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Creating Console Functions

LinkerLinker
in Construction Creations
My latest test is creating console functions that call code in the engine

My test was wrapping "GuiTSCtrl::project" into a script function, so you can call it like: playgui.project("0 0 100");. which will return to you where the point "0 0 100" will appear on your screen.

That was largely successful, and I used it to make this thing that puts a 2d box around every player in your view

Edit: another screenshot
  • screen2.JPG
  • screen1.jpg

Comments

  • LinkerLinker
    For any of you who are curious

    Here's the code to implement the console function, written for nasm assmbler
    The compiled binary is loaded into a new segment that is loaded to a3a000h, and during intialization of other console functions i have t2 call the init function 
    %define addCommandRetStr    0x426410 
%define ConGetReturnBuffer  0x42caa0
%define dSscanf             0x55b640
%define dSprintf            0x55b5e0
%define GuiTSCtrl_project   0x4d0b40

USE32
CPU PENTIUM

section .seg7 vstart=0xa3a000

init:
  push 3
  push 3
  push strProject
  push GuiTsCtrlProject
  push strProject
  push strGuiTSCtrl
  call addCommandRetStr
  add esp, 0x18
  retn


GuiTsCtrlProject:
  push ebp
  mov ebp,esp
  push esi
  sub esp,20h
  
  lea eax, [ebp+-8h]
  push eax
  lea eax, [ebp+-0ch]
  push eax
  lea eax, [ebp+-10h]
  push eax
  push strGGG 
  mov eax, [ebp+10h]
  mov eax, [eax+8h]  
  push eax
  call dSscanf
  add esp, 14h 
  
  lea eax, [ebp+-1Ch]
  push eax
  lea eax, [ebp+-10h]
  push eax
  mov ecx, [ebp+8h]    
  call GuiTSCtrl_project

  add esp, 8h
  push 100h
  call ConGetReturnBuffer
  add esp, 4h
  mov esi, eax 

  push eax
  push eax
  fld dword [ebp+-1ch]
  fstp qword [esp]
  push eax
  push eax
  fld dword [ebp+-18h]
  fstp qword [esp]
  push eax
  push eax
  fld dword [ebp+-14h]
  fstp qword [esp]
  push strGGG 
  push 100h
  push esi
  call dSprintf
  add esp, 36
  mov eax, esi

  lea esp, [ebp-4]
  pop esi
  pop ebp
  retn

strProject: db 'project',0
strGuiTSCtrl: db 'GuiTSCtrl',0
strGGG: db '%g %g %g',0

    here's the code to the box player thing, which is largly useless unless you have a modified executable that can do "project" (or a in-script version), and a way of getting the worldbox of the objects of interest
    $BP::boxCount=0;

function BP_Loop() {
  cancel($bploopsch);
  BP_ResetPool();
  
  %screenX = getword(playgui.getExtent(),0);
  %screenY = getword(playgui.getExtent(),1);
  for(%i=0;%i<ServerConnection.getCount();%i++) {
    %obj = ServerConnection.getObject(%i);
    if(%obj.getClassName() $= "Player") {
      //display the player if he faces the screen
      //is his center onscreen?
      %res = PlayGui.project(%obj.getWorldBoxCenter());
      if ( getWord(%res,0) > 0.8 && 
          getWord(%res,2) > 0 && getWord(%res,1) > 0 &&
          getWord(%res,2) < %screenX && getWord(%res,1) < %screenY) {
        //yes, he is, draw box
        BP_boxPlayer(%obj);
      }
    }
  }
  
  BP_HideRemainingBoxes();
  $bploopsch=schedule(16,0,"bp_loop");
}

function BP_boxPlayer(%obj) {
  %ctrl = BP_GetNextBox();
  
  //create a box that will encompass all the points of his worldbox
  %worldBox = %obj.getWorldBox();
  %minx = getword(%worldBox,0);
  %miny = getword(%worldBox,1);
  %minz = getword(%worldBox,2);
  %maxx = getword(%worldBox,3);
  %maxy = getword(%worldBox,4);
  %maxz = getWord(%worldBox,5);
  
