Change to rectangle dragging.

TiledCollisionEditor/main.cpp

@@ -16,7 +16,8 @@ class TiledCollisionEditor : public olc::PixelGameEngine
 	Quadrilateral*editingQuad=nullptr;
 	Quadrilateral originalQuad;
 	std::string selectedObj="";
-	int editingPoint=4; //Which point we are editing (0-3.)
+	int editingPoint=4; //0-3 for the index we are editing within editingQuad.
+	bool dragging=false;
 
 	TransformedView view;
 
@@ -98,7 +99,7 @@ public:
 			}
 
 			const TilesetObject&obj=tileset.objects.at(selectedObj);
-			const bool EditingQuad=editingPoint<4&&editingQuad!=nullptr;
+			const bool EditingQuad=(editingPoint<4||dragging)&&editingQuad!=nullptr;
 
 
 			auto GetSnapPoint=[&](){
@@ -109,29 +110,47 @@ public:
 				return vf2d{round(worldCoords.x/(tileset.tilewidth/4))*tileset.tilewidth/4,round(worldCoords.y/(tileset.tileheight/4))*tileset.tileheight/4};
 			};
 
-			if(EditingQuad){
+			if(EditingQuad&&!dragging){
 				(*editingQuad)[editingPoint]=GetSnapPoint();
+			}else
+			if(EditingQuad&&dragging){
+				vf2d cursorPos=GetSnapPoint();
+				vf2d initialPoint=(*editingQuad)[0];
+				(*editingQuad)[1]=vf2d{cursorPos.x,initialPoint.y};
+				(*editingQuad)[2]=GetSnapPoint();
+				(*editingQuad)[3]=vf2d{initialPoint.x,cursorPos.y};
 			}
 
 			if(GetMouse(Mouse::LEFT).bPressed){
-				if(EditingQuad){
+				if(EditingQuad&&!dragging){
 					(*editingQuad)[editingPoint]=GetSnapPoint();
 					editingPoint++;
 				}else{
 					if(obj.collisionTiles.size()==0){
-						Quadrilateral newQuad;
-						newQuad.fill(obj.bounds.middle());
+						Quadrilateral newQuad{GetSnapPoint()};
 						tilesets[activeTileset].objects[selectedObj].collisionTiles.push_back(newQuad);
 					}
-					editingPoint=0;
+					dragging=true;
 					editingQuad=const_cast<Quadrilateral*>(&obj.collisionTiles.back());	
 					originalQuad=*editingQuad;
 				}
 			}
 
+			if(GetMouse(Mouse::LEFT).bReleased){
+				if(EditingQuad&&dragging){
+					vf2d cursorPos=GetSnapPoint();
+					vf2d initialPoint=(*editingQuad)[0];
+					(*editingQuad)[1]=vf2d{cursorPos.x,initialPoint.y};
+					(*editingQuad)[2]=GetSnapPoint();
+					(*editingQuad)[3]=vf2d{initialPoint.x,cursorPos.y};
+					dragging=false;
+				}
+			}
+
 			if(GetMouse(Mouse::RIGHT).bPressed||GetKey(ESCAPE).bPressed){
 				if(EditingQuad){
 					editingPoint=4;
+					dragging=false;
 					*editingQuad=originalQuad;
 					editingQuad=nullptr;
 				}