Kayne Ruse
71 lines
1.6 KiB
C++
71 lines
1.6 KiB
C++
#include "tile_sheet.hpp"
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#include <algorithm>
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#include <stdexcept>
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static inline std::string truncatePath(std::string pathname) {
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//TODO: move this into a utilities module?
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return std::string(
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std::find_if(
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pathname.rbegin(),
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pathname.rend(),
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[](char ch) -> bool {
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//windows only
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return ch == '/' || ch == '\\';
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// //unix only
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// return ch == '/';
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}).base(),
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pathname.end());
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}
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SDL_Surface* TileSheet::LoadSurface(std::string fname, Uint16 w, Uint16 h) {
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//setup the image
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image.LoadSurface(fname);
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image.SetClipW(w);
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image.SetClipH(h);
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//get the tile counts
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xCount = image.GetSurface()->w / w;
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yCount = image.GetSurface()->h / h;
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totalCount = xCount * yCount;
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//cache the name
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name = truncatePath(fname);
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}
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SDL_Surface* TileSheet::SetSurface(SDL_Surface* const ptr, Uint16 w, Uint16 h) {
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//setup the image
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image.SetSurface(ptr);
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image.SetClipW(w);
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image.SetClipH(h);
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//get the tile counts
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xCount = image.GetSurface()->w / w;
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yCount = image.GetSurface()->h / h;
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totalCount = xCount * yCount;
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}
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SDL_Surface* TileSheet::GetSurface() {
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return image.GetSurface();
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}
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void TileSheet::FreeSurface() {
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image.FreeSurface();
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totalCount = xCount = yCount = 0;
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begin = end = -1;
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name.clear();
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}
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void TileSheet::DrawTo(SDL_Surface* const dest, int x, int y, int tileIndex) {
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if (!InRange(tileIndex)) {
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throw(std::runtime_error("Tile index out of range of Tile Sheet"));
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}
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Sint16 clipX = tileIndex % xCount * image.GetClipW();
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Sint16 clipY = tileIndex / xCount * image.GetClipH();
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image.SetClipX(clipX);
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image.SetClipY(clipY);
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image.DrawTo(dest, x, y);
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}
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