1 files changed, 99 insertions, 0 deletions
diff --git a/rps_game/src/rps.cpp b/rps_game/src/rps.cpp
new file mode 100644
index 0000000..7fb9c19
--- /dev/null
+++ b/rps_game/src/rps.cpp
@@ -0,0 +1,99 @@
+#include "rps.h"
+
+namespace RPS {
+	OBJECT what_it_beats(OBJECT obj) {
+		switch (obj) {
+			case ROCK:
+				return ROCK_BEATS;
+			case PAPER:
+				return PAPER_BEATS;
+			case SCISSORS:
+				return SCISSORS_BEATS;
+			default:
+				return NONE;
+		}
+	}
+
+	OBJECT what_beats_it(OBJECT obj) {
+		switch (obj) {
+			case ROCK:
+				return BEATS_ROCK;
+			case PAPER:
+				return BEATS_PAPER;
+			case SCISSORS:
+				return BEATS_SCISSORS;
+			default:
+				return NONE;
+		}
+	}
+
+	OBJECT who_won(OBJECT a, OBJECT b) {
+		// Check for weird stuff.
+		if (!is_game_object(a) || !is_game_object(b))
+			return NONE;
+		if (a == b)
+			return DUAL;
+
+		return (what_it_beats(a) == b) ? a : b;
+	}
+	
+	OBJECT who_won(RPSLog log) {
+		return who_won(log.p1_choice, log.p2_choice);
+	}
+
+	bool is_game_object(OBJECT obj) {
+		return obj == ROCK || obj == PAPER || obj == SCISSORS;
+	}
+
+	int obj_to_string(OBJECT obj, char * buf, size_t n) {
+		int res;
+
+		// Check for stuff.
+		if (n <= 0 || buf == NULL)
+			return -1;
+
+		memset(buf, 0, n);
+
+		switch (obj) {
+			case ROCK:
+				strncat(buf, "rock", n);
+				break;
+			case PAPER:
+				strncat(buf, "paper", n);
+				break;
+			case SCISSORS:
+				strncat(buf, "scissors", n);
+				break;
+			case DUAL:
+				strncat(buf, "dual", n);
+				break;
+			default:
+				strncat(buf, "none", n);
+				break;
+		}
+
+		return 0;
+	}
+
+	int update_rps_stat(RPSStats * stats, OBJECT new_obj) {
+		// Check stuff.
+		if (stats == NULL)
+			return -1;
+
+		switch (new_obj) {
+			case ROCK:
+				stats->rock_count++;
+				break;
+			case PAPER:
+				stats->paper_count++;
+				break;
+			case SCISSORS:
+				stats->scissors_count++;
+				break;
+			default:
+				return -1;
+		}
+
+		return 0;
+	}
+}