From e3a2f1cfbe1489938e3016d3eb664e74e463b8e3 Mon Sep 17 00:00:00 2001
From: Flyinghead <raphael.jean@gmail.com>
Date: Mon, 6 Sep 2021 17:16:41 +0200
Subject: [PATCH] ggpo: transmit RT and LT as digital inputs

---
 core/network/ggpo.cpp | 18 ++++++++++++++++++
 1 file changed, 18 insertions(+)

diff --git a/core/network/ggpo.cpp b/core/network/ggpo.cpp
index 76f42b846..b5dbb0a37 100644
--- a/core/network/ggpo.cpp
+++ b/core/network/ggpo.cpp
@@ -424,6 +424,13 @@ void getInput(u32 out_kcode[4])
 	out_kcode[1] = ~inputs[1];
 	//out_kcode[2] = ~inputs[2];
 	//out_kcode[3] = ~inputs[3];
+	if (settings.platform.system != DC_PLATFORM_NAOMI)
+	{
+		rt[0] = (inputs[0] & EMU_BTN_TRIGGER_RIGHT) != 0 ? 255 : 0;
+		lt[0] = (inputs[0] & EMU_BTN_TRIGGER_LEFT) != 0 ? 255 : 0;
+		rt[1] = (inputs[1] & EMU_BTN_TRIGGER_RIGHT) != 0 ? 255 : 0;
+		lt[1] = (inputs[1] & EMU_BTN_TRIGGER_LEFT) != 0 ? 255 : 0;
+	}
 }
 
 void nextFrame()
@@ -449,6 +456,17 @@ void nextFrame()
 	// may call save_game_state
 	do {
 		u32 input = ~kcode[localPlayerNum];
+		if (settings.platform.system != DC_PLATFORM_NAOMI)
+		{
+			if (rt[localPlayerNum] >= 64)
+				input |= EMU_BTN_TRIGGER_RIGHT;
+			else
+				input &= ~EMU_BTN_TRIGGER_RIGHT;
+			if (lt[localPlayerNum] >= 64)
+				input |= EMU_BTN_TRIGGER_LEFT;
+			else
+				input &= ~EMU_BTN_TRIGGER_LEFT;
+		}
 		GGPOErrorCode result = ggpo_add_local_input(ggpoSession, localPlayer, &input, sizeof(input));
 		if (result == GGPO_OK)
 			break;