medfall

commit 19a9bfa46900630e998bb5d8fa82a6e2a3fa2077
parent 27bcb570f0918d4c6fc0595ea246a285f4c58db7
Author: Michael Savage <mikejsavage@gmail.com>
Date:   Wed Sep 14 16:55:46 +0100

Add array.h

Diffstat:
array.h
 | 
78
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
1 file changed, 78 insertions(+), 0 deletions(-)
diff --git a/array.h b/array.h
@@ -0,0 +1,78 @@
+#ifndef _ARRAY_H_
+#define _ARRAY_H_
+
+#include "intrinsics.h"
+
+template< typename T >
+class array {
+public:
+	array( T * memory, size_t size ) : n( size ) {
+		elems = memory;
+	}
+
+	T & operator[]( size_t i ) {
+		assert( i < n );
+		return elems[ i ];
+	}
+
+	const T & operator[]( size_t i ) const {
+		assert( i < n );
+		return elems[ i ];
+	}
+
+	T * operator+( size_t i ) {
+		assert( i < n );
+		return &elems[ i ];
+	}
+
+	const T * operator+( size_t i ) const {
+		assert( i < n );
+		return &elems[ i ];
+	}
+
+	bool in_range( size_t i ) const {
+		return i < n;
+	}
+
+	const T * ptr() const {
+		return elems;
+	}
+
+	const size_t n;
+
+private:
+	T * elems;
+};
+
+template< typename T >
+class array2d {
+public:
+	array2d( T * memory, size_t width, size_t height ) : w( width ), h( height ) {
+		elems = memory;
+	}
+
+	T & operator()( size_t x, size_t y ) {
+		assert( in_range( x, y ) );
+		return elems[ y * w + x ];
+	}
+
+	const T & operator()( size_t x, size_t y ) const {
+		assert( in_range( x, y ) );
+		return elems[ y * w + x ];
+	}
+
+	bool in_range( size_t x, size_t y ) const {
+		return x < w && y < h;
+	}
+
+	const T * ptr() const {
+		return elems;
+	}
+
+	const size_t w, h;
+
+private:
+	T * elems;
+};
+
+#endif // _ARRAY_H_