Added randomly generated background.

fonts/fonts.go

@@ -0,0 +1,85 @@
+package fonts
+
+import (
+	"log"
+
+	_ "embed"
+
+	"github.com/hajimehoshi/ebiten/examples/resources/fonts"
+	"golang.org/x/image/font"
+	"golang.org/x/image/font/opentype"
+	"golang.org/x/image/font/sfnt"
+)
+
+const (
+	FontDPI            = 72
+	FontSizeStandard   = 16
+	FontSizeLarge      = 24
+	FontSizeBig        = 60
+	FontSizeArcade     = 12
+	FontSizeArcadeBig  = 40
+	FontSizeArcadeHuge = 80
+)
+
+type FontStruct struct {
+	Standard    font.Face
+	Large       font.Face
+	Glitch      font.Face
+	GlitchBig   font.Face
+	Arcade      font.Face
+	ArcadeLarge font.Face
+	ArcadeHuge  font.Face
+}
+
+var (
+
+	//go:embed agencyb.ttf
+	agency_ttf []byte
+
+	//go:embed arcade_n.ttf
+	arcade_ttf []byte
+
+	SurviveFont FontStruct
+)
+
+func LoadFontFatal(src []byte) *sfnt.Font {
+	tt, err := opentype.Parse(src)
+	if err != nil {
+		log.Fatal(err)
+	}
+	return tt
+}
+
+func GetFaceFatal(fnt *sfnt.Font, dpi, size float64) font.Face {
+	var face font.Face
+	var err error
+
+	if dpi > 0 && size > 0 && fnt != nil {
+		face, err = opentype.NewFace(fnt, &opentype.FaceOptions{
+			Size:    size,
+			DPI:     dpi,
+			Hinting: font.HintingVertical,
+		})
+		if err != nil {
+			log.Fatal(err)
+		}
+	}
+	return face
+}
+
+func init() {
+	SurviveFont = FontStruct{}
+
+	fnt := LoadFontFatal(fonts.MPlus1pRegular_ttf)
+	SurviveFont.Standard = GetFaceFatal(fnt, FontDPI, FontSizeStandard)
+	SurviveFont.Large = GetFaceFatal(fnt, FontDPI, FontSizeLarge)
+
+	fnt2 := LoadFontFatal(agency_ttf)
+	SurviveFont.Glitch = GetFaceFatal(fnt2, FontDPI, FontSizeLarge)
+	SurviveFont.GlitchBig = GetFaceFatal(fnt2, FontDPI, FontSizeBig)
+
+	fnt3 := LoadFontFatal(arcade_ttf)
+	SurviveFont.Arcade = GetFaceFatal(fnt3, FontDPI, FontSizeArcade)
+	SurviveFont.ArcadeLarge = GetFaceFatal(fnt3, FontDPI, FontSizeArcadeBig)
+	SurviveFont.ArcadeHuge = GetFaceFatal(fnt3, FontDPI, FontSizeArcadeHuge)
+}

game.go

@@ -1,13 +1,20 @@
 package main
 
 import (
+	"bytes"
+	"fmt"
+	"image"
 	"image/color"
 	"log"
 	"math"
 	"math/rand/v2"
+	"mover/fonts"
+
+	_ "embed"
 
 	"github.com/hajimehoshi/ebiten/v2"
 	"github.com/hajimehoshi/ebiten/v2/inpututil"
+	"github.com/hajimehoshi/ebiten/v2/text"
 	"github.com/hajimehoshi/ebiten/v2/vector"
 )
 
@@ -16,17 +23,31 @@ const (
 	MOVER_HEIGHT = 48
 )
 
+var (
+	tilesetImage *ebiten.Image
+
+	//go:embed grasstile.png
+	tileset_img []byte
+)
+
 type Game struct {
-	collisionMask  *ebiten.Image
-	projectileMask *ebiten.Image
+	background        *ebiten.Image
+	collisionMask     *ebiten.Image
+	projectileMask    *ebiten.Image
+	heroCollisionMask *ebiten.Image
+	heroCollisionCpy  *ebiten.Image
 
 	Pos         Coordinates
 	Paused      bool
 	initialized bool
-	mover       *Mover
+	gameover    bool
+	reset       bool
+	runtime     float64
+	hero        *Hero
 	projectiles map[int]*Projectile
 	explosion   *Explosion
 
