mirror of
https://github.com/bryanthaboi/gen1recomp
synced 2026-09-26 13:33:27 -04:00
bryanthaboi
49 lines
1.4 KiB
Lua
49 lines
1.4 KiB
Lua
package.path = "./?.lua;./?/init.lua;" .. package.path
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if not _G.love then _G.love = require("tests.love_stub") end
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local T = require("tests.harness")
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local check = T.check
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local Kit = require("src.ui.kit.Kit")
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local G = love.graphics
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local rec, alpha = {}, 1
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local oldSet, oldLine = G.setColor, G.line
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G.setColor = function(r, g, b, a) alpha = a or 1 end
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G.line = function(_, _, x2, y2)
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rec[#rec + 1] = { a = alpha, ang = math.atan2(y2 - 100, x2 - 100) }
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end
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local function sample(t)
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rec = {}
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Kit.scale = 1
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Kit.spinner(100, 100, 20, t)
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local head, best = 1, -1
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for i, v in ipairs(rec) do
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if v.a > best then best, head = v.a, i end
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end
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return rec, head
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end
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local r0, h0 = sample(0.0)
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check(#r0 == 12, "the ring is twelve ticks")
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local _, h1 = sample(0.1)
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check(h1 == (h0 % #r0) + 1, "the bright head advances clockwise one tick")
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local ahead = r0[(h0 % #r0) + 1]
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local behind = r0[((h0 - 2) % #r0) + 1]
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check(behind.a > ahead.a, "the fade trails the head instead of leading it")
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check(ahead.a < 0.1, "the tick the head is about to reach is the dimmest")
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local prev, monotonic = r0[h0].a, true
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for n = 1, #r0 - 1 do
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local v = r0[((h0 - 1 - n) % #r0) + 1]
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if v.a >= prev then monotonic = false end
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prev = v.a
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end
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check(monotonic, "and keeps falling off all the way round the trail")
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G.setColor, G.line = oldSet, oldLine
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T.finish("kit spinner trail")
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