Different damage types should do different things

[deontologician]

Originally, the plan was for damage types to have a rock/paper/scissors scheme in terms of attack versus defense. Once the attack/defend/mate matrix was put in place, however, this plan fell by the wayside. That needs to be implemented again, taking into account attack vs. defense only.

|-------------+------+------+-------------|
|             | fire |  ice | electricity |
|-------------+------+------+-------------|
| fire        | 0.33 | 0.66 |         1.0 |
| ice         |  1.0 | 0.33 |        0.66 |
| electricity | 0.66 |  1.0 |        0.33 |
|-------------+------+------+-------------|