Kayne Ruse
119 lines
3.1 KiB
C++
119 lines
3.1 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 "region_pager.hpp"
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#include <stdexcept>
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RegionPager::RegionPager() {
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//
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}
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RegionPager::~RegionPager() {
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if (onDelete) {
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for (auto& i : regionList) {
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onDelete(&i);
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}
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}
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}
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Region* RegionPager::NewRegion(int x, int y) {
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for (auto& i : regionList) {
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if (i.GetX() == x && i.GetY() == y) {
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throw(std::runtime_error("Duplicate Regions detected"));
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}
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}
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regionList.push_front({x, y, regionWidth, regionHeight});
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if (onNew) {
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onNew(®ionList.front());
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}
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return ®ionList.front();
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}
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Region* RegionPager::GetRegion(int x, int y) {
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for (auto& i : regionList) {
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if (i.GetX() == x && i.GetY() == y) {
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return &i;
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}
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}
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//create, insert and return
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regionList.push_front({x, y, regionWidth, regionHeight});
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if (onNew) {
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onNew(®ionList.front());
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}
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return ®ionList.front();
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}
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void RegionPager::DeleteRegion(int x, int y) {
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for (std::list<Region>::iterator i = regionList.begin(); i != regionList.end(); i++) {
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if (i->GetX() == x && i->GetY() == y) {
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if (onDelete) {
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onDelete(&(*i));
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}
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regionList.erase(i);
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break;
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}
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}
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}
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void RegionPager::DrawTo(SDL_Surface* const dest, std::list<TileSheet>* const sheetList, int camX, int camY) {
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/* for each region:
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* for each tile within that reagon
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* if you have the correct tile sheet
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* draw to the screen
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* else
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* error
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*/
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for (auto& regionIter : regionList) {
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//draw the region's location
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SDL_Rect box = {
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Sint16(regionIter.GetX() + camX),
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Sint16(regionIter.GetY() + camY),
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Uint16(regionIter.GetWidth()),
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Uint16(regionIter.GetHeight())
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};
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SDL_FillRect(dest, &box, SDL_MapRGB(dest->format, 10, 10, 20));
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//draw each tile
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for (auto& tileIter : *regionIter.GetTiles()) {
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for (auto& sheetIter : *sheetList) {
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if (sheetIter.InRange(tileIter.tileIndex)) {
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sheetIter.DrawTo(
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dest,
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tileIter.x + regionIter.GetX() + camX,
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tileIter.y + regionIter.GetY() + camY,
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tileIter.tileIndex
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);
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//skip to the next tile
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goto continueTile;
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}
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}
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//reaching this point without rendering means that the tile is invalid
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throw(std::runtime_error("Undrawable tile encountered"));
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continueTile: ;
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//continue with the next tile
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}
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}
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} |