Ore Scanner

local Glasses = peripheral.wrap("front")
local Scanner = peripheral.wrap("back")
local canvas = Glasses.canvas()

function DrawOres()
    for _, block in pairs(scanner.scan()) do
        --print(("The block at %d, %d, %d is %s"):format(block.x, block.y, block.z, block.name))

        local color = nil
        if (block.name == "minecraft:coal_ore" or block.name == "minecraft:deepslate_coal_ore") then
            color = 0x000000FF
        elseif (block.name == "minecraft:copper_ore" or block.name == "minecraft:deepslate_copper_ore") then
            color = 0xb56d00FF
        elseif (block.name == "minecraft:iron_ore" or block.name == "minecraft:deepslate_iron_ore") then
            color = 0xcfa1a1FF
        elseif (block.name == "minecraft:gold_ore" or block.name == "minecraft:deepslate_gold_ore") then
            color = 0xffd900FF
        elseif (block.name == "minecraft:lapis_ore" or block.name == "minecraft:deepslate_lapis_ore") then
            color = 0x0000ffFF
        elseif (block.name == "minecraft:diamond_ore" or block.name == "minecraft:deepslate_diamond_ore") then
            color = 0x00d2fcFF
        elseif (block.name == "minecraft:redstone_ore" or block.name == "minecraft:deepslate_redstone_ore") then
            color = 0xff0000FF
        elseif (block.name == "minecraft:emerald_ore" or block.name == "minecraft:deepslate_emerald_ore") then
            color = 0x45bd00FF
        elseif (block.name == "minecraft:ancient_debris") then
            color = 0x4f3000FF
        end


        if (color ~= nil) then
            canvas.clear()
            canvas.addDot({x=block.x, z=block.z}, color)
            canvas.addText({ x = block.x, y = block.z }, tostring(block.y))
        end
    end
end

-- Main --
while(true) do
    DrawOres()
    sleep(0.3)
end