Add World.hasResource

[waynemwashuma]

Objective

Adds the ability to check if a resource exists in the ECS World.

Solution

The solution adds two methods to World to check for the existence of a resource without throwing an error if it doesn't exist. This is useful for conditional resource access and avoids the need for try-catch blocks.

• Added hasResource which checks by constructor type.
• Added hasResourceByTypeId which checks by internal type ID.
• Both methods handle resource aliases correctly, returning true only if the aliased resource exists.

Showcase

Here’s how to use the new methods:

const world = new World();
world.setResource(new TestResource());

// Check by constructor
if (world.hasResource(TestResource)) {
  const resource = world.getResource(TestResource);
  // Use resource safely
}

// Check by TypeId
const typeId = typeid(TestResource);
if (world.hasResourceByTypeId(typeId)) {
  const resource = world.getResourceByTypeId(typeId);
}

Migration Guide

No breaking changes are introduced.

Checklist

• My change requires a change to the documentation.
• I have updated the documentation accordingly.
• I have added tests to cover my changes