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package main
import (
"bytes"
"image"
"image/color"
_ "image/jpeg"
"os"
"runtime/pprof"
"time"
"age_of_empires/ecs"
"age_of_empires/physics"
"age_of_empires/selection"
"github.com/hajimehoshi/ebiten/v2"
"github.com/hajimehoshi/ebiten/v2/inpututil"
"github.com/hajimehoshi/ebiten/v2/text/v2"
"github.com/martinlehoux/kagamigo/kcore"
"golang.org/x/exp/slog"
"golang.org/x/image/font/gofont/goregular"
)
type Action string
const (
Selecting Action = "selecting"
Patrolling Action = "patrolling"
)
var soilColor = color.RGBA{0x60, 0x40, 0x20, 0xff}
type Game struct {
Entities []*Entity
CurrentAction Action
Selection selection.GlobalSelection
ResourceAmount int
FaceSource *text.GoTextFaceSource
UnitBuilder EntityBuilder
}
// TODO: This could be a maintained index
func (g *Game) getMoveMap() physics.MoveMap {
blocked := map[physics.Point]bool{}
for _, e := range g.Entities {
if e.Position.IsEnabled {
blocked[e.Position.Value] = true
}
}
return physics.MoveMap{Width: 3200, Height: 2400, Blocked: blocked}
}
// TODO: This could be a maintained index
func (g *Game) entityAt(position physics.Point) *Entity {
for _, e := range g.Entities {
if e.Position.IsEnabled && e.Position.Value == position {
return e
}
}
return nil
}
const (
KeySpawnRequest = ebiten.KeyS
KeyPatrolRequest = ebiten.KeyA // TODO: Should be Q
)
func (g *Game) updateSelecting(cursor physics.Point, moveMap physics.MoveMap) {
if inpututil.IsKeyJustReleased(ebiten.KeyEscape) {
g.Selection.Clear()
}
if inpututil.IsMouseButtonJustPressed(ebiten.MouseButtonLeft) {
g.Selection.Start(cursor)
}
if inpututil.IsMouseButtonJustReleased(ebiten.MouseButtonRight) {
destination := cursor.Div(100).Mul(100)
entityAtDestination := g.entityAt(destination)
slog.Info("destination", slog.String("destination", destination.String()))
for _, e := range g.Entities {
if e.Selection.IsEnabled && e.Selection.Value.IsSelected {
e.MainAction(g, destination, entityAtDestination, moveMap)
}
}
}
if inpututil.IsMouseButtonJustReleased(ebiten.MouseButtonLeft) {
if g.Selection.IsActive(cursor) {
selector := g.Selection.Select(cursor)
for _, e := range g.Entities {
selector.Preselect(e.Position, e.RelBounds, &e.Selection)
}
selector.Select()
} else {
selector := selection.NewSingle(cursor)
for _, e := range g.Entities {
selector.Select(e.Position, e.RelBounds, &e.Selection)
}
}
g.Selection.Clear()
}
if inpututil.IsKeyJustReleased(KeySpawnRequest) {
for _, e := range g.Entities {
if !e.Selection.IsEnabled || !e.Selection.Value.IsSelected || !e.Spawn.IsEnabled {
continue
}
e.Spawn.Value.AddRequest(g)
}
}
}
func (g *Game) updatePatrolling(cursor physics.Point) {
if inpututil.IsMouseButtonJustReleased(ebiten.MouseButtonRight) {
destination := cursor.Div(100).Mul(100)
for _, e := range g.Entities {
if e.Selection.IsEnabled && e.Selection.Value.IsSelected {
Patrol(e.Position, e.Move, &e.Order, destination)
}
}
g.CurrentAction = Selecting
}
}
func (g *Game) Update() error {
x, y := ebiten.CursorPosition()
cursor := physics.Point{X: x, Y: y}
if inpututil.IsKeyJustReleased(ebiten.KeyEscape) {
g.CurrentAction = Selecting
slog.Info("selecting action")
}
if inpututil.IsKeyJustReleased(KeyPatrolRequest) {
g.CurrentAction = Patrolling
slog.Info("patrolling action")
}
switch g.CurrentAction {
case Selecting:
g.updateSelecting(cursor, g.getMoveMap())
case Patrolling:
g.updatePatrolling(cursor)
}
for _, e := range g.Entities {
physics.UpdateMove(&e.Move, &e.Position, g.getMoveMap())
e.UpdateOrder(g)
UpdateSpawn(g, &e.Spawn, e.Position)
}
return nil
}
func (g *Game) Layout(outsideWidth, outsideHeight int) (screenWidth, screenHeight int) {
return 3200, 2400
}
func main() {
for _, arg := range os.Args {
if arg == "--profile" {
f, err := os.Create("cpu.prof")
kcore.Expect(err, "could not create CPU profile")
defer f.Close()
kcore.Expect(pprof.StartCPUProfile(f), "could not start CPU profile")
defer pprof.StopCPUProfile()
}
}
logHandler := slog.NewTextHandler(os.Stdout, &slog.HandlerOptions{Level: slog.LevelDebug})
slog.SetDefault(slog.New(logHandler))
ebiten.SetWindowSize(640, 480)
ebiten.SetWindowTitle("Age of Empire")
icon, err := os.Open("icon-crop.jpg")
kcore.Expect(err, "failed to open icon")
defer icon.Close()
iconImg, _, err := image.Decode(icon)
kcore.Expect(err, "failed to decode icon")
ebiten.SetWindowIcon([]image.Image{iconImg})
game := &Game{
ResourceAmount: 150,
}
s, err := text.NewGoTextFaceSource(bytes.NewReader(goregular.TTF))
kcore.Expect(err, "failed to create font source")
game.FaceSource = s
ironMine := NewEntityBuilder().WithPosition(physics.Point{X: 1000, Y: 1000}).WithSolid(NewFilledRectangleImage(physics.Point{X: 100, Y: 100}, color.RGBA{0x80, 0x80, 0x80, 0xff})).WithResourceSource(1000).WithSelection("square", selection.Building).Build()
game.Entities = append(game.Entities, &ironMine)
townCenter := NewEntityBuilder().WithPosition(physics.Point{X: 1000, Y: 2000}).WithSolid(NewFilledRectangleImage(physics.Point{X: 100, Y: 100}, color.RGBA{0x0, 0x0, 0xff, 0xff})).WithResourceStorage().WithSelection("square", selection.Building).WithSpawn(NewSpawn(50, 1*time.Second)).Build()
game.Entities = append(game.Entities, &townCenter)
game.UnitBuilder = NewEntityBuilder().WithSolid(NewFilledCircleImage(100, color.White)).WithSelection("round", selection.Unit).WithMove().WithOrder().WithResourceGatherer(15)
for i := 0; i < 0; i++ {
spawnPosition, _ := physics.Closest(townCenter.Position.Value, physics.AdjacentPoints(townCenter.Position.Value), game.getMoveMap())
person := game.UnitBuilder.Build()
person.Position = ecs.C(spawnPosition)
game.Entities = append(game.Entities, &person)
}
game.CurrentAction = Selecting
ebiten.SetRunnableOnUnfocused(true)
kcore.Expect(ebiten.RunGame(game), "failed to run game")
}
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