Added anamorphic 16:9 widescreen support because why the heck not?

display.c

@@ -57,7 +57,7 @@ void display_init()
 
 	// Start the display in progressive mode
 	int screenHeight;
-	display_reset(GetVideoMode(), 0, &screenHeight);
+	display_reset(GetVideoMode(), 0, 0, &screenHeight);
 	
 	// Clear double buffer counter
 	db = 0;
@@ -73,7 +73,7 @@ void display_init()
 	FntOpen(0, 16, SCREENWIDTH, screenHeight, 0, 512);
 }
 
-void display_reset(int mode, u_char interlaced, int *outScreenHeight)
+void display_reset(int mode, u_char interlaced, u_char widescreen, int *outScreenHeight)
 {
 	if (mode != GetVideoMode())
 		SetVideoMode(mode);
@@ -125,6 +125,9 @@ void display_reset(int mode, u_char interlaced, int *outScreenHeight)
 		disp[0].isinter = disp[1].isinter = 0;
 	}
 
+	// Scale X coordinates to set the aspect ratio for 4:3 or 16:9 widescreen
+	aspect_scale.vx = SCREENWIDTH * ONE / (widescreen ? 426 : 320);
+
 	disp[0].screen.y = disp[1].screen.y = yOffset;
 	disp[0].screen.h = disp[1].screen.h = screenHeight;
 

display.h

@@ -13,7 +13,7 @@ extern u_long *curOT;
 extern u_short polyCount;
 
 void display_init();
-void display_reset(int mode, u_char interlaced, int *outScreenHeight);
+void display_reset(int mode, u_char interlaced, u_char widescreen, int *outScreenHeight);
 void display_start();
 void display_finish();
 

input.c

@@ -13,6 +13,8 @@ static const char deadZone = 0x30;
 
 static u_char dispmode = 0;
 static u_char dispmode_held = 0;
+static u_char widescreen = 0;
+static u_char widescreen_held = 0;
 
 void input_init()
 {
@@ -107,14 +109,27 @@ void input_process()
         {
             dispmode_held = 1;
             //dispmode = (dispmode + 1) & 0x3;
-            //display_reset(!!(dispmode & 2), !!(dispmode & 1), NULL);
-            display_reset(!GetVideoMode(), 0, NULL);
+            //display_reset(!!(dispmode & 2), !!(dispmode & 1), widescreen, NULL);
+            display_reset(!GetVideoMode(), 0, widescreen, NULL);
         }
     }
     else
     {
         dispmode_held = 0;
     }
+    if (!(buttons & PAD_START))
+    {
+        if (!widescreen_held)
+        {
+            widescreen_held = 1;
+            widescreen = !widescreen;
+            display_reset(GetVideoMode(), 0, widescreen, NULL);
+        }
+    }
+    else
+    {
+        widescreen_held = 0;
+    }
 	
 	// Check for analog controller
 	u_char padType = padBuffer[0][1] >> 4;