Spawning radi

main.go

@@ -4,12 +4,12 @@ import (
 	"fmt"
 	_ "image/png"
 	"log"
+	"time"
 
 	"github.com/hajimehoshi/ebiten/v2"
 	"github.com/hajimehoshi/ebiten/v2/ebitenutil"
 	"github.com/hajimehoshi/ebiten/v2/inpututil"
 	"gitlab.com/kbr4/9heroja/collision"
-	"gitlab.com/kbr4/9heroja/configuration"
 	"gitlab.com/kbr4/9heroja/input"
 	"gitlab.com/kbr4/9heroja/terrain"
 	"gitlab.com/kbr4/9heroja/tiles"
@@ -43,12 +43,6 @@ func floorMod(x, y int) int {
 }
 
 type Game struct {
-
-	// The gopher's position
-	x16  int
-	y16  int
-	vy16 int
-
 	keys []ebiten.Key
 
 	control *input.Keyboard
@@ -59,12 +53,16 @@ type Game struct {
 	bullets  []*weapons.Handgun
 	ending   *tiles.Ending
 	starting *tiles.Starting
+
+	gameSpeed         time.Duration
+	tickCount         int
+	zombiesToSpawn    int
+	zombieSpawnTicker *time.Ticker
 }
 
 func (g *Game) Update() error {
 	g.keys = inpututil.AppendPressedKeys(g.keys[:0])
 	GameInstance.terrain.ChangeDirection(GameInstance.control.DirectionFromKeys(g.keys))
-
 	g.world.NotifyAboutCollisions()
 	return nil
 }
@@ -105,28 +103,38 @@ func init() {
 	GameInstance = &Game{}
 	GameInstance.world = collision.NewWorld()
 	GameInstance.control = &input.Keyboard{}
-	GameInstance.zombies = []*zombie.Zombie{zombie.NewZombie(), zombie.NewZombie(), zombie.NewZombie(), zombie.NewZombie(), zombie.NewZombie()}
+	GameInstance.zombies = []*zombie.Zombie{}
 	GameInstance.ending = tiles.NewEnding()
 	GameInstance.starting = tiles.NewStarting()
 
 	GameInstance.world.AddEntity(GameInstance.starting)
 	GameInstance.world.AddEntity(GameInstance.ending)
 
-	// put zombies in random places on the screen but not too close to the hero or each other
-	for _, z := range GameInstance.zombies {
-		z.X = float64(configuration.Random(50, screenWidth-50))
-		z.Y = float64(configuration.Random(50, screenHeight-50))
-		for z.X > float64(screenWidth/2-64) && z.X < float64(screenWidth/2+64) && z.Y > float64(screenHeight/2-64) && z.Y < float64(screenHeight/2+64) {
-			z.X = float64(configuration.Random(0, screenWidth))
-			z.Y = float64(configuration.Random(0, screenHeight))
-		}
-		z.WhereToGoX = GameInstance.ending.X
-		z.WhereToGoY = GameInstance.ending.Y
-		z.Walk()
-		GameInstance.world.AddEntity(z)
-	}
+	GameInstance.gameSpeed = 100 * time.Millisecond
+	GameInstance.zombieSpawnTicker = time.NewTicker(GameInstance.gameSpeed)
+	GameInstance.zombiesToSpawn = 20
 
 	GameInstance.terrain = terrain.NewTerrain()
+
+	go func() {
+		log.Println("Starting zombie spawn ticker")
+		for {
+			select {
+			case <-GameInstance.zombieSpawnTicker.C:
+				GameInstance.tickCount++
+				if GameInstance.tickCount%10 == 0 && GameInstance.zombiesToSpawn > 0 {
+					z := GameInstance.starting.SpawnZombie(GameInstance.ending.X, GameInstance.ending.Y)
+					GameInstance.zombies = append(GameInstance.zombies, z)
+					GameInstance.world.AddEntity(z)
+					GameInstance.zombiesToSpawn--
+				}
+			}
+			if GameInstance.zombiesToSpawn <= 0 {
+				GameInstance.zombieSpawnTicker.Stop()
+				break
+			}
+		}
+	}()
 }
 
