39 lines
992 B
Lua
39 lines
992 B
Lua
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local tools = {}
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-- Get Table length
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function tools.table_length(T)
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local count = 0
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for _ in pairs(T) do count = count + 1 end
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return count
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end
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-- Pause system n seconds
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local clock = os.clock
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function tools.sleep(n) -- seconds
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local t0 = clock()
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while clock() - t0 <= n do end
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end
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-- Collision detection function
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function tools.check_circle_collision(circle1, circle2)
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local distance = math.sqrt((circle1.x - circle2.x) ^ 2 + (circle1.y - circle2.y) ^ 2)
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return distance <= circle1.radius + circle2.radius
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end
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-- Deep copy table
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function tools.clone_table(orig)
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local orig_type = type(orig)
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local copy
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if orig_type == 'table' then
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copy = {}
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for orig_key, orig_value in next, orig, nil do
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copy[tools.clone_table(orig_key)] = tools.clone_table(orig_value)
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end
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setmetatable(copy, tools.clone_table(getmetatable(orig)))
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else -- number, string, boolean, etc
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copy = orig
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end
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return copy
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end
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return tools
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