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Simple trigger script

 
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Turok2
How do I cheat?
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Joined: 16 Feb 2024
Posts: 8
PostPosted: Fri Feb 16, 2024 2:54 pm    Post subject: Simple trigger script Reply with quote
Hi guys, I'm a simple noob, but I'm very curious . In these two images below, the value of the first string (20002D43A7B) changes on columns 7C and 80, going from 0 (which is normal) to 90 (which is the action I'm interested in). How do I write a script that presses the P key on the keyboard every time the value changes from 0 to 90? Thank you very much, I can't figure it out. Sad

Tab 01.png
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Tab 01.png
Tab 02.png
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 Viewed:  1370 Time(s)

Tab 02.png
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LeFiXER
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PostPosted: Fri Feb 16, 2024 4:21 pm    Post subject: Reply with quote
No guarantee given, but this will press the P key if the values at both addresses = 90 (hex)
Code:

[ENABLE]
{$LUA}
if syntaxcheck then return end
if kpTimer then kpTimer.destroy() end

kpTimer = createTimer()
kpTimer.Interval = 200
kpTimer.OnTimer = function()
                              if readByte(0x20002D43A7C) == 0x90 and readByte(0x20002D43A80) == 0x90 then
                                doKeyPress(VK_P)
                              end
                             end
{$ASM}
[DISABLE]
{$LUA}
if syntaxcheck then return end
kpTimer.destroy()
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Turok2
How do I cheat?
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Joined: 16 Feb 2024
Posts: 8
PostPosted: Fri Feb 16, 2024 4:37 pm    Post subject: Reply with quote
ok i try it and lua say this message:

[ENABLE]
{$LUA}
if syntaxcheck then return end
if kpTimer then kpTimer.destroy() end

kpTimer = createTimer()
kpTimer.Interval = 200
kpTimer.OnTimer = function()
if readByte(0x20002D43A7C) == 0x90 and readByte(0x20002D43A80) == 0x90 then
doKeyPress(VK_P)
end
end
{$ASM}
[DISABLE]
{$LUA}
if syntaxcheck then return end
kpTimer.destroy()

Script Error:[string "[ENABLE]
..."]:1: unexpected symbol near '['


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AylinCE
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PostPosted: Fri Feb 16, 2024 5:41 pm    Post subject: Reply with quote
In my case the code works fine.

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ek1.PNG

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ParkourPenguin
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PostPosted: Fri Feb 16, 2024 5:50 pm    Post subject: This post has 1 review(s) Reply with quote
You're calling destroy twice. I don't know if CE catches it, but it's a bad thing to do. Set the global variable to nil after it's destroyed.

I like to put that cleanup code above [ENABLE] so it's always run even if the script is disabled without executing the disable section.
Code:
{$lua}
if syntaxcheck then return end
if my_timer then my_timer.destroy(); my_timer = nil end

[ENABLE]

my_timer = createTimer()
...

[DISABLE]
-- empty: timer destroyed above


Turok2 wrote:
unexpected symbol near '['
That code LeFiXER posted is an AA script, not a Lua script.
If you want to use the Lua script window, use this:
Code:
if kpTimer then kpTimer.destroy(); kpTimer = nil end

kpTimer = createTimer()
kpTimer.Interval = 200
kpTimer.OnTimer = function()
  if readByte(0x20002D43A7C) == 0x90 and readByte(0x20002D43A80) == 0x90 then
    doKeyPress(VK_P)
  end
end
You can't exactly turn it off once you execute this like you can an AA script.
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Turok2
How do I cheat?
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PostPosted: Fri Feb 16, 2024 5:53 pm    Post subject: Reply with quote
i love you all guys, it works! THANK YOU!
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LeFiXER
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PostPosted: Fri Feb 16, 2024 8:21 pm    Post subject: Reply with quote
ParkourPenguin wrote:
You're calling destroy twice. I don't know if CE catches it, but it's a bad thing to do. Set the global variable to nil after it's destroyed.


