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feat(coremod): FishingRodCastEvent.Pre
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@WakelessSloth56
WakelessSloth56 committed Sep 17, 2022
1 parent c4eb51d commit ba7263a
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Showing 2 changed files with 186 additions and 0 deletions.
1 change: 1 addition & 0 deletions src/main/resources/META-INF/coremods.json
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@@ -0,0 +1 @@
{ "arnicalib.fishing_rod_item": "coremods/fishing_rod_item.js" }
185 changes: 185 additions & 0 deletions src/main/resources/coremods/fishing_rod_item.js
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@@ -0,0 +1,185 @@
function initializeCoreMod() {
ASMAPI = Java.type('net.minecraftforge.coremod.api.ASMAPI');

Opcodes = Java.type('org.objectweb.asm.Opcodes');

InsnList = Java.type('org.objectweb.asm.tree.InsnList');

VarInsnNode = Java.type('org.objectweb.asm.tree.VarInsnNode');
MethodInsnNode = Java.type('org.objectweb.asm.tree.MethodInsnNode');
LabelNode = Java.type('org.objectweb.asm.tree.LabelNode');
LocalVariableNode = Java.type('org.objectweb.asm.tree.LocalVariableNode');

return {
'FishingRodItem#use': {
target: {
type: 'METHOD',
class: 'net.minecraft.world.item.FishingRodItem',
methodName: ASMAPI.mapMethod('m_7203_'),
methodDesc:
'(Lnet/minecraft/world/level/Level;Lnet/minecraft/world/entity/player/Player;Lnet/minecraft/world/InteractionHand;)Lnet/minecraft/world/InteractionResultHolder;',
},
transformer: function (methodNode) {
var toInject = new InsnList();
{
var fn_start = new LabelNode();
var fn_end = new LabelNode();
methodNode.localVariables.add(
new LocalVariableNode(
'preEvent',
'Lorg/auioc/mcmod/arnicalib/server/event/impl/FishingRodCastEvent$Pre;',
null,
fn_start,
fn_end,
7
)
);
toInject.add(fn_start);
toInject.add(new VarInsnNode(Opcodes.ALOAD, 2));
toInject.add(new VarInsnNode(Opcodes.ALOAD, 1));
toInject.add(new VarInsnNode(Opcodes.ALOAD, 4));
toInject.add(new VarInsnNode(Opcodes.ILOAD, 5));
toInject.add(new VarInsnNode(Opcodes.ILOAD, 6));
toInject.add(
new MethodInsnNode(
Opcodes.INVOKESTATIC,
'org/auioc/mcmod/arnicalib/server/event/ServerEventFactory',
'firePreFishingRodCastEvent',
'(Lnet/minecraft/world/entity/player/Player;Lnet/minecraft/world/level/Level;Lnet/minecraft/world/item/ItemStack;II)Lorg/auioc/mcmod/arnicalib/server/event/impl/FishingRodCastEvent$Pre;',
false
)
);
toInject.add(new VarInsnNode(Opcodes.ASTORE, 7));
toInject.add(new VarInsnNode(Opcodes.ALOAD, 7));
toInject.add(
new MethodInsnNode(
Opcodes.INVOKEVIRTUAL,
'org/auioc/mcmod/arnicalib/server/event/impl/FishingRodCastEvent$Pre',
'getSpeedBonus',
'()I',
false
)
);
toInject.add(new VarInsnNode(Opcodes.ISTORE, 5));
toInject.add(new VarInsnNode(Opcodes.ALOAD, 7));
toInject.add(
new MethodInsnNode(
Opcodes.INVOKEVIRTUAL,
'org/auioc/mcmod/arnicalib/server/event/impl/FishingRodCastEvent$Pre',
'getLuckBonus',
'()I',
false
)
);
toInject.add(new VarInsnNode(Opcodes.ISTORE, 6));
toInject.add(fn_end);
}

var at = ASMAPI.findFirstInstructionBefore(
methodNode,
Opcodes.NEW,
0
);
methodNode.instructions.insertBefore(
methodNode.instructions.get(
methodNode.instructions.indexOf(at) - 1
),
toInject
);

methodNode.visitMaxs(14, 8);

