diff --git a/source/game/event.c b/source/game/event.c
new file mode 100644
index 0000000..c7cbd4a
--- /dev/null
+++ b/source/game/event.c
@@ -0,0 +1,45 @@
+#include <iso646.h>
+#include <stdbool.h>
+#include <stdint.h>
+#include <stdio.h>
+#include <stdlib.h>
+
+#include "fumotris.h"
+
+struct Delegate {
+    size_t len;
+    size_t capacity;
+    void (**events)(void *args);
+};
+
+inline size_t delegate_size(size_t capacity)
+{
+    return sizeof(void(*)(void *)) * capacity;
+}
+
+struct Delegate NewDelegate(size_t capacity)
+{
+    return (struct Delegate) {
+        .len = 0,
+        .capacity = capacity,
+        .events = malloc(delegate_size(capacity))
+    };
+}
+
+void Subscribe(struct Delegate *d, void (*event)(void *args))
+{
+    if (d->len == d->capacity) {
+        d->capacity *= 2;
+        d->events = realloc(d->events, delegate_size(d->capacity));
+    }
+
+    d->events[d->len] = event;
+    d->len += 1;
+}
+
+void Call(struct Delegate *d, void *args)
+{
+    for (size_t i = 0; i < d->len; i++) {
+        d->events[i](args);
+    }
+}
\ No newline at end of file
diff --git a/source/game/event.h b/source/game/event.h
new file mode 100644
index 0000000..ce7a4cd
--- /dev/null
+++ b/source/game/event.h
@@ -0,0 +1,20 @@
+#pragma once
+#include <iso646.h>
+#include <stdbool.h>
+#include <stdint.h>
+#include <stdio.h>
+#include <stdlib.h>
+
+#include "fumotris.h"
+
+struct Delegate {
+    size_t len;
+    size_t capacity;
+    void (**events)(void *args);
+};
+
+struct Delegate NewDelegate(size_t capacity);
+
+void Subscribe(struct Delegate *d, void (*event)(void *args));
+
+void Call(struct Delegate *d, void *args);
\ No newline at end of file
diff --git a/source/game/tetr.c b/source/game/tetr.c
index c774601..c579f0d 100644
--- a/source/game/tetr.c
+++ b/source/game/tetr.c
@@ -33,7 +33,7 @@ struct TetrMap NewTetrMap(u8 *blks, size_t wid, size_t hgt)
     };
 }
 
-void TetrMapToTermBuf(struct TetrMap *map, struct TermBuf *term)
+void TetrMapToTermBuf(struct TetrMap *map, struct Terminal *term)
 {
     static const u8f blk_colors[8] = { 8, 14, 11, 13, 10, 9, 12, 3 };
 
@@ -42,8 +42,8 @@ void TetrMapToTermBuf(struct TetrMap *map, struct TermBuf *term)
         size_t map_i = y * map->wid + x;
         size_t buf_i = (y + map->y) * term->wid + (x + map->x) * 2;
 
-        struct CharBlk4 *a = &term->blks[buf_i];
-        struct CharBlk4 *b = &term->blks[buf_i + 1];
+        struct TChar4 *a = &term->blks[buf_i];
+        struct TChar4 *b = &term->blks[buf_i + 1];
 
         if (map->blks[map_i] == 0) {
             a->ch = '(';
diff --git a/source/game/tetr.h b/source/game/tetr.h
index 7b5fd45..896e510 100644
--- a/source/game/tetr.h
+++ b/source/game/tetr.h
@@ -23,6 +23,6 @@ struct TetrMap {
 
 struct TetrMap NewTetrMap(u8 *blks, size_t wid, size_t hgt);
 
-void TetrMapToTermBuf(struct TetrMap *map, struct TermBuf *term);
+void TetrMapToTermBuf(struct TetrMap *map, struct Terminal *term);
 
 bool TetrCollisionCheck(struct TetrMap *board, struct TetrMap *piece, int dx, int dy);
\ No newline at end of file
diff --git a/source/io/ctrl.c b/source/io/ctrl.c
index f1548db..3ab135a 100644
--- a/source/io/ctrl.c
+++ b/source/io/ctrl.c
@@ -88,64 +88,83 @@ hashtype Hash(void *item, size_t size)
     return h;
 }
 
