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physics unhandeled exception

General and Gameplay Programming Programming

Started by Adam West June 28, 2012 07:27 AM

2 comments, last by Ashaman73 11 years, 9 months ago

Adam West

219

Author

June 28, 2012 07:27 AM

hey there,

for my game i am trying to implement a method wich will be called in the game loop to calculate the physics. the time elapsed is required. for some reason which is unknown to me i keep getting and unhandeled exception? what is wrong with the code?



void PhysicsManager::StepPhysics()

{



// Get frame delta time:   NOT WORKING

const u32 time_now = device->getTimer()->getTime();

const f32 frameDeltaTime = (f32)(time_now-time_then)/1000.f; // Time in seconds: /1000.f

time_then = time_now;



// Set the physics simulation going

physxManager->simulate(TimeElapsed);



// Wait for the physics simulation to finish

physxManager->fetchResults();



// Render Physx debug data

physxManager->renderDebugData(video::SColor(225,255,255,255));





}

time_then is defined elsewhere as the time from when the program began

doeme

1,189

June 28, 2012 07:44 AM

Where exactly do you get your unhandled exception at which line? Step through the code with a debugger to find out. In my experience unhandled exceptions are often nullptr-exception. Assuming u32 and f32 are primitive dataypes the calculation itself is *very* unlikely to throw an exception.

On the other hand seems you're not using frameDeltaTime at all, so why calculate it? Should "TimeElapsed" be "frameDeltaTime"?

Adam West

219

Author

June 28, 2012 08:33 AM

ive changed it a bit but ithink the problem is [color=#000000][size=2]

[background=rgb(250, 251, 252)]physxManager[/background]

[color=#666600][size=2]

[background=rgb(250, 251, 252)]->[/background]

[color=#000000][size=2]

[background=rgb(250, 251, 252)]simulate[/background]

[color=#666600][size=2]

[background=rgb(250, 251, 252)]([/background]

[color=#660066][size=2]

[background=rgb(250, 251, 252)]TimeElapsed[/background]

[color=#666600][size=2]

[background=rgb(250, 251, 252)]);[/background]

[color=#666600][size=2]

[background=rgb(250, 251, 252)]here is the updated code[/background]

[color=#666600][size=2]

[background=rgb(250, 251, 252)]float redNovember::FindElapsedTime() { irr::u32 now = device->getTimer()->getTime(); irr::f32 TimeElapsed = (now - then) / 1000.f; // seconds then = now;[/background]

[color=#666600][size=2]

[background=rgb(250, 251, 252)]return now;[/background]

[color=#666600][size=2]

[background=rgb(250, 251, 252)]void PhysicsManager::StepPhysics()
{[/background]

[color=#666600][size=2]

[background=rgb(250, 251, 252)]float TimeElapsed = FindElapsedTime();[/background]

[color=#666600][size=2]

[background=rgb(250, 251, 252)] // Set the physics simulation going
physxManager->simulate(TimeElapsed);

// Wait for the physics simulation to finish
physxManager->fetchResults();

// Render Physx debug data
physxManager->renderDebugData(video::SColor(225,255,255,255));

}

[/background]