Forgot to add the actual animation code o_O

animations/ltn_ant.c

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+/*Copyright (c) 2010 Jan Lieven
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to
+ * deal in the Software without restriction, including without limitation the
+ * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
+ * sell copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
+ * IN THE SOFTWARE.
+ */
+
+
+#include "../config.h"
+#include "../pixel.h"
+#include "../util.h"
+#include "../random/prng.h"
+
+void ltn_ant() {
+	clear_screen(0);
+
+	struct {
+		char x, y;
+		char dx, dy; /* Vector can only be: (0,1),(1,0),(0,-1),(-1,0) */
+	} ant; 
+		                    
+	int temp;
+
+	/* Random startposition and direction */
+	ant.x  = random8() % NUM_COLS;
+	ant.y  = random8() % NUM_ROWS;
+
+	/* Make sure we do have a valid vector */	
+	do {	
+		ant.dx = random8() % 2;
+		ant.dy = random8() % 2;
+		/* We need negative directions, too */
+		if(ant.dx == 2)
+			ant.dx = -1;
+		if(ant.dy == 2)
+			ant.dy = -1;
+	} while(ant.dx == ant.dy);
+
+	do { 
+		if(get_pixel((pixel) {ant.x, ant.y}) == 0) { /* If the pixel is not set turn it on */
+			setpixel((pixel) {ant.x, ant.y}, 3);
+			temp = ant.dx;
+			ant.dx = ant.dy;
+			ant.dy = -temp; /* Turn 90 degrees to the right */
+		} else {
+			setpixel((pixel) {ant.x, ant.y}, 0);
+			temp = ant.dy;
+			ant.dy = ant.dx;
+			ant.dx = -temp; /* Turn 90 degrees to the left */
+		}
+		wait(100);
+									              
+		ant.x = ant.x + ant.dx;
+		ant.y = ant.y + ant.dy;
+											            
+
+	} while (ant.x >= 0 && ant.x < NUM_COLS && ant.y >= 0 && ant.y < NUM_ROWS); /* Make sure we won't leave the matrix
+										     * (Mr. Smith hates it outside the matrix, you know?)
+										     */       
+
+}

animations/ltn_ant.h

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+void ltn_ant();