Is AIEntityGoToPosition working?

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Corno_1

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Posted: 27th Dec 2017 19:56

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Hi guys,
I want to create my own AI at the moment, so it do exactly what I want and I not must use the standard overthought scripts which are more complicated to read and to understand than ever before.

So I tried to get my head into how it works and I have my first problem:

+ Code Snippet


local searchPlr = 0
function hide_and_seek_init(e)
  CharacterControlManual(e)
  AIObjNo = g_Entity[e]['obj']
  AISetEntityControl(AIObjNo,AI_MANUAL)
  ai_bot_oldhealth[e] = g_Entity[e]['health']
  ai_bot_substate[e] = 0
  ai_bot_targetx[e] = nil
  ai_bot_pointtime[e] = -1
  ai_bot_patroltime[e] = 0
  ai_bot_targetx[e] = g_Entity[e]['x']
  ai_bot_targety[e] = g_Entity[e]['y']
  ai_bot_targetz[e] = g_Entity[e]['z']
end

function hide_and_seek_main(e)
  if searchPlr == 0 then
    Prompt("Press E to search plr")
    MoveForward(e,0.0)
  end
  if searchPlr == 1 then
    Prompt("Press Q to stop search")
    MoveForward(e,AIGetEntitySpeed(AIObjNo))
    AIEntityGoToPosition(g_Entity[e]['obj'],g_PlayerPosX-100,g_Entity[e]['y'],g_PlayerPosZ-100)
  end
  if g_KeyPressE==1 then
    searchPlr = 1
  end
  if g_KeyPressQ == 1 then
    searchPlr = 0
  end
end

This is my script and the AI should just go in the near of the player when I press E. It is a flat map with a single character.
But the AI just moves forward(I know there is the moveforward command).
Then I read the manual and it says:

+ Code Snippet

This command sets the entity's destination to the specified position, the entity will immediately calculate a path to the new destination and begin moving towards it. If the destination lies inside an obstacle an attempt will be made to choose the closest point which is not inside an obstacle. If this fails, or the path to the destination is blocked completely by obstacles the entity will not move.

So did I miss something? Is the preview broken in this part? Or is it just my game guru?

I would be happy if someone can answer my question.

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smallg

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Posted: 28th Dec 2017 07:26

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You've only told it to go forwards

You now control the AI in 2 parts, 1 is the physics side of things which is controlled with commands like AIEntityGoToPosition (you won't see any visual effect but its needed for obstacle avoidance etc), while the other side of things are controlled by MoveForward etc (this will be visible but you will pass over obstacles or get incorrect results if it doesn't match the physics side.

So to answer your question, yes it works but you also need to update the rotation of your AI to match the physics (look for something like AIEntitySetRotation or maybe AISetRotation).

lua guide for GG
https://steamcommunity.com/sharedfiles/filedetails/?id=398177770
windows 10
i5 @4ghz, 8gb ram, AMD R9 200 series , directx 11

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smallg

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Posted: 28th Dec 2017 16:28

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here is the command to rotate your AI
SetRotation(e,0,AIGetEntityAngleY(g_Entity[e]['obj']),0)

lua guide for GG
https://steamcommunity.com/sharedfiles/filedetails/?id=398177770
windows 10
i5 @4ghz, 8gb ram, AMD R9 200 series , directx 11

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Corno_1

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Posted: 28th Dec 2017 20:22

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Quote: "You now control the AI in 2 parts"

Now it makes sense. Thanks a lot

When I update the position it works like I wanted it

Here is the script for my path finding tests:

+ Code Snippet

local searchPlr = 0
function hide_and_seek_init(e)
  CharacterControlManual(e)
  AIObjNo = g_Entity[e]['obj']
  AISetEntityControl(AIObjNo,AI_MANUAL)
end

function hide_and_seek_main(e)
  if searchPlr == 0 then
    Prompt("Press E to search plr")
    MoveForward(e,0.0)
  end
  if searchPlr == 1 then
    Prompt("Press Q to stop search")
    MoveForward(e,AIGetEntitySpeed(AIObjNo))
    AIEntityGoToPosition(g_Entity[e]['obj'],g_PlayerPosX-100,g_Entity[e]['y'],g_PlayerPosZ-100)
    SetRotation(e,0,AIGetEntityAngleY(g_Entity[e]['obj']),0)
    AISetEntityPosition(AIObjNo,GetEntityPositionX(e),GetEntityPositionY(e),GetEntityPositionZ(e))
  end
  if g_KeyPressE==1 then
    searchPlr = 1
  end
  if g_KeyPressQ == 1 then
    searchPlr = 0
  end
end

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Scripts / Is AIEntityGoToPosition working?