+	score   int
 	counter int
 	timer   int
 	targets []*Mover
@@ -37,19 +58,44 @@ type Game struct {
 	//pressedButtons map[ebiten.GamepadID][]string
 }
 
+func init() {
+	img, _, err := image.Decode(bytes.NewReader(tileset_img))
+	if err != nil {
+		log.Fatal(err)
+	}
+	tilesetImage = ebiten.NewImageFromImage(img)
+}
+
 func (g *Game) Initialize() {
 
 	origin := Coordinates{X: 640 / 2, Y: 480 / 2}
 
-	g.mover = NewMover()
-	g.mover.SetOrigin(origin)
-	g.mover.ToggleRotate()
+	g.ConstructBackground()
+	g.hero = NewHero()
+	g.hero.SetOrigin(origin)
+	g.hero.ToggleRotate()
+
+	g.gameover = false
 
 	g.collisionMask = ebiten.NewImage(screenWidth, screenHeight)
 	g.projectileMask = ebiten.NewImage(screenWidth, screenHeight)
+	g.heroCollisionMask = ebiten.NewImage(MOVER_WIDTH, MOVER_HEIGHT)
+	g.heroCollisionCpy = ebiten.NewImage(MOVER_WIDTH, MOVER_HEIGHT)
 
 	g.explosion = NewExplosion()
 	g.explosion.SetOrigin(origin)
+	g.score = 0
+	g.reset = false
+
+	for j := 0; j < len(g.targets); j++ {
+		g.targets[j] = nil
+	}
+	g.targets = g.targets[:0]
+
+	g.score = 0
+	g.counter = 0
+	g.timer = 0
+	g.runtime = 0.
 
 }
 
@@ -71,11 +117,12 @@ func (g *Game) Update() error {
 		}
 	}
 
-	if !g.initialized {
+	if !g.initialized || g.reset {
 		g.Initialize()
 
 		g.projectiles = make(map[int]*Projectile)
 		g.initialized = true
+		g.reset = false
 	} else {
 		g.StepGame()
 	}
@@ -87,19 +134,32 @@ func (g *Game) Update() error {
 
 func (g *Game) Draw(screen *ebiten.Image) {
 
-	g.mover.Draw()
+	screen.Clear()
+	screen.DrawImage(g.background, nil)
+
+	g.hero.Draw()
 
 	op := &ebiten.DrawImageOptions{}
 
-	/*
-		dx := 40 * math.Cos(float64(g.counter)/16)
-		dy := 40 * math.Sin(float64(g.counter)/16)
-		a := float64(g.counter) / (math.Pi * 2)
-	*/
+	if !g.gameover {
+		g.runtime = float64(g.counter) / 60.
+	}
+
+	s := fmt.Sprintf("%02.3f", g.runtime)
+	if !g.gameover {
+		text.Draw(screen, "TIME: "+s, fonts.SurviveFont.Arcade, 640/2-250, 25, color.White)
+		text.Draw(screen, fmt.Sprintf("SCORE: %d", g.score*10), fonts.SurviveFont.Arcade, 640/2+100, 25, color.White)
+	} else {
+		if (g.counter/30)%2 == 0 {
+			text.Draw(screen, "TIME: "+s, fonts.SurviveFont.Arcade, 640/2-250, 25, color.White)
+			text.Draw(screen, fmt.Sprintf("SCORE: %d", g.score*10), fonts.SurviveFont.Arcade, 640/2+100, 25, color.White)
+		}
+	}
+
 	op.GeoM.Translate(-MOVER_WIDTH/2, -MOVER_HEIGHT/2)
-	op.GeoM.Rotate(g.mover.Angle)
-	op.GeoM.Translate(g.mover.Pos.X, g.mover.Pos.Y)
-	screen.DrawImage(g.mover.Sprite, op)
+	op.GeoM.Rotate(g.hero.Angle)
+	op.GeoM.Translate(g.hero.Pos.X, g.hero.Pos.Y)
+	screen.DrawImage(g.hero.Sprite, op)
 
 	for _, target := range g.targets {
 		target.Draw()
@@ -142,10 +202,13 @@ func (g *Game) CleanupTargets() {
 			i++
 		}
 	}
+
 	//then culling the last elements of the slice
-	/*if len(g.targets)-i > 0 {
-		fmt.Printf("Removing %d elements\n", len(g.targets)-i)
-	}*/
+	if len(g.targets)-i > 0 {
+		//	fmt.Printf("Removing %d elements\n", len(g.targets)-i)
+		g.score += len(g.targets) - i
+	}
+
 	for j := i; j < len(g.targets); j++ {
 		g.targets[j] = nil
 	}
@@ -160,20 +223,20 @@ func (g *Game) StepGame() {
 
 		g.UpdateHeroPosition()
 
