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loader.go
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/
loader.go
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package assets
import (
"log"
"github.com/walesey/go-engine/editor/models"
"github.com/walesey/go-engine/renderer"
)
type geomImport struct {
geometry *renderer.Geometry
material *renderer.Material
callback func(geometry *renderer.Geometry, material *renderer.Material)
}
type mapImport struct {
node *renderer.Node
model *editorModels.NodeModel
callback func(node *renderer.Node, model *editorModels.NodeModel)
}
// The loader allows asyncronous loading of obj and map files
type Loader struct {
geoms chan geomImport
maps chan mapImport
}
func NewLoader() *Loader {
return &Loader{
geoms: make(chan geomImport, 256),
maps: make(chan mapImport, 256),
}
}
func (loader *Loader) Update(dt float64) {
for {
select {
case g := <-loader.geoms:
g.callback(g.geometry, g.material)
case m := <-loader.maps:
m.callback(m.node, m.model)
default:
return
}
}
}
func (loader *Loader) LoadMap(path string, callback func(node *renderer.Node, model *editorModels.NodeModel)) {
go func() {
srcModel := LoadMap(path)
destNode := renderer.NewNode()
loadedModel := LoadMapToNode(srcModel.Root, destNode)
loader.maps <- mapImport{
node: destNode,
model: loadedModel,
callback: callback,
}
}()
}
func (loader *Loader) LoadObj(path string, callback func(geometry *renderer.Geometry, material *renderer.Material)) {
go func() {
loadedGeometry, loadedMaterial, err := ImportObjCached(path)
if err != nil {
log.Println("Error Loading Obj: ", err)
} else {
loader.geoms <- geomImport{
geometry: loadedGeometry,
material: loadedMaterial,
callback: callback,
}
}
}()
}