From eed7c27708d10e86427fe4902aaabcd74c8b2b46 Mon Sep 17 00:00:00 2001
From: ozkl <ozkl@users.noreply.github.com>
Date: Fri, 10 Mar 2023 19:29:47 +0300
Subject: [PATCH] main() from outside

---
 doomgeneric/d_main.c      | 40 +++++++++++++++++++++------------------
 doomgeneric/dgmain.c      | 18 ++++++++++++++++++
 doomgeneric/doomgeneric.c | 17 ++++++++++++++++-
 doomgeneric/doomgeneric.h |  4 ++++
 doomgeneric/i_main.c      |  7 ++-----
 5 files changed, 62 insertions(+), 24 deletions(-)
 create mode 100644 doomgeneric/dgmain.c

diff --git a/doomgeneric/d_main.c b/doomgeneric/d_main.c
index c7cf977..9012e5f 100644
--- a/doomgeneric/d_main.c
+++ b/doomgeneric/d_main.c
@@ -402,6 +402,22 @@ boolean D_GrabMouseCallback(void)
     return (gamestate == GS_LEVEL) && !demoplayback && !advancedemo;
 }
 
+void doomgeneric_Tick()
+{
+    // frame syncronous IO operations
+    I_StartFrame ();
+
+    TryRunTics (); // will run at least one tic
+
+    S_UpdateSounds (players[consoleplayer].mo);// move positional sounds
+
+    // Update display, next frame, with current state.
+    if (screenvisible)
+    {
+        D_Display ();
+    }
+}
+
 //
 //  D_DoomLoop
 //
@@ -439,21 +455,7 @@ void D_DoomLoop (void)
         wipegamestate = gamestate;
     }
 
-    while (1)
-    {
-		// frame syncronous IO operations
-		I_StartFrame ();
-
-		TryRunTics (); // will run at least one tic
-
-		S_UpdateSounds (players[consoleplayer].mo);// move positional sounds
-
-		// Update display, next frame, with current state.
-		if (screenvisible)
-		{
-			D_Display ();
-		}
-    }
+    doomgeneric_Tick();
 }
 
 
@@ -1812,14 +1814,16 @@ void D_DoomMain (void)
     {
 		singledemo = true;              // quit after one demo
 		G_DeferedPlayDemo (demolumpname);
-		D_DoomLoop ();  // never returns
+		D_DoomLoop ();
+        return;
     }
 
     p = M_CheckParmWithArgs("-timedemo", 1);
     if (p)
     {
 		G_TimeDemo (demolumpname);
-		D_DoomLoop ();  // never returns
+		D_DoomLoop ();
+        return;
     }
 
     if (startloadgame >= 0)
@@ -1836,6 +1840,6 @@ void D_DoomMain (void)
 			D_StartTitle ();                // start up intro loop
     }
 
-    D_DoomLoop ();  // never returns
+    D_DoomLoop ();
 }
 
diff --git a/doomgeneric/dgmain.c b/doomgeneric/dgmain.c
new file mode 100644
index 0000000..8f4283c
--- /dev/null
+++ b/doomgeneric/dgmain.c
@@ -0,0 +1,18 @@
+#include <stdio.h>
+
+
+#include "doomgeneric.h"
+
+
+int main(int argc, char **argv)
+{
+    doomgeneric_Create(argc, argv);
+
+    for (int i = 0; ; i++)
+    {
+        doomgeneric_Tick();
+    }
+    
+
+    return 0;
+}
\ No newline at end of file
diff --git a/doomgeneric/doomgeneric.c b/doomgeneric/doomgeneric.c
index 25675ab..782a7e7 100644
--- a/doomgeneric/doomgeneric.c
+++ b/doomgeneric/doomgeneric.c
@@ -1,12 +1,27 @@
+#include <stdio.h>
+
+#include "m_argv.h"
+
 #include "doomgeneric.h"
 
 uint32_t* DG_ScreenBuffer = 0;
 
+void M_FindResponseFile(void);
+void D_DoomMain (void);
 
-void dg_Create()
+
+void doomgeneric_Create(int argc, char **argv)
 {
+	// save arguments
+    myargc = argc;
+    myargv = argv;
+
+	M_FindResponseFile();
+
 	DG_ScreenBuffer = malloc(DOOMGENERIC_RESX * DOOMGENERIC_RESY * 4);
 
 	DG_Init();
+
+	D_DoomMain ();
 }
 
diff --git a/doomgeneric/doomgeneric.h b/doomgeneric/doomgeneric.h
index c2dc4b5..091621f 100644
--- a/doomgeneric/doomgeneric.h
+++ b/doomgeneric/doomgeneric.h
@@ -10,7 +10,11 @@
 
 extern uint32_t* DG_ScreenBuffer;
 
+void doomgeneric_Create(int argc, char **argv);
+void doomgeneric_Tick();
 
+
+//Implement below functions for your platform
 void DG_Init();
 void DG_DrawFrame();
 void DG_SleepMs(uint32_t ms);
diff --git a/doomgeneric/i_main.c b/doomgeneric/i_main.c
index b192227..80a8117 100644
--- a/doomgeneric/i_main.c
+++ b/doomgeneric/i_main.c
@@ -34,9 +34,7 @@ void D_DoomMain (void);
 
 void M_FindResponseFile(void);
 
-void dg_Create();
-
-
+/*
 int main(int argc, char **argv)
 {
     // save arguments
@@ -48,11 +46,10 @@ int main(int argc, char **argv)
 
     // start doom
     printf("Starting D_DoomMain\r\n");
-    
-	dg_Create();
 
 	D_DoomMain ();
 
     return 0;
 }
 
+*/
\ No newline at end of file