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authoraap <aap@papnet.eu>2021-01-02 20:15:01 +0100
committeraap <aap@papnet.eu>2021-01-02 20:15:01 +0100
commit78fed0dfe73fa3abf2e9feebfda35256fe38d930 (patch)
tree7a497cc59b1ce7b5046fc04b5196f44fbb2b40be /src/vehicles/HandlingMgr.cpp
parentfix fix (diff)
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Diffstat (limited to 'src/vehicles/HandlingMgr.cpp')
-rw-r--r--src/vehicles/HandlingMgr.cpp12
1 files changed, 9 insertions, 3 deletions
diff --git a/src/vehicles/HandlingMgr.cpp b/src/vehicles/HandlingMgr.cpp
index be8150fb..7b60acf2 100644
--- a/src/vehicles/HandlingMgr.cpp
+++ b/src/vehicles/HandlingMgr.cpp
@@ -202,15 +202,21 @@ cHandlingDataMgr::ConvertDataToGameUnits(tHandlingData *handling)
handling->fInvMass = 1.0f/handling->fMass;
handling->fBuoyancy = 100.0f/handling->nPercentSubmerged * GRAVITY*handling->fMass;
- // What the hell is going on here?
- specificVolume = handling->Dimension.x*handling->Dimension.z*0.5f / handling->fMass; // ?
+ // Don't quite understand this. What seems to be going on is that
+ // we calculate a drag (air resistance) deceleration for a given velocity and
+ // find the intersection between that and the max engine acceleration.
+ // at that point the car cannot accelerate any further and we've found the max velocity.
a = 0.0f;
b = 100.0f;
velocity = handling->Transmission.fMaxVelocity;
while(a < b && velocity > 0.0f){
velocity -= 0.01f;
+ // what's the 1/6?
a = handling->Transmission.fEngineAcceleration/6.0f;
- b = -velocity * (1.0f/(specificVolume * sq(velocity) + 1.0f) - 1.0f);
+ // no density or drag coefficient here...
+ float a_drag = 0.5f*SQR(velocity) * handling->Dimension.x*handling->Dimension.z / handling->fMass;
+ // can't make sense of this... maybe v - v/(drag + 1) ? but that doesn't make so much sense either
+ b = -velocity * (1.0f/(a_drag + 1.0f) - 1.0f);
}
if(handling->nIdentifier == HANDLING_RCBANDIT){