generator.lua2p

local Generator = {}

function Generator.path_points_fireflies(x, y, n)
	@@assert(type(x) == "number")
	@@assert(type(y) == "number")
	@@assert(type(n) == "number")
	local offset = 8
	local points = {x = x, y = y}
	local prev_x = x
	local prev_y = y

	for _ = 1, n - 1 do
		local px = love.math.random(prev_x - offset, prev_x + offset)
		local py = love.math.random(prev_y - offset, prev_y + offset)
		local p = {x = px, y = py}
		prev_x = px
		prev_y = py
		table.insert(points, p)
	end
	return points
end

function Generator.path_points_ants(x, y, ex, ey, n)
	@@assert(type(x) == "number")
	@@assert(type(y) == "number")
	@@assert(type(ex) == "number")
	@@assert(type(ey) == "number")
	@@assert(type(n) == "number")
	local points = {}
	local dx = 1
	local dy = (y <= ey) and -1 or 1
	local offset = 2

	for i = 0, n - 1 do
		local t = i/n
		local ox = love.math.random(-offset, offset)
		local oy = love.math.random(-offset, offset)
		local px = mathx.lerp(x, ex, t)
		local py = mathx.lerp(y, ey, t)

		px = px + ox * dx
		py = py + oy * dy
		dx = dx * -1
		dy = dy * -1
		table.insert(points, {x = px, y = py})
	end
	return points
end

function Generator.path_points_flies(x, y)
	@@assert(type(x) == "number")
	@@assert(type(y) == "number")
	local minx, maxx = 8, 16
	local miny, maxy = 6, 12

	--[[
	  b  c  d
	a    o    e
	  h  g  f
	--]]

	local hx = love.math.random(minx, maxx)
	local hx_h = hx * 0.5
	local hy = love.math.random(miny, maxy)
	local hy_h = hy * 0.75

	local o = vec2(x, y)
	local vecs = {
		o:sadd(-hx, 0), --a
		o:sadd(-hx_h, -hy_h), --b
		o:sadd(0, -hy), --c
		o:sadd(hx_h, -hy_h), --d
		o:sadd(hx, 0), --e

		o:sadd(hx_h, hy_h), --f
		o:sadd(0, hy), --g
		o:sadd(-hx_h, hy_h), --h
	}

	local points = {}
	local r = love.math.random(math.pi/6, math.pi/4)
	for _, v in ipairs(vecs) do
		v:rotate_around_inplace(r, o)
		table.insert(points, {x = v.x, y = v.y})
	end
	return points
end

return Generator