 11500000, guid: 3d4053c90fd858e40a9093edff6b83c7, type: 3}
+  m_Name: 
+  m_EditorClassIdentifier: 
+  onEnterEvent:
+    m_PersistentCalls:
+      m_Calls:
+      - m_Target: {fileID: 1847617939}
+        m_TargetAssemblyTypeName: CranePickDrop, Assembly-CSharp
+        m_MethodName: OnTriggerEnterSignalReceived
+        m_Mode: 2
+        m_Arguments:
+          m_ObjectArgument: {fileID: 108199369}
+          m_ObjectArgumentAssemblyTypeName: EnterTriggerSender, Assembly-CSharp
+          m_IntArgument: 0
+          m_FloatArgument: 0
+          m_StringArgument: 
+          m_BoolArgument: 0
+        m_CallState: 2
+  onExitEvent:
+    m_PersistentCalls:
+      m_Calls:
+      - m_Target: {fileID: 1847617939}
+        m_TargetAssemblyTypeName: CranePickDrop, Assembly-CSharp
+        m_MethodName: OnTriggerExitSignalReceived
+        m_Mode: 2
+        m_Arguments:
+          m_ObjectArgument: {fileID: 108199369}
+          m_ObjectArgumentAssemblyTypeName: EnterTriggerSender, Assembly-CSharp
+          m_IntArgument: 0
+          m_FloatArgument: 0
+          m_StringArgument: 
+          m_BoolArgument: 0
+        m_CallState: 2
+  triggeredCollider: {fileID: 0}
+--- !u!65 &108199370
+BoxCollider:
+  m_ObjectHideFlags: 0
+  m_CorrespondingSourceObject: {fileID: 0}
+  m_PrefabInstance: {fileID: 0}
+  m_PrefabAsset: {fileID: 0}
+  m_GameObject: {fileID: 108199368}
+  m_Material: {fileID: 0}
+  m_IncludeLayers:
+    serializedVersion: 2
+    m_Bits: 0
+  m_ExcludeLayers:
+    serializedVersion: 2
+    m_Bits: 0
+  m_LayerOverridePriority: 0
+  m_IsTrigger: 1
+  m_ProvidesContacts: 0
+  m_Enabled: 1
+  serializedVersion: 3
+  m_Size: {x: 1, y: 1, z: 1}
+  m_Center: {x: 0, y: 0, z: 0}
+--- !u!23 &108199371
+MeshRenderer:
+  m_ObjectHideFlags: 0
+  m_CorrespondingSourceObject: {fileID: 0}
+  m_PrefabInstance: {fileID: 0}
+  m_PrefabAsset: {fileID: 0}
+  m_GameObject: {fileID: 108199368}
+  m_Enabled: 1
+  m_CastShadows: 1
+  m_ReceiveShadows: 1
+  m_DynamicOccludee: 1
+  m_StaticShadowCaster: 0
+  m_MotionVectors: 1
+  m_LightProbeUsage: 1
+  m_ReflectionProbeUsage: 1
+  m_RayTracingMode: 2
+  m_RayTraceProcedural: 0
+  m_RenderingLayerMask: 1
+  m_RendererPriority: 0
+  m_Materials:
+  - {fileID: 2100000, guid: 49c810880ec619a46949d4462ccf07b9, type: 2}
+  m_StaticBatchInfo:
+    firstSubMesh: 0
+    subMeshCount: 0
+  m_StaticBatchRoot: {fileID: 0}
+  m_ProbeAnchor: {fileID: 0}
+  m_LightProbeVolumeOverride: {fileID: 0}
+  m_ScaleInLightmap: 1
+  m_ReceiveGI: 1
+  m_PreserveUVs: 0
+  m_IgnoreNormalsForChartDetection: 0
+  m_ImportantGI: 0
+  m_StitchLightmapSeams: 1
+  m_SelectedEditorRenderState: 3
+  m_MinimumChartSize: 4
+  m_AutoUVMaxDistance: 0.5
+  m_AutoUVMaxAngle: 89
+  m_LightmapParameters: {fileID: 0}
+  m_SortingLayerID: 0
+  m_SortingLayer: 0
+  m_SortingOrder: 0
+  m_AdditionalVertexStreams: {fileID: 0}
+--- !u!33 &108199372
+MeshFilter:
+  m_ObjectHideFlags: 0
+  m_CorrespondingSourceObject: {fileID: 0}
+  m_PrefabInstance: {fileID: 0}
+  m_PrefabAsset: {fileID: 0}
