Dash levels lap skip script (BizHawk)

local function inject_old_y_tracker()
    -- storing the old_y used for the lap calculation in a variable that we can read at the end of the frame
    memory.write_u32_le(0x0C027C, 0x31EF0000) -- andi t7, 0x0          | clearing t7
    memory.write_u32_le(0x0C028C, 0x3C0F8007) -- lui t7, 0x8007        | t7 = 0x80070000
    memory.write_u32_le(0x0C0294, 0x35EF4900) -- ori t7, t7, 0x4900    | t7 = 0x80074900
    memory.write_u32_le(0x0C029C, 0x0012C880) -- sll t9, s2, 0x2       | t9 = 4 * player_id
    memory.write_u32_le(0x0C02A0, 0x00000000) -- nop                   | taking out the x > 0 from the logic
    memory.write_u32_le(0x0C02A4, 0x01F97820) -- add t7, t7, t9        | t7 = 0x80074900 + 4 * player_id
    memory.write_u32_le(0x0C02B0, 0x2858FE13) -- slti t8, v0, 0xFE13   | changing registers so we can save old_y
    memory.write_u32_le(0x0C02B4, 0x1700001D) -- bne t8, zero, 0x001d  | changing registers so we can save old_y
    memory.write_u32_le(0x0C02B8, 0xADE20000) -- sw v0, 0x0(t7)        | t7 <- old_y
end

local function read_pointer(address)
    x = memory.read_u32_le(address)
    if (x == 0) then
        return 0
    end
    return memory.read_u32_le(address) - 0x80000000
end

-- Variables
player_pointer = 0x09D530
y = 0
x = 0
old_y = 0
last_y = 0
even_frame = true
i = 0

while true do
    -- I'm always injecting the tracker every frame because it's less annoying when dealing with save states
    inject_old_y_tracker()

    -- Since Bash is a 30fps game, only gather data each 2 frames
    if even_frame then

        -- Read data from memory
        player_struct = read_pointer(player_pointer)
        x = memory.read_s32_le(player_struct + 0x10)
        y = memory.read_s32_le(player_struct + 0x18)
        old_y = memory.read_s32_le(0x074900)
    end

    -- If your old Y isn't the Y from the last frame, a mismatch happened
    if old_y ~= last_y then
        gui.text(2, 60, "Old Y mismatch", "yellow")
    end

    gui.text(2, 80, "Old y: " .. old_y, "white")
    gui.text(2, 100, "Y: " .. y, "white")

    -- Lap logic (lap skips happens because of old y mismatches due to collisions with A.Is)
    if x > 0 and old_y > -494 and y < -493 then
        gui.text(2, 120, "LAP COMPLETED" .. i, "green")
        if even_frame then
            i = i + 1
        end
    end

    gui.text(2, 140, "LAP #" .. i, "white")

    -- Only update the last_y in the odd frame
    if not even_frame then
        last_y = y
    end

    -- Change the parity of the frame
    even_frame = not even_frame

    emu.frameadvance()
end