game.go

package main

import (
	"bytes"
	"engo.io/engo"
	"engo.io/engo/common"
	"engo.io/ecs"
	"image/color"
	"golang.org/x/image/font/gofont/gosmallcaps"
	"./systems"
)

type myScene struct {}

func (*myScene) Type() string { return "myGame" }

func (*myScene) Preload() {
	//"tilemap/tilesheet_grass.png"
	//https://pipoya.net/sozai/
	engo.Files.Load("pics/greenoctocat.png", "pics/ghost.png", "tilemap/tilesheet_grass.png", "tilemap/tilesheet_snow.png")
	engo.Files.LoadReaderData("go.ttf", bytes.NewReader(gosmallcaps.TTF))
	common.SetBackground(color.RGBA{255, 250, 220, 0})
}

func (*myScene) Setup(u engo.Updater){
	engo.Input.RegisterButton("MoveRight", engo.KeyD, engo.KeyArrowRight)
	engo.Input.RegisterButton("MoveLeft", engo.KeyA, engo.KeyArrowLeft)
	engo.Input.RegisterButton("Jump", engo.KeySpace)
	world, _ := u.(*ecs.World)
	world.AddSystem(&common.RenderSystem{})
	world.AddSystem(&systems.TileSystem{})
	world.AddSystem(&systems.PlayerSystem{})
	world.AddSystem(&systems.EnemySystem{})
}

func (*myScene) Exit() {
	engo.Exit()
}

func main(){
	opts := engo.RunOptions{
		Title:"myGame",
		Width:400,
		Height:300,
		StandardInputs: true,
		NotResizable:true,
	}
	engo.Run(opts,&myScene{})
}