c++ - Vector Subscript out of Range During Projectile Creation -
there 2 microsoft visual c++ runtime library messages pop when attempt create projectiles while game running
debug assertion failed! program: c:\windows\system32\msvcp120d.dll file: c:\program files (x86)\microsoft visual studio 12.0\vc\include\vector line:1201 expression: vector subscript out of range and
debug assertion failed! program: c:\sfml-2.3.2\sfml\debug\sfml.exe file: c:\program files (x86)\microsoft visual studio 12.0\vc\include\vector line:1202 expression: "standard c++ libraries out of range" && 0 and message microsoft visual studio express 2013:
unhandled exception @ 0x5b89a893 (msvcr120d.dll) in sfml.exe: invalid parameter passed function considers invalid parameters fatal.
this occurs press space bar create projectile (green square). green square appears on screen should , message pops up. projectile @ point current code should behave green square paint brush, message pops up. here source code:
main:
int main ( ) { int counter1 = 0; int counter2 = 0; int counter3 = 0; //create main window sf::renderwindow window(sf::videomode(640, 480), "sfml demo"); sf::event event; sf::vector2i source(1, 0); //load texture sf::texture textureplayer; if (!textureplayer.loadfromfile("images/player.png")) return exit_failure; //class object class player player1; player1.sprite.settexture(textureplayer); //projectile vector array vector<projectile>::const_iterator iter; vector<projectile> projectilearray; //projectile object class projectile projectile1; while ( window.isopen() ) { while (window.pollevent(event)) { if ( event.type == sf::event::eventtype::closed ) window.close(); } window.clear(); //fire missile (space bar) if (sf::keyboard::iskeypressed(sf::keyboard::space)) { projectile1.rect.setposition(player1.rect.getposition()); projectilearray.push_back(projectile1); } //draw projectile (iter = projectilearray.begin(); iter != projectilearray.end(); iter++) { window.draw(projectilearray[counter1].rect); counter1++; } //update player rectangle collision detection player1.update(); player1.updatemovement(); //window.draw(player1.rect); window.draw(player1.sprite); window.display(); } } projectile.h
class projectile: public entity //inheriting entity { public:
float movementspeed = 10; int attackdamage = 5; projectile(); //constructor //void update(); //void updatemovement(); }; #endif
projectile.cpp
projectile::projectile() { rect.setsize(sf::vector2f(10.0, 10.0)); rect.setfillcolor(sf::color::green); rect.setposition(0, 0); //sprite.settexturerect(sf::intrect(0, 0, 32, 32)); } how fix this? advice/help appreciated. in advance
in cycle draw projectile must use or iterator access elements in projectilearray this
for (iter = projectilearray.begin(); iter != projectilearray.end(); iter++) { window.draw(iter->rect); } or initialize counter1=0; before cycle otherwise in second iteration of main while counter1 not point on begin of vector projectilearray.
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