-struct ident {
-    u16 id;
-    u8 type;
-};
-
 hashtype hash_ident(u16f value, u8f type)
 {
-    struct ident id = { value, type };
-    return Hash(&id, sizeof(struct ident));
+    struct id {
+        u16 id;
+        u8 type;
+    };
+
+    struct id id = { value, type };
+    return Hash(&id, sizeof(struct id));
 }
 
-struct bkt {
+struct ctrl_bkt {
     hashtype hash;
     u16 value;
     u8 type;
     struct Axis *axis;
 };
 
-struct dict {
+struct ctrl_dict {
     size_t capacity;
     size_t filled;
-    struct bkt *bkts;
+    struct ctrl_bkt *bkts;
 };
 
 struct Ctrl {
-    struct dict codes;
-    struct dict binds;
+    struct ctrl_dict codes;
+    struct ctrl_dict binds;
 
     pthread_t thread;
     pthread_mutex_t mutex;
 };
-typedef struct Ctrl Ctrl;
 
-Ctrl NewCtrl(struct dict *codes, struct dict *binds, struct Axis *axes)
+struct Ctrl NewCtrl()
 {
-    memset(codes->bkts, 0, sizeof(struct bkt) * codes->capacity);
-    memset(binds->bkts, 0, sizeof(struct bkt) * binds->capacity);
-    memset(axes, 0, sizeof(struct Axis) * codes->capacity);
-
-    for (size_t i = 0; i < codes->capacity; i++) {
-        codes->bkts[i].axis = &axes[i];
-    }
-
-    Ctrl ctrl;
-    ctrl.codes = *codes;
-    ctrl.binds = *binds;
-    ctrl.mutex = PTHREAD_MUTEX_INITIALIZER;
+    struct Ctrl ctrl = (struct Ctrl) {
+        .codes = (struct ctrl_dict) {
+            .capacity = 0,
+            .filled = 0,
+            .bkts = nullptr
+        },
+        .binds = (struct ctrl_dict) {
+            .capacity = 0,
+            .filled = 0,
+            .bkts = nullptr
+        },
 
+        .mutex = PTHREAD_MUTEX_INITIALIZER
+    };
     return ctrl;
 }
 
-struct bkt *get_bkt(struct dict *dict, size_t i)
+void CtrlSet(
+    struct Ctrl *ctrl,
+    struct ctrl_bkt *code_bkts,
+    struct ctrl_bkt *bind_bkts,
+    struct Axis *axes,
+    size_t c_len,
+    size_t b_len
+) {
+    ctrl->codes.capacity = c_len;
+    ctrl->codes.bkts = code_bkts;
+    memset(code_bkts, 0, sizeof(struct ctrl_bkt) * c_len);
+
+    ctrl->binds.capacity = b_len;
+    ctrl->binds.bkts = bind_bkts;
+    memset(bind_bkts, 0, sizeof(struct ctrl_bkt) * b_len);
+    
+    
+}
+
+struct ctrl_bkt *get_bkt(struct ctrl_dict *dict, size_t i)
 {
     assert(i < dict->capacity);
     return &dict->bkts[i];
 }
 
-void set_bkt(struct bkt *bkt, hashtype hash, u16f value, u8f type)
+void set_bkt(struct ctrl_bkt *bkt, hashtype hash, u16f value, u8f type)
 {
     bkt->hash = hash;
     bkt->value = value;
@@ -157,14 +176,14 @@ size_t wrap(size_t x, size_t wrap)
     return x % (SIZE_MAX - wrap + 1);
 }
 
-bool find_or_set(struct dict *dict, struct bkt **out, u16f value, u8f type)
+bool find_or_set(struct ctrl_dict *dict, struct ctrl_bkt **out, u16f value, u8f type)
 {
     hashtype hash = hash_ident(value, type);
     const size_t index = hash % dict->capacity;
 
     size_t i = index;
     while (i != wrap(index - 1, dict->capacity)) {
-        struct bkt *bkt = get_bkt(dict, i);
+        struct ctrl_bkt *bkt = get_bkt(dict, i);
 
         if (bkt->hash == 0) {
             set_bkt(bkt, hash, value, type);
@@ -185,14 +204,14 @@ bool find_or_set(struct dict *dict, struct bkt **out, u16f value, u8f type)
     return false;
 }
 
