1 files changed, 118 insertions, 0 deletions
diff --git a/engine/Dynamic/Package.go b/engine/Dynamic/Package.go
new file mode 100644
index 0000000..8cabc91
--- /dev/null
+++ b/engine/Dynamic/Package.go
@@ -0,0 +1,118 @@
+package dynamic
+
+import (
+	"encoding/json"
+	"fmt"
+	"os"
+
+	descriptors "github.com/DegustatorPonos/RuinesOfRafdolon/Dynamic/Descriptors"
+	settings "github.com/DegustatorPonos/RuinesOfRafdolon/Settings"
+	rl "github.com/gen2brain/raylib-go/raylib"
+)
+
+// The defenition of the package
+type PackageDescription struct {
+	Name string `json:"name"`
+	Version uint64 `json:"version"`
+	Type string `json:"type"`
+	MinimumVersion *settings.AppVersion 
+	MaximumVersion *settings.AppVersion 
+}
+
+func (base *PackageDescription) IsValid() error {
+	if base.Name == "" {
+		return fmt.Errorf("Invalid package descriptor: the name cannot be empty")
+	}
+	if base.Version == 0 {
+		return fmt.Errorf("Invalid package descriptor: the version cannot be 0")
+	}
+	if base.MinimumVersion == nil {
+		return fmt.Errorf("Invalid package descriptor: The package must specify the minimal version")
+	}
+	if !base.MinimumVersion.IsCompatible() || (base.MaximumVersion != nil && !base.MaximumVersion.IsLessThan(&settings.Current.Version)){
+		return fmt.Errorf("Invalid package descriptor: The package is made for the newer or older version")
+	}
+	return nil
+}
+
+// The dynamic collection of the things 
+type Package struct {
+	Description PackageDescription
+	Worlds map[string]*descriptors.WorldDescriptor
+
+	location string
+}
+
+func (base *Package) String() string {
+	var outp, jsonErr = json.Marshal(base)
+	if jsonErr != nil {
+		return fmt.Sprintf("Failed to parse settings: %s", jsonErr.Error())
+	}
+	return string(outp)
+}
+
+func ReadPackage(dir os.DirEntry) (*Package, error) {
+	var dirPath = ConcantinateFileLocation(settings.Current.PackagesLocation, dir.Name())
+	var desc = PackageDescription{}
+	if descErr := ReadValidJSONfromFile(ConcantinateFileLocation(dirPath, "Description.json"), &desc); descErr != nil {
+		return nil, descErr
+	}
+	return &Package{
+		Description: desc,
+	}, nil
+}
+
+func loadAssetsFromDir[T Validatable](dirLocation string, InitializeFunc func()T) ([]T, error) {
+	var files, err = os.ReadDir(dirLocation)
+	if err != nil {
+		return nil, err
+	}
+	var outp = make([]T, 0)
+	for _, v := range files {
+		var new = InitializeFunc()
+		var loadErr = ReadValidJSONfromFile(ConcantinateFileLocation(dirLocation, v.Name()), new)
+		if loadErr != nil {
+			rl.TraceLog(rl.LogWarning, "Failed to load the asset %s: %s", v.Name(), loadErr)
+			continue
+		}
+		outp = append(outp, new)
+	}
+	return outp, nil
+}
+
+func (base *Package) LoadWorlds() {
+	if base.Description.Type != "story" {
+		return
+	}
+	var worlds, loadErr = loadWorldsFromDir(ConcantinateFileLocation(base.location, "Worlds"))
+	if loadErr != nil {
+		rl.TraceLog(rl.LogWarning, "Failed to load world from the module %s: %s", base.location, loadErr)
+	} else {
+		base.Worlds = worlds
+	}
+}
+ 
+// func (base *Package) LoadTiles() {
+	// var tiles, loadErr = loadTilesFromDir(ConcantinateFileLocation(base.location, "Worlds"))
+	// if loadErr != nil {
+		// rl.TraceLog(rl.LogWarning, "Failed to load tiles from the module %s: %s", base.location, loadErr)
+	// } else {
+		// base.Tiles = tiles
+	// }
+// }
+
+func loadWorldsFromDir(dirLocation string) (map[string]*descriptors.WorldDescriptor, error) {
+	var loaded, err = loadAssetsFromDir(dirLocation, func() *descriptors.WorldDescriptor{ return &descriptors.WorldDescriptor{} })
+	if err != nil {
+		return nil, err
+	}
+	return descriptors.MapWorldDescriptors(loaded), nil
+}
+
+func loadTilesFromDir(dirLocation string) (map[uint64]*descriptors.TileDescriptor, error) {
+	var loaded, err = loadAssetsFromDir(dirLocation, func() *descriptors.TileDescriptor{ return &descriptors.TileDescriptor{} })
+	if err != nil {
+		return nil, err
+	}
+	return descriptors.MapTileDescriptors(loaded), nil
+}