+  m_GameObject: {fileID: 108199368}
+  m_Mesh: {fileID: 10202, guid: 0000000000000000e000000000000000, type: 0}
+--- !u!4 &108199373
+Transform:
+  m_ObjectHideFlags: 0
+  m_CorrespondingSourceObject: {fileID: 0}
+  m_PrefabInstance: {fileID: 0}
+  m_PrefabAsset: {fileID: 0}
+  m_GameObject: {fileID: 108199368}
+  serializedVersion: 2
+  m_LocalRotation: {x: 0, y: 0, z: 0, w: 1}
+  m_LocalPosition: {x: 5.34, y: 2.1, z: 20.54}
+  m_LocalScale: {x: 3.9816, y: 3.9816, z: 3.9816}
+  m_ConstrainProportionsScale: 0
+  m_Children: []
+  m_Father: {fileID: 0}
+  m_LocalEulerAnglesHint: {x: 0, y: 0, z: 0}
+--- !u!1 &592458002
+GameObject:
+  m_ObjectHideFlags: 0
+  m_CorrespondingSourceObject: {fileID: 0}
+  m_PrefabInstance: {fileID: 0}
+  m_PrefabAsset: {fileID: 0}
+  serializedVersion: 6
+  m_Component:
+  - component: {fileID: 592458005}
+  - component: {fileID: 592458004}
+  - component: {fileID: 592458003}
+  m_Layer: 0
+  m_Name: Camera
+  m_TagString: Untagged
+  m_Icon: {fileID: 0}
+  m_NavMeshLayer: 0
+  m_StaticEditorFlags: 0
+  m_IsActive: 1
+--- !u!81 &592458003
+AudioListener:
+  m_ObjectHideFlags: 0
+  m_CorrespondingSourceObject: {fileID: 0}
+  m_PrefabInstance: {fileID: 0}
+  m_PrefabAsset: {fileID: 0}
+  m_GameObject: {fileID: 592458002}
+  m_Enabled: 1
+--- !u!20 &592458004
+Camera:
+  m_ObjectHideFlags: 0
+  m_CorrespondingSourceObject: {fileID: 0}
+  m_PrefabInstance: {fileID: 0}
+  m_PrefabAsset: {fileID: 0}
+  m_GameObject: {fileID: 592458002}
+  m_Enabled: 1
+  serializedVersion: 2
+  m_ClearFlags: 1
+  m_BackGroundColor: {r: 0.19215687, g: 0.3019608, b: 0.4745098, a: 0}
+  m_projectionMatrixMode: 1
+  m_GateFitMode: 2
+  m_FOVAxisMode: 0
+  m_Iso: 200
+  m_ShutterSpeed: 0.005
+  m_Aperture: 16
+  m_FocusDistance: 10
+  m_FocalLength: 50
+  m_BladeCount: 5
+  m_Curvature: {x: 2, y: 11}
+  m_BarrelClipping: 0.25
+  m_Anamorphism: 0
+  m_SensorSize: {x: 36, y: 24}
+  m_LensShift: {x: 0, y: 0}
+  m_NormalizedViewPortRect:
+    serializedVersion: 2
+    x: 0
+    y: 0
+    width: 1
+    height: 1
+  near clip plane: 0.3
+  far clip plane: 1000
+  field of view: 60
+  orthographic: 0
+  orthographic size: 5
+  m_Depth: 0
+  m_CullingMask:
+    serializedVersion: 2
+    m_Bits: 4294967295
+  m_RenderingPath: -1
+  m_TargetTexture: {fileID: 0}
+  m_TargetDisplay: 0
+  m_TargetEye: 3
+  m_HDR: 1
+  m_AllowMSAA: 1
+  m_AllowDynamicResolution: 0
+  m_ForceIntoRT: 0
+  m_OcclusionCulling: 1
+  m_StereoConvergence: 10
+  m_StereoSeparation: 0.022
+--- !u!4 &592458005
+Transform:
+  m_ObjectHideFlags: 0
+  m_CorrespondingSourceObject: {fileID: 0}
+  m_PrefabInstance: {fileID: 0}
+  m_PrefabAsset: {fileID: 0}
+  m_GameObject: {fileID: 592458002}
+  serializedVersion: 2
+  m_LocalRotation: {x: 0, y: 0, z: 0, w: 1}
+  m_LocalPosition: {x: 78.3779, y: -51.76418, z: -42.864254}
+  m_LocalScale: {x: 1, y: 1, z: 1}
+  m_ConstrainProportionsScale: 0
+  m_Children: []
+  m_Father: {fileID: 0}
+  m_LocalEulerAnglesHint: {x: 0, y: 0, z: 0}
+--- !u!1 &1228306005
+GameObject:
+  m_ObjectHideFlags: 0
