src/main/java/com/raeids/stratus/mixin/GuiNewChatMixin.java


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package com.raeids.stratus.mixin;

import com.raeids.stratus.Stratus;
import com.raeids.stratus.hook.ChatHookKt;
import net.minecraft.client.Minecraft;
import net.minecraft.client.gui.ChatLine;
import net.minecraft.client.gui.GuiNewChat;
import org.spongepowered.asm.lib.Opcodes;
import org.spongepowered.asm.mixin.Final;
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.ModifyVariable;
import org.spongepowered.asm.mixin.injection.Redirect;
import org.spongepowered.asm.mixin.injection.callback.CallbackInfo;

import java.util.List;

@Mixin(GuiNewChat.class)
public class GuiNewChatMixin {
    @Shadow @Final private Minecraft mc;

    @Inject(method = "drawChat", at = @At("HEAD"))
    private void checkScreenshotKeybind(int j2, CallbackInfo ci) {
        if (Stratus.INSTANCE.getKeybind().isPressed()) {
            Stratus.INSTANCE.setDoTheThing(true);
        }
    }

    @ModifyVariable(method = "drawChat", at = @At("HEAD"), argsOnly = true)
    private int setUpdateCounterWhjenYes(int updateCounter) {
        return Stratus.INSTANCE.getDoTheThing() ? 0 : updateCounter;
    }

    @ModifyVariable(method = "drawChat", at = @At("STORE"), index = 2)
    private int setChatLimitWhenYes(int linesToDraw) {
        return Stratus.INSTANCE.getDoTheThing()
                ? GuiNewChat.calculateChatboxHeight(mc.gameSettings.chatHeightFocused) / 9
                : linesToDraw;
    }

    @Shadow @Final private List<ChatLine> drawnChatLines;

    @Redirect(method = "drawChat", at = @At(value = "FIELD", target = "Lnet/minecraft/client/gui/GuiNewChat;drawnChatLines:Ljava/util/List;", opcode = Opcodes.GETFIELD))
    private List<ChatLine> injected(GuiNewChat instance) {
        return ChatHookKt.filterMessages(drawnChatLines);
    }
}