“能力”组件 about ecs

[shangdibaozi]

仔细想想也不需要由ecs插件来提供这种功能。完全由用户自己来做这不麻烦。
用户自己定义一个“能力”组件添加到实体身上，或者写个系统来动态给实体添加“能力”组件。

[shangdibaozi]

@ecs.register('Node ')
class NodeComponent extends ecs.IComponent {
    val: Node;
    reset() {
        this.val= null;
    }
}

@ecs.register('Movement')
class MovementComponent extends ecs.IComponent {
    speed: number = 1;
    heading: Vec2 = v2(0, 0);
    pos: Vec2 = v2(0, 0);
    
    move(dt: number) {
        this.pos.x += this.speed * this.heading.x;
        this.pos.y += this.speed * this.heading.y;
    }

    reset() {
    }
}

@ecs.register('Render')
class RenderComponent extends ecs.IComponent {
    show(dt: number) {
        let node = this.ent.Node.val;
        let moveComp = this.ent.Move;
        moveComp.move(dt);
        node.setPosition(moveComp.pos);
    }
    reset() {
    }
}

class AddRenderComponentSys extends ecs.ComblockSystem implements ecs.IEntityEnterSystem {
    filter(): ecs.Matcher {
        return ecs.allOf(NodeComponent, MovementComponent).excludeOf(RenderComponent);
    }

    entityEnter(entities: ecs.Entity[]) {
        entities.forEach(e => e.add(RenderComponent));
    }
}

class RemoveRenderComponentSys extends ecs.ComblockSystem implements ecs.IEntityRemoveSystem {
    filter(): ecs.Matcher {
        return ecs.allOf(NodeComponent, MovementComponent, RenderComponent);
    }

    entityRemove(entities: ecs.Entity[]) {
        entities.forEach(e => e.remove(RenderComponent));
    }
}