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main.go
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main.go
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package main
import (
"game/myds/elm"
"game/myds/elm/png/rnd"
"image"
_ "image/png"
"log"
"math/rand"
"time"
"github.com/hajimehoshi/ebiten/v2"
)
type Game struct {
cp elm.CameraP
ops elm.Ops
wps elm.Wpns
count int
rX int
}
func NewGame() *Game {
cp0 := &elm.CameraP{}
cp0.InitialPosition()
g := &Game{cp: *cp0}
g.rX = cp0.PX
g.init()
return g
}
func (g *Game) init() {
rand.Seed(time.Now().UnixNano())
img1 := rnd.MpRand(rand.Intn(8) + 1)
elm.BgImage = ebiten.NewImageFromImage(img1)
}
func (g *Game) Update() error {
g.count++
if ebiten.IsKeyPressed(ebiten.KeyA) {
g.rX -= elm.Bgspeed
g.cp.Mv = elm.Left
}
if ebiten.IsKeyPressed(ebiten.KeyD) {
g.rX += elm.Bgspeed
g.cp.Mv = elm.Right
}
g.rX = elm.BgBoundrs(g.rX)
g.cp.Update(g.rX, g.ops.Others, g.wps.Wpns)
g.otherCret()
g.wpnCret()
return nil
}
func (g *Game) Draw(screen *ebiten.Image) {
op := &ebiten.DrawImageOptions{}
op.GeoM.Reset()
lcx := elm.ScreenWidth / 2
rcx := elm.BgWidth - elm.ScreenWidth/2
var r image.Rectangle
//left camera
if g.rX < lcx {
r = image.Rect(0, 0, elm.ScreenWidth, elm.ScreenHeight)
}
//middle camera
if g.rX >= lcx && g.rX < rcx {
r = image.Rect(g.rX-elm.ScreenWidth/2, 0, g.rX+elm.ScreenWidth/2, elm.ScreenHeight)
}
//right camera
if g.rX >= rcx && g.rX <= elm.BgWidth {
r = image.Rect(elm.BgWidth-elm.ScreenWidth, 0, elm.BgWidth, elm.ScreenHeight)
}
screen.DrawImage(elm.BgImage.SubImage(r).(*ebiten.Image), op)
//drwa pc
g.cp.Draw(screen)
//draw others
for _, o := range g.ops.Others {
if o != nil {
o.Draw(screen)
}
}
//drwa wps
for _, w := range g.wps.Wpns {
if w != nil {
w.Draw(screen)
}
}
}
func (g *Game) Layout(outsideWidth, outsideHeight int) (int, int) {
return elm.ScreenWidth, elm.ScreenHeight
}
func main() {
ebiten.SetWindowSize(elm.ScreenWidth, elm.ScreenHeight)
ebiten.SetWindowTitle("my ft ds")
g := NewGame()
if err := ebiten.RunGame(g); err != nil {
log.Fatal(err)
}
}
//enmy creat and delete
func (g *Game) otherCret() {
if g.count%240 == 0 && g.ops.Num < elm.Onum {
opNew := elm.Other{}
opNew.InitialPosition()
g.ops.Num += 1
g.ops.Others = append(g.ops.Others, &opNew)
}
if g.ops.Num >= 1 {
for i := g.ops.Num; i > 0; i-- {
g.ops.Others[i-1].Update(&g.cp)
if g.ops.Others[i-1].DeathTime == 1 {
g.ops.Others = append(g.ops.Others[:i-1], g.ops.Others[i:]...)
g.ops.Num--
}
}
}
}
//wpn creat and delete
func (g *Game) wpnCret() {
if g.count%360 == 0 && g.wps.Num < elm.Wpnum {
wpNew := elm.Wpn{}
wpNew.InitialPosition()
g.wps.Num += 1
g.wps.Wpns = append(g.wps.Wpns, &wpNew)
}
if g.wps.Num >= 1 {
for i := g.wps.Num; i > 0; i-- {
g.wps.Wpns[i-1].Update(&g.cp, g.ops.Others)
if g.wps.Wpns[i-1].Flytime < 0 {
g.wps.Num -= 1
g.wps.Wpns = append(g.wps.Wpns[:i-1], g.wps.Wpns[i:]...)
}
}
}
}