From be830d28d72235a713ab432ab170c77a94e2124d Mon Sep 17 00:00:00 2001
From: walkawayy <81546780+walkawayy@users.noreply.github.com>
Date: Tue, 11 Jan 2022 13:35:44 -0500
Subject: [PATCH] input: allow holding down forward/back to move through saves

Resolves #171.
---
 src/game/input.c | 22 ++++++++++++++++++++++
 1 file changed, 22 insertions(+)

diff --git a/src/game/input.c b/src/game/input.c
index cd5e74221..3b397a5ed 100644
--- a/src/game/input.c
+++ b/src/game/input.c
@@ -2,16 +2,38 @@
 
 #include "specific/s_input.h"
 
+#define DELAY_FRAMES 12
+#define HOLD_FRAMES 3
+
 INPUT_STATE g_Input = { 0 };
 INPUT_STATE g_InputDB = { 0 };
 INPUT_STATE g_OldInputDB = { 0 };
 
+static int32_t m_HoldBack = 0;
+static int32_t m_HoldForward = 0;
+
 static INPUT_STATE Input_GetDebounced(INPUT_STATE input);
 
 INPUT_STATE Input_GetDebounced(INPUT_STATE input)
 {
     INPUT_STATE result;
     result.any = input.any & ~g_OldInputDB.any;
+
+    // Allow holding down key to move faster
+    if (input.forward || !input.back) {
+        m_HoldBack = 0;
+    } else if (input.back && ++m_HoldBack >= DELAY_FRAMES + HOLD_FRAMES) {
+        result.back = 1;
+        m_HoldBack = DELAY_FRAMES;
+    }
+
+    if (!input.forward || input.back) {
+        m_HoldForward = 0;
+    } else if (input.forward && ++m_HoldForward >= DELAY_FRAMES + HOLD_FRAMES) {
+        result.forward = 1;
+        m_HoldForward = DELAY_FRAMES;
+    }
+
     g_OldInputDB = input;
     return result;
 }