package gameobjects

import (
	"github.com/faiface/pixel"
	"github.com/faiface/pixel/pixelgl"
	//"fmt"
)

type Player struct {
	X, Y float64
	PlayerVec pixel.Vec
	sprFrame int
	spriteSheet pixel.Picture
	sprFrames []pixel.Rect	
	sprite *pixel.Sprite
	speed float64
}

func NewPlayer(win *pixelgl.Window, spriteSheet pixel.Picture) (*Player){
	var p *Player
	p.X = win.Bounds().Max.X/2
	p.Y = win.Bounds().Max.Y/2
	p.PlayerVec = pixel.Vec{
		X:win.Bounds().Max.X/2,
		Y:win.Bounds().Max.Y/2,
	}
	p.sprFrame = 9
	p.spriteSheet = spriteSheet
	p.sprFrames = createSpriteFrames(spriteSheet)
	p.sprite = pixel.NewSprite(spriteSheet, p.sprFrames[p.sprFrame])
	p.speed = 10.0
	return p
}

func (p *Player) Update(win *pixelgl.Window, dt int64) {
	
	speed := p.speed

	

	if win.Pressed(pixelgl.KeyA) { //left
		p.sprFrame = 6
		p.X -= speed
	}
	if win.Pressed(pixelgl.KeyD) { //Right
		p.sprFrame = 3
		p.X += speed
	}
	if win.Pressed(pixelgl.KeyS) { //Down
		p.sprFrame = 9
		p.Y -= speed
	}
	if win.Pressed(pixelgl.KeyW) { //up
		p.sprFrame = 0
		p.Y += speed
	}
	p.sprite.Set(p.spriteSheet, p.sprFrames[p.sprFrame])

	//p.PlayerVec.X += vecX
	//p.PlayerVec.Y += vecY
	
	p.PlayerVec = pixel.Vec {
		X: p.X,
		Y: p.Y,
	}
	//fmt.Println(p.PlayerVec.X,p.PlayerVec.Y)
}

func (p *Player) Render(win *pixelgl.Window) { //include batch later
	
	p.sprite.Draw(win, pixel.IM.Scaled(pixel.ZV, 4).Moved(p.PlayerVec))
}

func createSpriteFrames(spriteSheet pixel.Picture) ([]pixel.Rect) {
	var sprFrames []pixel.Rect
	var frameHeight, frameWidth float64 = 96, 96
	for y := spriteSheet.Bounds().Min.Y; y < frameHeight*4; y += 96 {
		for x := spriteSheet.Bounds().Min.X; x < frameWidth*3; x += 96 {
			sprFrames = append(sprFrames, pixel.R(x, y, x+96, y+96)) // (x, y, width, height) of frame
		}
	}
	return sprFrames
}