InitHEADmain

1 files changed, 26 insertions, 0 deletions

diff --git a/Homework/cs5410/bbiy/src/systems/render.js b/Homework/cs5410/bbiy/src/systems/render.js
new file mode 100644
index 0000000..e0db7e3
--- /dev/null
+++ b/Homework/cs5410/bbiy/src/systems/render.js
@@ -0,0 +1,26 @@
+game.system.Render = (graphics) => {
+  const update = (elapsedTime, entities, _changedIds) => {
+    graphics.clear();
+
+    const entitiesArray = Object.keys(entities).map(key => entities[key]);
+    const sortedEntities = entitiesArray.sort((a, b) => {
+      const aprior = a.hasComponent("loadPriority") ? a.components.loadPriority.priority : 0;
+      const bprior = b.hasComponent("loadPriority") ? b.components.loadPriority.priority : 0;
+      return bprior - aprior;
+    });
+
+    sortedEntities.forEach((entity) => {
+      if (entity.hasComponent("position") && entity.hasComponent("appearance") && entity.hasComponent("alive")) {
+        const drawSpec = {...entity.components.position, ...entity.components.appearance};
+        if (entity.hasComponent("sprite")) {
+          game.sprites[entity.components.sprite.spriteName].draw(elapsedTime, drawSpec);
+        } else if (entity.hasComponent("particles") && entity.particleSprite) {
+          entity.particleSprite.draw(elapsedTime, drawSpec); 
+        }
+      }
+    });
+
+    return new Set();
+  };
+  return { update };
+};