Development: Double Wild Pok?mon Battles in Emerald

GoGoJJTech · Jan 27, 2016

Double Wild Pokémon Battles in Emerald

So I ported what was on this thread, which was ported from Jambo51's 649 patch.

Simply put, it's the same thing, you just need a bunch of changes :P

Before I put the code up, I'll list the issues:

You can use the bag twice (two pokeballs for example [dunno how it's handled in Unova games])

You can run twice (Can't escape! Got away safely! [still dunno how it works in Unova games])

Upon fainting, it asks if you want to send out the next Pokémon or run. If both faint, it does it twice (still have no idea how it works in blah blah blah games)

The Pokémon in slot 0 (the one on the right) is the one displayed when you successfully catch

Only the 0th Pokémon (the one on the right again) is faded in the battle intro

So the code:

Spoiler:

1.asm:

Spoiler:

Code:

.thumb /*0xB4F30 - 05 49 08 47 0xB4F48 - XX+1 XX XX 08 0xB06D4 - 00 00*/ str r0, [sp] ldr r0, .opponent_slot mov r1, r6 @Pokemon mov r2, r7 @Level mov r3, #0x20 ldr r4, .pokemon_make_with_nature bl linker_4 mov r1, #0 mov r2, #0 loop_1: mov r4, #0x64 ldr r0, .party_slot add r0, #0x56 mul r4, r1 add r0, r0, r4 ldrh r0, [r0] cmp r0, #0 bne add_1 increment: add r1, #1 cmp r1, #6 bne loop_1 cmp r2, #2 blt back_1 ldr r1, .offset ldr r2, .save_block_1 ldr r2, [r2] ldrb r3, [r2, #4] @bank lsl r3, r3, #2 add r1, r1, r3 ldr r1, [r1] ldrb r3, [r2, #5] @map lsl r3, r3, #2 add r1, r1, r3 ldr r1, [r1] ldr r1, [r1] ldr r3, [r1, #0x10] ldr r2, .tileset_table cmp r3, r2 bne back_1 bl get_block_id mov r2, #0 loop_2: mov r1, pc add r1, #0x92 lsl r3, r2, #2 add r1, r1, r3 ldrh r3, [r1] cmp r0, r3 beq calculation ldr r1, .end cmp r1, r3 beq back_1 add r2, #1 b loop_2 add_1: add r2, #1 b increment back_1: mov r0, #0 ldr r1, .battle_flag str r0, [r1] back_2: add sp, sp, #0xC pop {r4-r7, pc} get_block_id: push {lr} ldr r0, .npc_state ldrh r1, [r0, #0x12] @Y ldrh r0, [r0, #0x10] @X ldr r4, .getter bl linker_4 pop {pc} calculation: ldrb r4, [r1, #2] cmp r4, #0x63 bhi doubletwo bl random mov r1, #0x64 bl mod_func doublethree: add r1, r4, #0 cmp r0, r1 bge back_1 double: mov r0, #1 ldr r1, .battle_flag str r0, [r1] ldr r4, .rand_grass bl linker_4 ldr r1, [sp, #0x10] ldr r1, [r1, #4] lsl r0, r0, #2 add r0, r0, r1 ldrh r4, [r0, #2] ldr r1, .generate bl linker_1 mov r7, r0 bl random mov r1, #0x19 bl mod_func ldr r0, .opponent_slot add r0, #0x64 mov r1, r4 @Pokemon mov r2, r7 @Level mov r3, #0x20 ldr r4, .pokemon_make_with_nature bl linker_4 b back_2 doubletwo: mov r0, #0 b doublethree mod_func: ldr r3, .mod_addr bx r3 random: ldr r2, .rand bx r2 linker_1: bx r1 linker_4: bx r4 .word 0x0005000D .word 0x000501C6 .word 0x000501C7 .hword 0xFEFE .align 2 .opponent_slot: .word 0x02024744 .pokemon_make_with_nature: .word 0x08067E90+1 .party_slot: .word 0x020244EC .battle_flag: .word 0x02022FEC .offset: .word 0x08486578 .save_block_1: .word 0x03005D8C .tileset_table: .word 0x083DF704 .npc_state: .word 0x02037350 .getter: .word 0x08088224+1 .end: .word 0x0000FEFE .mod_addr: .word 0x082E7BE0+1 .rand: .word 0x0806F5CC+1 .rand_grass: .word 0x080B4AC8+1 .generate: .word 0x08E40900+1 @pointer to generate.asm+1

