13617072942

Committed 02 Mar 2025 04:02PM CUT coverage: 97.422% (-0.002%) from 97.424%

Build # 13617072942

Build Type

Pull #100

github

Committed by

web-flow

Commit Message

Merge d87f29472 into 8f54a3a49

Pull Request Pull Request #100: Simplify component/resource registration functions

Run Details

2 of 2 new or added lines in 1 file covered. (100.0%)

3893 of 3996 relevant lines covered (97.42%)

93522.98 hits per line

Source File
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96.88

/ecs/relation.go

package ecs

import "fmt"

var relationType = typeOf[Relation]()

// Relation is a marker for entity relation components.
// It must be embedded as first field of a component that represent an entity relation
// (see the example).
//
// Entity relations allow for fast queries using entity relationships.
// E.g. to iterate over all entities that are the child of a certain parent entity.
// Currently, each entity can only have a single relation component.
type Relation struct{}

// RelationID specifies an entity relation target by component [ID].
//
// It is used in Ark's unsafe, ID-based API.
type RelationID struct {
        component ID
        target    Entity
}

// RelID creates a new [RelationID].
func RelID(id ID, target Entity) RelationID {
        return RelationID{
                component: id,
                target:    target,
        }
}

// RelationIndex specifies an entity relation target by component index.
//
// Note that the index refers to the position of the component in the generics
// of e.g. a [Map2] or [Filter2].
// This should not be confused with component [ID] as obtained by [ComponentID]!
type RelationIndex struct {
        index  uint8
        target Entity
}

// Rel creates a new [RelationIndex].
func Rel(index int, target Entity) RelationIndex {
        return RelationIndex{
                index:  uint8(index),
                target: target,
        }
}

type relations []RelationIndex

func (r relations) toRelations(reg *componentRegistry, ids []ID, out []RelationID) []RelationID {
        out = out[:0]
        for _, rel := range r {
                id := ids[rel.index]
                if !reg.IsRelation[id.id] {
                        panic(fmt.Sprintf("component at index %d is not a relation component", rel.index))
                }
                out = append(out, RelationID{
                        component: id,
                        target:    rel.target,
                })
        }
        return out
}

type relationEntities []Entity

func (r relationEntities) toRelation(id ID, out []RelationID) []RelationID {
        out = out[:0]
        for _, rel := range r {
                out = append(out, RelationID{
                        component: id,
                        target:    rel,
                })
        }
        return out
}

1	package ecs
2
3	import "fmt"
4
5	var relationType = typeOf[Relation]()
6
7	// Relation is a marker for entity relation components.
8	// It must be embedded as first field of a component that represent an entity relation
9	// (see the example).
10	//
11	// Entity relations allow for fast queries using entity relationships.
12	// E.g. to iterate over all entities that are the child of a certain parent entity.
13	// Currently, each entity can only have a single relation component.
14	type Relation struct{}
15
16	// RelationID specifies an entity relation target by component [ID].
17	//
18	// It is used in Ark's unsafe, ID-based API.
19	type RelationID struct {
20	component ID
21	target Entity
22	}
23
24	// RelID creates a new [RelationID].
25	func RelID(id ID, target Entity) RelationID {	82✔
26	return RelationID{	82✔
27	component: id,	82✔
28	target: target,	82✔
29	}	82✔
30	}	82✔
31
32	// RelationIndex specifies an entity relation target by component index.
33	//
34	// Note that the index refers to the position of the component in the generics
35	// of e.g. a [Map2] or [Filter2].
36	// This should not be confused with component [ID] as obtained by [ComponentID]!
37	type RelationIndex struct {
38	index uint8
39	target Entity
40	}
41
42	// Rel creates a new [RelationIndex].
43	func Rel(index int, target Entity) RelationIndex {	784✔
44	return RelationIndex{	784✔
45	index: uint8(index),	784✔
46	target: target,	784✔
47	}	784✔
48	}	784✔
49
50	type relations []RelationIndex
51
52	func (r relations) toRelations(reg *componentRegistry, ids []ID, out []RelationID) []RelationID {	4,406✔
53	out = out[:0]	4,406✔
54	for _, rel := range r {	5,172✔
55	id := ids[rel.index]	766✔
56	if !reg.IsRelation[id.id] {	766✔
57	panic(fmt.Sprintf("component at index %d is not a relation component", rel.index))	×
58	}
59	out = append(out, RelationID{	766✔
60	component: id,	766✔
61	target: rel.target,	766✔
62	})	766✔
63	}
64	return out	4,406✔
65	}
66
67	type relationEntities []Entity
68
69	func (r relationEntities) toRelation(id ID, out []RelationID) []RelationID {	1,002,868✔
70	out = out[:0]	1,002,868✔
71	for _, rel := range r {	1,002,934✔
72	out = append(out, RelationID{	66✔
73	component: id,	66✔
74	target: rel,	66✔
75	})	66✔
76	}	66✔
77	return out	1,002,868✔
78	}

mlange-42 / ark / 13617072942

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