Combat polish

[jyee27]

Some ideas:

• Make enemies/objects flash red when taking damage
• Add explosion effect before enemies are destroyed
• Add push force when enemies collide with the player
• Make jumping on an enemy damage them like in Mario (maybe)
• Give melee enemies an attack on a delay that the player can dodge. Make an animation for this as part of Animation polish #10.
  • Combine this with EnemyFollowPlayer.cs to make a new MeleeEnemyAI class, maybe with a parent EnemyAI class.
  • Fix the movement if you can: Enemy movement: use navmesh? #20

[mischano]

Add explosion effect before enemies get destroyed.
Add push force when enemies collide with the player.

[jyee27]

Splitting animation part into another issue: #10