local TILE_SIZE = 64

-- helper function check if a tile coordinate is within the bounds of the tilemap
local function within_bounds(x, y)
    local bx, by, bw, bh = tilemap.get_bounds("#level")
    return x >= bx and y >= by and x < (bx + bw) and y < (by + bh)
end

function init(self)
    msg.post(".", "acquire_input_focus")
end

function on_input(self, action_id, action)
    local tile_x = math.ceil(action.x / TILE_SIZE)
    local tile_y = math.ceil(action.y / TILE_SIZE)

    if within_bounds(tile_x, tile_y) then
        -- click to place a flower
        if action_id == hash("touch") and action.pressed then
            tilemap.set_tile("#level", "layer1", tile_x, tile_y, 77)
        end

        -- show tile info
        local tile = tilemap.get_tile("#level", "layer1", tile_x, tile_y)
        local text = ("x: %d y: %d tile: %d"):format(tile_x, tile_y, tile)
        label.set_text("#label", text)
    else
        local text = ("x: %d y: %d out of bounds"):format(tile_x, tile_y)
        label.set_text("#label", text)
    end
end