Impact system

[LukasPJ]

This is the Impact System from the SpellSystem I created. It's an useful system for, well having an impact on the scene.. Like do something to all enemies in a box, or do something multiple times over a duration. It was created with spells in mind, but can probably be used for other things.

There are 5 available impact classes:

• AOEImpact - Circular impact
  
• BoxImpact - What it says on the tin
  
• CubeImpact - Likewise
  
• ConeImpact - Likewise
  
• DOTImpact - Happens x times with [y] milliseconds interval between each impact

Examples of use (from my spellsystem examples):

%aoe = new ConeImpact(){       
   SourceObject = %src;       
   Start = %pos;
   End = VectorAdd(%pos, VectorScale(%eye, 10));     
   Radius = 2;
   TypeMask =  $TypeMasks::StaticShapeObjectType |                    
               $TypeMasks::StaticTSObjectType;       
   CallBack = "ConeCallback";    
};   
 
function ConeImpact::ConeCallback(%this, %src, %tgt) 
{    
   %projectile = ImpactProjectile;    
   ThrowHomingBezierProjectile(%src,%tgt,%projectile,true,"0 0 12"); 
}

 

%dotimpact = new DOTImpact(){
  TickMS = 100;
  TickCount = 15;
 
  CallBack = "FrostBarrageCB";
  sourceObject = %spell.getSource();
 
  // Dynamic variables
  Target = %spell.getTarget();
};
 
function DOTImpact::FrostBarrageCB(%this, %src)
{
   %weights = GetRandomVector(-3, 3, -3, 3, 0, 3);
   ThrowHomingBezierProjectile(%src, %this.Target, FrostShardProjectile, true, %weights);
}

 

Make these changes to the SceneContainer, and then download the files in: Impacts.zip and add them to the project.

[Gibby]

Do I need this to make it work?

from ConeImpact:

 

#include "T3D\fx\ImprovedParticle\IPSCore.h"

[LukasPJ]

Do I need this to make it work?

from ConeImpact:

 

#include "T3D\fx\ImprovedParticle\IPSCore.h"

 

I don't think so.. I may have been in a bit of a hurry to get it out there, try deleting that line, it should be okay :P

[Gibby]

@Lukas:

Tried using your suggestion but Cone, Cube and BoxImpact all have the same error:

 

c:\torque\363_vehiculo\my projects\vehiculo363\source\t3d\impacts\boximpact.cpp(37): error C2039: 'initBoxSearch' : is not a member of 'SceneContainer'
16>          c:\torque\363_vehiculo\engine\source\scene\scenecontainer.h(138) : see declaration of 'SceneContainer'

 

Are there other changes I need to make?

[LukasPJ]

@Gibby did you remember to make these changes? They might be a little hard to notice in the post :)

[Gibby]

Ah Snap! I'd commented those changes out troubleshooting and forgot to uncomment them. I got past the previous error, now I get:

 

16>     Creating library ../../../game/Vehiculo363_DEBUG DLL.lib and object ../../../game/Vehiculo363_DEBUG DLL.exp
16>DOTImpact.obj : error LNK2001: unresolved external symbol "public: virtual void __thiscall Impact::interpolateTick(float)" (?interpolateTick@Impact@@UAEXM@Z)
16>Impact.obj : error LNK2019: unresolved external symbol "public: virtual void __thiscall Impact::interpolateTick(float)" (?interpolateTick@Impact@@UAEXM@Z) referenced in function "public: class std::basic_string<char,struct std::char_traits<char>,class std::allocator<char> > & __thiscall std::basic_string<char,struct std::char_traits<char>,class std::allocator<char> >::assign(char const *)" (?assign@?$basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@@std@@QAEAAV12@PBD@Z)
16>AOEImpact.obj : error LNK2001: unresolved external symbol "public: virtual void __thiscall Impact::interpolateTick(float)" (?interpolateTick@Impact@@UAEXM@Z)
16>BoxImpact.obj : error LNK2001: unresolved external symbol "public: virtual void __thiscall Impact::interpolateTick(float)" (?interpolateTick@Impact@@UAEXM@Z)
16>ConeImpact.obj : error LNK2001: unresolved external symbol "public: virtual void __thiscall Impact::interpolateTick(float)" (?interpolateTick@Impact@@UAEXM@Z)
16>CubeImpact.obj : error LNK2001: unresolved external symbol "public: virtual void __thiscall Impact::interpolateTick(float)" (?interpolateTick@Impact@@UAEXM@Z)
16>DOTImpact.obj : error LNK2001: unresolved external symbol "public: virtual void __thiscall Impact::processTick(void)" (?processTick@Impact@@UAEXXZ)
16>Impact.obj : error LNK2001: unresolved external symbol "public: virtual void __thiscall Impact::processTick(void)" (?processTick@Impact@@UAEXXZ)
16>AOEImpact.obj : error LNK2001: unresolved external symbol "public: virtual void __thiscall Impact::processTick(void)" (?processTick@Impact@@UAEXXZ)
16>BoxImpact.obj : error LNK2001: unresolved external symbol "public: virtual void __thiscall Impact::processTick(void)" (?processTick@Impact@@UAEXXZ)
16>ConeImpact.obj : error LNK2001: unresolved external symbol "public: virtual void __thiscall Impact::processTick(void)" (?processTick@Impact@@UAEXXZ)
16>CubeImpact.obj : error LNK2001: unresolved external symbol "public: virtual void __thiscall Impact::processTick(void)" (?processTick@Impact@@UAEXXZ)
16>../../../game/Vehiculo363_DEBUG DLL.dll : fatal error LNK1120: 2 unresolved externals

 

AOETmpact didn't have an include for IPScore, so I think I may have a different problem - any ideas?

[LukasPJ]

@Gibby that seems it's the same issue as with the Tweening.

Just change Impact.h line 22-23 to this:

 

virtual void interpolateTick( F32 delta ) {};
virtual void processTick() {};

[Gibby]

@LukasPJ: AHHHH YEAH! Thank you so much for sharing this...

[Gibby]

@LukasPJ: 'Nother question: Is it possible to mount an impactCone to an object? i'd like to attach one to a rocket to simulate the thrust exhaust...

[LukasPJ]

@Gibby such that the exhaust of the rocket deals damage?

[Gibby]

@LukasPJ:

Exactly!!! :twisted:

[LukasPJ]

Well for that I'd use a DoTImpact, if you know for how long time the rocket is flying, otherwise just schedule a function that creates a ConeImpact every 200ms or something.

[Gibby]

@LukasPJ:

Thanks so much! I'll have 'show-off' pics soon!