Remove internal/conv

This sets font rendering back a little bit, but not much.

internal/assetstore/object.go

@@ -3,6 +3,8 @@ package assetstore
 import (
 	"fmt"
 	"log"
+	"path/filepath"
+	"strings"
 
 	"github.com/hajimehoshi/ebiten"
 
@@ -13,7 +15,9 @@ type Object struct {
 	assets  *AssetStore
 	sprites []*Sprite
 
-	raw *data.Object
+	raw        *data.Object
+	NumSprites int
+	Name       string
 }
 
 type Sprite struct {
@@ -41,23 +45,49 @@ func (a *AssetStore) Object(name string) (*Object, error) {
 		return nil, err
 	}
 
-	raw, err := data.LoadObjectLazily(filename)
+	obj, err := a.ObjectByPath(filename)
 	if err != nil {
 		return nil, err
 	}
-	raw.Name = name
-
-	obj := &Object{
-		assets:  a,
-		sprites: make([]*Sprite, int(raw.NumSprites)),
-		raw:     raw,
-	}
 
 	a.objs[name] = obj
+
 	return obj, nil
 }
 
-// Filled lazily
+// FIXME: Objects loaded by path are not cached
+func (a *AssetStore) ObjectByPath(path string) (*Object, error) {
+	name := filepath.Base(path)
+	name = strings.Replace(name, filepath.Ext(name), "", -1)
+	name = canonical(name)
+
+	raw, err := data.LoadObjectLazily(path)
+	if err != nil {
+		return nil, err
+	}
+
+	obj := &Object{
+		assets:     a,
+		sprites:    make([]*Sprite, int(raw.NumSprites)),
+		raw:        raw,
+		NumSprites: int(raw.NumSprites),
+		Name:       canonical(name),
+	}
+
+	return obj, nil
+}
+
+// Loads all sprites in the object eagerly
+func (o *Object) LoadSprites() error {
+	for i := 0; i < o.NumSprites; i++ {
+		if _, err := o.Sprite(i); err != nil {
+			return err
+		}
+	}
+
+	return nil
+}
+
 func (o *Object) Sprite(idx int) (*Sprite, error) {
 	if sprite := o.sprites[idx]; sprite != nil {
 		return sprite, nil