@onPlaceBlock("minecraft:black_wool")
func onBlackWool {
    tellraw @a [{"selector":"@s"},{"text":" just placed a black wool."}]
    raycast("@s", "minecraft:black_wool", 0.01, 10, "setblock ~ ~ ~ iron_block")
}

@onPlaceBlock("minecraft:sand")
func onSand {
    tellraw @a [{"selector":"@s"},{"text":" just placed a sand."}]
    raycast("@s", "minecraft:sand", 0.01, 10, "setblock ~ ~ ~ gold_block")
}

// deco:load_and_tick.deco
@load
func init {
    tellraw @a {"text":"Datapack loaded!"}
}

@tick
func main {
    execute as @a[scores={timer=1..}] run function deco:execute
}

func execute {
    scoreboard players set @s timer 0
}

@tag("deco:core")
func coreFunction {
    # Core functionality here
}

@tag("deco:utils")
func utilityFunction {
    # Utility functions here
}

// deco:core/turn_stone_to_gold.deco
@onPlaceBlock("minecraft:stone")
func onStone {
    raycast("@s", "minecraft:stone", 0.01, 10, "function deco:core/afterstone")
}

func afterStone {
    setblock ~ ~ ~ minecraft:gold_block
    particle minecraft:end_rod ~ ~ ~ 0.1 0.1 0.1 0.1 1
}