+  m_CorrespondingSourceObject: {fileID: 0}
+  m_PrefabInstance: {fileID: 0}
+  m_PrefabAsset: {fileID: 0}
+  serializedVersion: 6
+  m_Component:
+  - component: {fileID: 1228306006}
+  m_Layer: 0
+  m_Name: Level
+  m_TagString: Untagged
+  m_Icon: {fileID: 0}
+  m_NavMeshLayer: 0
+  m_StaticEditorFlags: 0
+  m_IsActive: 1
+--- !u!4 &1228306006
+Transform:
+  m_ObjectHideFlags: 0
+  m_CorrespondingSourceObject: {fileID: 0}
+  m_PrefabInstance: {fileID: 0}
+  m_PrefabAsset: {fileID: 0}
+  m_GameObject: {fileID: 1228306005}
+  serializedVersion: 2
+  m_LocalRotation: {x: 0, y: 0, z: 0, w: 1}
+  m_LocalPosition: {x: 0, y: 0, z: 0}
+  m_LocalScale: {x: 1, y: 1, z: 1}
+  m_ConstrainProportionsScale: 0
+  m_Children:
+  - {fileID: 1325749538}
+  - {fileID: 1409510905}
+  m_Father: {fileID: 0}
+  m_LocalEulerAnglesHint: {x: 0, y: 0, z: 0}
+--- !u!1 &1325749534
+GameObject:
+  m_ObjectHideFlags: 0
+  m_CorrespondingSourceObject: {fileID: 0}
+  m_PrefabInstance: {fileID: 0}
+  m_PrefabAsset: {fileID: 0}
+  serializedVersion: 6
+  m_Component:
+  - component: {fileID: 1325749538}
+  - component: {fileID: 1325749537}
+  - component: {fileID: 1325749536}
+  - component: {fileID: 1325749535}
+  - component: {fileID: 1325749539}
+  m_Layer: 0
+  m_Name: Floor
+  m_TagString: Untagged
+  m_Icon: {fileID: 0}
+  m_NavMeshLayer: 0
+  m_StaticEditorFlags: 0
+  m_IsActive: 1
+--- !u!65 &1325749535
+BoxCollider:
+  m_ObjectHideFlags: 0
+  m_CorrespondingSourceObject: {fileID: 0}
+  m_PrefabInstance: {fileID: 0}
+  m_PrefabAsset: {fileID: 0}
+  m_GameObject: {fileID: 1325749534}
+  m_Material: {fileID: 0}
+  m_IncludeLayers:
+    serializedVersion: 2
+    m_Bits: 0
+  m_ExcludeLayers:
+    serializedVersion: 2
+    m_Bits: 0
+  m_LayerOverridePriority: 0
+  m_IsTrigger: 0
+  m_ProvidesContacts: 0
+  m_Enabled: 1
+  serializedVersion: 3
+  m_Size: {x: 1, y: 1, z: 1}
+  m_Center: {x: 0, y: 0, z: 0}
+--- !u!23 &1325749536
+MeshRenderer:
+  m_ObjectHideFlags: 0
+  m_CorrespondingSourceObject: {fileID: 0}
+  m_PrefabInstance: {fileID: 0}
+  m_PrefabAsset: {fileID: 0}
+  m_GameObject: {fileID: 1325749534}
+  m_Enabled: 1
+  m_CastShadows: 1
+  m_ReceiveShadows: 1
+  m_DynamicOccludee: 1
+  m_StaticShadowCaster: 0
+  m_MotionVectors: 1
+  m_LightProbeUsage: 1
+  m_ReflectionProbeUsage: 1
+  m_RayTracingMode: 2
+  m_RayTraceProcedural: 0
+  m_RenderingLayerMask: 1
+  m_RendererPriority: 0
+  m_Materials:
+  - {fileID: 2100000, guid: 446234516a3ad9f4688247a490462c6e, type: 2}
+  m_StaticBatchInfo:
+    firstSubMesh: 0
+    subMeshCount: 0
+  m_StaticBatchRoot: {fileID: 0}
+  m_ProbeAnchor: {fileID: 0}
+  m_LightProbeVolumeOverride: {fileID: 0}
+  m_ScaleInLightmap: 1
+  m_ReceiveGI: 1
+  m_PreserveUVs: 0
+  m_IgnoreNormalsForChartDetection: 0
+  m_ImportantGI: 0
+  m_StitchLightmapSeams: 1
+  m_SelectedEditorRenderState: 3
+  m_MinimumChartSize: 4
+  m_AutoUVMaxDistance: 0.5
+  m_AutoUVMaxAngle: 89
+  m_LightmapParameters: {fileID: 0}
+  m_SortingLayerID: 0
+  m_SortingLayer: 0
+  m_SortingOrder: 0