 func main() {

tiles/starting.go

@@ -9,6 +9,7 @@ import (
 	"github.com/hajimehoshi/ebiten/v2"
 	"gitlab.com/kbr4/9heroja/collision"
 	"gitlab.com/kbr4/9heroja/resources"
+	"gitlab.com/kbr4/9heroja/zombie"
 )
 
 var (
@@ -75,3 +76,13 @@ func (s *Starting) HandleCollisionEvent(other collision.Collidable) {
 		fmt.Println("Starting hit by zombie")
 	}
 }
+
+func (s *Starting) SpawnZombie(whereToGoX, whereToGoY float64) *zombie.Zombie {
+	z := zombie.NewZombie()
+	z.X = s.X
+	z.Y = s.Y
+	z.WhereToGoX = whereToGoX
+	z.WhereToGoY = whereToGoY
+	z.Walk()
+	return z
+}

zombie/zombie.go

@@ -3,34 +3,35 @@ package zombie
 import (
 	"bytes"
 	"fmt"
+	"image"
+	"log"
+	"time"
+
 	"github.com/hajimehoshi/ebiten/v2"
 	"gitlab.com/kbr4/9heroja/collision"
 	"gitlab.com/kbr4/9heroja/configuration"
 	"gitlab.com/kbr4/9heroja/resources"
-	"image"
-	"log"
-	"time"
 )
 
 const WalkSpeedMs = 10
 
 var (
-	zombieImage     *ebiten.Image
-	walkTicker      *time.Ticker
-	animationTicker *time.Ticker
+	zombieImage *ebiten.Image
 )
 
 type Zombie struct {
-	step       int
-	direction  configuration.Direction
-	IsWalking  bool
-	X          float64
-	Y          float64
-	OffsetX    float64
-	OffsetY    float64
-	WhereToGoX float64
-	WhereToGoY float64
-	IsDead     bool
+	step            int
+	direction       configuration.Direction
+	IsWalking       bool
+	X               float64
+	Y               float64
+	OffsetX         float64
+	OffsetY         float64
+	WhereToGoX      float64
+	WhereToGoY      float64
+	IsDead          bool
+	walkTicker      *time.Ticker
+	animationTicker *time.Ticker
 }
 
 type spritePosition struct {
@@ -77,8 +78,6 @@ func init() {
 		log.Fatal(err)
 	}
 	zombieImage = ebiten.NewImageFromImage(img)
-	walkTicker = time.NewTicker(WalkSpeedMs * time.Millisecond)
-	animationTicker = time.NewTicker(WalkSpeedMs * 5 * time.Millisecond) // Adjust the speed of animation frames
 }
 
 func NewZombie() *Zombie {
@@ -87,11 +86,13 @@ func NewZombie() *Zombie {
 		IsWalking: false,
 		IsDead:    false,
 	}
+	zombie.walkTicker = time.NewTicker(WalkSpeedMs * time.Millisecond)
+	zombie.animationTicker = time.NewTicker(WalkSpeedMs * 10 * time.Millisecond) // Adjust the speed of animation frames
 
 	go func() {
 		for {
 			select {
-			case <-walkTicker.C:
+			case <-zombie.walkTicker.C:
 				if zombie.IsWalking {
 					// Move the zombie towards its target position
 					if zombie.X < zombie.WhereToGoX {
@@ -112,7 +113,7 @@ func NewZombie() *Zombie {
 	go func() {
 		for {
 			select {
-			case <-animationTicker.C:
+			case <-zombie.animationTicker.C:
 				if zombie.IsWalking {
 					zombie.step++
 					if zombie.step > 3 {
@@ -129,7 +130,7 @@ func NewZombie() *Zombie {
 func (z *Zombie) Walk() {
 
 	if !z.IsWalking {
-		walkTicker.Reset(WalkSpeedMs * time.Millisecond)
+		z.walkTicker.Reset(WalkSpeedMs * time.Millisecond)
 		z.IsWalking = true
 	}