-		g.mover.Update()
+		g.hero.Update()
 		g.explosion.Update()
 
 		g.UpdateTargets()
 		g.UpdateProjectiles()
 
-		//append new projectiles
-		g.AppendProjectiles()
-
-		//add new target with increasing frequency
-		g.AddNewTargets()
-
-		//handle pulsewave updates
-		g.HandlePulseWaveUpdate()
+		if !g.gameover {
+			//append new projectiles
+			g.AppendProjectiles()
+			//add new target with increasing frequency
+			g.AddNewTargets()
+			//handle pulsewave updates
+			g.HandlePulseWaveUpdate()
+		}
 
 		g.CleanupTargets()
 		g.counter++
@@ -198,8 +261,8 @@ func (g *Game) HandlePulseWaveUpdate() {
 
 		//check collisions
 		for _, target := range g.targets {
-			dx := target.Pos.X - g.mover.Pos.X
-			dy := target.Pos.Y - g.mover.Pos.Y
+			dx := target.Pos.X - g.hero.Pos.X
+			dy := target.Pos.Y - g.hero.Pos.Y
 			r := math.Sqrt(dx*dx + dy*dy)
 
 			if r >= g.explosion.Radius-5 && r <= g.explosion.Radius+5 && target.Action <= MoverActionDamaged && !target.Touched {
@@ -230,6 +293,8 @@ func (g *Game) UpdateProjectiles() {
 			if p.Pos.X >= target.Pos.X-MOVER_WIDTH/2 && p.Pos.X <= target.Pos.X+MOVER_WIDTH/2 && p.Pos.Y >= target.Pos.Y-MOVER_HEIGHT/2 && p.Pos.Y <= target.Pos.Y+MOVER_HEIGHT/2 && target.Action == MoverActionDamaged {
 				//fmt.Println("potential collision")
 
+				//the following computes total collisions in the image using a projectile mask that is a duplicate of what is on screen
+				//there's definitely room for optimization here
 				g.collisionMask.Clear()
 				g.collisionMask.DrawImage(g.projectileMask, nil)
 
@@ -261,9 +326,9 @@ func (g *Game) UpdateProjectiles() {
 func (g *Game) UpdateTargets() {
 	for _, target := range g.targets {
 
-		if !target.Hit {
-			dx := g.mover.Pos.X - target.Pos.X
-			dy := g.mover.Pos.Y - target.Pos.Y
+		if !target.Hit && g.hero.Action < MoverActionDying {
+			dx := g.hero.Pos.X - target.Pos.X
+			dy := g.hero.Pos.Y - target.Pos.Y
 			angle := math.Atan2(dy, dx)
 
 			maxspeed := 3.
@@ -271,6 +336,30 @@ func (g *Game) UpdateTargets() {
 			target.Pos.Y += maxspeed * math.Sin(angle)
 		}
 
