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POissues with Storing to array
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  1. POissues with Storing to array
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    copied!<p>I was testing one of my classes, but for some reason I can't seem to cast an intiger from a 2d array to double. Here is my (very simplified) code: In main.cpp</p> <pre><code> #include&lt;iostream&gt; #include&lt;conio.h&gt; #include&lt;string&gt; #include "trajectories.h" int main() { std::string response; int numOfCoords; int speed; int ** coords; std::cout&lt;&lt;"enter the number of coordinates: "; std::cin&gt;&gt;numOfCoords; std::cout&lt;&lt;"enter speed: "; std::cin&gt;&gt;speed; coords=new int *[numOfCoords]; for (int i=0; i&lt;numOfCoords; i++) coords[i] = new int[2]; for(int i=0; i&lt;numOfCoords*2; i++) { if(i%2==0) std::cout&lt;&lt;"enter point "&lt;&lt;i/2&lt;&lt;".x : "; else std::cout&lt;&lt;"enter point "&lt;&lt;i/2&lt;&lt;".y : "; std::cin&gt;&gt;coords[i/2][i%2]; } NPCTrajectory traj(numOfCoords, speed); traj.AddCoordinates(coords); std::cout&lt;&lt;coords[0][0]&lt;&lt;", "&lt;&lt;coords[0][1]&lt;&lt;std::endl; getch(); double currentCoords[2]; currentCoords[0]=double(coords[0][0]); currentCoords[1]=double(coords[0][1]); for(;;) { traj.HandleEvents(currentCoords); std::cout&lt;&lt;"current coordinates : ("&lt;&lt;currentCoords[0]&lt;&lt;", "&lt;&lt;currentCoords[1]&lt;&lt;")"&lt;&lt;std::endl; std::cout&lt;&lt;"do you wish to continue? "; getch(); } } </code></pre> <p>Trajectories.h contains class declaration only, so I believe it is irrelevant. Here is my trajectories.cpp</p> <pre><code> #include "trajectories.h" int FPSCap=5; NPCTrajectory::NPCTrajectory(int npoints, int newSpeed) { numOfPoints=npoints; this-&gt;speed=newSpeed; points = new int * [npoints]; for (int i=0; i&lt;npoints; i++) points[npoints] = new int[2]; state = 0; maxOffset=speed/FPSCap; } void NPCTrajectory::AddCoordinates(int ** coordinates) { for(int i=0;i&lt;this-&gt;numOfPoints; i++) { points[i][0]=coordinates[i][0]; points[i][1]=coordinates[i][1]; } } void NPCTrajectory::HandleEvents(double (&amp;currentCoordinates)[2]) { if(state+1==numOfPoints) return; if(Distance(currentCoordinates[0], currentCoordinates[1], (double)points[state+1][0], (double)points[state+1][1])&lt;maxOffset) state++; double ratio = maxOffset/Distance(currentCoordinates[0], currentCoordinates[1], (double)points[state+1][0], (double)points[state+1][1]); currentCoordinates[0]+=(points[state+1][0]-currentCoordinates[0])*ratio; currentCoordinates[1]+=(points[state+1][1]-currentCoordinates[1])*ratio; } </code></pre> <p>Please note that removing command traj.AddCoordinates(coords) will make the problem disappear. Am I passing the array correctly to the function? </p>
 

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