[Y_Less]

This uses methods in this topic and addresses found by my (available in the memory address topic) to work. Vice City stores the last 30 characters pressed in an array in memory, once I found this the rest was easy(ish).

CODE

:newkeypresses       03A4: name_thread "keys" \\ Uses memory addresses A10942 - A10960 found by me - 30 byte array of last 30 characters pressed. \\ First we need to set up CyQ's ASM to do the reading: 0004: 8288?? = -1995422835&& 0004: 8292?? = 1342335705&& 0004: 8296?? = -1025694744&& 0004: 8300?? = 1949868543&& 0004: 8304?? = 495648893&& 0004: 8308?? = 8221756&& 0004: 8312?? = -1070589815&& 0004: 8316?? = 10011777&& 0004: 8320?? = 1599930368&& 0004: 8324?? = 79846238&& 0004: 8328?? = 272862464&& 0004: 8332?? = 23779721&& 0004: 8336?? = -587536304&& 0004: 8340?? = 950140866&& 0004: 8344?? = -1962902156&& 0004: 8348?? = 1949868800&& 0004: 8352?? = 1133314173&& 0004: 8356?? = 1792641296&& 0004: 8360?? = 568872961&& 0004: 8364?? = 822067931&& 0004: 8368?? = -1731952192&& 0004: 8372?? = 1560281088&& 0004: 8376?? = -1034199457&& 0004: 8380?? = 4&&     \\ Now set the OpCode pointers. 03FD: set_player -5035& handling_responsiveness  8532704&& 0124: write_mem_address  6850752&& value  8532745&& \\ Up to here sets up the memory reading code 0125: read_mem_address  10553666&& into $key 008B: 0@ =  1292?? \\ Then we read in a variable \\ Each key is 1 byte but we read 4 :newkeypressloop 0001: wait 100? ms 0125: read_mem_address  10553666&& into $key 00D6: if 0? 803c:   NOT $key == 0@ 004D: jump if false ££newkeypressloop :newkeypress 008B: 0@ =  $key \\ We need to strip the excess bytes but also preserve the data, we want the most recent key, so we need to remove the 3 higher bytes: 0016: 0@ /= 16777216&& 0012: 0@ *= 16777216&& 008B: 1@ =  $key 0062: 1@ -= 0@ \\ Now 1@ contains just the first byte which we can test. \\ Check it's the right code or jump to the next cheat. 00D6: if 0? 0039:   1@ == 65? 004D: jump if false ££newkeypressloop \\ If the last key pressed was 'A' this will be true. \\ Do whatever you want here 0002: jump ££newkeypressloop

If you want more keys to be pressed (e.g. to enter a cheat) you will need to test for larger numbers.

[Demarest]

And since this is for VC, the LC team can finally have authentic cheats. IF there's enough room to acomodate all that code.

Does it have to be one key at a time? Or can you check to see if GESUNDHEIT was the last X keys pressed? And if you can, do you have to use bit coding to strip apart a DWORD to test individual bytes?

BTW, your best contribution yet! I wish we could crack SCM-based mem-hacking for GTA3 and SA.

[Y_Less]

Just wait till you see what I've been working on the last day for this! The answer to about all your questions is YES (except the 3/SA part, not even looked into that yet, but we'll see) (and the bitcoding part, you CAN do it that way but I've a better way).

[Seemann]

Same method is available for San Andreas.

MA 0x969110 is the start of an array that keeps 30 last pressed keys in SA.
So, accessing to this address allows to create new keypress checks and even create new cheats/passwords in run-time.

Using this I've got simple integer value for an array index that points at this address: -229908.

Though,

CODE

0@ = -229908 008B: 1@ = &0(0@,1i)

stores last 4 chars to 1@.

I've written different variants how to check out one, two, three, four, five last chars and even 16 ones.

