package main

import door "git.red-green.com/RedGreen/doorgo"

type Camera struct {
	Size *Vec2
}

func (c *Camera) debugView(at *Vec2, w *World) string {
	out := ""
	t := at.Clone()
	t.X -= c.Size.X / 2
	t.Y -= c.Size.Y / 2
	for y := range make([]byte, c.Size.Y) {
		for x := range make([]byte, c.Size.X) {
			id := w.Get(uint64(t.X)+uint64(x), uint64(t.Y)+uint64(y))
			if id == 0 {
				out += " "
			} else {
				out += w.TileIndex.Tiles[id].Symbol
			}
		}
		out += "\r\n"
	}
	return out
}

func (c *Camera) View(at *Vec2, offset *Vec2, w *World) string {
	out := ""
	t := at.Clone()
	t.X -= c.Size.X / 2
	t.Y -= c.Size.Y / 2
	for y := range make([]byte, c.Size.Y) {
		for x := range make([]byte, c.Size.X) {
			id := w.Get(uint64(t.X)+uint64(x), uint64(t.Y)+uint64(y))
			if id != 0 {
				out += door.GotoS(int(offset.X)+x, int(offset.Y)+y) + door.ColorTextS(w.TileIndex.Tiles[id].Color) + w.TileIndex.Tiles[id].Symbol + door.Reset
			}
		}
	}
	return out
}