From 37236919c76ed4b5a8a7c98950257e3626e268c4 Mon Sep 17 00:00:00 2001
From: Ian C <ianc@noddybox.co.uk>
Date: Mon, 9 Aug 2021 18:50:11 +0000
Subject: Changed initial directory and added joystick emulation.

---
 include/gui.h |  1 +
 source/gui.c  | 20 ++++++++++++---
 source/main.c |  1 +
 source/spec.c | 80 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++--
 4 files changed, 96 insertions(+), 6 deletions(-)

diff --git a/include/gui.h b/include/gui.h
index 027e2b6..392571b 100644
--- a/include/gui.h
+++ b/include/gui.h
@@ -23,6 +23,7 @@
 
 #include <stdio.h>
 
+void    GUI_Init(void);
 int	GUI_Menu(const char *opts[]);
 void	GUI_Alert(int fatal, const char *text);
 void	GUI_Config(void);
diff --git a/source/gui.c b/source/gui.c
index 375fc74..c3b402d 100644
--- a/source/gui.c
+++ b/source/gui.c
@@ -54,12 +54,11 @@ typedef struct
 {
     char	name[FSEL_FILENAME_LEN+1];
     int		is_dir;
-    int		size;
 } FSEL_File;
 
 static FSEL_File fsel[FSEL_MAX_FILES];
 
-char last_dir[FILENAME_MAX] = "sdmc:/";
+char last_dir[FILENAME_MAX] = "sdmc:/SPECTRUM/";
 
 
 static void CheckPath(char *path)
@@ -185,7 +184,6 @@ static int LoadDir(const char *path, const char *filter)
         {
             strcpy(fsel[no].name, "..");
             fsel[no].is_dir = TRUE;
-            fsel[no].size = 0;
             no++;
         }
 
@@ -199,7 +197,6 @@ static int LoadDir(const char *path, const char *filter)
 	    {
 		strcpy(fsel[no].name,ent->d_name);
 		fsel[no].is_dir = ent->d_type & DT_DIR;
-		fsel[no].size = 0;
 		no++;
 	    }
 	}
@@ -215,6 +212,21 @@ static int LoadDir(const char *path, const char *filter)
 
 /* ---------------------------------------- PUBLIC INTERFACES
 */
+void GUI_Init(void)
+{
+    DIR *dir;
+
+    if ((dir = opendir(last_dir)))
+    {
+        closedir(dir);
+    }
+    else
+    {
+        strcpy(last_dir, "sdmc:/");
+    }
+}
+
+
 int GUI_Menu(const char *opts[])
 {
     int x,y;
diff --git a/source/main.c b/source/main.c
index d78a910..36f3791 100644
--- a/source/main.c
+++ b/source/main.c
@@ -247,6 +247,7 @@ int main(int argc, char *argv[])
     ndspChnSetMix(0, mix);
 
     FB_Init();
+    GUI_Init();
 
     z80 = Z80Init(SPECReadPort, SPECWritePort);
 
diff --git a/source/spec.c b/source/spec.c
index 1a5eba2..0dc753f 100644
--- a/source/spec.c
+++ b/source/spec.c
@@ -134,9 +134,16 @@ static struct
 };
 
 
-/* The keyboard
+/* The keyboard and joystick
 */
 static Z80Byte		matrix[8];
+static Z80Byte          joystick;
+
+#define JOY_FIRE        0x10
+#define JOY_UP          0x08
+#define JOY_DOWN        0x04
+#define JOY_LEFT        0x02
+#define JOY_RIGHT       0x01
 
 static struct
 {
@@ -424,7 +431,66 @@ void SPECHandleKey(SoftKey key, int is_pressed)
     }
     else
     {
-    	/* TODO: Joysticks?  */
+    	switch(key)
+        {
+            case SK_PAD_UP:
+                if (is_pressed)
+                {
+                    joystick = joystick | JOY_UP;
+                }
+                else
+                {
+                    joystick = joystick & ~JOY_UP;
+                }
+                break;
+
+            case SK_PAD_DOWN:
+                if (is_pressed)
+                {
+                    joystick = joystick | JOY_DOWN;
+                }
+                else
+                {
+                    joystick = joystick & ~JOY_DOWN;
+                }
+                break;
+
+            case SK_PAD_LEFT:
+                if (is_pressed)
+                {
+                    joystick = joystick | JOY_LEFT;
+                }
+                else
+                {
+                    joystick = joystick & ~JOY_LEFT;
+                }
+                break;
+
+            case SK_PAD_RIGHT:
+                if (is_pressed)
+                {
+                    joystick = joystick | JOY_RIGHT;
+                }
+                else
+                {
+                    joystick = joystick & ~JOY_RIGHT;
+                }
+                break;
+
+            case SK_PAD_A:
+                if (is_pressed)
+                {
+                    joystick = joystick | JOY_FIRE;
+                }
+                else
+                {
+                    joystick = joystick & ~JOY_FIRE;
+                }
+                break;
+
+            default:
+                break;
+        }
     }
 }
 
@@ -448,9 +514,19 @@ Z80Byte SPECReadPort(Z80 *z80, Z80Word port)
     switch(lo)
     {
 	case 0x1f:	/* Kempston joystick */
+            b = joystick;
 	    break;
 
 	case 0x7f:	/* Fuller joystick */
+            b = ~joystick;
+            if (b & JOY_FIRE)
+            {
+                b |= 0x80;
+            }
+            else
+            {
+                b &= 0x7f;
+            }
 	    break;
 
 	case 0xfb:	/* ZX Printer */
-- 
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