100 lines
2.0 KiB
Go
100 lines
2.0 KiB
Go
|
package object
|
||
|
|
|
||
|
|
import (
|
||
|
|
"zworld/engine/renderapi/texture"
|
||
|
|
"zworld/plugins/math/quat"
|
||
|
|
"zworld/plugins/math/vec3"
|
||
|
|
)
|
||
|
|
|
||
|
|
// Builder API for game objects
|
||
|
|
type builder[K Object] struct {
|
||
|
|
object K
|
||
|
|
|
||
|
|
position vec3.T
|
||
|
|
rotation quat.T
|
||
|
|
scale vec3.T
|
||
|
|
active bool
|
||
|
|
|
||
|
|
parent Object
|
||
|
|
children []Component
|
||
|
|
}
|
||
|
|
|
||
|
|
// Builder instantiates a new group builder.
|
||
|
|
func Builder[K Object](object K) *builder[K] {
|
||
|
|
return &builder[K]{
|
||
|
|
object: object,
|
||
|
|
position: vec3.Zero,
|
||
|
|
rotation: quat.Ident(),
|
||
|
|
scale: vec3.One,
|
||
|
|
active: true,
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
// Attach a child component
|
||
|
|
func (b *builder[K]) Attach(child Component) *builder[K] {
|
||
|
|
b.children = append(b.children, child)
|
||
|
|
return b
|
||
|
|
}
|
||
|
|
|
||
|
|
// Set the parent of the object
|
||
|
|
func (b *builder[K]) Parent(parent Object) *builder[K] {
|
||
|
|
b.parent = parent
|
||
|
|
return b
|
||
|
|
}
|
||
|
|
|
||
|
|
// Position sets the intial position of the object.
|
||
|
|
func (b *builder[K]) Position(p vec3.T) *builder[K] {
|
||
|
|
b.position = p
|
||
|
|
return b
|
||
|
|
}
|
||
|
|
|
||
|
|
// Rotation sets the intial rotation of the object.
|
||
|
|
func (b *builder[K]) Rotation(r quat.T) *builder[K] {
|
||
|
|
b.rotation = r
|
||
|
|
return b
|
||
|
|
}
|
||
|
|
|
||
|
|
// Scale sets the intial scale of the object.
|
||
|
|
func (b *builder[K]) Scale(s vec3.T) *builder[K] {
|
||
|
|
b.scale = s
|
||
|
|
return b
|
||
|
|
}
|
||
|
|
|
||
|
|
// Active sets the objects active flag.
|
||
|
|
func (b *builder[K]) Active(active bool) *builder[K] {
|
||
|
|
b.active = active
|
||
|
|
return b
|
||
|
|
}
|
||
|
|
|
||
|
|
func (b *builder[K]) Texture(slot texture.Slot, ref texture.Ref) *builder[K] {
|
||
|
|
type Textured interface {
|
||
|
|
SetTexture(slot texture.Slot, ref texture.Ref)
|
||
|
|
}
|
||
|
|
if textured, ok := any(b.object).(Textured); ok {
|
||
|
|
textured.SetTexture(slot, ref)
|
||
|
|
} else {
|
||
|
|
// todo: raise a warning if its not possible?
|
||
|
|
}
|
||
|
|
return b
|
||
|
|
}
|
||
|
|
|
||
|
|
// Create instantiates a new object with the current builder settings.
|
||
|
|
func (b *builder[K]) Create() K {
|
||
|
|
obj := b.object
|
||
|
|
obj.Transform().SetPosition(b.position)
|
||
|
|
obj.Transform().SetRotation(b.rotation)
|
||
|
|
obj.Transform().SetScale(b.scale)
|
||
|
|
if b.active {
|
||
|
|
Enable(obj)
|
||
|
|
} else {
|
||
|
|
Disable(obj)
|
||
|
|
}
|
||
|
|
for _, child := range b.children {
|
||
|
|
Attach(obj, child)
|
||
|
|
}
|
||
|
|
if b.parent != nil {
|
||
|
|
Attach(b.parent, obj)
|
||
|
|
}
|
||
|
|
return obj
|
||
|
|
}
|