Line collisions and dragging added

Co-authored-by: sigonasr2 <sigonasr2@gmail.com>

main.cpp

@@ -31,6 +31,7 @@ public:
 	Line*selectedLine;
 	std::vector<std::pair<Ball*,Ball*>>collidingPairs;
 	std::vector<Ball*>fakeBalls;
+	bool selectedLineStart=false;
 
 	MiniGolfPro()
 	{
@@ -78,7 +79,7 @@ public:
 			return fabs((pos.x - point.x)*(pos.x - point.x) + (pos.y - point.y)*(pos.y - point.y)) < (r * r);
 		};
 
-		if (GetMouse(0).bPressed||GetMouse(1).bPressed){
+		if (GetMouse(0).bPressed){
 			selectedBall = nullptr;
 			for (Ball&b:balls){
 				if (IsPointInCircle(b.pos,b.radius,GetMousePos()))
@@ -87,23 +88,43 @@ public:
 					break;
 				}
 			}
+			selectedLine=nullptr;
+			for(Line&l:lines){
+				if(IsPointInCircle(l.startPos,l.radius,GetMousePos())){
+					selectedLine=&l;
+					selectedLineStart=true;
+					break;
+				}
+				if(IsPointInCircle(l.endPos,l.radius,GetMousePos())){
+					selectedLine=&l;
+					selectedLineStart=false;
+					break;
+				}
+			}
 		}
 
 		if(GetMouse(0).bHeld){
-			if(selectedBall!=nullptr){
-				selectedBall->pos.x=GetMouseX();
-				selectedBall->pos.y=GetMouseY();
+			if(selectedLine!=nullptr){
+				if(selectedLineStart){
+					selectedLine->startPos=GetMousePos();
+				}else{
+					selectedLine->endPos=GetMousePos();
 				}
 			}
-		if(GetMouse(0).bReleased){
-			selectedBall=nullptr;
 		}
-		if(GetMouse(1).bReleased){
+		if(GetMouse(0).bReleased){
 			if(selectedBall!=nullptr){
-				selectedBall->vel.x=5*(selectedBall->pos.x-(float)GetMouseX());
-				selectedBall->vel.y=5*(selectedBall->pos.y-(float)GetMouseY());
+				selectedBall->vel.x=5*((selectedBall->pos.x)-GetMouseX());
+				selectedBall->vel.y=5*((selectedBall->pos.y)-GetMouseY());
 			}
 			selectedBall=nullptr;
+			selectedLine=nullptr;
+		}
+		if(GetMouse(1).bHeld){
+			for(Ball&b:balls){
+				b.vel.x+=(GetMouseX()-b.pos.x)*0.01f;
+				b.vel.y+=(GetMouseY()-b.pos.y)*0.01f;
+			}
 		}
 
 		Clear(BLACK);
@@ -156,7 +177,7 @@ public:
 						vf2d line2={b.pos.x-l.startPos.x,b.pos.y-l.startPos.y};
 						float edgeLength=line1.x*line1.x+line1.y*line1.y;
 						float t=std::max(0.f,std::min(edgeLength,(line1.x*line2.x+line1.y*line2.y)))/edgeLength;
-						vf2d closestPoint={l.startPos.x+t*line1.x,l.startPos.y+t*line1.x};
+						vf2d closestPoint={l.startPos.x+t*line1.x,l.startPos.y+t*line1.y};
 						float dist=sqrtf((b.pos.x-closestPoint.x)*(b.pos.x-closestPoint.x)+(b.pos.y-closestPoint.y)*(b.pos.y-closestPoint.y));
 						if(dist<=b.radius+l.radius){
 							Ball*fakeBall=new Ball();
@@ -199,7 +220,7 @@ public:
 					vf2d tangent={-normal.y,normal.x};
 					vf2d dpTangent={tangent.dot(b1->vel),tangent.dot(b2->vel)};
 					vf2d dpNormal={normal.dot(b1->vel),normal.dot(b2->vel)};
-					vf2d momentum={(dpNormal.x*(b1->mass-b2->mass)+2.f*b2->mass*dpNormal.y)/(b1->mass+b2->mass),(dpNormal.y*(b2->mass-b1->mass)+2.f*b1->mass*dpNormal.x)/(b1->mass+b2->mass)};
+					vf2d momentum={efficiency*(dpNormal.x*(b1->mass-b2->mass)+2.f*b2->mass*dpNormal.y)/(b1->mass+b2->mass),efficiency*(dpNormal.y*(b2->mass-b1->mass)+2.f*b1->mass*dpNormal.x)/(b1->mass+b2->mass)};
 					b1->vel.x=tangent.x*dpTangent.x+normal.x*momentum.x;
 					b1->vel.y=tangent.y*dpTangent.x+normal.y*momentum.x;
 					b2->vel.x=tangent.x*dpTangent.y+normal.x*momentum.y;