tdkit

tdkit is a lightweight module to help building Tower Defense mechanics on Roblox. Developed by me.

Info

tdkit allows you to easily create pathways, move enemies along them, and detect intersections with towers' ranges.

Installation

• Pesde:

pesde add 0jewell/tdkit

Usage

Creating a pathway

local positions = {
    Vector3.new(0, 0, 0),
    Vector3.new(20, 0, 0),
    Vector3.new(30, 0, 10),
    Vector3.new(40, 0, 10),
}

local pathway = tdkit.from_positions(positions)

Creating a traveller (enemy)

local enemy = pathway.traveller({ speed = 8 })

while not enemy.is_at_end() do
    enemy.move(task.wait())
end

Creating a tower and checking intersections

local tower_position = Vector3.new(10, 0, 0)
local tower_range = 8

local intersections = tdkit.intersections_on_circle(pathway, tower_position, tower_range)

Checking if enemy is in tower range

local function is_in_bounds(enemy, hitbox)
    return enemy.current_length >= hitbox.min_distance and enemy.current_length <= hitbox.max_distance
end

for _, seg in ipairs(intersections) do
    if is_in_bounds(enemy, seg) then
        print('enemy is inside tower hitbox')
    end
end