  %pt0 = %minx SPC %miny SPC %minz;
  %pt1 = %maxx SPC %miny SPC %minz;  
  %pt2 = %maxx SPC %maxy SPC %minz;
  %pt3 = %minx SPC %maxy SPC %minz;
  %pt4 = %minx SPC %miny SPC %maxz;
  %pt5 = %maxx SPC %miny SPC %maxz;  
  %pt6 = %maxx SPC %maxy SPC %maxz;
  %pt7 = %minx SPC %maxy SPC %maxz;
  
  %screenX = getword(playgui.getExtent(),0);
  %screenY = getword(playgui.getExtent(),1);
  %minx=%screenX;
  %maxx=0;
  %miny=%screenY;
  %maxy=0;
  
  for(%i=0;%i<8;%i++) {
    %pt[%i]=getWords(PlayGui.project(%pt[%i]),1,2);
    %x = getWord(%pt[%i],1);
    %y = getWord(%pt[%i],0);
    if (%x < %minx && %x > 0)
      %minx=%x;
    if (%x > %maxx && %x < %screenX)
      %maxx=%x;
    if (%y < %miny && %y > 0)
      %miny=%y;
    if (%y > %maxy && %y < %screenY)
      %maxy=%y;
  }
  
  %ctrl.resize(%minx,%miny,%maxx-%minx,%maxy-%miny);
  
  %ctrl.setVisible(true);
}

//box pools
function BP_ResetPool() {
  $BP::nextBox=0;
}

function BP_GetNextBox() {
  if ($BP::nextBox == $BP::boxCount) {
    //create new box
    $BP::box[$BP::boxCount] = new HudZoom() {
    	profile = "ZoomHudProfile";
    	position = "0 0";
    	extent = "8 8";
    	visible = "0";
    	fillColor = "0.250000 0.250000 0.250000 0.250000";
    	frameColor = "0.000000 1.000000 0.000000 1.000000";
    	opacity = "1";
    	bp = true;
    };
    playgui.add($BP::box[$BP::boxCount]);
    $BP::boxCount++;
  }
  %ret = $BP::box[$BP::nextBox];
  $BP::nextBox++;
  return %ret;
}

function BP_HideRemainingBoxes() {
  for(%i=0;$BP::nextBox < $BP::boxCount;$BP::nextBox++)
    $BP::box[$BP::nextBox].setVisible(false);
}

function BP_cleanupErrantBoxes() {
  $BP::boxCount=0;
  for (%i=0;%i<playgui.getCount();%i++) {
    %obj = playgui.getObject(%i);
    if (%obj.getClassName() $= "HudZoom" && %obj.bp) {
      %obj.delete();
      %i--;
    }
  }
}
  • EEolk
    Sweet.
  • EmperorsChampEmperorsChamp
    No one knows what to say.
  • TThyth
    Or we're too busy hacking our games to make ServerConnection.getCount(), ServerConnection.getObject(%i), and %obj.blah() work.
  • EmperorsChampEmperorsChamp
    Who's we? you and Link?

    I'm talking about the general population of ConMod.

    ServerConnection.GetCount() already works in TGE :)
    so does every group for that matter. in server tree
    called by Tree(); (i found that function by accident too :D)
  • TThyth
    "We" is "me". Linker has already patched the relevant functions in his game, which is why he is able to use the script he created.

    I just haven't had the time to stab at the game in IDA.
  • EmperorsChampEmperorsChamp
    Ah right.
  • ZaxxmanZaxxman
    Or perhaps trying to guess at what the new mod is gonna be like when its finished....
    ...eh alv *shove* eh, eh....*shove*
  • LinkerLinker
    Yes Emp, the protection isn't there in Torque... its like they just removed it because they want to screw over n00b devs who don't pay attention

    As for patching
    437462 - listobjects
    4376BC - getobject
    42E93B - %obj.blah()

    getCount already returns the right count.
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