networkzero/client/elements/block.go

package elements

import (
	"client/gamedata"
	"image/color"
	"math"

	"github.com/hajimehoshi/ebiten/v2"
)

type Block struct {
	Sprite   *ebiten.Image
	cycle    int
	position gamedata.Coordinates
	target   gamedata.Coordinates
	hit      bool
	clr      color.RGBA
}

func NewBlock() *Block {
	return &Block{
		Sprite: ebiten.NewImage(20, 20),
		cycle:  0,
		clr:    color.RGBA{R: 0xff, G: 0x00, B: 0x00, A: 0x00},
	}
}

func (b *Block) Update() {

	dx := b.target.X - b.position.X
	dy := b.target.Y - b.position.Y

	delta := math.Sqrt(dx*dx + dy*dy)
	angle := math.Atan2(dy, dx)
	if delta > 0.5 {
		b.position.X += delta * math.Cos(angle) / 2
		b.position.Y += delta * math.Sin(angle) / 2
	}

	b.cycle++
}

func (b *Block) Draw() {
	b.Sprite.Clear()
	b.Sprite.Fill(b.clr)
}

func (b *Block) SetPosition(pos gamedata.Coordinates) {
	b.position = pos
}

func (b *Block) GetPosition() gamedata.Coordinates {
	return b.position
}

func (b *Block) SetTargetPosition(pos gamedata.Coordinates) {
	b.target = pos
}

func (b *Block) GetTargetosition() gamedata.Coordinates {
	return b.target
}

func (b *Block) GetHit() bool {
	return b.hit
}

func (b *Block) SetColor(clr color.RGBA) {
	b.clr = clr
}