2.asm:

Spoiler:

Code:

.thumb .align 2 /*0x3ED80 - 00 48 00 47 JJ+1 JJ JJ 08*/ ldr r0, [r1] cmp r0, #5 beq .L_1 mov r1, #1 and r0, r1 cmp r0, #0 bne .L_0 .L_1: ldr r1, =0x803ED8A+1 bx r1 .L_0: ldr r1, =0x803EE06+1 bx r1

3.asm:

Spoiler:

Code:

.thumb .align 2 /*4A60A - 00 47 4A654 - ZZ+1 ZZ ZZ 08*/ ldr r0, =0x2022FEC ldr r0, [r0] cmp r0, #5 beq double audio: ldr r0, =0x161 ldr r1, =0x80A3778+1 bl jump ldr r1, =0x804A60E+1 jump: bx r1 double: ldr r0, =0x2024084+0x58 mov r1, #0x58 lsl r1, r1, #1 add r1, r0, r1 ldrh r0, [r0, #0x28] ldrh r1, [r1, #0x28] add r0, r0, r1 cmp r0, #0 beq audio ldr r1, =0x804A616+1 bx r1

4.asm:

Spoiler:

Code:

.thumb .align 2 /*0x56318 - 30 47 0x5634C - MM+1 MM MM 08 0x566BC - 00 00 0x56702 - 00 00 0x5674E - 00 00 0x5679E - 00 00 0x56DF2 - 08 1C 0x56D14 - 00 00 0x56D40 - 00 00 0x56D60 - 00 00 0x56D7E - 04 1C 0x5671C - 0C 42 02 02 0x56840 - 0C 42 02 02 0x56DC0 - 0C 42 02 02 0x56E20 - 0C 42 02 02*/ ldr r6, =0x2022FEC ldr r6, [r6] cmp r6, #5 bne normal ldr r6, =0x2024084+0x58 ldrh r6, [r6, #0x28] cmp r6, #0 bne case_1 case_2: mov r0, #3 b back case_1: mov r0, #1 b back normal: mov r1, #1 eor r0, r1 back: ldr r6, =0x202420C ldr r1, =0x805631C+1 bx r1

5.asm:

Spoiler:

Code:

.thumb .align 2 /*0x56850 - 00 48 00 47 NN+1 NN NN 08*/ push {r4, r5, lr} ldr r4, =0x02024744 ldr r0, =0x0202420C ldrb r0, [r0] lsr r0, r0, #1 mov r1, #0x64 mul r0, r1 add r0, r0, r4 add r4, r0, #0 mov r1, #0xb ldr r2, =0x08056858+1 bx r2

6.asm:

Spoiler:

Code:

.thumb .align 2 /*0x568D2 - 00 47 0x568F4 - UU+1 UU UU 08*/ ldr r0, =0x02024744 ldr r1, =0x0202420C ldrb r1, [r1] lsr r1, r1, #1 mov r2, #0x64 mul r1, r2 add r0, r1, r0 mov r1, #0xb ldr r2, =0x080568D4+1 bx r2

7.asm:

Spoiler:

Code:

.thumb .align 2 /*0x170E50 - 10 47 0x170ED8 - QQ+1 QQ QQ 08*/ ldr r2, =0x02038437 ldr r0, =0x02022FEC ldr r0, [r0] cmp r0, #5 bne normal ldr r0, =0x02024084+0x58 mov r1, #0x58 lsl r1, r1, #1 add r1, r0, r1 ldrh r1, [r1, #0x28] cmp r1, #0 beq normal mov r1, #3 strb r1, [r2] normal: mov r8, r2 ldr r0, =0x08170E52+1 bx r0

pokeball.asm:

Spoiler:

Code:

.thumb /*Change all 95 E3 0F 08 to the pointer (+1) to this routine, and please do the change before inserting the routine!!!!!!!!!!!!!!!!!!*/ ldr r1, .battle_flag ldr r1, [r1] cmp r1, #5 bne normal ldr r1, .struct mov r2, #0x58 lsl r2, r2, #1 add r2, r1, r2 ldrh r1, [r1, #0x28] ldrh r2, [r2, #0x28] mul r1, r2 cmp r1, #0 bne two_mon normal: ldr r1, .pokeball bx r1 two_mon: push {r4,r5, lr} mov r0, #0 mov r1, #2 ldr r2, .string_shown ldr r3, .bag_print ldr r4, .texter bl jump pop {r4,r5, pc} jump: bx r4 .align 2 .battle_flag: .word 0x2022FEC .pokeball: .word 0x80FE394+1 .struct: .word 0x2024084+0x58 .bag_print: .word 0x81ABBBC+1 .texter: .word 0x081ABB4C+1 .string_shown: .word 0x08E40A00 @Pointer to text

generate.asm:

