3 files changed, 66 insertions, 9 deletions

diff --git a/engine/Components/Packages/Manager.go b/engine/Components/Packages/Manager.go
index 47b0476..8a2786b 100644
--- a/engine/Components/Packages/Manager.go
+++ b/engine/Components/Packages/Manager.go
@@ -8,13 +8,14 @@ import (
 	rl "github.com/gen2brain/raylib-go/raylib"
 )
 
+// The collection of all avaliable packages that are loaded in the system
 type PackageManager struct {
 	AvaliablePackages map[string]Package
 }
 
 var Manager *PackageManager = nil
 
-func LoadPackages() (*PackageManager, error) {
+func loadPackages() (*PackageManager, error) {
 	var dir, dirErr = os.ReadDir(settings.Current.PackagesLocation)
 	if dirErr != nil {
 		return nil, dirErr
@@ -23,19 +24,32 @@ func LoadPackages() (*PackageManager, error) {
 		AvaliablePackages: make(map[string]Package),
 	}
 	for _, v := range dir {
+		var packagePath = ConcantinateFileLocation(settings.Current.PackagesLocation, v.Name())
 		var newPackage, packageErr = ReadPackage(v)
 		if packageErr != nil {
-			rl.TraceLog(rl.LogWarning, "Failed to load the module %v: %s", v.Name(), packageErr.Error())
+			rl.TraceLog(rl.LogWarning, "Failed to load the module %v: %s", packagePath, packageErr.Error())
 			continue
 		}
-		_ = newPackage
+
+		// Resource packages cannot contain worlds
+		if newPackage.Description.Type == "story" {
+			var worlds, worldsErr = loadWorldsFromDir(ConcantinateFileLocation(packagePath, "Worlds"))
+			if worldsErr != nil {
+				rl.TraceLog(rl.LogWarning, "Failed to load the world from the module %s: %s", v.Name(), worldsErr)
+			} else {
+				newPackage.Worlds = worlds
+			}
+		}
+
+		outp.AvaliablePackages[newPackage.Description.Name] = *newPackage
 		rl.TraceLog(rl.LogError, "Loaded the module %s", newPackage.Description.Name)
 	}
 	return &outp, nil
 }
 
+// Loads the packages from the specified in settings directory. Panics on serious error
 func Init() {
-	var manager, err = LoadPackages()
+	var manager, err = loadPackages()
 	if err != nil {
 		panic(fmt.Sprintf("Failed to load packages: %v", err.Error()))
 	}
diff --git a/engine/Components/Packages/Package.go b/engine/Components/Packages/Package.go
index 51e2a80..9f2fdd2 100644
--- a/engine/Components/Packages/Package.go
+++ b/engine/Components/Packages/Package.go
@@ -1,37 +1,48 @@
 package packages
 
 import (
+	"encoding/json"
 	"fmt"
 	"os"
 
+	world "github.com/DegustatorPonos/RuinesOfRafdolon/Components/World"
 	settings "github.com/DegustatorPonos/RuinesOfRafdolon/Settings"
+	rl "github.com/gen2brain/raylib-go/raylib"
 )
 
 type PackageDescription struct {
 	Name string `json:"name"`
 	Version uint64 `json:"version"`
 	Type string `json:"type"`
+	MinimumVersion *settings.AppVersion
+	MaximumVersion *settings.AppVersion
 }
 
 type Package struct {
 	Description PackageDescription `json:"description"`
+	Worlds map[string]world.World  `json:"-"`
+}
+
+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 := ReadJSONfromFile(ConcantinateFileLocation(dirPath, "Description.json"), &desc); descErr != nil {
+	if descErr := ReadValidJSONfromFile(ConcantinateFileLocation(dirPath, "Description.json"), &desc); descErr != nil {
 		return nil, descErr
 	}
-	if descErr := desc.Validate(); descErr != nil {
-		return nil, fmt.Errorf("Failed to parse descriptor: %s", descErr.Error())
-	}
 	return &Package{
 		Description: desc,
 	}, nil
 }
 
-func (base *PackageDescription) Validate() error {
+func (base *PackageDescription) IsValid() error {
 	if base.Name == "" {
 		return fmt.Errorf("Invalid package descriptor: the name cannot be empty")
 	}
@@ -40,3 +51,20 @@ func (base *PackageDescription) Validate() error {
 	}
 	return nil
 }
+
+func loadWorldsFromDir(dirLocation string) (map[string]world.World, error) {
+	var files, err = os.ReadDir(dirLocation)
+	if err != nil {
+		return nil, err
+	}
+	var outp = make(map[string]world.World)
+	for _, v := range files {
+		var new = world.World{}
+		var loadErr = ReadJSONfromFile(ConcantinateFileLocation(dirLocation, v.Name()), &new)
+		if loadErr != nil {
+			rl.TraceLog(rl.LogWarning, "Failed to load the world %s: %s", v.Name(), loadErr)
+			continue
+		}
+	}
+	return outp, nil
+}
diff --git a/engine/Components/Packages/Validation.go b/engine/Components/Packages/Validation.go
new file mode 100644
index 0000000..04428d2
--- /dev/null
+++ b/engine/Components/Packages/Validation.go
@@ -0,0 +1,15 @@
+package packages
+
+type Validatable interface {
+	// If the object is returned invalid this function should return the reason
+	IsValid() error
+}
+
+// Reads object fron the file and validates it
+func ReadValidJSONfromFile(fileLocation string, v Validatable) error {
+	var err = ReadJSONfromFile(fileLocation, v)
+	if err != nil {
+		return err
+	}
+	return v.IsValid()
+}