+  m_AdditionalVertexStreams: {fileID: 0}
+--- !u!33 &1325749537
+MeshFilter:
+  m_ObjectHideFlags: 0
+  m_CorrespondingSourceObject: {fileID: 0}
+  m_PrefabInstance: {fileID: 0}
+  m_PrefabAsset: {fileID: 0}
+  m_GameObject: {fileID: 1325749534}
+  m_Mesh: {fileID: 10202, guid: 0000000000000000e000000000000000, type: 0}
+--- !u!4 &1325749538
+Transform:
+  m_ObjectHideFlags: 0
+  m_CorrespondingSourceObject: {fileID: 0}
+  m_PrefabInstance: {fileID: 0}
+  m_PrefabAsset: {fileID: 0}
+  m_GameObject: {fileID: 1325749534}
+  serializedVersion: 2
+  m_LocalRotation: {x: -0, y: -0, z: -0, w: 1}
+  m_LocalPosition: {x: 0, y: 0.125, z: 0}
+  m_LocalScale: {x: 100, y: 1, z: 100}
+  m_ConstrainProportionsScale: 0
+  m_Children: []
+  m_Father: {fileID: 1228306006}
+  m_LocalEulerAnglesHint: {x: 0, y: 0, z: 0}
+--- !u!114 &1325749539
+MonoBehaviour:
+  m_ObjectHideFlags: 0
+  m_CorrespondingSourceObject: {fileID: 0}
+  m_PrefabInstance: {fileID: 0}
+  m_PrefabAsset: {fileID: 0}
+  m_GameObject: {fileID: 1325749534}
+  m_Enabled: 1
+  m_EditorHideFlags: 0
+  m_Script: {fileID: 11500000, guid: af3e57595c24e7b4dbb6f7f44db23525, type: 3}
+  m_Name: 
+  m_EditorClassIdentifier: 
+  Size:
+    x: 400
+    y: 4
+    z: 400
+  CenterOffset:
+    x: 0
+    y: -0.125
+    z: 0
+  cachedSize:
+    x: 400
+    y: 4
+    z: 400
+  cachedOffset:
+    x: 0
+    y: -0.125
+    z: 0
+--- !u!1 &1409510904
+GameObject:
+  m_ObjectHideFlags: 0
+  m_CorrespondingSourceObject: {fileID: 0}
+  m_PrefabInstance: {fileID: 0}
+  m_PrefabAsset: {fileID: 0}
+  serializedVersion: 6
+  m_Component:
+  - component: {fileID: 1409510905}
+  - component: {fileID: 1409510906}
+  m_Layer: 0
+  m_Name: Directional Light
+  m_TagString: Untagged
+  m_Icon: {fileID: 0}
+  m_NavMeshLayer: 0
+  m_StaticEditorFlags: 0
+  m_IsActive: 1
+--- !u!4 &1409510905
+Transform:
+  m_ObjectHideFlags: 0
+  m_CorrespondingSourceObject: {fileID: 0}
+  m_PrefabInstance: {fileID: 0}
+  m_PrefabAsset: {fileID: 0}
+  m_GameObject: {fileID: 1409510904}
+  serializedVersion: 2
+  m_LocalRotation: {x: 0.40821788, y: -0.23456968, z: 0.10938163, w: 0.8754261}
+  m_LocalPosition: {x: 0, y: 3, z: 0}
+  m_LocalScale: {x: 1, y: 1, z: 1}
+  m_ConstrainProportionsScale: 0
+  m_Children: []
+  m_Father: {fileID: 1228306006}
+  m_LocalEulerAnglesHint: {x: 50, y: -30, z: 0}
+--- !u!108 &1409510906
+Light:
+  m_ObjectHideFlags: 0
+  m_CorrespondingSourceObject: {fileID: 0}
+  m_PrefabInstance: {fileID: 0}
+  m_PrefabAsset: {fileID: 0}
+  m_GameObject: {fileID: 1409510904}
+  m_Enabled: 1
+  serializedVersion: 10
+  m_Type: 1
+  m_Shape: 0
+  m_Color: {r: 1, g: 0.95686275, b: 0.8392157, a: 1}
+  m_Intensity: 1
+  m_Range: 10
+  m_SpotAngle: 30
+  m_InnerSpotAngle: 21.80208
+  m_CookieSize: 10
+  m_Shadows:
+    m_Type: 2
+    m_Resolution: -1
+    m_CustomResolution: -1
+    m_Strength: 1
+    m_Bias: 0.05
+    m_NormalBias: 0.4
+    m_NearPlane: 0.2
+    m_CullingMatrixOverride:
+      e00: 1
+      e01: 0
+      e02: 0
+      e03: 0
+      e10: 0
+      e11: 1
