Tower Shield + Underfoot Assualt (Mouser) + Creature size

[Khell DarkWolf]

Had a question regarding tower shield and a PC of either a Small or Medium size against enemies of size.
For the sake of this example lets assume a PC of small.

diagram key:

x = empty space
E = Enemy occupying spaces
P = the PC

Tower Shield::

This massive wooden shield is nearly as tall as its user. In most situations, it provides the indicated shield bonus to your AC. As a standard action, however, you can use a tower shield to grant you total cover until the beginning of your next turn. When using a tower shield in this way, you must choose one edge of your space. That edge is treated as a solid wall for attacks targeting you only. You gain total cover for attacks that pass through this edge and no cover for attacks that do not pass through this edge (see cover, Core Rulebook 195). The shield does not, however, provide cover against targeted spells; a spellcaster can cast a spell on you by targeting the shield you are holding. You cannot bash with a tower shield, nor can you use your shield hand for anything else.

When employing a tower shield in combat, you take a –2 penalty on attack rolls because of the shield’s encumbrance.

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Underfoot Assault (Ex)::

At 1st level, if a foe whose size is larger than the mouser’s is adjacent to her and misses her with a melee attack, the mouser can as an immediate action spend 1 panache point to move 5 feet into an area of the attacker’s space. This movement does not count against the mouser’s movement the next round, and it doesn’t provoke attacks of opportunity. While the mouser is within a foe’s space, she is considered to occupy her square within that foe’s space.

While the mouser is within her foe’s space, the foe takes a –4 penalty on all attack rolls and combat maneuver checks not made against the mouser, and all of the mouser’s allies that are adjacent to both the foe and the mouser are considered to be flanking the foe. The mouser is considered to be flanking the foe whose space she is within if she is adjacent to an ally who is also adjacent to the foe. The mouser can move within her foe’s space and leave the foe’s space unhindered and without provoking attacks of opportunity, but if the foe attempts to move to a position where the mouser is no longer in its space, the movement provokes an attack of opportunity from the mouser. This deed replaces opportune parry and riposte.

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Cover::

To determine whether your target has cover from your ranged attack, choose a corner of your square. If any line from this corner to any corner of the target’s square passes through a square or border that blocks line of effect or provides cover, or through a square occupied by a creature, the target has cover (+4 to AC).

When making a melee attack against an adjacent target, your target has cover if any line from any corner of your square to the target’s square goes through a wall (including a low wall). When making a melee attack against a target that isn’t adjacent to you (such as with a reach weapon), use the rules for determining cover from ranged attacks.

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xxxxx
xxxxx
xxExx
xxPxx

We know that a tower shield placed at the north edge of the PC, is gaining full cover from the Enemy. This enemy is assumed to be a medium size.

Question 1:
What would happen if the the PC managed to occupy the enemy's square and has the tower shield deployed?
Can the Enemy attack at the PC?

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Diagram 2

xEEEx
xEEEx
xEPEx
xxXxx

The monster is huge (takes up a 3x3 space of 15 ft) and the PC has managed to get into the monsters occupying space.
If the PC (somehow) has his tower deployed on (example) his North facing of himself. What happens?

Question 2:

Can the monster attack the PC by being able to draw a line from it's (the monster's) corners to the PC's?

[avr]

The north edge of the PC's space won't be between them and the enemy if they're sharing space. In fact, no edge will be. In both cases the PC won't receive cover and can be attacked by the enemy.

[vhok]

agree with avr

[VoodistMonk]

You can forsake being under them, and instead Climb all over them!

Be a Grippli for a racial Climb speed.

1. Mouser Swashbuckler
... for BAB, HD, and Underfoot Assault

2-5. Vexing Dodger UnRogue
... for Dex to Dmg, Limb Climber, Underfoot Agility, Improved Dirty Trick, Debilitating Injury, Evasion, Sneak Attack

6-9. Mouser Swashbuckler
... Precise Strike, Swashbuckler Initiative, Swashbuckler Weapon Training

10-13. Vexing Dodger UnRogue
... Rogue's Edge (Climb), Distracting Climber

14-15. Mouser Swashbuckler
... Hamstring