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package main
import (
"age_of_empires/ecs"
"age_of_empires/physics"
"image/color"
"github.com/hajimehoshi/ebiten/v2"
)
type Entity struct {
Position ecs.Component[physics.Point]
Image ecs.Component[*ebiten.Image]
Selection ecs.Component[Selection]
Move ecs.Component[physics.Move]
Order ecs.Component[Order]
ResourceGatherer ecs.Component[ResourceGatherer]
ResourceSource ecs.Component[ResourceSource]
ResourceStorage ecs.Component[ResourceStorage]
Spawn ecs.Component[Spawn]
}
func (e Entity) Bounds() physics.Rectangle {
return physics.Rectangle{
Min: e.Position.Value,
Max: e.Position.Value.Add(e.Image.Value.Bounds().Size()),
}
}
type EntityBuilder Entity
func (b EntityBuilder) WithPosition(position physics.Point) EntityBuilder {
b.Position = ecs.C(position)
return b
}
func (b EntityBuilder) WithImage(image *ebiten.Image) EntityBuilder {
b.Image = ecs.C(image)
return b
}
var red = color.RGBA{0xff, 0x00, 0x00, 0xff}
func (b EntityBuilder) WithSelection(haloKind string) EntityBuilder {
b.Selection = ecs.C(Selection{
IsSelected: false,
Halo: nil,
})
switch haloKind {
case "round":
b.Selection.Value.Halo = NewStrokeCircleImage(110, SELECTION_HALO_WIDTH, red)
case "square":
b.Selection.Value.Halo = NewStrokeRectangleImage(physics.Point{X: 110, Y: 110}, SELECTION_HALO_WIDTH, red)
}
return b
}
func (b EntityBuilder) WithResourceStorage() EntityBuilder {
b.ResourceStorage = ecs.C(ResourceStorage{})
return b
}
func (b EntityBuilder) WithResourceSource(amount int) EntityBuilder {
b.ResourceSource = ecs.C(ResourceSource{Remaining: amount})
return b
}
func (b EntityBuilder) WithSpawn(spawn Spawn) EntityBuilder {
b.Spawn = ecs.C(spawn)
return b
}
func (b EntityBuilder) WithMove() EntityBuilder {
b.Move = ecs.C(physics.Move{IsActive: false})
return b
}
func (b EntityBuilder) WithOrder() EntityBuilder {
b.Order.IsEnabled = true
return b
}
func (b EntityBuilder) WithResourceGatherer(maxCapacity int) EntityBuilder {
b.ResourceGatherer = ecs.C(ResourceGatherer{MaxCapacity: maxCapacity})
return b
}
func (b EntityBuilder) Build() Entity {
return Entity(b)
}
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