Spoiler:

Code:

.thumb PUSH {R4,R5,LR} MOV R4, R0 LDRB R0, [R4,#1] LDRB R1, [R4] CMP R0, R1 BCC loc_1 LDRB R5, [R4] B loc_2 loc_1: LDRB R5, [R4,#1] LDRB R0, [R4] loc_2: SUB R4, R0, R5 ADD R4, #1 LSL R4, R4, #0x18 LSR R4, R4, #0x18 LDR R3, =0x806F5CC+1 @rand BL linker LSL R0, R0, #0x10 LSR R0, R0, #0x10 MOV R1, R4 LDR R3, =0x82E7650+1 @__modsi3 BL linker LSL R0, R0, #0x18 LSR R0, R0, #0x18 ADD R0, R5, R0 LSL R0, R0, #0x18 LSR R0, R0, #0x18 POP {R4,R5} POP {R1} BX R1 linker: bx R3

generate.asm is not present in the FireRed versions of this implementation. The reason is that this function is actually from FireRed. Since it's not present in Emerald, I just copied it. Just thought you might want to know since this'd make the overall size of this hack larger than the FireRed one. :)

1.asm generates a table

Code:

.word 0x0005000D .word 0x000501C6 .word 0x000501C7 .hword 0xFEFE

0005 = 0x5
000D = 0xD
the 5 is the percent chance that a double wild battle will occur. To have double wild battles every single time, you'd put 0x64 (100 in decimal)
0xD is the tile in the tileset that it will occur in. The tiles I have here are the grass tiles used in general areas in Emerald, tileset 0 of course.
0xFEFE ends the table, so be sure to keep it at the end!

This hack does not allow double wild Pokémon if the player only has one Pokémon available to battle!

Againsts · Jan 27, 2016

This is great.

Jaizu · Mar 13, 2016

Do you mind about fixing those bugs?
The video looks great, thanks for the port.

Xencleamas · Mar 23, 2016

GoGoJJTech said:
You can use the bag twice (two pokeballs for example [dunno how it's handled in Unova games])

As far as I remember, you cannot throw a Poke Ball (or any other) when there are two of them. When you faint one of the two, you can now catch the other one.

Example:

Turn 1. Poochyena and Zigzagoon. Poke Ball usage disabled.
Turn 2. Poochyena has been fainted. Zigzagoon alone. Poke Ball usage enabled.

Hope I'm correct about it.

druidpanda · Jan 20, 2018

Incineroar said:
1. Bag is allowed to be used twice (Example: healing), although I'd have to check the case with Pokeballs. I can test this for you really quickly here.
2. I think Run is only done once.
3. Same as above, I can check for you, however, I think what happens is once a Pokemon faints, the game will immediately make you send out a replacement.

Give me 10 minutes and I can check both for you :)

Okay, tests indicate:
1. Bag can be used twice for healing. HOWEVER, if a Pokeball is tossed, it can only be on the first Pokemon. If you try to use a Pokeball with the second Pokemon, it'll tell you "It's impossible to aim without being focused!" If you do toss a Pokeball with the first Pokemon, the second Pokemon doesn't get to do anything.
2. First time Run is selected, the game will try to get you to run. If it fails, it skips the second Pokemon.
3. If any Pokemon faint on the field, the game waits for all moves to proceed and all items to be used, then prompts you to send out new Pokemon. If both faint, it'll ask for the first, then immediately after the second, then it'll show them going out.

Can you please do a patch? T_T i don't know nothing about ASM and i need this for my game. I'll be granted

Delta231 · Jan 20, 2018

druidpanda said:
Can you please do a patch? T_T i don't know nothing about ASM and i need this for my game. I'll be granted

Use Dizzy's Battle Engine

Development: Double Wild Pok?mon Battles in Emerald

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GoGoJJTech

(☞ﾟヮﾟ)☞ http://GoGoJJTech.com ☜(ﾟヮﾟ☜)

Againsts

Jaizu

Average rom hacker

Xencleamas

druidpanda

Delta231

A noob