From 763bd80603dbace9f14c25309159ed07ec6e9a93 Mon Sep 17 00:00:00 2001
From: Kelly Rauchenberger <fefferburbia@gmail.com>
Date: Sat, 30 Jan 2021 11:50:30 -0500
Subject: Added sprite Y sorting

---
 src/game.cpp | 20 ++++++++++++++++++++
 1 file changed, 20 insertions(+)
 create mode 100644 src/game.cpp

(limited to 'src/game.cpp')

diff --git a/src/game.cpp b/src/game.cpp
new file mode 100644
index 0000000..ccca10f
--- /dev/null
+++ b/src/game.cpp
@@ -0,0 +1,20 @@
+#include "game.h"
+
+int Game::addSprite(Sprite sprite) {
+  int id = sprites_.size();
+  sprites_.push_back(std::move(sprite));
+  spritesByY_.emplace(sprite.loc().y(), id);
+  return id;
+}
+
+void Game::moveSprite(int id, vec2i newLoc) {
+  Sprite& sprite = sprites_.at(id);
+  bool changedY = (sprite.loc().y() != newLoc.y());
+  if (changedY) {
+    spritesByY_.erase(std::make_tuple(sprite.loc().y(), id));
+  }
+  sprite.loc() = newLoc;
+  if (changedY) {
+    spritesByY_.emplace(newLoc.y(), id);
+  }
+}
\ No newline at end of file
-- 
cgit 1.4.1