Kayne Ruse
45 lines
1.5 KiB
C++
45 lines
1.5 KiB
C++
/* Copyright: (c) Kayne Ruse 2013
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*
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* This software is provided 'as-is', without any express or implied
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* warranty. In no event will the authors be held liable for any damages
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* arising from the use of this software.
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*
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* Permission is granted to anyone to use this software for any purpose,
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* including commercial applications, and to alter it and redistribute it
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* freely, subject to the following restrictions:
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*
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* 1. The origin of this software must not be misrepresented; you must not
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* claim that you wrote the original software. If you use this software
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* in a product, an acknowledgment in the product documentation would be
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* appreciated but is not required.
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*
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* 2. Altered source versions must be plainly marked as such, and must not be
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* misrepresented as being the original software.
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*
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* 3. This notice may not be removed or altered from any source
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* distribution.
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*/
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#include "tile.hpp"
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bool operator<(Tile const& lhs, Tile const& rhs) {
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//sort by depth -> y -> x
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if (lhs.depth == rhs.depth) {
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if (lhs.y == rhs.y) {
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return lhs.x < rhs.x;
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}
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return lhs.y < rhs.y;
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}
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return lhs.depth < rhs.depth;
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}
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inline bool operator>(Tile const& lhs, Tile const& rhs) {
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//wrap the other operator
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return rhs < lhs;
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}
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inline bool operator==(Tile const& lhs, Tile const& rhs) {
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//comparisons work on the location ONLY
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//this function is redundant as far as the std::set object is concerned
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return (lhs.x == rhs.x) && (lhs.y == rhs.y) && (lhs.depth == rhs.depth);
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}
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