add moving animation support, fix debug printing

systems/player_system.go

@@ -8,6 +8,7 @@ import (
 	. "openquell/config"
 	"openquell/grid"
 	"openquell/observers"
+	"openquell/util"
 
 	"github.com/hajimehoshi/ebiten/v2"
 	"github.com/hajimehoshi/ebiten/v2/ebitenutil"
@@ -136,7 +137,9 @@ func (system *PlayerSystem) Draw(screen *ebiten.Image) {
 
 		screen.DrawImage(sprite.Image, op)
 
-		ebitenutil.DebugPrintAt(screen, pos.String(), pos.X, pos.Y) // print player pos
+		if util.DebugEnabled() {
+			ebitenutil.DebugPrintAt(screen, pos.SmallString(), pos.X, pos.Y+16) // print player pos
+		}
 	}
 }
 
@@ -210,7 +213,9 @@ func (system *PlayerSystem) CheckMovement(
 			observer.AddMove()
 		}
 	} else {
-		fmt.Println("------------------------")
+		if util.DebugEnabled() {
+			fmt.Println("------------------------")
+		}
 		slog.Debug("(1) player is at", "current", position.String())
 	}
 }