2d Platformer

• Some mechanism for blend animations

• Commands should live in the entity class, not in the state class

• Could probably cut down on the number of collision checks by only handling one side of the collision, then handling the other side of the collision without doing all the redundant calculations
• Rather than have all systems receive all messages, let systems specify which messages they're interested in
• Avoid reconstruction of entire quad tree every frame

• Floating point bug, entities vibrate on surfaces PinnedBlock(100, 230, 100, 25) PlayerBlock(100, 0, 200, 200)
• Weird falling into edge bug Jump off a platform and slide against the vertical edge of the platform
• Firing Ice Shard right next to block (work around is to send all messages as 'immediate')
• Right, Right, Left, Jump -> Zoom away