+		//compute collision with hero
+		if g.hero.Pos.X >= target.Pos.X-MOVER_WIDTH/2 && g.hero.Pos.X <= target.Pos.X+MOVER_WIDTH/2 && g.hero.Pos.Y >= target.Pos.Y-MOVER_HEIGHT/2 && g.hero.Pos.Y <= target.Pos.Y+MOVER_HEIGHT/2 && target.Action < MoverActionDying {
+			g.heroCollisionMask.Clear()
+			g.heroCollisionMask.DrawImage(g.hero.Sprite, nil)
+
+			op := &ebiten.DrawImageOptions{}
+			op.GeoM.Reset()
+			op.Blend = ebiten.BlendSourceIn
+			op.GeoM.Translate((g.hero.Pos.X-target.Pos.X)-MOVER_WIDTH/2, (g.hero.Pos.Y-target.Pos.Y)-MOVER_HEIGHT/2)
+			g.heroCollisionMask.DrawImage(target.Sprite, op)
+
+			//var pixels []byte = make([]byte, MOVER_WIDTH*MOVER_HEIGHT*4)
+			var pixels []byte = make([]byte, MOVER_HEIGHT*MOVER_HEIGHT*4)
+			g.heroCollisionMask.ReadPixels(pixels)
+			for i := 0; i < len(pixels); i = i + 4 {
+				if pixels[i+3] != 0 {
+					fmt.Println("pixel death")
+					g.hero.Action = MoverActionDying
+					g.gameover = true
+					break
+				}
+			}
+		}
+
 		target.Update()
 	}
 }
@@ -284,8 +373,8 @@ func (g *Game) ResetTargetTouches() {
 func (g *Game) AppendProjectiles() {
 	if g.counter%14 == 0 && ebiten.IsGamepadButtonPressed(0, ebiten.GamepadButton7) {
 
-		g.projectiles[g.counter] = NewProjectile(Coordinates{X: g.mover.Pos.X, Y: g.mover.Pos.Y}, g.mover.Angle, 5.)
-		g.projectiles[g.counter+1] = NewProjectile(Coordinates{X: g.mover.Pos.X, Y: g.mover.Pos.Y}, g.mover.Angle+math.Pi, 5.)
+		g.projectiles[g.counter] = NewProjectile(Coordinates{X: g.hero.Pos.X, Y: g.hero.Pos.Y}, g.hero.Angle, 5.)
+		g.projectiles[g.counter+1] = NewProjectile(Coordinates{X: g.hero.Pos.X, Y: g.hero.Pos.Y}, g.hero.Angle+math.Pi, 5.)
 	}
 }
 
@@ -293,14 +382,18 @@ func (g *Game) HandleInput() {
 	if len(g.gamepadIDs) > 0 {
 		if ebiten.IsGamepadButtonPressed(0, ebiten.GamepadButton11) {
 			if !g.explosion.Active {
-				g.explosion.SetOrigin(g.mover.Pos)
+				g.explosion.SetOrigin(g.hero.Pos)
 				g.explosion.Reset()
 				g.explosion.ToggleActivate()
 			}
 		}
 
 		if inpututil.IsGamepadButtonJustPressed(0, ebiten.GamepadButton9) {
-			g.Paused = !g.Paused
+			if g.gameover {
+				g.reset = true
+			} else {
+				g.Paused = !g.Paused
+			}
 		}
 
 		//account for controller sensitivity
@@ -315,7 +408,7 @@ func (g *Game) HandleInput() {
 		}
 
 		inputangle := math.Atan2(yaxis, xaxis)
-		g.mover.SetAngle(inputangle)
+		g.hero.SetAngle(inputangle)
 	}
 }
 
@@ -324,10 +417,33 @@ func (g *Game) UpdateHeroPosition() {
 	inpx := ebiten.GamepadAxisValue(0, 0)
 	inpy := ebiten.GamepadAxisValue(0, 1)
 	if inpx >= 0.15 || inpx <= -0.15 {
-		g.mover.Pos.X += ebiten.GamepadAxisValue(0, 0) * 5
+		g.hero.Pos.X += ebiten.GamepadAxisValue(0, 0) * 5
 	}
 
 	if inpy >= 0.15 || inpy <= -0.15 {
-		g.mover.Pos.Y += ebiten.GamepadAxisValue(0, 1) * 5
+		g.hero.Pos.Y += ebiten.GamepadAxisValue(0, 1) * 5
+	}
+}
+
+func (g *Game) ConstructBackground() {
+	g.background = ebiten.NewImage(screenWidth, screenHeight)
+
+	for i := 0; i < 640/16; i++ {
+		for j := 0; j < 480/16; j++ {
+
+			//select random tile in x and y from tileset
+			idx_x := rand.IntN(256 / 16)
+			idx_y := rand.IntN(256 / 16)
+
+			x0 := 16 * idx_x
+			y0 := 16 * idx_y
+			x1 := x0 + 16
+			y1 := y0 + 16
+
+			//translate for grid element we're painting
+			op := &ebiten.DrawImageOptions{}
+			op.GeoM.Translate(float64(i)*16, float64(j)*16)
+			g.background.DrawImage(tilesetImage.SubImage(image.Rect(x0, y0, x1, y1)).(*ebiten.Image), op)
+		}
 	}
 }