+      e12: 0
+      e13: 0
+      e20: 0
+      e21: 0
+      e22: 1
+      e23: 0
+      e30: 0
+      e31: 0
+      e32: 0
+      e33: 1
+    m_UseCullingMatrixOverride: 0
+  m_Cookie: {fileID: 0}
+  m_DrawHalo: 0
+  m_Flare: {fileID: 0}
+  m_RenderMode: 0
+  m_CullingMask:
+    serializedVersion: 2
+    m_Bits: 4294967295
+  m_RenderingLayerMask: 1
+  m_Lightmapping: 1
+  m_LightShadowCasterMode: 0
+  m_AreaSize: {x: 1, y: 1}
+  m_BounceIntensity: 1
+  m_ColorTemperature: 6570
+  m_UseColorTemperature: 0
+  m_BoundingSphereOverride: {x: 0, y: 0, z: 0, w: 0}
+  m_UseBoundingSphereOverride: 0
+  m_UseViewFrustumForShadowCasterCull: 1
+  m_ShadowRadius: 0
+  m_ShadowAngle: 0
+--- !u!1001 &1764584009
+PrefabInstance:
+  m_ObjectHideFlags: 0
+  serializedVersion: 2
+  m_Modification:
+    serializedVersion: 3
+    m_TransformParent: {fileID: 0}
+    m_Modifications:
+    - target: {fileID: 6297052809674953331, guid: d5cbaa49bd379dc49b90d9c38f02bf80, type: 3}
+      propertyPath: m_LocalPosition.x
+      value: 5.7285233
+      objectReference: {fileID: 0}
+    - target: {fileID: 6297052809674953331, guid: d5cbaa49bd379dc49b90d9c38f02bf80, type: 3}
+      propertyPath: m_LocalPosition.y
+      value: 5.98
+      objectReference: {fileID: 0}
+    - target: {fileID: 6297052809674953331, guid: d5cbaa49bd379dc49b90d9c38f02bf80, type: 3}
+      propertyPath: m_LocalPosition.z
+      value: 20.749737
+      objectReference: {fileID: 0}
+    - target: {fileID: 6297052809674953331, guid: d5cbaa49bd379dc49b90d9c38f02bf80, type: 3}
+      propertyPath: m_LocalRotation.w
+      value: 1
+      objectReference: {fileID: 0}
+    - target: {fileID: 6297052809674953331, guid: d5cbaa49bd379dc49b90d9c38f02bf80, type: 3}
+      propertyPath: m_LocalRotation.x
+      value: 0
+      objectReference: {fileID: 0}
+    - target: {fileID: 6297052809674953331, guid: d5cbaa49bd379dc49b90d9c38f02bf80, type: 3}
+      propertyPath: m_LocalRotation.y
+      value: 0
+      objectReference: {fileID: 0}
+    - target: {fileID: 6297052809674953331, guid: d5cbaa49bd379dc49b90d9c38f02bf80, type: 3}
+      propertyPath: m_LocalRotation.z
+      value: 0
+      objectReference: {fileID: 0}
+    - target: {fileID: 6297052809674953331, guid: d5cbaa49bd379dc49b90d9c38f02bf80, type: 3}
+      propertyPath: m_LocalEulerAnglesHint.x
+      value: 0
+      objectReference: {fileID: 0}
+    - target: {fileID: 6297052809674953331, guid: d5cbaa49bd379dc49b90d9c38f02bf80, type: 3}
+      propertyPath: m_LocalEulerAnglesHint.y
+      value: 0
+      objectReference: {fileID: 0}
+    - target: {fileID: 6297052809674953331, guid: d5cbaa49bd379dc49b90d9c38f02bf80, type: 3}
+      propertyPath: m_LocalEulerAnglesHint.z
+      value: 0
+      objectReference: {fileID: 0}
+    - target: {fileID: 7947812480369148219, guid: d5cbaa49bd379dc49b90d9c38f02bf80, type: 3}
+      propertyPath: m_Name
+      value: Basic Torus
+      objectReference: {fileID: 0}
+    m_RemovedComponents: []
+    m_RemovedGameObjects: []
+    m_AddedGameObjects: []
