feat(render): add UI for score and game state

cmd/game/main.go

@@ -19,6 +19,7 @@ func (g *Game) Update() error {
 
 func (g *Game) Draw(screen *ebiten.Image) {
 	g.renderer.DrawWorld(screen, g.matchManager.World)
+	g.renderer.DrawUI(screen, g.matchManager)
 }
 
 func (g *Game) Layout(outsideWidth, outsideHeight int) (int, int) {

internal/render/renderer.go

@@ -1,12 +1,15 @@
 package render
 
 import (
+	"fmt"
 	"image/color"
 
 	"github.com/hajimehoshi/ebiten/v2"
+	"github.com/hajimehoshi/ebiten/v2/text"
 	"github.com/hajimehoshi/ebiten/v2/vector"
 	"github.com/soer/football/internal/entities"
 	"github.com/soer/football/internal/game"
+	"golang.org/x/image/font/basicfont"
 )
 
 type Renderer struct{}
@@ -45,3 +48,20 @@ func (r *Renderer) DrawWorld(screen *ebiten.Image, world *game.World) {
 		)
 	}
 }
+
+func (r *Renderer) DrawUI(screen *ebiten.Image, matchManager *game.MatchManager) {
+	scoreStr := fmt.Sprintf("Red: %d - Blue: %d", matchManager.ScoreRed, matchManager.ScoreBlue)
+
+	var stateStr string
+	switch matchManager.State {
+	case game.Playing:
+		stateStr = "State: Playing"
+	case game.GoalPause:
+		stateStr = "State: Goal Pause"
+	case game.MatchEnded:
+		stateStr = "State: Match Ended"
+	}
+
+	text.Draw(screen, scoreStr, basicfont.Face7x13, 10, 20, color.White)
+	text.Draw(screen, stateStr, basicfont.Face7x13, 10, 40, color.White)
+}