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int HexagonBoard::getHexDistance(const sf::Vector2i& Tile1, const sf::Vector2i& Tile2) const {
	int retVal;
	//Relativkoordinaten zum Punkt 0, 0
	sf::Vector2i relToZeroInHexa(Tile1.x-Tile2.x, Tile1.y-Tile2.y);
 
	//Differnz bilden
	sf::Vector2i diffInHexa(relToZeroInHexa.x, relToZeroInHexa.y);
 
	//Umrechnung auf Mittelpunktskoordinaten/Dreieckskoordinaten
	//Dabei gerade und ungerade Reihen beachten
	if(Tile1.y % 2) {
		diffInHexa.x=-2*diffInHexa.x;
	} else {
		diffInHexa.x=2*diffInHexa.x;
	}
 
	//Zusätzliche Verschiebung berücksichtigen, weil y-Achse im Zick-Zack läuft
	if(abs(relToZeroInHexa.y) % 2) {
		diffInHexa.x -=1;
	}
 
	//Relativkoordinaten zum Punkt 0, 0
	sf::Vector2i relToZeroInTriangles(diffInHexa.x, relToZeroInHexa.y);
 
	int m=( (relToZeroInTriangles.x <= 0 ? -1 : 1)*relToZeroInTriangles.x) - abs(diffInHexa.y);
	return (m < 0 ? abs(diffInHexa.y) : m/2.f + abs(diffInHexa.y) );
}

prog.cpp:1: error: ‘HexagonBoard’ has not been declared
prog.cpp:1: error: expected ‘,’ or ‘...’ before ‘::’ token
prog.cpp:1: error: ISO C++ forbids declaration of ‘sf’ with no type
prog.cpp:1: error: non-member function ‘int getHexDistance(int)’ cannot have cv-qualifier
prog.cpp: In function ‘int getHexDistance(int)’:
prog.cpp:4: error: ‘sf’ is not a class or namespace
prog.cpp:4: error: expected `;' before ‘relToZeroInHexa’
prog.cpp:7: error: ‘sf’ is not a class or namespace
prog.cpp:7: error: expected `;' before ‘diffInHexa’
prog.cpp:11: error: ‘Tile1’ was not declared in this scope
prog.cpp:12: error: ‘diffInHexa’ was not declared in this scope
prog.cpp:14: error: ‘diffInHexa’ was not declared in this scope
prog.cpp:18: error: ‘relToZeroInHexa’ was not declared in this scope
prog.cpp:18: error: ‘abs’ was not declared in this scope
prog.cpp:19: error: ‘diffInHexa’ was not declared in this scope
prog.cpp:23: error: ‘sf’ is not a class or namespace
prog.cpp:23: error: expected `;' before ‘relToZeroInTriangles’
prog.cpp:25: error: ‘relToZeroInTriangles’ was not declared in this scope
prog.cpp:25: error: ‘diffInHexa’ was not declared in this scope
prog.cpp:25: error: ‘abs’ was not declared in this scope
prog.cpp:2: warning: unused variable ‘retVal’

Standard output is empty