This mostly change player to be by reference instead of by index.
But additionally it does stript checks for gold in the belt, move some
value types to the initialization and short circute a few functiongs.
- controller: Move inventory coordinates logic to outside of the method to ease visibility and changes; Fix cursor offset when holding items on the inventory; Move cursor between edges of the inventory to ease movement inside.
- Renamed InvGetCoord to InvGetSlotCoord.
- adding more SLOTXY_xxx options to improve controls code
- changed inventory slots comment to improve legibility
- fixing bugs and centering sprite on the slot
- fix belt item movement
- slots 9 and 10 move to belt 8 when moving down using a controller
- creating function to return correct mousePos slot to remove code duplication
- create BeltGetSlotCoord to get coords for belts and remove duplicates; code cleanup.
- adding INV_ROW_SLOT_SIZE to hold the amount of slots on an inv row
- improve code for moving item to the belt when it's the last 2 slots.
- fix bug that would not update the cursor position when going up on certain conditions.
- equip equipment when pressing [use] on the controller
- moving items in the inventory as a single instance, and blocking them from moving accordingly.
- move item to belt when clicking the spell button (Y)
- resetting the cursor takes into consideration if the current slot has an item that is bigger than 1x1
- change whitespace to tabs on inv.h changes
- fixing plrctrls.cpp formatting