+    m_AddedComponents: []
+  m_SourcePrefab: {fileID: 100100000, guid: d5cbaa49bd379dc49b90d9c38f02bf80, type: 3}
+--- !u!114 &1847617939 stripped
+MonoBehaviour:
+  m_CorrespondingSourceObject: {fileID: 5328903551856804412, guid: cdb590802e3f6bd4db6d5eddce994501, type: 3}
+  m_PrefabInstance: {fileID: 2041063257}
+  m_PrefabAsset: {fileID: 0}
+  m_GameObject: {fileID: 0}
+  m_Enabled: 1
+  m_EditorHideFlags: 0
+  m_Script: {fileID: 11500000, guid: ad97f65d702892042b008aaa97b9c17e, type: 3}
+  m_Name: 
+  m_EditorClassIdentifier: 
+--- !u!1001 &2041063257
+PrefabInstance:
+  m_ObjectHideFlags: 0
+  serializedVersion: 2
+  m_Modification:
+    serializedVersion: 3
+    m_TransformParent: {fileID: 0}
+    m_Modifications:
+    - target: {fileID: 3986187515445640859, guid: cdb590802e3f6bd4db6d5eddce994501, type: 3}
+      propertyPath: m_LocalPosition.y
+      value: -7
+      objectReference: {fileID: 0}
+    - target: {fileID: 4060506572131258815, guid: cdb590802e3f6bd4db6d5eddce994501, type: 3}
+      propertyPath: m_Name
+      value: sliding_crane
+      objectReference: {fileID: 0}
+    - target: {fileID: 5468670891441072218, guid: cdb590802e3f6bd4db6d5eddce994501, type: 3}
+      propertyPath: m_LinearLimit.limit
+      value: 1.5
+      objectReference: {fileID: 0}
+    - target: {fileID: 5575607870997596000, guid: cdb590802e3f6bd4db6d5eddce994501, type: 3}
+      propertyPath: m_LocalPosition.x
+      value: 5
+      objectReference: {fileID: 0}
+    - target: {fileID: 8361960510235702639, guid: cdb590802e3f6bd4db6d5eddce994501, type: 3}
+      propertyPath: m_LocalPosition.x
+      value: -0.25
+      objectReference: {fileID: 0}
+    - target: {fileID: 8361960510235702639, guid: cdb590802e3f6bd4db6d5eddce994501, type: 3}
+      propertyPath: m_LocalPosition.y
+      value: 0.9299998
+      objectReference: {fileID: 0}
+    - target: {fileID: 8361960510235702639, guid: cdb590802e3f6bd4db6d5eddce994501, type: 3}
+      propertyPath: m_LocalPosition.z
+      value: -19.75
+      objectReference: {fileID: 0}
+    - target: {fileID: 8361960510235702639, guid: cdb590802e3f6bd4db6d5eddce994501, type: 3}
+      propertyPath: m_LocalRotation.w
+      value: 1
+      objectReference: {fileID: 0}
+    - target: {fileID: 8361960510235702639, guid: cdb590802e3f6bd4db6d5eddce994501, type: 3}
+      propertyPath: m_LocalRotation.x
+      value: 0
+      objectReference: {fileID: 0}
+    - target: {fileID: 8361960510235702639, guid: cdb590802e3f6bd4db6d5eddce994501, type: 3}
+      propertyPath: m_LocalRotation.y
+      value: 0
+      objectReference: {fileID: 0}
+    - target: {fileID: 8361960510235702639, guid: cdb590802e3f6bd4db6d5eddce994501, type: 3}
+      propertyPath: m_LocalRotation.z
+      value: 0
+      objectReference: {fileID: 0}
+    - target: {fileID: 8361960510235702639, guid: cdb590802e3f6bd4db6d5eddce994501, type: 3}
+      propertyPath: m_LocalEulerAnglesHint.x
+      value: 0
+      objectReference: {fileID: 0}
+    - target: {fileID: 8361960510235702639, guid: cdb590802e3f6bd4db6d5eddce994501, type: 3}