CODE

// custom keypresses, v. SA // EXAMPLE 1: TEST 1 key press (space) 0@ = -229908 while true  008B: 1@ = &0(0@,1i)  // get last keypresses  0085: 2@ = 1@          div(1@, 256)          // 1char 256, 2chars: 65536: 3chars: 16777216  mul(1@, 256)          // same  0062: 2@ -= 1@        // get needed number of chars (1)    if    2@ == 32 //0x20     // test if it's SPACE  then       03E5: text_box 'CHEAT1'  // Cheat activated     Break  end  wait 1000 end // EXAMPLE 2: TEST 2 keys ('NO') 0@ = -229908 while true  008B: 1@ = &0(0@,1i)  // get last keypresses  0085: 2@ = 1@          div(1@, 65536)        // 1char 256, 2chars: 65536: 3chars: 16777216  mul(1@, 65536)        // same  0062: 2@ -= 1@        // get needed number of chars (2)  if    2@ == 20047 //0x4e4f        // test if player typed NO  then      03E5: text_box 'CHEAT1'  // Cheat activated    Break  end  wait 1000 end // EXAMPLE 3: TEST 3 keys ('WOW') 0@ = -229908 while true  008B: 1@ = &0(0@,1i)     // get last keypresses  0085: 2@ = 1@          div(1@, 16777216)        // 1char 256, 2chars: 65536: 3chars: 16777216  mul(1@, 16777216)        // same  0062: 2@ -= 1@           // get needed number of chars  (3)  if    2@ == 5721943 //0x574f57         // test if player typed WOW  then      03E5: text_box 'CHEAT1'  // Cheat activated    Break  end  wait 1000 end // EXAMPLE 4: TEST 4 keys ('HACK') 0@ = -229908 while true  if    &0(0@,1i) == 1212236619 //0x4841434B  // test if player typed HACK  then    03E5: text_box 'CHEAT1'  // Cheat activated    Break  end  wait 1000 end // EXAMPLE 5: TEST 5 keys ('SANNY') // test 5th char 's' from address +4b, then test 'anny' from the beginning; //  addr      keys // -229908: X X X X    |  -229908: A N N Y // -229907: X X X O <- |  -229907: _ _ _ S                     while true  0@ = -229907 // +32bits; next 4 bytes/chars in the last keypresses block  008B: 1@ = &0(0@,1i)  0085: 2@ = 1@          div(1@, 256)  mul(1@, 256)  0062: 2@ -= 1@        // 5th char is the last in the second block:  if    2@ == 83 //0x53          // test if S is the 5th pressed key  then     0@ = -229908     008B: 3@ = &0(0@,1i)     if 3@ == 1095650905 //0x414E4E59  // test if player also typed ANNY after that     then         03E5: text_box 'CHEAT1'  // Cheat activated       Break     end      end  wait 1000 end       // EXAMPLE 6: TEST 16 keys: '1234567812345678' 0@ = -57477 while true  if    &0(0@,1v) == "8765432187654321" // test if last pressed key combo is "1234567812345678"  then    03E5: text_box 'CHEAT1'  // Cheat activated    Break  end  wait 1000 end

Edit:
Just realised that the code I posted works only for me (with newest version of SB), because SB v2.99 doesn't support hex numbers in a math expression. So, I converted these numbers to decimal format in order the code can be compiled.

This post has been edited by Seemann on Thursday, Nov 23 2006, 07:53

[Seemann]

You can check if ANY key is pressed via the mission scripts.

1. Open the keyslist
http://sannybuilder.com/dev/keycodes.htm
Find the key you need to check.

2. First column contains the index pointing to the key related memory address. Using the array's method of reading the memory you can get the current state of the key.

3. The keys located at the column KeyLo returns 0xFF when pressed. The keys located at the column KeyHi returns 0xFF0000 when pressed.

4. Read the mem addy using index and compare the value with the conforming constant.


Example1. Check ENTER

CODE

0@ = 304490 // Enter's index :loop wait 0 &0(0@,1i) == 0x00FF0000 // KeyHi jf @loop player.money($player_char) += 100 // Enter pressed!

Example2. Check TILDE (~)

CODE

0@ = 304550 // Tilde's index :loop wait 0 &0(0@,1i) == 0xFF // KeyLo jf @loop player.money($player_char) += 100 // Tilde pressed!

Example3. Combined checks: Num1+ Num2

CODE

0@ = 304484 // Num1,Num2 index :loop wait 0 &0(0@,1i) == 0x00FF00FF // Num1+Num2 jf @loop player.money($player_char) += 100 // Whoa! Num1+Num2 pressed!

All indexes are for version 1.0

[DIMICH]

How to use this in VC?