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(Must be corrected based on game's features.)
Since I don't have any time for coding, I've decided to contribute my little formula for calculating the exact hit time. Also, as a side note: my hard disk broke and I lost all my files and stuff, so I just try to remember the formula. Correct me if you can find any errors.
I won't give the solved solution, because I don't want that every idiot on the Internet goes and ruins all those games. This is for those who are interested in maths and physics.
An object's future position is 1/2*a*tē + b*t + c. (a - acceleration, b - velocity, c - position)
The distance from a projectile to a target is | 1/2*(a1 - a0)*tē + (b1 - b0)*t + c1 - c0 |.
Where one is the target and zero is the projectile (based on a game you might need to add the properties of a player to the properties of a projectile (acc, vel, pos).
So, that's the distance the projectile should travel. Now, if the speed of the projectile (not the velocity, we don't know the direction) is p, then the projectile travels a distance of p*t in time t.
Thus, the formula is:
| 1/2*(a1 - a0)*tē + (b1 - b0)*t + c1 - c0 | = p*t
Where
Vectors:
a = acceleration
b = velocity of a target(1) and own velocity(0)
c = position
1 = target
0 = our player's property (+ projectiles property if needed (acc, vel, pos)
Scalars:
p = speed of a projectile
t = time
To solve the time from a solved equation I've used Ferrari's method to solve the 4th degree equation.
Some games do not add your player's acceleration to the bullet's and so on. This is what is meant with correcting the formula (or the variables).
There might be some error, since I'm giving this out of my head. I can still remember that this has worked for me everytime I've tried..
Code:
void cAimbot::PredictTarget(C_BaseEntity* pBaseEntity, Vector &vEyePos, C_BaseEntity *pMe)
{
Vector vOld[65];
Vector vOldMe;
Vector vAccel[65];
Vector vMyAccel;
Vector vecEnemyVelocity = *(Vector*)((DWORD)pBaseEntity + 0xF0);
Vector vMyVel = *(Vector*)((DWORD)pMe + 0xF0);
Vector vDelta = vecEnemyVelocity - vOld[pBaseEntity->index];
vOld[pBaseEntity->index] = vecEnemyVelocity;
if(vDelta != Vector(0,0,0))
vAccel[pBaseEntity->index] = vDelta;
Vector vDeltaMe = vMyVel - vOldMe;
vOldMe = vMyVel;
if(vDeltaMe != Vector(0,0,0))
vMyAccel = vDeltaMe;
if(vAccel[pBaseEntity->index] != Vector(0,0,0) || vMyAccel != Vector(0,0,0))
m_vecPosition += ( 1 / 2 * (vAccel[pBaseEntity->index] - vMyAccel) * Square(g_pGlobals->interval_per_tick) + (vecEnemyVelocity - vMyVel) * g_pGlobals->interval_per_tick + m_vecPosition - vEyePos);
} |
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