1 files changed, 121 insertions, 0 deletions
diff --git a/keyboards/nullbitsco/snap/keymaps/bongo_reactive_single_oled/bongo.h b/keyboards/nullbitsco/snap/keymaps/bongo_reactive_single_oled/bongo.h
new file mode 100644
index 0000000000..0cf1de3045
--- /dev/null
+++ b/keyboards/nullbitsco/snap/keymaps/bongo_reactive_single_oled/bongo.h
@@ -0,0 +1,121 @@
+/* Copyright 2021 Chris Tanaka <https://github.com/christanaka>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include "bongo_graphics.h"
+#include QMK_KEYBOARD_H
+
+#define _IDLE_FRAMES         5
+#define _PREP_FRAMES         1
+#define _TAP_FRAMES          2
+#define _ANIM_BYTES          512   // Number of bytes in array (max is 1024)
+#define _IDLE_FRAME_DURATION 175
+#define _TAP_FRAME_DURATION  75
+#define _PREP_TIMEOUT        750
+
+enum anim_states
+{
+    Idle,
+    Prep,
+    Tap
+};
+
+static uint8_t anim_state = Idle;
+static uint8_t anim_duration = _IDLE_FRAME_DURATION;
+static uint32_t anim_timer = 0;
+
+static uint8_t idle_frame = 0;
+static uint8_t tap_frame = 0;
+
+static uint32_t prep_timer = 0;
+
+// Decompress and write a precompressed bitmap frame to the OLED.
+// Documentation and python compression script available at:
+// https://github.com/nullbitsco/squeez-o
+#ifdef USE_OLED_BITMAP_COMPRESSION
+static void oled_write_compressed_P(const char* input_block_map, const char* input_block_list) {
+    uint16_t block_index = 0;
+    for (uint16_t i = 0; i < NUM_OLED_BYTES; i++) {
+        uint8_t bit          = i % 8;
+        uint8_t map_index    = i / 8;
+        uint8_t _block_map   = (uint8_t)pgm_read_byte_near(input_block_map + map_index);
+        uint8_t nonzero_byte = (_block_map & (1 << bit));
+        if (nonzero_byte) {
+            const char data = (const char)pgm_read_byte_near(input_block_list + block_index++);
+            oled_write_raw_byte(data, i);
+        } else {
+            const char data = (const char)0x00;
+            oled_write_raw_byte(data, i);
+        }
+    }
+}
+#endif
+
+static void animate(uint8_t x, uint8_t y) {
+  oled_set_cursor(x, y);
+
+  // Update frame
+  switch (anim_state) {
+    case Idle:
+      idle_frame = (idle_frame + 1) % _IDLE_FRAMES;
+      #ifdef USE_OLED_BITMAP_COMPRESSION
+          oled_write_compressed_P(idle_block_map[abs(1 - idle_frame)], idle[abs(1 - idle_frame)]);
+      #else
+          oled_write_raw_P(idle[abs(1 - idle_frame)], sizeof(idle[abs(1 - idle_frame)]));
+      #endif
+      break;
+    case Prep:
+      #ifdef USE_OLED_BITMAP_COMPRESSION
+          oled_write_compressed_P(prep_block_map[0], prep[0]);
+      #else
+          oled_write_raw_P(prep[0], sizeof(prep[0]));
+      #endif
+      break;
+    case Tap:
+      tap_frame = (tap_frame + 1) % _TAP_FRAMES;
+      #ifdef USE_OLED_BITMAP_COMPRESSION
+          oled_write_compressed_P(tap_block_map[abs(1 - tap_frame)], tap[abs(1 - tap_frame)]);
+      #else
+          oled_write_raw_P(tap[abs(1 - tap_frame)], sizeof(tap[abs(1 - tap_frame)]));
+      #endif
+      break;
+    default:
+      break;
+  }
+}
+
+void bongo_render(uint8_t x, uint8_t y) {
+  if (timer_elapsed32(anim_timer) > anim_duration) {
+    anim_timer = timer_read32();
+    animate(x, y);
+  }
+
+  if (anim_state == Prep && timer_elapsed32(prep_timer) > _PREP_TIMEOUT) {
+    anim_state = Idle;
+    anim_duration = _IDLE_FRAME_DURATION;
+  }
+}
+
+void bongo_process_record(keyrecord_t *record) {
+  if (record->event.pressed) {
+    anim_state = Tap;
+    anim_duration = _TAP_FRAME_DURATION;
+  } else {
+    if (anim_state == Tap) {
+      anim_state = Prep;
+      prep_timer = timer_read32();
+    }
+  }
+}