Flag a component mutated after getting him

[IfnotFr]

Hi,

I had the case several times, I need to check one value from a component before editing values. It makes something very ugly : loading first time in read mode, and second time in mutate mode for flagging him modified.

const component = entity.getComponent(MyComponent)
if(component .something === true) {
    component = entity.getMutableComponent(MyComponent)
    component.foo = 'bar'
}

I think it can be cleaner to flag the component instead of loading it two times :

const component = entity.getComponent(MyComponent)
if(component.something === true) {
    component.setMutated() // or fireMutated, flagMutated, fireChange, or something else ...
    component.foo = 'bar'
}

I tried a PR but it looks the Component does not have any Entity property for firing up the event.