Add camp fog

Assets/Materials/CampFog.mat

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+    - _GlossMapScale: 1
+    - _Glossiness: 0.5
+    - _GlossyReflections: 1
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+    - _FogColor: {r: 1, g: 1, b: 0.6084906, a: 1}

Assets/Materials/CampFog.mat.meta

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Assets/Scripts/CampfireFog.cs

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+using System.Collections;
+using System.Collections.Generic;
+using UnityEngine;
+
+public class CampfireFog : MonoBehaviour {
+
+    public GameObject Player;
+    public Material FogMaterial;
+
+    void Update() {
+        FogMaterial.SetFloat("_Transparency", Mathf.Min(Mathf.Sqrt(Mathf.Max((transform.position - Player.transform.position).magnitude - 15, 0)) / 100, 0.15f));
+    }
+}

Assets/Scripts/CampfireFog.cs.meta

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Assets/Shaders.meta

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Assets/Shaders/CampFog.shader

@@ -0,0 +1,72 @@
+// Upgrade NOTE: replaced 'mul(UNITY_MATRIX_MVP,*)' with 'UnityObjectToClipPos(*)'
+
+Shader "Unlit/CampFog"
+{
+    Properties
+    {
+         _FogColor ("Color", Color) = (1, 0, 0, 1)
+         _Intensity ("Intensity", Float) = 2.5
+         _Transparency ("Transparency", Float) = 1
+    }
+    SubShader
+    {
+
+        Tags { "Queue"="Transparent" "RenderType"="Transparent" }
+        LOD 100
+        ZWrite Off
+        Blend SrcAlpha OneMinusSrcAlpha
+
+        Pass
+        {
+            CGPROGRAM
+            #pragma vertex vert
+            #pragma fragment frag
+
+            #include "UnityCG.cginc"
+
+            struct appdata
+            {
+                float4 vertex : POSITION;
+            };
+
+            struct v2f
+            {
+                float4 vertex : SV_POSITION;
+                float4 screenpos : TEXCOORD1;
+                float4 center : TEXCOORD2;
+                float4 orig : TEXCOORD3;
+            };
+
+            float4 _FogColor;
+            float _Intensity;
+            float _Transparency;
+
+            v2f vert (appdata v)
+            {
+                v2f o;
+                o.vertex = UnityObjectToClipPos (v.vertex);
+                o.orig = v.vertex;
+                o.screenpos = ComputeScreenPos(o.vertex);
+                o.center = ComputeScreenPos (UnityObjectToClipPos(fixed3(0, 0, 0)));
+                return o;
+            }
+
+            fixed4 frag (v2f i) : SV_Target
+            {
+                float2 pos = (i.screenpos.xy/i.screenpos.w);
+                float2 center = (i.center.xy/i.center.w);
+                float2 distance = center - pos;
+                if (_ScreenParams.y > _ScreenParams.x) {
+                    distance.y /= (_ScreenParams.x / _ScreenParams.y);
+                } else {
+                    distance.x /= (_ScreenParams.y / _ScreenParams.x);
+                }
+                float value = length(distance) / length(unity_ObjectToWorld[0].xyz);
+                value = 1 - value * i.center.w * _Intensity;
+                fixed4 col = fixed4(_FogColor.xyz * value, value * _Transparency);
+                return col;
+            }
+            ENDCG
+        }
+    }
+}

Assets/Shaders/CampFog.shader.meta

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