1 files changed, 161 insertions, 0 deletions
diff --git a/src/Level.cpp b/src/Level.cpp
new file mode 100644
index 0000000..6db4b4e
--- /dev/null
+++ b/src/Level.cpp
@@ -0,0 +1,161 @@
+//========================================================================
+// dng
+//------------------------------------------------------------------------
+// Copyright (c) 2022 Steph Enders <steph@senders.io>
+//
+// This software is provided 'as-is', without any express or implied
+// warranty. In no event will the authors be held liable for any damages
+// arising from the use of this software.
+//
+// Permission is granted to anyone to use this software for any purpose,
+// including commercial applications, and to alter it and redistribute it
+// freely, subject to the following restrictions:
+//
+// 1. The origin of this software must not be misrepresented; you must not
+//    claim that you wrote the original software. If you use this software
+//    in a product, an acknowledgment in the product documentation would
+//    be appreciated but is not required.
+//
+// 2. Altered source versions must be plainly marked as such, and must not
+//    be misrepresented as being the original software.
+//
+// 3. This notice may not be removed or altered from any source
+//    distribution.
+//
+//========================================================================
+
+#include "Level.h"
+#include "SfmlUtils.h"
+#include <fstream>
+#include <iostream>
+#include <string>
+
+bool canStep(Pos pos, int dx, int dy, std::vector<std::vector<char>> map) {
+  return map[pos.y + dy][pos.x + dx] != WALL_SPACE;
+}
+
+void Level::loadLevelFromFile(const char *filePath) {
+  std::ifstream mapFile(filePath);
+  if (mapFile.is_open()) {
+    this->file = filePath;
+    // each element in the map has a unique ID
+    // some magic but player is always 0
+    const int playerId = 0;
+    // from 1 -> N each enemy and treasure has its  own unique ID
+    // IDs are unique entirely, not just per enemy or treasure
+
+    std::string line;
+    int y = 0;
+    while (std::getline(mapFile, line)) {
+      this->map.emplace_back();
+      int x = 0;
+      for (char c : line) {
+        if (c == WALL_TKN) {
+          this->map[y].push_back(WALL_SPACE);
+          auto w = create_wall(x, y);
+          this->displayMap.push_back(w);
+        } else if (c == EMPTY_TKN) {
+          this->map[y].push_back(BLANK_SPACE);
+          // no display info
+        } else if (c == ENEMY_TKN) {
+          auto e = create_enemy(x, y);
+          this->enemyPositions.push_back(
+              {.id = this->nextId(), .x = x, .y = y, .sprite = e});
+          this->map[y].push_back(BLANK_SPACE);
+        } else if (c == PLAYER_TKN) {
+          auto p = create_player(x, y);
+          this->player = {.id = playerId, .x = x, .y = y, .sprite = p};
+          this->map[y].push_back(BLANK_SPACE);
+        } else if (c == TREASURE_TKN) {
+          auto t = create_treasure(x, y);
+          this->treasurePositions.push_back(
+              {.id = this->nextId(), .x = x, .y = y, .sprite = t});
+          this->map[y].push_back(BLANK_SPACE);
+        } else {
+          continue;
+        }
+        ++x;
+      }
+      ++y;
+    }
+
+    unsigned long max_width = 0;
+    for (auto &rows : this->map) {
+      if (max_width < rows.size()) {
+        max_width = rows.size();
+      }
+    }
+    this->width = static_cast<int>(max_width);
+    this->height = static_cast<int>(this->map.size());
+  }
+  mapFile.close();
+}
+
+void Level::reset() {
+  this->map.clear();
+  this->treasurePositions.clear();
+  this->displayMap.clear();
+  this->enemyPositions.clear();
+  this->loadLevelFromFile(this->file);
+}
+
+bool Level::isEmpty(int x, int y) { return map[y][x] == BLANK_SPACE; }
+
+bool Level::playerCanStep(int dx, int dy) {
+  return canStep(player, dx, dy, map);
+}
+
+void Level::print() {
+  int x = 0;
+  int y = 0;
+  for (auto &row : map) {
+    for (auto &tile : row) {
+      bool printed = false;
+      if (player.x == x && player.y == y) {
+        std::cout << "p";
+        printed = true;
+      }
+      for (auto pos : enemyPositions) {
+        if (pos.x == x && pos.y == y) {
+          std::cout << "e";
+          printed = true;
+        }
+      }
+      for (auto pos : treasurePositions) {
+        if (pos.x == x && pos.y == y) {
+          std::cout << "t";
+          printed = true;
+        }
+      }
+      if (tile == WALL_SPACE) {
+        std::cout << tile;
+        printed = true;
+      }
+      if (!printed) {
+        std::cout << " ";
+      }
+      std::cout << " ";
+      ++x;
+    }
+    std::cout << "\n";
+    ++y;
+    x = 0;
+  }
+}
+
+int Level::nextId() { return idCounter++; }
+
+int Level::getEnemyIndex(int id) {
+  for (int i = 0; i < enemyPositions.size(); i++) {
+    if (enemyPositions[i].id == id) {
+      return i;
+    }
+  }
+
+  return -1;
+}
+bool Level::enemyCanStep(Pos pos, int dx, int dy) {
+  return canStep(pos, dx, dy, map);
+}
+int Level::getWidth() { return this->width; }
+int Level::getHeight() { return this->height; }