+      propertyPath: m_LocalEulerAnglesHint.y
+      value: 0
+      objectReference: {fileID: 0}
+    - target: {fileID: 8361960510235702639, guid: cdb590802e3f6bd4db6d5eddce994501, type: 3}
+      propertyPath: m_LocalEulerAnglesHint.z
+      value: 0
+      objectReference: {fileID: 0}
+    m_RemovedComponents: []
+    m_RemovedGameObjects: []
+    m_AddedGameObjects: []
+    m_AddedComponents: []
+  m_SourcePrefab: {fileID: 100100000, guid: cdb590802e3f6bd4db6d5eddce994501, type: 3}
+--- !u!1660057539 &9223372036854775807
+SceneRoots:
+  m_ObjectHideFlags: 0
+  m_Roots:
+  - {fileID: 1228306006}
+  - {fileID: 2041063257}
+  - {fileID: 592458005}
+  - {fileID: 108199373}
+  - {fileID: 1764584009}
diff --git a/Assets/Scenes/test_crane.unity.meta b/Assets/Scenes/test_crane.unity.meta
new file mode 100644
index 0000000..a9f5d13
--- /dev/null
+++ b/Assets/Scenes/test_crane.unity.meta
@@ -0,0 +1,7 @@
+fileFormatVersion: 2
+guid: 412ddf432dadca64d9e98cda0df2331b
+DefaultImporter:
+  externalObjects: {}
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 
diff --git a/Assets/Scripts/CranePickDrop.cs b/Assets/Scripts/CranePickDrop.cs
index 5ba61c1..8609a39 100644
--- a/Assets/Scripts/CranePickDrop.cs
+++ b/Assets/Scripts/CranePickDrop.cs
@@ -18,6 +18,7 @@ public class CranePickDrop : MonoBehaviour
         Catching,
         WaitingToCatch,
         Tansporting,
+        WaitBeforeDrop,
         Finished,
     }
 
@@ -50,6 +51,7 @@ public class CranePickDrop : MonoBehaviour
     void Start()
     {
         magnetStrength = magnet.strength;
+        crane.heightMotion.AccelerateTo(1);
     }
 
     void Update()
@@ -64,6 +66,11 @@ public class CranePickDrop : MonoBehaviour
                 return;
             }
 
+            if (magnet.IsCloseToPlanar(handlingBody, 10f))
+            {
+                crane.heightMotion.AccelerateTo(0);
+            }
+
             if (magnet.IsCloseTo(handlingBody, 5f))
             {
                 magnet.strength = magnetStrength;
@@ -85,15 +92,32 @@ public class CranePickDrop : MonoBehaviour
             {
                 state = State.Tansporting;
                 crane.targetTransform = dropTarget;
+                crane.heightMotion.AccelerateTo(1);
             }
         }
 
         else if (state == State.Tansporting)
         {
-            if (magnet.IsCloseToPlanar(dropTarget))
+            if (magnet.IsCloseToPlanar(dropTarget, 10f))
+            {
+                crane.heightMotion.AccelerateTo(0);
+            }
+
+            if (magnet.IsCloseToPlanar(dropTarget, 3f))
+            {
+                state = State.WaitBeforeDrop;
+                timer = 3;
+            }
+        }
+        else if (state == State.WaitBeforeDrop)
+        {
+            timer -= Time.deltaTime;
+
+            if (timer < 0)
             {
                 magnet.strength = 0;
                 state = State.Idle;
+                crane.heightMotion.AccelerateTo(1);
             }
         }
     }