dynmap/fabric-1.15.2/src/main/java/org/dynmap/fabric_1_15_2/mixin/ServerPlayNetworkHandlerMixin.java

package org.dynmap.fabric_1_15_2.mixin;

import net.minecraft.network.packet.c2s.play.ChatMessageC2SPacket;
import net.minecraft.server.network.ServerPlayNetworkHandler;
import net.minecraft.server.network.ServerPlayerEntity;
import org.dynmap.fabric_1_15_2.event.ServerChatEvents;
import org.spongepowered.asm.mixin.Mixin;
import org.spongepowered.asm.mixin.Shadow;
import org.spongepowered.asm.mixin.injection.At;
import org.spongepowered.asm.mixin.injection.Inject;
import org.spongepowered.asm.mixin.injection.callback.CallbackInfo;
import org.spongepowered.asm.mixin.injection.callback.LocalCapture;

@Mixin(ServerPlayNetworkHandler.class)
public abstract class ServerPlayNetworkHandlerMixin {
    @Shadow
    public ServerPlayerEntity player;

    @Inject(
            method = "onChatMessage",
            at = @At(
                    value = "INVOKE",
                    target = "Lnet/minecraft/server/PlayerManager;broadcastChatMessage(Lnet/minecraft/text/Text;Z)V",
                    shift = At.Shift.BEFORE
            ),
            locals = LocalCapture.CAPTURE_FAILSOFT
    )
    public void onGameMessage(ChatMessageC2SPacket packet, CallbackInfo info, String string) {
        ServerChatEvents.EVENT.invoker().onChatMessage(player, string);
    }
}