Editing Ogre:CharacterCodex:Combat:Sequence (section)

===Action Types===
There is three type of action you can make in combat : Action, Reaction and Opportunity.

====Action====
It is any use of a skill in an active manner.

====Reaction====
Reaction are actions that you make only when a certain events occurs, like being attacked, without even declaring them. They are essentially defensive in nature. They do not break your current action even if your current action ask for concentration and they are always resolve immediately. Having a reaction make your current action harder to resolved though, you suffer a penalty to your current action depending on your reaction initiative category. You don’t have to make a reaction if you don’t want to. 

{| border="1" cellpadding="5" cellspacing="0" style="text-align: left"
!Reaction Initiative category
!Current action penalty
|-
| Instantaneous
| 0
|-
| Immediate
| -1
|-
| Quick
| -2
|-
| Short
| -4
|-
| Standard
| -8
|-
| Long
| -16
|-
| Very Long
| -32
|-
| Slow
| -64
|-
| Very Slow
| -128
|}

====Opportunity====
Sometimes a combatant in a melee lets his guard down. In this case, combatants near him can take advantage of his lapse in defense to quickly act against him. These actions are called attacks of opportunity. Two kinds of actions can provoke attacks of opportunity: moving out of a threatened square and performing a non combat action within a threatened square.

'''Moving:''' Moving out of a threatened square usually provokes an action of opportunity from the threatening opponent unless you use a withdrawing action. 

'''Non combat act:''' Check skills description to see if using a particular skill provoke an attack of opportunity when used in combat.

'''Making an Attack of Opportunity:''' When an opponent in your threaten area provokes an attack of opportunity, you can either resolve your current offensive action against him or make a new offensive action. If you resolve your offensive action immediately on this opponent, you do not suffer any penalty except the normal penalty for changing target if the opponent was not your current target. If you make a new offensive action, your action is considered a reaction with the appropriate penalty to your current action. You don’t have to make an attack of opportunity if you don’t want to.