From Heavy Iron Modding

Games usedThe SpongeBob SquarePants Movie
Offset Type Variable Description
0x50 AssetID grupID
0x54 int spawnMode 1 = Enemies won't respawn again until all the enemies are defeated. 2 = the buckotron spawns all enemies at once and doesn't spawn anymore until all enemies are defeated. 3 = All enemies spawn at once one time, it continues normally after that
0x58 float spawnDelay Delay before next spawn
0x5C int flags 0 = Resume, 1 = Paused
0x60 int maxSpawn Number of Enemies to spawn before becoming inactive