equip weapon pickup

[ioxu]

Once weapon is in inventory, sort out what to do to equip a weapon.

• [x] add picked-up weapons to weapon inventory list, and expand list
• [x] shift weapon inventory with a Tween
• [x] hide weapon inventory slots either side of the viewable list
• [x] #41
• [x] #42
• [x] detect selecting an equip slot on release_select()
• [x] #44
• [x] #43

[ioxu]

functionally to equip a weapon it needs to be

1. re-parented under player/MeshInstance/weapon_mount
2. signals need to be connected current_weapon.connect("fire", player, "_on_weapon_fire") and weapon.connect("magazine_count_changed", dui_root, "_on_magazine_count_changed")

[ioxu]

Three nodes need to know about an equipped weapon:

1. player
2. dui_root
3. controller

[ioxu]

update player.gd _ready()

    # connect to weapon
    # TODO: replace with player function for switching weapon
    if $MeshInstance/weapon_mount.get_child_count() > 0:
        current_weapon = $MeshInstance/weapon_mount.get_child(0)

    if current_weapon:
        current_weapon.connect("fire", self, "_on_weapon_fire")