go.mod

@@ -4,7 +4,11 @@ go 1.22.0
 
 toolchain go1.22.8
 
-require github.com/hajimehoshi/ebiten/v2 v2.8.2
+require (
+	github.com/hajimehoshi/ebiten v1.12.12
+	github.com/hajimehoshi/ebiten/v2 v2.8.2
+	golang.org/x/image v0.20.0
+)
 
 require (
 	github.com/ebitengine/gomobile v0.0.0-20240911145611-4856209ac325 // indirect
@@ -13,4 +17,5 @@ require (
 	github.com/jezek/xgb v1.1.1 // indirect
 	golang.org/x/sync v0.8.0 // indirect
 	golang.org/x/sys v0.25.0 // indirect
+	golang.org/x/text v0.18.0 // indirect
 )

hero.go

@@ -0,0 +1,120 @@
+package main
+
+import (
+	"bytes"
+	"image"
+	"log"
+
+	_ "embed"
+	"image/color"
+	_ "image/png"
+
+	"github.com/hajimehoshi/ebiten/v2"
+)
+
+var (
+	heroImage *ebiten.Image
+
+	//go:embed hero.png
+	hero_img []byte
+)
+
+const (
+	HeroActionDefault = iota
+	HeroActionDamaged
+	HeroActionDying
+	HeroActionExploding
+	HeroActionDead
+	HeroActionMax
+)
+
+type HeroAction uint
+
+func init() {
+	img, _, err := image.Decode(bytes.NewReader(hero_img))
+	if err != nil {
+		log.Fatal(err)
+	}
+	heroImage = ebiten.NewImageFromImage(img)
+}
+
+type Hero struct {
+	Sprite     *ebiten.Image
+	Maks       *ebiten.Image
+	MaksDest   *ebiten.Image
+	Angle      float64
+	Pos        Coordinates
+	Origin     Coordinates
+	Action     HeroAction
+	cycles     int
+	rotating   bool
+	Toggled    bool
+	Hit        bool
+	Touched    bool
+	dyingcount int
+}
+
+func NewHero() *Hero {
+	m := &Hero{
+		Sprite:     ebiten.NewImage(48, 48),
+		Maks:       ebiten.NewImage(48, 48),
+		MaksDest:   ebiten.NewImage(48, 48),
+		Action:     HeroActionDefault,
+		cycles:     4,
+		Angle:      0,
+		rotating:   false,
+		Toggled:    false,
+		dyingcount: 0,
+	}
+
+	m.Maks.Fill(color.White)
+	return m
+}
+
+func (m *Hero) ToggleRotate() {
+	m.rotating = !m.rotating
+}
+
+func (m *Hero) SetAngle(a float64) {
+	m.Angle = a
+}
+
+func (m *Hero) SetOrigin(coords Coordinates) {
+	m.Origin = coords
+	m.Pos = coords
+}
+
+func (m *Hero) Draw() {
+	m.Sprite.Clear()
+	m.MaksDest.Clear()
+
+	idx := (m.cycles / 8) % 4
+
+	y0 := 0
+	y1 := 48
+	x0 := 48 * idx
+	x1 := x0 + 48
+
+	switch m.Action {
+	case HeroActionDefault:
+		m.Sprite.DrawImage(heroImage.SubImage(image.Rect(x0, y0, x1, y1)).(*ebiten.Image), nil)
+	default:
+	}
+}
+
+func (m *Hero) Update() {
+	m.cycles++
+}
+
+func (m *Hero) SetHit() {
+	m.Action++ // = (m.Action + 1) % HeroActionMax
+}
+
+func (m *Hero) ToggleColor() {
+	//m.Toggled = !m.Toggled
+	if m.Action == HeroActionDefault {
+		m.Action = HeroActionDamaged
+	} else if m.Action == HeroActionDamaged {
+		m.Action = HeroActionDefault
+	}
+}

main.go

@@ -13,7 +13,7 @@ const (
 )
 
 func main() {
-	ver := "Mover Test v0.05"
+	ver := "survive v0.08"
 
 	fmt.Println(ver)