Elemental enemy to block the main lair entrance

[jaygarcia]

using resources/sprites/enemies/chara_elemental_skulls.bmp

• Create 4 new Grunt types that are ONLY affected by spells using the following rules:

WATER kills FIRE
FIRE kills ENERGY
ENERGY kills EARTH
EARTH kills WATER

• One spell attack kills the enemy
• To be placed in front of the OW2 DGN5 (final lair) entrance
• oscillate from side to side ~48pixels at different rates (1 rate per element)
• If the player bumps into the enemy, it's instant death
• Once the player kills all 4 enemies, we save its state (like the environment/GChestProcess.cpp)