Added commandline parameters.

mapper.cpp

@@ -7,7 +7,57 @@
  * =====================================================================
  */
 
+#include <getopt.h>
+#include <cstdlib>
+#include <iostream>
+
+using namespace std;
+
+void usage()
+{
+	 const char *usage_text = "minetestmapper.py [options]\n\
+  -i/--input <world_path>\n\
+  -o/--output <output_image.png>\n\
+  --bgcolor <color>\n\
+  --scalecolor <color>\n\
+  --playercolor <color>\n\
+  --origincolor <color>\n\
+  --drawscale\n\
+  --drawplayers\n\
+  --draworigin\n\
+  --drawunderground\n\
+Color format: '#000000'\n";
+	std::cout << usage_text;
+}
+
 int main(int argc, char *argv[])
 {
-	return 0;
+	static struct option long_options[] =
+	{
+		{"help", no_argument, 0, 'h'},
+		{"input", required_argument, 0, 'i'},
+		{"output", required_argument, 0, 'o'},
+		{"bgcolor", required_argument, 0, 'b'},
+		{"scalecolor", required_argument, 0, 's'},
+		{"origincolor", required_argument, 0, 'r'},
+		{"playercolor", required_argument, 0, 'p'},
+		{"draworigin", no_argument, 0, 'w'},
+		{"drawplayers", no_argument, 0, 'l'},
+		{"drawscale", no_argument, 0, 'c'},
+		{"drawunderground", no_argument, 0, 'u'}
+	};
+	int option_index = 0;
+	int c = getopt_long(argc, argv, "hi:o:", long_options, &option_index);
+	if (c == -1) {
+		usage();
+		exit(-1);
+	}
+	std::cout << c << std::endl;
+	while (1) {
+		c = getopt_long(argc, argv, "hi:o:", long_options, &option_index);
+		if (c == -1) {
+			break;
+		}
+		std::cout << c << std::endl;
+	}
 }