// print(ASMAPI.methodNodeToString(methodNode));
return methodNode;
},
},
};
}

//! SRG <-> MCP
/*
m_7203_ use
*/

//! LocalVariableTable
/*
Slot Name Signature
5 i I
5 j I
6 k I
0 this Lnet/minecraft/world/item/FishingRodItem;
1 p_41290_ Lnet/minecraft/world/level/Level;
2 p_41291_ Lnet/minecraft/world/entity/player/Player;
3 p_41292_ Lnet/minecraft/world/InteractionHand;
4 itemstack Lnet/minecraft/world/item/ItemStack;
+ 7 preEvent Lorg/auioc/mcmod/arnicalib/server/event/impl/FishingRodCastEvent$Pre;
*/

//! Code
/*
public InteractionResultHolder<ItemStack> use(Level p_41290_, Player p_41291_, InteractionHand p_41292_) {
ItemStack itemstack = p_41291_.getItemInHand(p_41292_);
if (p_41291_.fishing != null) {
//_ ...
} else {
//_ ...
if (!p_41290_.isClientSide) {
int k = EnchantmentHelper.getFishingSpeedBonus(itemstack);
int j = EnchantmentHelper.getFishingLuckBonus(itemstack);
+ var preEvent = org.auioc.mcmod.arnicalib.server.event.ServerEventFactory.firePreFishingRodCastEvent(p_41291_, p_41290_, itemstack, k, j);
+ k = preEvent.getSpeedBonus();
+ j = preEvent.getLuckBonus();
p_41290_.addFreshEntity(new FishingHook(p_41291_, p_41290_, j, k));
}
//_ ...
}
return InteractionResultHolder.sidedSuccess(itemstack, p_41290_.isClientSide());
}
* ========== ByteCode ========== *
//_ ...
L9
LINENUMBER 33 L9
ALOAD 1
GETFIELD net/minecraft/world/level/Level.isClientSide : Z
IFNE L10
L11
LINENUMBER 34 L11
ALOAD 4
INVOKESTATIC net/minecraft/world/item/enchantment/EnchantmentHelper.getFishingSpeedBonus (Lnet/minecraft/world/item/ItemStack;)I
ISTORE 5
L12
LINENUMBER 35 L12
ALOAD 4
INVOKESTATIC net/minecraft/world/item/enchantment/EnchantmentHelper.getFishingLuckBonus (Lnet/minecraft/world/item/ItemStack;)I
ISTORE 6
L13
LINENUMBER 36 L13
+ L14
+ ALOAD 2
+ ALOAD 1
+ ALOAD 4
+ ILOAD 5
+ ILOAD 6
+ INVOKESTATIC org/auioc/mcmod/arnicalib/server/event/ServerEventFactory.firePreFishingRodCastEvent (Lnet/minecraft/world/entity/player/Player;Lnet/minecraft/world/level/Level;Lnet/minecraft/world/item/ItemStack;II)Lorg/auioc/mcmod/arnicalib/server/event/impl/FishingRodCastEvent$Pre;
+ ASTORE 7
+ ALOAD 7
+ INVOKEVIRTUAL org/auioc/mcmod/arnicalib/server/event/impl/FishingRodCastEvent$Pre.getSpeedBonus ()I
+ ISTORE 5
+ ALOAD 7
+ INVOKEVIRTUAL org/auioc/mcmod/arnicalib/server/event/impl/FishingRodCastEvent$Pre.getLuckBonus ()I
+ ISTORE 6
+ L15
ALOAD 1
NEW net/minecraft/world/entity/projectile/FishingHook
DUP
ALOAD 2
ALOAD 1
ILOAD 6
ILOAD 5
INVOKESPECIAL net/minecraft/world/entity/projectile/FishingHook.<init> (Lnet/minecraft/world/entity/player/Player;Lnet/minecraft/world/level/Level;II)V
INVOKEVIRTUAL net/minecraft/world/level/Level.addFreshEntity (Lnet/minecraft/world/entity/Entity;)Z
POP
//_ ...
- MAXLOCALS = 7
+ MAXLOCALS = 8
*/

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