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package main
import (
"image/color"
"github.com/hajimehoshi/ebiten/v2"
"github.com/hajimehoshi/ebiten/v2/inpututil"
"github.com/hajimehoshi/ebiten/v2/vector"
)
type Tile struct {
*ebiten.Image
Size Point
Position Point
}
func NewTile(size Point, position Point, color color.Color) Tile {
image := ebiten.NewImage(int(size.X), int(size.Y))
image.Fill(color)
return Tile{Size: size, Position: position, Image: image}
}
var soilColor = color.RGBA{0x60, 0x40, 0x20, 0xff}
var soil = NewTile(Point{2800, 2000}, Point{200, 200}, soilColor)
type Selection struct {
IsActive bool
Start Point
}
type Game struct {
Persons []*Person
Selection Selection
}
func (g *Game) Update() error {
x, y := ebiten.CursorPosition()
if inpututil.IsMouseButtonJustPressed(ebiten.MouseButtonLeft) {
g.Selection.Start = Point{x, y}
g.Selection.IsActive = true
}
if inpututil.IsMouseButtonJustReleased(ebiten.MouseButtonRight) {
tileClick := Point{x - soil.Position.X, y - soil.Position.Y}
for _, p := range g.Persons {
futureBounds := Rectangle{
tileClick.Sub(p.size.Div(2)),
tileClick.Add(p.size.Div(2)),
}
if p.IsSelected && futureBounds.In(soil.Bounds()) {
p.MoveTo(tileClick)
}
}
}
if inpututil.IsMouseButtonJustReleased(ebiten.MouseButtonLeft) {
tileClick := Point{x - soil.Position.X, y - soil.Position.Y}
if g.Selection.IsActive && Distance(g.Selection.Start, Point{x, y}) > 10 {
for _, p := range g.Persons {
p.IsSelected = false
selectionBounds := Rectangle{g.Selection.Start.Sub(soil.Position), tileClick}.Canon()
if selectionBounds.Overlaps(p.CollisionBounds()) {
p.IsSelected = true
}
}
} else {
canBeSelected := true
for _, p := range g.Persons {
p.IsSelected = false
if tileClick.In(p.CollisionBounds()) {
p.IsSelected = canBeSelected
canBeSelected = false
}
}
}
g.Selection.IsActive = false
}
for _, p := range g.Persons {
p.Update()
}
return nil
}
func (g *Game) Draw(screen *ebiten.Image) {
screen.Fill(color.RGBA{0x80, 0xa0, 0xc0, 0xff})
soil.Fill(soilColor)
for _, p := range g.Persons {
bounds := p.Image().Bounds()
op := &ebiten.DrawImageOptions{}
op.GeoM.Translate(float64(p.Position.X-bounds.Dx()/2), float64(p.Position.Y-bounds.Dy()/2))
soil.DrawImage(p.Image(), op)
if p.IsSelected && p.move.IsActive {
vector.StrokeLine(soil.Image, float32(p.Position.X), float32(p.Position.Y), float32(p.move.Destination.X), float32(p.move.Destination.Y), 10.0, color.RGBA{256 * 3 / 16, 256 * 3 / 16, 256 * 3 / 16, 256 / 4}, true)
}
}
op := &ebiten.DrawImageOptions{}
op.GeoM.Translate(float64(soil.Position.X), float64(soil.Position.Y))
screen.DrawImage(soil.Image, op)
if g.Selection.IsActive {
x, y := ebiten.CursorPosition()
screenClick := Point{x, y}
vector.StrokeRect(screen, float32(g.Selection.Start.X), float32(g.Selection.Start.Y), float32(screenClick.X-g.Selection.Start.X), float32(screenClick.Y-g.Selection.Start.Y), 10.0, color.RGBA{256 * 3 / 16, 256 * 3 / 16, 256 * 3 / 16, 256 / 4}, true)
}
}
func (g *Game) Layout(outsideWidth, outsideHeight int) (screenWidth, screenHeight int) {
return 3200, 2400
}
func main() {
ebiten.SetWindowSize(640, 480)
ebiten.SetWindowTitle("Age of Empire")
game := &Game{}
mainPerson := NewPerson(Point{soil.Image.Bounds().Dx() / 2, soil.Image.Bounds().Dy() / 2})
nonPlayerPerson := NewPerson(Point{400, 400})
game.Persons = append(game.Persons, &mainPerson)
game.Persons = append(game.Persons, &nonPlayerPerson)
if err := ebiten.RunGame(game); err != nil {
panic(err)
}
}
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