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Managed C++/CLI

 
QuestionSharpen filter of bmp image Pin
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Questionplease explain this lines of code Pin
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AnswerRe: please explain this lines of code Pin
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NewsC++/CLI support comes to ReSharper C++ Pin
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QuestionTo find the angle of turn in a car racing game in C++/SFML Pin
Tarun Jha21-Jul-18 23:39
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AnswerRe: To find the angle of turn in a car racing game in C++/SFML Pin
John Schroedl23-Jul-18 6:41
professionalJohn Schroedl23-Jul-18 6:41 
Consider the two chunks of code separately.

The first two lines are updating angle by a fraction of turnSpeed. If speed were == maxSpeed then speed/maxSpeed = 1. So angle += turnSpeed for a right-turn. turnSpeed = 0.08 so that's in Radians which is 4.58 degrees. This means if you're turning right or left at max speed, it'll add or remove 4.58 degrees each time through. If speed is less than the max, then the angle will change by a smaller amount (a fraction of .08 radians). Try it in the debugger and see the change.

The last two lines are updating the x,y location of the car using it's orientation (angle). cos(angle) is typically the x portion of an angle so I'm not sure why it modifies the y coor with that but that's what it does. sin(angle) or cos(angle) produces a value from 0-1 (which it uses as a percentage) * speed. That means x or y changes by a fraction of speed in the direction of angle.

It would probably help you to print out the values or use the debugger.

Hope this helps,
John
GeneralRe: To find the angle of turn in a car racing game in C++/SFML Pin
Tarun Jha25-Jul-18 7:36
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QuestionSmall RAII-like cleanup class in C++/CLI Pin
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QuestionInformation Edit Source code for c++ Pin
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QuestionError On a Project I'm Working On. (Sorry If Not descriptive enough, 1st time) Pin
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QuestionPrint causes in afxtls.cpp Pin
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QuestionWhat is the alternative of _kbhit_ in linux ? Pin
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QuestionMore Than One Operator "+" Matches These Operands Pin
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QuestionHow to access the ref class declared DataTable ? Pin
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