game.go

package egriden

// Egriden components to be embedded in your Game{} struct.
//
// You need to run [InitEgridenAssets()] in the main function before
// your game starts.
type EgridenAssets struct {
	Levels            []Level
	CurrentLevelIndex int
}

// Get the current level
func (g *EgridenAssets) Level() Level {
	return g.Levels[g.CurrentLevelIndex]
}

// Get a level by it's name. Returns nil if not found.
func (g *EgridenAssets) LevelByName(name string) Level {
	for _, le := range g.Levels {
		if le.Name() == name {
			return le
		}
	}
	return nil
}

// Append level to the end of the list and return it
func (g *EgridenAssets) AddLevel(le Level) Level {
	g.Levels = append(g.Levels, le)
	idx := len(g.Levels) - 1
	le.(*BaseLevel).index = idx
	return g.Levels[idx]
}

// Sets the current game's level or adds it if it's not in the assets already
func (g *EgridenAssets) SetLevelTo(le Level) {
	for i, rangeLe := range g.Levels {
		if rangeLe == le {
			g.CurrentLevelIndex = i
			return
		}
	}

	//If not found, add that level I guess
	g.AddLevel(le)
	g.CurrentLevelIndex = len(g.Levels) - 1
}

// Set the next level by iterating the level index
func (g *EgridenAssets) NextLevel() {
	g.CurrentLevelIndex = (g.CurrentLevelIndex + 1) % len(g.Levels)
}

// Run this while initializing the game, before adding any layers. Creates a level called `Default`
func (g *EgridenAssets) InitEgridenAssets() {
	g.AddLevel(NewBaseLevel("Default"))
}

// UNTESTED! Run all the onUpdate() functions of Gobjects that have them within the current level
func (g *EgridenAssets) RunUpdateScripts() {
	g.Level().(*BaseLevel).RunUpdateScripts()
}