Fixing lights and shadows

resources/shaders/night_fog_shadow_web.fragment

@@ -8,6 +8,8 @@ uniform int uPointLightCount;
 uniform vec3 uPointLightPos[4];
 uniform vec3 uPointLightDir[4];
 uniform vec3 uPointLightColor[4];
+uniform vec2 uPointLightWorldXZ[4];
+uniform vec2 uPointLightLimitXZ[4];
 uniform vec3 uAmbientColor;
 uniform vec3 uFogColor;
 
@@ -16,6 +18,7 @@ varying vec4 fragPosLightSpace;
 varying vec3 fragNormal;
 varying float fogDistance;
 varying vec3 fragViewPos;
+varying vec2 fragWorldXZ;
 
 const float SPOT_COS_OUTER = 0.7071;
 const float SPOT_COS_INNER = 0.82;
@@ -85,7 +88,11 @@ void main()
 		float atten = 1.0 / (1.0 + 0.35 * dist + 0.15 * dist * dist);
 		float diff  = hasNormal ? max(dot(N, lightDir), 0.0) : 1.0;
 
-		lighting += uPointLightColor[i] * diff * atten * spotAtten * (1.0 - shadow);
+		vec2 worldDelta = abs(fragWorldXZ - uPointLightWorldXZ[i]);
+		float rectX = 1.0 - smoothstep(uPointLightLimitXZ[i].x - 0.5, uPointLightLimitXZ[i].x + 0.5, worldDelta.x);
+		float rectY = 1.0 - smoothstep(uPointLightLimitXZ[i].y - 0.5, uPointLightLimitXZ[i].y + 0.5, worldDelta.y);
+
+		lighting += uPointLightColor[i] * diff * atten * spotAtten * rectX * rectY * (1.0 - shadow);
 	}
 
 	color.rgb *= lighting;