Windows CE port addition

sys/wince/mhinput.c

@@ -0,0 +1,85 @@
+/* Copyright (C) 2001 by Alex Kompel <shurikk@pacbell.net> */
+/* NetHack may be freely redistributed.  See license for details. */
+
+#include <assert.h>
+#include "winMS.h"
+#include "mhinput.h"
+
+/* nethack input queue functions */
+
+#define NH_INPUT_BUFFER_SIZE  64
+
+/* as it stands right now we need only one slot 
+   since events are processed almost the same time as
+   they occur but I like large round numbers */
+
+static MSNHEvent nhi_input_buffer[NH_INPUT_BUFFER_SIZE];
+static int nhi_init_input = 0;
+static int nhi_read_pos = 0;
+static int nhi_write_pos = 0;
+
+/* initialize input queue */
+void mswin_nh_input_init() 
+{
+	if( !nhi_init_input ) {
+		nhi_init_input = 1;
+
+		ZeroMemory( nhi_input_buffer, sizeof(nhi_input_buffer) );
+		nhi_read_pos = 0;
+		nhi_write_pos = 0;
+	}
+}
+
+/* check for input */
+int	mswin_have_input()
+{
+	return (nhi_read_pos!=nhi_write_pos);
+}
+
+/* add event to the queue */
+void mswin_input_push(PMSNHEvent event)
+{
+	int new_write_pos;
+
+	if( !nhi_init_input ) mswin_nh_input_init();
+
+	new_write_pos = (nhi_write_pos+1) % NH_INPUT_BUFFER_SIZE;
+	
+	if(new_write_pos!=nhi_read_pos) {
+		memcpy(nhi_input_buffer+nhi_write_pos, event, sizeof(*event));
+		nhi_write_pos = new_write_pos;
+	}
+
+}
+
+/* get event from the queue and delete it */
+PMSNHEvent mswin_input_pop()
+{
+	PMSNHEvent retval;
+
+	if( !nhi_init_input ) mswin_nh_input_init();
+
+	if( nhi_read_pos!=nhi_write_pos ) {
+		retval = &nhi_input_buffer[nhi_read_pos];
+		nhi_read_pos = (nhi_read_pos+1) % NH_INPUT_BUFFER_SIZE;
+	} else {
+		retval = NULL;
+	}
+
+	return retval;
+}
+
+/* get event from the queue but leave it there */
+PMSNHEvent mswin_input_peek()
+{
+	PMSNHEvent retval;
+
+	if( !nhi_init_input ) mswin_nh_input_init();
+
+	if( nhi_read_pos!=nhi_write_pos ) {
+		retval = &nhi_input_buffer[nhi_read_pos];
+	} else {
+		retval = NULL;
+	}
+	return retval;
+}