added hud system, turned all observers into one central observer

game/game.go

@@ -35,9 +35,9 @@ func NewGame(width, height, cellsize int, cfg *config.Config, startscene SceneNa
 		Config:       cfg,
 	}
 
-	observers.NewPlayerObserver(&world)
-	observers.NewParticleObserver(&world)
-	observers.NewObstacleObserver(&world)
+	// observers.NewPlayerObserver(&world)
+	// observers.NewParticleObserver(&world)
+	// observers.NewObstacleObserver(&world)
 	game.Observer = observers.NewGameObserver(&world, cfg.Startlevel, width, height, cellsize)
 
 	game.Scenes[Welcome] = NewWelcomeScene(game)

game/level_scene.go

@@ -1,12 +1,10 @@
 package game
 
 import (
-	"fmt"
 	"log/slog"
 	"openquell/assets"
 
 	"github.com/hajimehoshi/ebiten/v2"
-	"github.com/hajimehoshi/ebiten/v2/ebitenutil"
 )
 
 type LevelScene struct {
@@ -81,13 +79,4 @@ func (scene *LevelScene) Draw(screen *ebiten.Image) {
 
 	screen.Clear()
 	scene.Levels[scene.CurrentLevel].Draw(screen)
-
-	// FIXME: put into hud_system
-	op := &ebiten.DrawImageOptions{}
-	screen.DrawImage(assets.Assets["hud"], op)
-	ebitenutil.DebugPrintAt(screen, fmt.Sprintf(
-		"FPS: %02.f  TPS: %02.f",
-		ebiten.ActualFPS(),
-		ebiten.ActualTPS(),
-	), 10, 10)
 }

game/levels.go

@@ -52,6 +52,8 @@ func NewLevel(game *Game, cellsize int, plan *assets.RawLevel) *Level {
 
 	systemlist = append(systemlist, systems.NewDestroyableSystem(game.World, gridcontainer))
 
+	systemlist = append(systemlist, systems.NewHudSystem(game.World, plan))
+
 	mapslice, backupmap := LevelToSlice(game, plan, cellsize)
 
 	return &Level{
@@ -105,8 +107,8 @@ func (level *Level) SetupGrid(game *Game) {
 	level.World.Batch().RemoveEntities(selector)
 
 	// get rid of any players on PlayerObserver. FIXME: remove them in grid.NewGrid()?
-	playerobserver := observers.GetPlayerObserver(level.World)
-	playerobserver.RemoveEntities()
+	observer := observers.GetGameObserver(level.World)
+	observer.RemoveEntities()
 
 	// get rid of possibly manipulated map
 	level.RestoreMap()