From a3b16f394aae46dfd18f5952f16803867bc1f400 Mon Sep 17 00:00:00 2001
From: Ian C <ianc@noddybox.co.uk>
Date: Fri, 15 Sep 2006 00:30:18 +0000
Subject: Works enough to run Manic Miner.  Slowly.

---
 source/spec.c | 90 ++++++++++++++++++++++++++++++++++++++++++++++++-----------
 1 file changed, 73 insertions(+), 17 deletions(-)

(limited to 'source/spec.c')

diff --git a/source/spec.c b/source/spec.c
index 7137834..10a5d0a 100644
--- a/source/spec.c
+++ b/source/spec.c
@@ -114,9 +114,49 @@ static struct
 */
 static Z80Byte		matrix[8];
 
+static struct
+{
+    int row;
+    int bit;
+} key_matrix[]=
+    {
+    	{3,0x01}, {3,0x02}, {3,0x04}, {3,0x08}, {3,0x10}, 	/* 1 - 5 */
+    	{4,0x10}, {4,0x08}, {4,0x04}, {4,0x02}, {4,0x01}, 	/* 6 - 0 */
+    	{2,0x01}, {2,0x02}, {2,0x04}, {2,0x08}, {2,0x10}, 	/* Q - T */
+    	{5,0x10}, {5,0x08}, {5,0x04}, {5,0x02}, {5,0x01}, 	/* Y - P */
+    	{1,0x01}, {1,0x02}, {1,0x04}, {1,0x08}, {1,0x10}, 	/* A - G */
+    	{6,0x10}, {6,0x08}, {6,0x04}, {6,0x02}, {6,0x01}, 	/* H - NL */
+    	{0,0x01}, {0,0x02}, {0,0x04}, {0,0x08}, {0,0x10}, 	/* CAPS - V */
+    	{7,0x10}, {7,0x08}, {7,0x04}, {7,0x02}, {7,0x01} 	/* B - SPACE */
+    };
+
+static int debug_matrix = FALSE;
+
 
 /* ---------------------------------------- PRIVATE FUNCTIONS
 */
+static void FillBox(int x, int y, int w, int h, int colour)
+{
+    int f;
+    uint16 *base;
+
+    colour|=0x8000;
+
+    base=vram+x+y*256;
+
+    while(h--)
+    {
+    	for(f=0;f<w;f++)
+	{
+	    *(base+f)=colour;
+	}
+
+	base+=256;
+    }
+}
+
+
+
 static void DrawScreen(void)
 {
     int f,r;
@@ -170,6 +210,31 @@ static void DrawScreen(void)
 	    }
 	}
     }
+
+    if (debug_matrix)
+    {
+    	int m;
+	int b;
+
+	for(m=0;m<8;m++)
+	{
+	    for(b=0;b<8;b++)
+	    {
+		uint16 col;
+
+	    	if (matrix[m]&(1<<b))
+		{
+		    col=RGB15(0,31,0);
+		}
+		else
+		{
+		    col=RGB15(31,0,0);
+		}
+
+	    	FillBox((7-b)*5,150+m*5,4,4,col);
+	    }
+	}
+    }
 }
 
 static void RomPatch(void)
@@ -314,34 +379,25 @@ void SPECInit(uint16 *v, Z80 *z80)
 
 void SPECHandleKey(SoftKey key, int is_pressed)
 {
-    if (key<=SK_SPACE)
+    if (key<SK_CONFIG)
     {
-    	int row;
-	int bit;
-
-	row=key/5;
-
-	if (row&1)
-	{
-	    bit=5-(key%5);
-	}
-	else
-	{
-	    bit=(key%5);
-	}
-
 	if (is_pressed)
 	{
-	    matrix[row]&=~bit;
+	    matrix[key_matrix[key].row]&=~key_matrix[key].bit;
 	}
 	else
 	{
-	    matrix[row]|=bit;
+	    matrix[key_matrix[key].row]|=key_matrix[key].bit;
 	}
     }
     else
     {
     	/* TODO: Joysticks! */
+
+	if (is_pressed && key==SK_PAD_SELECT)
+	{
+	    debug_matrix = !debug_matrix;
+	}
     }
 }
 
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