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package dynamic
import (
"encoding/json"
"fmt"
"os"
coreobjects "github.com/DegustatorPonos/RuinesOfRafdolon/CoreObjects"
descriptors "github.com/DegustatorPonos/RuinesOfRafdolon/Dynamic/Descriptors"
ui "github.com/DegustatorPonos/RuinesOfRafdolon/UI"
rl "github.com/gen2brain/raylib-go/raylib"
)
const MenusDirName string = "Menus"
const RefreshButton int32 = rl.KeyF5
// Represents a menu variant that is loaded from a file
type DynamicMenu struct {
FileLocation string
baseMenu *ui.Menu
manager *coreobjects.SceneManager
}
func (base *DynamicMenu) Create(manager *coreobjects.SceneManager) {
var err = base.LoadMenu()
if err != nil {
rl.TraceLog(rl.LogWarning, "Failed to load the menu from the file %v: %v", base.FileLocation, err.Error())
base.baseMenu = &ui.Menu {
Contents: &ui.Void{},
}
}
base.manager = manager
base.baseMenu.Create(manager)
}
func (base *DynamicMenu) GetUpdateFunctions() []coreobjects.UpdateFunction {
return []coreobjects.UpdateFunction{}
}
func (base *DynamicMenu) Destroy() {
base.baseMenu.Destroy()
}
func (base *DynamicMenu) Update() {
if rl.IsKeyReleased(RefreshButton) {
rl.TraceLog(rl.LogInfo, "Reloading the menu '%v'...", base.FileLocation)
var err = base.Reload()
if err != nil {
rl.TraceLog(rl.LogWarning, "Failed to reload a dynamic menu '%v': %v", base.FileLocation, err.Error())
}
}
base.baseMenu.Update()
}
func (base *DynamicMenu) Draw() {
base.baseMenu.Draw()
}
func (base *DynamicMenu) GetMousePosition() rl.Vector2 {
return rl.GetMousePosition()
}
func (base *DynamicMenu) String() string {
var outp, jsonErr = json.Marshal(base)
if jsonErr != nil {
return fmt.Sprintf("Failed to parse: %s", jsonErr.Error())
}
return string(outp)
}
// Loads the menu from the file. Does not initialize it
func (base *DynamicMenu) LoadMenu() error {
var parsed, parseErr = base.readMenu()
if parseErr != nil {
return parseErr
}
base.baseMenu = parsed
return nil
}
func (base *DynamicMenu) Reload() error {
var parsed, parseErr = base.readMenu()
if parseErr != nil {
return parseErr
}
base.baseMenu.Destroy()
base.baseMenu = parsed
base.baseMenu.Create(base.manager)
return nil
}
// Tries to read a base menu from the file
func (base *DynamicMenu) readMenu() (*ui.Menu, error) {
var file, fErr = os.ReadFile(base.FileLocation)
if fErr != nil {
return nil, fErr
}
var descriptor = descriptors.MenuDescriptor{}
if jsonErr := json.Unmarshal(file, &descriptor); jsonErr != nil {
return nil, jsonErr
}
return descriptor.Parse()
}
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