Kayne Ruse
76 lines
2.0 KiB
C++
76 lines
2.0 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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#include <iostream>
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bool LocalCharacter::ProcessCollisionGrid(std::list<BoundingBox> boxList, Uint8* keyState) {
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//skip this if there's no movement
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if (motion == 0) {
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return false;
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}
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//determine the simple movement based on input
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Vector2 newMotion = {0, 0};
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if (keyState[SDLK_w]) {
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newMotion.y -= CHARACTER_WALKING_SPEED;
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}
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if (keyState[SDLK_a]) {
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newMotion.x -= CHARACTER_WALKING_SPEED;
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}
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if (keyState[SDLK_s]) {
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newMotion.y += CHARACTER_WALKING_SPEED;
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}
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if (keyState[SDLK_d]) {
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newMotion.x += CHARACTER_WALKING_SPEED;
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}
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bool ret = false;
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for(auto& box : boxList) {
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if (box.CheckCollision(origin + bounds)) {
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//push the character to the closest non-contact position
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Vector2 shift = box.CalcShift(origin + bounds);
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origin += shift;
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//set any motion in that direction to zero
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if (shift.x != 0) {
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newMotion.x = 0;
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}
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if (shift.y != 0) {
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newMotion.y = 0;
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}
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ret = true;
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}
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}
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//handle diagonals
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if (newMotion.x != 0 && newMotion.y != 0) {
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newMotion *= CHARACTER_WALKING_MOD;
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}
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//set the new motion
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motion = newMotion;
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//signal for updates
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return ret;
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} |