Update entity.cpp

Make lighting effect regular entites the same as multi-textured ones.

src/types/entity/entity.cpp

@@ -155,8 +155,10 @@ void Entity::render() {
         glTexCoordPointer(2, GL_FLOAT, 0, nullptr);
     }
 
-    if (!multiTexture)
+    if (!multiTexture) {
+        glTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_BLEND);
         getGeometry()->draw();
+    }
 
     if (multiTexture) {
         auto* multi = (MultiTexture*) getTexture();