Enemy Waves

Wave flow

Enemies come in waves during which enemies will spawn in quick succession. After each wave, the player has 30 seconds to take a break or buy items in the shop. This break time can also be skipped.
A wave usually goes as such:

graph TD;
  start([Start])--> spawntime{Is it time to<br>spawn an enemy?}
  spawntime-->|Yes| spawnenemy[Fetch enemy<br>and spawn it] 
  spawntime-->|No| wait[Wait]
  wait --> spawntime
  spawnenemy-->allspawned{Is there any<br>enemy left to fetch?}
  allspawned-->|Yes| spawntime
  allspawned-->|No| alldead{Is there any enemy<br>left on the field?}
  alldead-->|No| eee([End<br>Start of break time])
  alldead-->|Yes| wait2[Wait]
  wait2-->alldead

Loading

The "Fetch enemy and spawn it" node has 2 separate scenarios:

• Pre-entered waves
• Generated waves

Pre-entered waves

Pre-entered waves are here as a way of introducing the player to the game, or to a specific enemy. They are saved in a DataTable with rows containing a list of enemies and a minimum and maximum time between enemy spawns, like so:

In this scenario, 3 green slimes will spawn in that wave, and there will be a random waiting time between 1.5 seconds and 5 seconds between each spawn.

Generated waves

When a wave does not exist in the list (e.g. we are at wave 12, but row 12 is missing), the wave gets generated using the following system:

1. First, the wave gets assigned points.

• A wave gets 25 points times the number of the wave
• e.g. at wave 12, the wave gets 12x25 = 300 points assigned to it.

2. Then, a suitable enemy is picked based on the remaining points.

• This is done by looking into a list of enemies with points associated. As an example, there can be a basic enemy worth 10 point and a bigger one worth 50 points.
• If multiple enemies are suitable, one is picked at random

3. We spawn the enemy, if it's time. The cooldown between spawns is random between 1.5 and 5 seconds.
4. We substract the enemy's points to the wave's points, then we repeat step 2 until no suitable enemy can be found.
5. The wave ends and break time starts.