1 files changed, 76 insertions, 3 deletions

@@ -1,7 +1,80 @@
 #include "sprite.h"
 #include <SDL_image.h>
+#include <fstream>
+#include <list>
+#include <regex>
+#include "util.h"
 
-Sprite::Sprite(std::string_view filename, Renderer& renderer, int width, int height) {
-  textureId_ = renderer.loadImageFromFile(filename);
-  size_ = { width*4, height*4 };
+Sprite::Sprite(std::string_view filename, Renderer& renderer) {
+  std::ifstream datafile(filename.data());
+  if (!datafile.is_open()) {
+    throw std::invalid_argument(std::string("Could not find sprite datafile: ") + std::string(filename));
+  }
+
+  char ch;
+
+  std::string imagename;
+  datafile >> imagename;
+  textureId_ = renderer.loadImageFromFile(imagename);
+
+  datafile >> size_.w();
+  datafile >> ch; //,
+  datafile >> size_.h();
+
+  std::string animLine;
+  std::getline(datafile, animLine); // blank
+  while (std::getline(datafile, animLine)) {
+    std::regex re(R"(([a-z]+)\[([a-z_]+)\]: ([0-9,]+))");
+    std::smatch m;
+    std::regex_match(animLine, m, re);
+
+    std::vector<int> frames;
+    auto framestrs = splitStr<std::list<std::string>>(m[3], ",");
+    for (const std::string& f : framestrs) {
+      frames.push_back(std::stoi(f));
+    }
+
+    int animId = animations_.size();
+    animations_.push_back(std::move(frames));
+
+    Direction dir = directionFromString(std::string(m[2]));
+
+    if (m[1] == "still") {
+      stillAnims_[dir] = animId;
+    } else {
+      walkingAnims_[dir] = animId;
+    }
+  }
+
+  updateAnimation();
+}
+
+void Sprite::setDirection(Direction dir) {
+  if (curDir_ != dir) {
+    curDir_ = dir;
+    updateAnimation();
+  }
+}
+
+void Sprite::setWalking(bool walking) {
+  if (isWalking_ != walking) {
+    isWalking_ = walking;
+    updateAnimation();
+  }
+}
+
+void Sprite::updateAnimation() {
+  if (isWalking_) {
+    curAnim_ = walkingAnims_[curDir_];
+  } else {
+    curAnim_ = stillAnims_[curDir_];
+  }
+  curFrame_ = 0;
+}
+
+void Sprite::tickAnim() {
+  curFrame_++;
+  if (curFrame_ >= animations_[curAnim_].size()) {
+    curFrame_ = 0;
+  }
 }
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