[Battle] Preventing a wild Pokemon from being caught [gen 3]

[Sapphire Jester]

You know how in Black 2 and White 2 you are unable to capture the wild fused Kyurem? I want to do something like that in my hack, where you have to battle a legendary Pokemon but aren't allowed to catch them. Has someone figured out a way to do so? All I could think of is setting the catch rate to zero but that would still allow the player to (uselessly) throw Pokeballs.

 

[ghoulslash]

You know how in Black 2 and White 2 you are unable to capture the wild fused Kyurem? I want to do something like that in my hack, where you have to battle a legendary Pokemon but aren't allowed to catch them. Has someone figured out a way to do so? All I could think of is setting the catch rate to zero but that would still allow the player to (uselessly) throw Pokeballs.

Here is a routine I wrote for dream ball/sport ball that prevents you from using the pokeball if you aren't in the correct map. You could easily add in a wild pokemon species check to prevent use against a pokemon as well. Do you know assembly language at all?

EDIT: this is for FR. I'm not sure what the hook would be for emerald currently.

Spoiler:

.text
.align 2
.thumb
.thumb_func
.global prevent_pokeball_usage
/*
00 49 08 47 (xx+1) xx xx 08 at a1e1c

*/

.equ Offset, 0x08xxxxxx		@where you will insert

main:
	push {r0, r4, lr}
	ldr r0, =(0x0203ad30)
	ldrh r0, [r0]
	cmp r0, #0xx		@ item ID of dream ball
	beq DreamBall
	cmp r0, #0xZZ		@ item ID of sport ball
	bne usable
	
SportBall:
	ldr r0, =(0x03005008)
	ldr r0, [r0]
	ldrb r1, [r0, #0x4]
	ldrb r0, [r0, #0x5]
	cmp r0, #0xYY	@ national forest bank num
	bne prevent
	cmp r0, #0xYY	@ map num
	bne prevent
	b usable
	
DreamBall:
	ldr r0, =(0x03005008)
	ldr r0, [r0]
	ldrb r1, [r0, #0x4]
	ldrb r0, [r0, #0x5]
	cmp r1, #0xYY		@ bank number for entree foreset
	bne prevent
	cmp r0, #0xYY		@ map number for entree forest
	bne prevent

usable:
	pop {r0}
	mov r4, r0
	bl GetInfo
	ldr r1, =(0x080a1e26 +1)
	bx r1

prevent:
	pop {r0}
	mov r1, #0x2
	ldr r2, =(Offset+prevent_string)	@ or just put in offset
	ldr r3, =(0x0810a1f8 +1)
	bl BagPrint
	pop {r4, pc}
	
BagPrint:
	ldr r4, =(0x08108e70 +1)
	bx r4

GetInfo:
	ldr r3, =(0x08040f6c +1)
	bx r3

prevent_string:
.byte [string], 0xff

 

[Sapphire Jester]

Wow, I didn't expect such a quick response. Thank you very much.

Truthfully I don't know assembly language, though if that's what's needed to add this feature then I'll have to learn it. I'm still in the planning stages of figuring out everything I want to do with my hack, still teaching myself the basics. I'll be sure to remember this code once I do get to the point that I can use it.

 

[ghoulslash]

Wow, I didn't expect such a quick response. Thank you very much.

Truthfully I don't know assembly language, though if that's what's needed to add this feature then I'll have to learn it. I'm still in the planning stages of figuring out everything I want to do with my hack, still teaching myself the basics. I'll be sure to remember this code once I do get to the point that I can use it.

No problem! Let me know if you need any help configuring the function to accomodate your request.

If you want to learn a new coding language going forward, it might help to understand assembly, but all of the dissasembly projects are done in C, so that would be more beneficial.

Good luck with your hack!

 

[Noodlewhiz]

You could also use this routine made by Squeetz: https://pastebin.com/fH4z4PCS
It allows you to toggle the capturability of Pokemon by setting a flag.

 

[Just A Remixer]

Well at least there is one of these for FR. Honestly, Fire Red gets to much attention, which is a good thing, and a BAD thing