--!native
--!optimize 2
-- Compiled with roblox-ts v3.0.0
local TS = _G[script]
local Workspace = TS.import(script, TS.getModule(script, "@rbxts", "services")).Workspace
local PhysicsTools = {}
do
	local _container = PhysicsTools
	--[[
		*WIP
			 * calculates the vertical velocity for parabolic trajectory with horizontal speed
			 * @param horizontal_speed horizontal speed
			 * @param offset distance from launcher to target; (target.Position - launcher.Position);
			 
	]]
	local function CalculateTrajectoryVerticalVelocity(horizontal_speed, offset)
		local _offset = offset
		local _vector3 = Vector3.new(1, 0, 1)
		local horizontal_offset = _offset * _vector3
		local horizontal_distance = horizontal_offset.Magnitude
		--should be negative or positive
		local vertical_distance = offset.Y
		local vertical_speed = (vertical_distance * horizontal_speed + ((Workspace.Gravity / 2) * horizontal_distance * horizontal_distance) / horizontal_speed) / horizontal_distance
		return vertical_speed
	end
	_container.CalculateTrajectoryVerticalVelocity = CalculateTrajectoryVerticalVelocity
	--[[
		*
			 * @param point
			 * @param start start of the line
			 * @param finish end of the line
			 * @returns [t, position, is_on_the_line]
			 
	]]
	local function GetClosestPositionOnLine(point, start, finish)
		local _finish = finish
		local _start = start
		local line_offset = _finish - _start
		local _point = point
		local _start_1 = start
		local offset = _point - _start_1
		local t = offset:Dot(line_offset) / line_offset:Dot(line_offset)
		local position_of_line_offset = line_offset * t
		local position_on_line = start + position_of_line_offset
		return t, position_on_line, t >= 0 and t <= 1
	end
	_container.GetClosestPositionOnLine = GetClosestPositionOnLine
end
return {
	PhysicsTools = PhysicsTools,
}