Add more complete implementation for custom new/delete, add panic

src/nostalgia/world/world.cpp

@@ -11,5 +11,31 @@
 namespace nostalgia {
 namespace world {
 
+Zone::Zone() {
+	m_bounds.x = -1;
+	m_bounds.y = -1;
+	m_bounds.width = -1;
+	m_bounds.height = -1;
+}
+
+void Zone::draw(core::Context *ctx) {
+}
+
+size_t Zone::size() {
+	return sizeof(Zone) + m_bounds.width * m_bounds.height * sizeof(TileDef);
+}
+
+TileDef *Zone::tiles() {
+	return (TileDef*) (this + 1);
+}
+
+TileDef *Zone::tile(int row, int column) {
+	return &tiles()[row * m_bounds.width + column];
+}
+
+void Zone::setTile(int row, int column, TileDef *td) {
+	tiles()[row * m_bounds.width + column] = *td;
+}
+
 }
 }