Making another one, cleaning up some

examples/simple/CMakeLists.txt

@@ -0,0 +1,3 @@
+include_directories(${PROJECT_SOURCE_DIR}/include)
+add_executable(simple-client simple.c)
+target_link_libraries(simple-client discord-rpc)

examples/simple/simple.c

@@ -0,0 +1,89 @@
+/*
+    This is a simple example in C of using the rich presence API syncronously.
+*/
+
+#define _CRT_SECURE_NO_WARNINGS /* thanks Microsoft */
+
+#include <stdint.h>
+#include <stdio.h>
+#include <string.h>
+#include <time.h>
+
+#include "discord-rpc.h"
+
+static const char* APPLICATION_ID = "12345678910";
+static int FrustrationLevel = 0;
+
+static void updateDiscordPresence() {
+    char buffer[256];
+    DiscordRichPresence discordPresence;
+    memset(&discordPresence, 0, sizeof(discordPresence));
+    discordPresence.state = "West of House";
+    sprintf(buffer, "Frustration level: %d", FrustrationLevel);
+    discordPresence.details = buffer;
+    Discord_UpdatePresence(&discordPresence);
+}
+
+static void handleDiscordReady() {
+    printf("Discord: ready\n");
+}
+
+static void handleDiscordDisconnected() {
+    printf("Discord: disconnected\n");
+}
+
+static void handleDiscordWantsPresence() {
+    printf("Discord: requests presence\n");
+    updateDiscordPresence();
+}
+
+static int prompt(char* line, size_t size) {
+    int res;
+    char* nl;
+    printf("\n> ");
+    fflush(stdout);
+    res = fgets(line, size, stdin) ? 1 : 0;
+    line[size - 1] = 0;
+    nl = strchr(line, '\n');
+    if (nl) {
+        *nl = 0;
+    }
+    return res;
+}
+
+static void gameLoop() {
+    char line[512];
+    char* space;
+
+    printf("You are standing in an open field west of a white house.\n");
+    while (prompt(line, sizeof(line))) {
+        if (time(NULL) & 1) {
+            printf("I don't understand that.\n");
+        } else {
+            space = strchr(line, ' ');
+            if (space) {
+                *space = 0;
+            }
+            printf("I don't know the word \"%s\".\n", line);
+        }
+
+        ++FrustrationLevel;
+        
+        updateDiscordPresence();
+    }
+}
+
+int main() {
+    DiscordEventHandlers handlers;
+    memset(&handlers, 0, sizeof(handlers));
+    handlers.ready = handleDiscordReady;
+    handlers.disconnected = handleDiscordDisconnected;
+    handlers.wantsPresence = handleDiscordWantsPresence;
+    Discord_Initialize(APPLICATION_ID, &handlers);
+
+    gameLoop();
+    
+    Discord_Shutdown();
+    return 0;
+}
+