--[[pod_format="raw",created="2026-02-10 12:09:44",modified="2026-02-10 12:27:08",revision=2]]
player = {
	origin = {
		x = nil,
		y = nil,
	},
	dir = nil,
}

col_bg = 1
col_ground = 6
fov = (120 / 180) * math.pi -- 120 horizontal

function _init()
	for i = 0, 31 do
		for j = 0, 31 do
			if mget(i, j) == 5 then -- player id
				player.origin.x = i + 0.5
				player.origin.y = j + 0.5
				player.dir = 0
				break
			end
		end
		if player.x then
			break
		end
	end
end

function cast_ray(origin, angle) end

function draw_minimap()
	local tile_size = 4
	local offset = 20
	map(0, 0, offset, offset, 31, 31, 0x0000, tile_size, tile_size)

	-- player
	local px = offset + (player.origin.x * tile_size)
	local py = offset + (player.origin.y * tile_size)
	circfill(px, py, 1, 5)

	local len = 3
	local px2 = px + math.cos(player.dir) * len
	local py2 = py + math.sin(player.dir) * len
	line(px, py, px2, py2, 6)
end

function _draw()
	cls(col_bg)
	rectfill(0, 135, 480, 270, col_ground)
	local angle_step = (fov / 480) / 360 * math.pi
	for x = 0, 480 - 1 do
		local angle = (player.dir - (fov / 2) + x * angle_step) % (2 * math.pi)
		local bloc, dist = cast_ray(player.origin, angle)
	end
	draw_minimap()
end

function _update()
	local speed = 0.1
	if btn(0) then
		player.dir -= speed
	end
	if btn(1) then
		player.dir += speed
	end
	if btn(2) then
		player.origin.x += math.cos(player.dir) * speed
		player.origin.y += math.sin(player.dir) * speed
	end
	if btn(3) then
		player.origin.x -= math.cos(player.dir) * speed
		player.origin.y -= math.sin(player.dir) * speed
	end
end