Update multiple HUD elements simultaneously [4.5.9]

[dale_coop]

One of the somewhat frustrating limitations of NESmaker is that you can only update one HUD element at a time (if you're using the normal tile based HUD)
Indeed, if you have multiple UpdateHudElement calls in succession in the code, only the last one is taken into account >_<
For example, when you do:

;; refill Ammo:
LDA #$05
STA myAmmo
UpdateHudElement #$03

;; refill Health:
LDA myMaxHealth
STA myHealth
UpdateHudElement #$02

Here's a small fix that will now ensure that all UpdateHudElements are considered, allowing you to update multiple HUD elements simultaneously.



Modify the UpdateHudElement.asm script that is located in the "GameEngineData\Routines\BASE_4_5\System\Macros" folder.
Replace the content of that script with that code:

MACRO UpdateHudElement arg0;, arg1
    ;;; arg 0, which element to update.
    ;;; what variable should we update?
    
    TYA
    PHA
    LDY arg0
    ;; LDA ValToBitTable_inverse,y
    LDA hudUpdates                    ;; dale_coop: for multiple updates at once
    ORA ValToBitTable_inverse,y        ;; dale_coop: for multiple updates at once
    STA hudUpdates
    PLA
    TAY
    
    ENDM

That's it. Now it should work.

 

[Peter Schmitz]

That's great news and will be very useful

 

[tbizzle]

Wow! That is what I needed! Thank you @dale_coop !