Kayne Ruse
80 lines
2.4 KiB
C++
80 lines
2.4 KiB
C++
/* Copyright: (c) Kayne Ruse 2013-2015
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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 "local_character.hpp"
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bool LocalCharacter::ProcessCollisions(std::list<BoundingBox>& boxList) {
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if (CheckCollisionSimple(boxList, origin + motion)) {
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Vector2 velocity;
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velocity.x = CorrectVelocityX(boxList, motion.x);
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velocity.y = CorrectVelocityY(boxList, motion.y);
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origin += velocity;
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return true;
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}
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else {
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origin += motion;
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return false;
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}
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}
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bool LocalCharacter::CheckCollisionSimple(std::list<BoundingBox>& boxList, Vector2 newPos) {
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for (auto& it : boxList) {
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if (it.CheckOverlap(bounds + newPos)) {
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return true;
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}
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}
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return false;
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}
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double LocalCharacter::CorrectVelocityX(std::list<BoundingBox>& boxList, double velocityX) {
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double ret = velocityX;
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for (auto& it : boxList) {
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if (it.CheckOverlap(bounds + origin + Vector2(velocityX, 0) )) {
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if (velocityX > 0) {
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ret = std::min(ret, it.x - (origin.x + bounds.x + bounds.w -1));
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ret = std::min(ret, 0.0);
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}
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else if (velocityX < 0) {
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ret = std::max(ret, (it.x + it.w) - (origin.x + bounds.x));
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ret = std::max(ret, 0.0);
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}
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}
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}
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return ret;
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}
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double LocalCharacter::CorrectVelocityY(std::list<BoundingBox>& boxList, double velocityY) {
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double ret = velocityY;
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for (auto& it : boxList) {
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if (it.CheckOverlap(bounds + origin + Vector2(0, velocityY) )) {
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if (velocityY > 0) {
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ret = std::min(ret, it.y - (origin.y + bounds.y + bounds.h -1));
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ret = std::min(ret, 0.0);
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}
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else if (velocityY < 0) {
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ret = std::max(ret, (it.y + it.h) - (origin.y + bounds.y));
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ret = std::max(ret, 0.0);
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}
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}
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}
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return ret;
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}
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