implement episode 3 battles

src/Episode3/MapState.cc

@@ -0,0 +1,95 @@
+#include "MapState.hh"
+
+using namespace std;
+
+namespace Episode3 {
+
+
+
+MapState::MapState() {
+  this->clear();
+}
+
+void MapState::clear() {
+  this->width = 0;
+  this->height = 0;
+  for (size_t y = 0; y < this->tiles.size(); y++) {
+    this->tiles[y].clear(0);
+  }
+  for (size_t z = 0; z < 2; z++) {
+    this->start_tile_definitions[z].clear(0);
+  }
+}
+
+void MapState::print(FILE* stream) const {
+  fprintf(stream, "[Map: w=%hu h=%hu]\n", this->width.load(), this->height.load());
+  for (size_t y = 0; y < this->height; y++) {
+    fputc(' ', stream);
+    for (size_t x = 0; x < this->width; x++) {
+      fprintf(stream, " %02hhX", this->tiles[y][x]);
+    }
+    fputc('\n', stream);
+  }
+}
+
+
+
+MapAndRulesState::MapAndRulesState() {
+  this->clear();
+}
+
+void MapAndRulesState::clear() {
+  this->map.clear();
+  this->num_players = 0;
+  this->unused1 = 0;
+  this->unused_by_server = 0;
+  this->num_players_per_team = 0;
+  this->num_team0_players = 0;
+  this->unused2 = 0;
+  this->start_facing_directions = 0;
+  this->unused3 = 0;
+  this->map_number = 0;
+  this->unused4 = 0;
+  this->rules.clear();
+  this->unused5 = 0;
+}
+
+
+
+bool MapAndRulesState::loc_is_within_bounds(uint8_t x, uint8_t y) const {
+  return (x < this->map.width) && (y < this->map.height);
+}
+
+bool MapAndRulesState::tile_is_vacant(uint8_t x, uint8_t y) {
+  if (!this->loc_is_within_bounds(x, y)) {
+    return false;
+  }
+  return (this->map.tiles[y][x] == 1);
+}
+
+void MapAndRulesState::set_occupied_bit_for_tile(uint8_t x, uint8_t y) {
+  this->map.tiles[y][x] |= 0x10;
+}
+
+void MapAndRulesState::clear_occupied_bit_for_tile(uint8_t x, uint8_t y) {
+  this->map.tiles[y][x] &= 0xEF;
+}
+
+
+
+OverlayState::OverlayState() {
+  this->clear();
+}
+
+void OverlayState::clear() {
+  for (size_t y = 0; y < this->tiles.size(); y++) {
+    this->tiles[y].clear(0);
+  }
+  this->unused1.clear(0);
+  this->unused2.clear(0);
+  this->unused3.clear(0);
+}
+
+
+
+} // namespace Episode3