Add a lantern and a radiating light component (#1571)

* added a lantern

* Add A Lantern with radiating light

* Update meta.json

Added copyright information for lantern.rsi

Content.Client/GameObjects/Components/RadiatingLightComponent.cs

@@ -0,0 +1,46 @@
+using System;
+using Robust.Client.Animations;
+using Robust.Client.GameObjects;
+using Robust.Client.GameObjects.Components.Animations;
+using Robust.Shared.Animations;
+using Robust.Shared.GameObjects;
+using Robust.Shared.Maths;
+
+namespace Content.Client.GameObjects.Components
+{
+    [RegisterComponent]
+    public class RadiatingLightComponent : Component
+    {
+        public override string Name => "RadiatingLight";
+
+        protected override void Startup()
+        {
+            base.Startup();
+
+            var animation = new Animation
+            {
+                Length = TimeSpan.FromSeconds(4),
+                AnimationTracks =
+                {
+                    new AnimationTrackComponentProperty
+                    {
+                        ComponentType = typeof(PointLightComponent),
+                        InterpolationMode = AnimationInterpolationMode.Linear,
+                        Property = nameof(PointLightComponent.Radius),
+                        KeyFrames =
+                        {
+                            new AnimationTrackProperty.KeyFrame(3.0f, 0),
+                            new AnimationTrackProperty.KeyFrame(2.0f, 1),
+                            new AnimationTrackProperty.KeyFrame(3.0f, 2)
+                        }
+                    }
+                }
+            };
+
+            var playerComponent = Owner.EnsureComponent<AnimationPlayerComponent>();
+            playerComponent.Play(animation, "emergency");
+
+            playerComponent.AnimationCompleted += s => playerComponent.Play(animation, s);
+        }
+    }
+}

Resources/Prototypes/Entities/Objects/Tools/lantern.yml

@@ -0,0 +1,27 @@
+- type: entity
+  name: lantern
+  parent: BaseItem
+  id: lantern
+  description: The holy light guides the way
+  components:
+    - type: HandheldLight
+    - type: Sprite
+      sprite: Objects/Tools/lantern.rsi
+      layers:
+        - state: lantern
+        - state: lantern-on
+          shader: unshaded
+          visible: false
+    - type: Icon
+      sprite: Objects/Tools/lantern.rsi
+      state: lantern
+    - type: Item
+      sprite: Objects/Tools/lantern.rsi
+      HeldPrefix: off
+    - type: PointLight
+      enabled: false
+      radius: 3
+      energy: 2.5
+      color: "#FFC458"
+    - type: RadiatingLight
+    - type: LoopingSound

Resources/Textures/Objects/Tools/lantern.rsi/meta.json

@@ -0,0 +1,101 @@
+{
+    "version": 1,
+    "license": "CC BY-SA 3.0", 
+    "copyright": "Taken from https://github.com/tgstation/tgstation at commit 9bebd81ae0b0a7f952b59886a765c681205de31f",
+    "size": {
+        "x": 32,
+        "y": 32
+    },
+    "states": [
+        {
+            "name": "lantern",
+            "directions": 1,
+            "delays": [
+                [
+                    1.0
+                ]
+            ]
+        },
+        {
+            "name": "lantern-on",
+            "directions": 1,
+            "delays": [
+                [
+                    1.0
+                ]
+            ]
+        },
+        {
+            "name": "off-inhand-left",
+            "directions": 4,
+            "delays": [
+                [
+                    1
+                ],
+                [
+                    1
+                ],
+                [
+                    1
+                ],
+                [
+                    1
+                ]
+            ]
+        },
+        {
+            "name": "off-inhand-right",
+            "directions": 4,
+            "delays": [
+                [
+                    1
+                ],
+                [
+                    1
+                ],
+                [
+                    1
+                ],
+                [
+                    1
+                ]
+            ]
+        },
+        {
+            "name": "on-inhand-left",
+            "directions": 4,
+            "delays": [
+                [
+                    1
+                ],
+                [
+                    1
+                ],
+                [
+                    1
+                ],
+                [
+                    1
+                ]
+            ]
+        },
+        {
+            "name": "on-inhand-right",
+            "directions": 4,
+            "delays": [
+                [
+                    1
+                ],
+                [
+                    1
+                ],
+                [
+                    1
+                ],
+                [
+                    1
+                ]
+            ]
+        }
+    ]
+}