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Development: Getting the min/max level of your Pokémon party

HackMew

Mewtwo Strikes Back
    • 1,314
    Posts
    18
    Years
    • Seen Oct 26, 2011

    Brief Intro

    Here I've got a couple of routines for you. They are designed to get the minimum and maximum levels respectively.

    Description

    As you can see, the routines are pretty short and simple so I did not comment them on purpose.
    Either way, here's a brief description of what happens:

    1. Get the Pokémon party level address into r1.
    2. Load the first value into r0, and assume it's the minimum (or maximum) value yet.
    3. Loop 5 times, and update the mininum (or maximum) value if needed.
    4. Get the LASTRESULT var address into r1 and store the minimum (or maximum) level.
    The minimum routine, however, is slighty different because a zero-level is not an acceptable value so there's an extra check to take that into account (otherwhise as long as your team is not full, the minimum level would always be zero, which is no good obviously). That also means the routine will loop up to 5 times rather than always 5 as it happens in the maximum routine.

    The Code


    GetMinPartyLevel


    • FireRed/LeafGreen

      Code: 
      [div="font-family:consolas,courier new,monospace"].text
.align 2
.thumb
.thumb_func
.global GetMinPartyLevel

main:
	push {r0-r3, lr}
	ldr r1, .PARTY_LVL
	ldrb r0, [r1]
	mov r3, #0x5

loop:
	add r1, #0x64
	ldrb r2, [r1]
	cmp r2, #0x0
	beq return
	cmp r2, r0
	bge next
	add r0, r2, #0x0

next:
	sub r3, #0x1
	cmp r3, #0x0
	bne loop

return:
	ldr r1, .VAR
	strh r0, [r1]
	pop {r0-r3, pc}

.align 2
.PARTY_LVL:
	.word 0x02024284 + 0x54
.VAR:
	.word 0x020270B6 + (0x800D * 2)[/div]
    • Ruby/Sapphire

      Note: The routine is the same as the FR/LG one; just replace the bottom part with the following:

      Code: 
      [div="font-family:consolas,courier new,monospace"].align 2
.PARTY_LVL:
	.word 0x03004360 + 0x54
.VAR:
	.word 0x0201E8C2 + (0x800D * 2)[/div]
    • Emerald

      Note: The routine is the same as the FR/LG one; just replace the bottom part with the following:

      Code: 
      [div="font-family:consolas,courier new,monospace"].align 2
.PARTY_LVL:
	.word 0x020244EC + 0x54
.VAR:
	.word 0x020275D6 + (0x800D * 2)[/div]

    GetMaxPartyLevel


    • FireRed/LeafGreen

      Code: 
      [div="font-family:consolas,courier new,monospace"].text
.align 2
.thumb
.thumb_func
.global GetMaxPartyLevel

main:
	push {r0-r3, lr}
	ldr r1, .PARTY_LVL
	ldrb r0, [r1]
	mov r3, #0x5

loop:
	add r1, #0x64
	ldrb r2, [r1]
	cmp r2, r0
	ble next
	add r0, r2, #0x0

next:
	sub r3, #0x1
	cmp r3, #0x0
	bne loop

return:
	ldr r1, .VAR
	strh r0, [r1]
	pop {r0-r3, pc}

.align 2
.PARTY_LVL:
	.word 0x02024284 + 0x54
.VAR:
	.word 0x020270B6 + (0x800D * 2)
[/div]
    • Ruby/Sapphire

      Note: The routine is the same as the FR/LG one; just replace the bottom part with the following:

      Code: 
      [div="font-family:consolas,courier new,monospace"].align 2
.PARTY_LVL:
	.word 0x03004360 + 0x54
.VAR:
	.word 0x0201E8C2 + (0x800D * 2)[/div]
    • Emerald

      Note: The routine is the same as the FR/LG one; just replace the bottom part with the following:

      Code: 
      [div="font-family:consolas,courier new,monospace"].align 2
.PARTY_LVL:
	.word 0x020244EC + 0x54
.VAR:
	.word 0x020275D6 + (0x800D * 2)[/div]


    This research document is Copyright © 2010 by HackMew.
    You are not allowed to copy, modify or distribute it without permission.
     
    Last edited:
    The Master said:
    Wow, this routine unlocks some pretty cool stuff, such as a FR/LG Battle Frontier-style thing (the opponents' Pokémon are the same level as your max Pokémon, for example). It's real cool. Nice one, HackMew!
    Click to expand...

    You're welcome :)


    0m3GA ARS3NAL said:
    don't mean to put ya down, but couldn't this be done with a script as well?
    Click to expand...

    As far as I know, there's no special that can do that. Feel free to prove me wrong.
     
    No specials really it would just be a long script I suppose... Probably much more space-efficient to use your routine... (A script version would require tons of copybyte's and comparefarbytes' as well as knowing RAM locations of variables, it's better to just use your routine and call it with callasm...)
     
    0m3GA ARS3NAL said:
    No specials really it would just be a long script I suppose... Probably much more space-efficient to use your routine... (A script version would require tons of copybyte's and comparefarbytes' as well as knowing RAM locations of variables, it's better to just use your routine and call it with callasm...)
    Click to expand...

    Yeah, indeed. Those routines are definitely more space- and time-efficient then any scripting equivalents.
     
    *Big big Bump*

    Wow. This is so cool!
    I could use this for my hack :P

    And yeah, it takes less space (about 28 bytes in hex?) than the longer script version.
    SO cool. :)
     
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