package render

import (
	"github.com/pnx/go-raytracer/graphics"
	"github.com/pnx/go-raytracer/math"
	"github.com/pnx/go-raytracer/world"
)

func DrawMiniMap(ctx *graphics.Context, camera math.Transform, level *world.Level) {
	const tileSize = 32
	const scale = float64(tileSize) / float64(world.TileSize)
	// offset := math.Vec2i32{X: 25, Y: 25}
	// size := math.Vec2i32{X: 200, Y: 100}

	ctx.DrawRect(0, 0, int32(level.W*tileSize)+3, int32(level.H*tileSize)+3, 0)

	for y := range level.H {
		for x := range level.W {
			if level.Wall(x, y) {
				ctx.DrawRect(int32(x*tileSize), int32(y*tileSize), tileSize, tileSize, 4)
			}
		}
	}

	// Camera Position
	cPos := camera.Position.Get().Scale(scale)
	ctx.DrawRect(int32(cPos.X-2), int32(cPos.Y-2), 4, 4, 2)

	// Rays
	for x := range ctx.Width() {
		hit := CastRay(camera, level, int(x), int(ctx.Width()))
		end := camera.Position.Get().AddVec(hit.Pos.Scale(world.TileSize)).Scale(scale)

		ctx.DrawLine(int32(cPos.X), int32(cPos.Y), int32(end.X), int32(end.Y), 2)
	}
}