1 files changed, 104 insertions, 0 deletions
diff --git a/2048.c b/2048.c
new file mode 100644
index 0000000..ce73844
--- /dev/null
+++ b/2048.c
@@ -0,0 +1,104 @@
+#include "buttons.h"
+#include "dogs.h"
+
+static int values[16];
+
+void g2048_init()
+{
+    for (int i = 0; i < 16; i++)
+        values[i] = 0;
+}
+
+int g2048_loop()
+{
+    if ((button_state & BUTTON_JOYUP) == BUTTON_JOYUP) {
+        for (int x = 0; x < 3; x++) {
+            for (int y = 0; y < 3; y++) {
+
+                if (values[4 * y + x] != 0)
+                    continue;
+            }
+        }
+
+        for (int y = 3; y > 0; y--) {
+            for (int x = 0; x < 4; x++) {
+                if (values[4 * y + x] != 0) {
+                    if (values[4 * (y - 1) + x] == 0)
+                        values[4 * (y - 1) + x] = values[4 * y + x], values[4 * y + x] = 0;
+                    else if (values[4 * (y - 1) + x] == values[4 * y + x])
+                        values[4 * (y - 1) + x]++, values[4 * y + x] = 0;
+                }
+            }
+        }
+
+        for (int i = 15; i >= 0; i--) {
+            if (values[i] == 0) {
+                values[i] = 1;
+                break;
+            }
+        }
+    } else if ((button_state & BUTTON_JOYDOWN) == BUTTON_JOYDOWN) {
+        for (int y = 0; y < 3; y++) {
+            for (int x = 0; x < 4; x++) {
+                if (values[4 * y + x] != 0) {
+                    if (values[4 * (y + 1) + x] == 0)
+                        values[4 * (y + 1) + x] = values[4 * y + x], values[4 * y + x] = 0;
+                    else if (values[4 * (y + 1) + x] == values[4 * y + x])
+                        values[4 * (y + 1) + x]++, values[4 * y + x] = 0;
+                }
+            }
+        }
+
+        for (int i = 15; i >= 0; i--) {
+            if (values[i] == 0) {
+                values[i] = 1;
+                break;
+            }
+        }
+    } else if ((button_state & BUTTON_JOYLEFT) == BUTTON_JOYLEFT) {
+        for (int x = 3; x > 0; x--) {
+            for (int y = 0; y < 4; y++) {
+                if (values[4 * y + x] != 0) {
+                    if (values[4 * y + x - 1] == 0)
+                        values[4 * y + x - 1] = values[4 * y + x], values[4 * y + x] = 0;
+                    else if (values[4 * y + x - 1] == values[4 * y + x])
+                        values[4 * y + x - 1]++, values[4 * y + x] = 0;
+                }
+            }
+        }
+
+        for (int i = 15; i >= 0; i--) {
+            if (values[i] == 0) {
+                values[i] = 1;
+                break;
+            }
+        }
+    } else if ((button_state & BUTTON_JOYRIGHT) == BUTTON_JOYRIGHT) {
+        for (int x = 0; x < 3; x++) {
+            for (int y = 0; y < 4; y++) {
+                if (values[4 * y + x] != 0) {
+                    if (values[4 * y + x + 1] == 0)
+                        values[4 * y + x + 1] = values[4 * y + x], values[4 * y + x] = 0;
+                    else if (values[4 * y + x + 1] == values[4 * y + x])
+                        values[4 * y + x + 1]++, values[4 * y + x] = 0;
+                }
+            }
+        }
+
+        for (int i = 15; i >= 0; i--) {
+            if (values[i] == 0) {
+                values[i] = 1;
+                break;
+            }
+        }
+    }
+
+    dogs_clear();
+    for (int i = 0; i < 16; i++) {
+        if (values[i] != 0)
+            draw_number(31 + 10 * (i % 4), 12 + 10 * (3 - (i / 4)), values[i]);
+    }
+    dogs_flush();
+
+    return 500;
+}