Kayne Ruse
143 lines
3.8 KiB
C++
143 lines
3.8 KiB
C++
/* Copyright: (c) Kayne Ruse 2014
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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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#ifndef REGIONPAGER_HPP_
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#define REGIONPAGER_HPP_
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#include "region.hpp"
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#include "utility.hpp"
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#include <list>
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class RegionPagerBase {
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public:
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RegionPagerBase() = default;
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RegionPagerBase(int regionWidth, int regionHeight, int regionDepth);
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virtual ~RegionPagerBase();
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Region::type_t SetTile(int x, int y, int z, Region::type_t v);
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Region::type_t GetTile(int x, int y, int z);
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Region* GetRegion(int x, int y);
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//interface
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virtual Region* LoadRegion(int x, int y) = 0;
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virtual Region* SaveRegion(int x, int y) = 0;
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virtual Region* CreateRegion(int x, int y) = 0;
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virtual void UnloadRegion(int x, int y) = 0;
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//accessors
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//NOTE: don't change the sizes mid-program, it will cause issues
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int SetRegionWidth(int i) { return regionWidth = i; }
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int SetRegionHeight(int i) { return regionHeight = i; }
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int SetRegionDepth(int i) { return regionDepth = i; }
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int GetRegionWidth() const { return regionWidth; }
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int GetRegionHeight() const { return regionHeight; }
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int GetRegionDepth() const { return regionDepth; }
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protected:
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int regionWidth;
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int regionHeight;
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int regionDepth;
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std::list<Region*> regionList;
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};
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template<typename MapGenerator, typename MapFileFormat>
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class RegionPager : public RegionPagerBase {
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public:
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RegionPager() = default;
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RegionPager(int w, int h, int d):
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RegionPagerBase(w, h, d)
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{
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//EMPTY
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}
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~RegionPager() = default;
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Region* LoadRegion(int x, int y) {
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//snap the coords
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x = snapToBase(regionWidth, x);
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y = snapToBase(regionHeight, y);
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//load the region if possible
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Region* ptr = nullptr;
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format.Load(&ptr, x, y);
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if (ptr) {
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regionList.push_back(ptr);
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return ptr;
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}
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return nullptr;
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}
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Region* SaveRegion(int x, int y) {
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//snap the coords
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x = snapToBase(regionWidth, x);
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y = snapToBase(regionHeight, y);
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//find & save the region
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for (std::list<Region*>::iterator it = regionList.begin(); it != regionList.end(); it++) {
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if ((*it)->GetX() == x && (*it)->GetY() == y) {
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format.Save(*it);
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return *it;
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}
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}
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return nullptr;
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}
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Region* CreateRegion(int x, int y) {
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//snap the coords
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x = snapToBase(regionWidth, x);
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y = snapToBase(regionHeight, y);
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//create and push the object
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Region* ptr = nullptr;
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generator.Create(&ptr, regionWidth, regionHeight, regionDepth, x, y);
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regionList.push_back(ptr);
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return ptr;
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}
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void UnloadRegion(int x, int y) {
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//snap the coords
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x = snapToBase(regionWidth, x);
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y = snapToBase(regionHeight, y);
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for (std::list<Region*>::iterator it = regionList.begin(); it != regionList.end(); /* EMPTY */) {
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if ((*it)->GetX() == x && (*it)->GetY() == y) {
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generator.Unload(*it);
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regionList.erase(it);
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//reset the loop, because of reasons
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it = regionList.begin();
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continue;
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}
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++it;
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}
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}
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//accessors
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MapGenerator* GetGenerator() { return &generator; }
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MapFileFormat* GetFormat() { return &format; }
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protected:
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MapGenerator generator;
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MapFileFormat format;
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};
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#endif
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