c++ - Linker Error 2019 without touching the linker properties? -
so i'm making game, , working fine, started developing next part of game chunking system , generation (you might able tell previous posts) of sudden got random linker errors, though haven't touched in linker , game working fine before. here errors:
error 3 error lnk2019: unresolved external symbol "public: class sf::sprite __thiscall abstractblock::draw(void)" (?draw@abstractblock@@qae?avsprite@sf@@xz) referenced in function _main c:\(insert personal stuff here)\main.obj top down shooter error 4 error lnk2019: unresolved external symbol "public: void __thiscall abstractblock::destroy(class b2world *)" (?destroy@abstractblock@@qaexpavb2world@@@z) referenced in function "public: int __thiscall universe::savegame(void)" (?savegame@universe@@qaehxz) c:\(insert personal stuff here)\universe.obj top down shooter error 5 error lnk1120: 2 unresolved externals they don't have line numbers , appears problem in universe.obj , main.obj? don't know are, instead i'm going post both of .cpp files in full:
universe.cpp:
#include "universe.h" universe::universe(){ world = new b2world(b2vec2(0, 0)); world->setallowsleeping(false); chunkmanager = new chunkmanager(world); player = new player(world); } universe::~universe() { } int universe::savegame(){ player->destroy(world); player = nullptr; std::list<abstractblock>::iterator i; (i = getloadedblocks()->begin(); != getloadedblocks()->end(); i++){ i->destroy(world); } world = nullptr; return 1; } void universe::spawnentity(int x, int y, int entityid){ } std::list<abstractblock>* universe::getloadedblocks(){ return chunkmanager->getloadedblocks(); } void universe::update(){ player->update(); world->step(1 / 60.f, 8, 3); } player* universe::getplayer(){ return player; } main.cpp:
#include <iostream> #include "box2d\box2d.h" #include "sfml/graphics.hpp" #include "universe.h" #include "simplexnoise.h" int main(){ static int fps = 1.f / 60.f; sf::renderwindow window(sf::videomode(640, 480), "top down shooter"); sf::event event; universe universe; bool running = true; int distx; int disty; float angle; while (running){ window.clear(sf::color::white); while (window.pollevent(event)){ switch (event.type){ case sf::event::closed: running = false; break; case sf::event::keypressed: switch (event.key.code){ case sf::keyboard::q: running = false; break; case sf::keyboard::w: universe.getplayer()->setmoveup(true); break; case sf::keyboard::a: universe.getplayer()->setmoveleft(true); break; case sf::keyboard::d: universe.getplayer()->setmoveright(true); break; case sf::keyboard::s: universe.getplayer()->setmovedown(true); break; } break; case sf::event::keyreleased: switch (event.key.code){ case sf::keyboard::w: universe.getplayer()->setmoveup(false); break; case sf::keyboard::a: universe.getplayer()->setmoveleft(false); break; case sf::keyboard::d: universe.getplayer()->setmoveright(false); break; case sf::keyboard::s: universe.getplayer()->setmovedown(false); break; } break; } } distx = (sf::mouse::getposition().x - universe.getplayer()->getxpos() - window.getposition().x - 10); disty = (sf::mouse::getposition().y - universe.getplayer()->getypos() - window.getposition().y - 30); if (distx != 0){ angle = std::atan2f(disty, distx); universe.getplayer()->setangle(angle + (b2_pi / 2)); } //updating universe universe.update(); //drawing window.draw(universe.getplayer()->draw()); std::list<abstractblock>::iterator i; (i = universe.getloadedblocks()->begin(); != universe.getloadedblocks()->end(); i++){ window.draw(i->draw()); } window.display(); } universe.savegame(); return 0; } so trying figure out problem on own, , thought may have been part use iterator , lists draw current blocks in universe. thought because both universe , main .cpp have these small loops in them (which added). commented out parts in each file , things got weirder. visual studio 2013 gave me errors when ran program , take me xutility file! have no idea why! made sure comment out iterator part , tried again same thing happened! 2 lines of iterators commented out i'm not using iterators @ in program! why taking me there? please i'm confused >.<
edit: abstractblock.cpp:
#include "abstractblock.h" abstractblock::abstractblock() { } abstractblock::abstractblock(int x, int y, float roation, b2world *world){ } sf::sprite abstractblock::draw(){ sf::sprite sprite; return sprite; } void abstractblock::destroy(b2world *world){ } abstractblock::~abstractblock() { } i'm java programmer, , wasn't sure if there way make "abstract" class can in java, instead made normal class not many defined methods, inherited other classes.
second edit: have decided show dirt class extends abstracblock class , far class inherits abstractblock:
#include "dirtblock.h" dirtblock::dirtblock() { } dirtblock::dirtblock(int x, int y, float rotation, b2world *world){ bodydef.position.set(x, y); bodydef.type = b2_dynamicbody; fixdef.density = .1f; b2polygonshape shape; shape.setasbox(16, 16); fixdef.shape = &shape; body = world->createbody(&bodydef); body->createfixture(&fixdef); texture.loadfromfile("dirt.png"); } void dirtblock::destroy(b2world *world){ world->destroybody(body); body = nullptr; } dirtblock::~dirtblock() { } sf::sprite dirtblock::draw(){ sf::sprite sprite; sprite.settexture(texture); sprite.setorigin(16, 16); sprite.setposition(body->getposition().x, body->getposition().y); return sprite; } third edit: also! visualstudio takes me when try run program:
#if _iterator_debug_level == 2 if (_myproxy != _parent_proxy) { // change parentage _lockit _lock(_lock_debug); _orphan_me(); _mynextiter = _parent_proxy->_myfirstiter; _parent_proxy->_myfirstiter = this; _myproxy = _parent_proxy; } it's located in xutility class , have no idea is.the next line performed _mynextiter line.
well, immediate guess forgot add abstractblock.cpp project.
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