Initial source commit

minorGems/graphics/getKey.h

@@ -0,0 +1,71 @@
+// Jason Rohrer
+// getKey.h
+
+/**
+*
+*	general interface for getting current key depressed
+*	Implemented by a graphix framework on a particular platform
+*
+*
+*	Created 12-15-99
+*	Mods:	
+*
+*/
+
+
+// returns true if key represented by given key code is down
+char getKeyDown( int vKeyCode );
+
+// returns true if key is up
+char getKeyUp( int vKeyCode );	
+
+
+
+
+
+/**
+
+
+	Sample PC implementation
+
+#include <windows.h>
+
+getKeyDown( int vKeyCode ) { 
+	return ((GetAsyncKeyState(vKeyCode) & 0x8000) ? true : false);
+	}
+getKeyUp( int vKeyCode ) {
+	return ((GetAsyncKeyState(vKeyCode) & 0x8000) ? false : true);
+	}
+
+
+
+Sample Mac implementation
+
+
+#include <Events.h>
+
+getKeyDown( int vKeyCode ) { 
+	KeyMapByteArray keyArray;
+	GetKeys( keyArray );
+	
+	int arrayInd = vKeyCode >> 3;	// divide by 8 to get start array index of key code
+	
+	unsigned char neededByte = keyArray[ arrayInd ];
+	
+	return (neededByte >> vKeyCode % 8) && 0x01;		// trim off bit needed
+	}
+	
+getKeyUp( int vKeyCode ) {
+	KeyMapByteArray keyArray;
+	GetKeys( keyArray );
+	
+	int arrayInd = vKeyCode >> 3;	// divide by 8 to get start array index of key code
+	
+	unsigned char neededByte = keyArray[ arrayInd ];
+	
+	return !((neededByte >> vKeyCode % 8) && 0x01);		// trim off bit needed, and invert
+	}
+	
+	
+	
+*/