Noted, thanks. I seldom use globals and wasn't sure if it was necessary to handle it separately; however, correct me if I'm wrong, the enable/disable sections are independent of one another, aren't they?
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AylinCE
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PostPosted: Fri Feb 16, 2024 9:43 pm    Post subject: Reply with quote
I tried 3 variants and found it works.

v1:
Code:
[ENABLE]
{$LUA}
if syntaxcheck then return end
if kpTimer then kpTimer.destroy() end

kpTimer = createTimer()
kpTimer.Interval = 2000
 kpTimer.OnTimer = function()
  doKeyPress(VK_P)
  print(1000)
 end

{$ASM}

[DISABLE]

{$LUA}
-- kpTimer.Enabled = false -- It will return an undefined local error!
if syntaxcheck then return end
if kpTimer then kpTimer.destroy() end -- For the "Disable" switch, it will act as stopping the timer!


v2:
Code:
[ENABLE]
{$LUA}
if syntaxcheck then return end
--if kpTimer then kpTimer.destroy() end

kpTimer = createTimer()
kpTimer.Interval = 200
 kpTimer.OnTimer = function()
  doKeyPress(VK_P)
  print(1000)
 end

{$ASM}

[DISABLE]

{$LUA}
-- kpTimer.Enabled = false -- It will return an undefined local error!
if syntaxcheck then return end
if kpTimer then kpTimer.destroy() end -- For the "Disable" switch, it will act as stopping the timer!



It's especially surprising that scenario 3 stops the timer in case of "active=false".
It's nice that @ParkourPenguin caught this detail.

v3:

Code:
{$LUA}
if syntaxcheck then return end
if kpTimer then kpTimer.destroy() end

[ENABLE]

kpTimer = createTimer()
kpTimer.Interval = 2000
 kpTimer.OnTimer = function()
  doKeyPress(VK_P)
  print(1000)
 end

[DISABLE]


Result:
The following detail is revealed;

script.Active = true
(In the script code; the line of code between the first line and "Disable" is activated (Execute).)

script.Active = false
(All lines are activated except the lines between "Enable" - "Disable")
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ParkourPenguin
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PostPosted: Fri Feb 16, 2024 10:28 pm    Post subject: Reply with quote
LeFiXER wrote:
the enable/disable sections are independent of one another, aren't they?
They're independent in the sense that only one of them is run at a time.

Basically, the lines after [ENABLE] / [DISABLE] are only kept if the script is being enabled or disabled respectively. Above [ENABLE], it's always kept.
e.g. this script:
Code:
{$lua}
if syntaxcheck then return end

[ENABLE]
print'enabled'

[DISABLE]
print'disabled'

When this is enabled, CE executes this AA script:
Code:
{$lua}
if syntaxcheck then return end

print'enabled'

And when it's disabled, it executes this AA script:
Code:
{$lua}
if syntaxcheck then return end

print'disabled'

Local variables aren't kept between invocations.
Code:
{$lua}
if syntaxcheck then return end

[ENABLE]
local v = 5
print(v)  -- prints 5

[DISABLE]
print(tostring(v))  -- prints nil

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LeFiXER
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PostPosted: Sat Feb 17, 2024 12:18 am    Post subject: Reply with quote
Thanks for the clarification. Your wisdom is always welcome. Smile
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Turok2
How do I cheat?
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PostPosted: Sat Feb 17, 2024 1:19 am    Post subject: Reply with quote
Ok daddy I've created the Lua script by extending it with additional values at other addresses. But I don't want to enter Cheat Engine every time and press Ctrl+Alt+L and click Execute Script. Can I bring it to the initial table, where I marked the red lines, and then activate it by checking the box? Thanks a lot! What a great community!

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LeFiXER
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PostPosted: Sat Feb 17, 2024 3:37 am    Post subject: Reply with quote
Open the Memory View window > Click Tools on the menu > Select Auto Assemble from this menu > Paste your code in this new window, it will be blank to begin with. You can either use a template by clicking Template on the menu followed by Cheat Table Framework (basic framework for a script), and make sure that the [ENABLE] and [DISABLE] sections have the relevant code. Or you can type in [ENABLE]/[DISABLE] yourself.

It will look similar to what I posted initially at the beginning of this thread.
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