-struct bkt *find(struct dict *dict, u16f value, u8f type)
+struct ctrl_bkt *find(struct ctrl_dict *dict, u16f value, u8f type)
 {
     hashtype hash = hash_ident(value, type);
     const size_t index = hash % dict->capacity;
 
     size_t i = index;
     while (i != wrap(index - 1, dict->capacity)) {
-        struct bkt *bkt = get_bkt(dict, i);
+        struct ctrl_bkt *bkt = get_bkt(dict, i);
         if (bkt->hash == 0)
             goto next;
 
@@ -206,25 +225,25 @@ next:
     return nullptr;
 }
 
-struct Axis *find_axis(struct dict *dict, u16f value, u8f type)
+struct Axis *find_axis(struct ctrl_dict *dict, u16f value, u8f type)
 {
-    struct bkt *bkt = find(dict, value, type);
+    struct ctrl_bkt *bkt = find(dict, value, type);
     if (bkt == nullptr)
         return nullptr;
 
     return bkt->axis;
 }
 
-bool CtrlMap(Ctrl *ctrl, u16f code, u16f bind, u8f type)
+bool CtrlMap(struct Ctrl *ctrl, u16f code, u16f bind, u8f type)
 {
     assert(ctrl->codes.filled < ctrl->codes.capacity);
     assert(ctrl->binds.filled < ctrl->binds.capacity);
 
-    struct bkt *code_bkt;
+    struct ctrl_bkt *code_bkt;
     find_or_set(&ctrl->codes, &code_bkt, code, type);
     assert(code_bkt != nullptr);
 
-    struct bkt *bind_bkt;
+    struct ctrl_bkt *bind_bkt;
     bool bind_existed = find_or_set(&ctrl->binds, &bind_bkt, bind, type);
     assert(bind_bkt != nullptr);
     
@@ -235,9 +254,9 @@ bool CtrlMap(Ctrl *ctrl, u16f code, u16f bind, u8f type)
     return true;
 }
 
-struct Axis *CtrlGet(Ctrl *ctrl, u16f code, u8f type)
+struct Axis *CtrlGet(struct Ctrl *ctrl, u16f code, u8f type)
 {
-    struct bkt *code_bkt = find(&ctrl->codes, code, type);
+    struct ctrl_bkt *code_bkt = find(&ctrl->codes, code, type);
     if (code_bkt == nullptr)
         return nullptr;
 
@@ -267,13 +286,10 @@ void update_joystick(struct Axis *axis, struct CtrlRecord *record)
     axis->last_pressed = record->timestamp;
 }
 
-bool CtrlPoll(Ctrl *ctrl, struct RecordBuffer *buf)
+bool CtrlPoll(struct Ctrl *ctrl, struct RecordBuffer *rec_buf)
 {
-    pthread_mutex_lock(&buf->mutex);
-    pthread_mutex_lock(&ctrl->mutex);
-
-    for (size_t i = 0; i < buf->count; i++) {
-        struct CtrlRecord *rec = &buf->records[i];
+    for (size_t i = 0; i < rec_buf->count; i++) {
+        struct CtrlRecord *rec = &rec_buf->records[i];
 
         struct Axis *axis = find_axis(&ctrl->binds, rec->id, rec->type);
         if (axis == nullptr)
@@ -294,8 +310,6 @@ bool CtrlPoll(Ctrl *ctrl, struct RecordBuffer *buf)
         }
     }
 
-    buf->count = 0;
-    pthread_mutex_unlock(&buf->mutex);
-    pthread_mutex_unlock(&ctrl->mutex);
+    rec_buf->count = 0;
     return true;
 }
\ No newline at end of file
diff --git a/source/io/ctrl.h b/source/io/ctrl.h
index f3851ab..068ab6d 100644
--- a/source/io/ctrl.h
+++ b/source/io/ctrl.h
@@ -84,32 +84,31 @@ enum CtrlCode {
 
 typedef u32 hashtype;
 
-struct bkt {
+struct ctrl_bkt {
     hashtype hash;
     u16 value;
     u8 type;
     struct Axis *axis;
 };
 
-struct dict {
+struct ctrl_dict {
     size_t capacity;
     size_t filled;
-    struct bkt *bkts;
+    struct ctrl_bkt *bkts;
 };
 
 struct Ctrl {
-    struct dict codes;
-    struct dict binds;
+    struct ctrl_dict codes;
+    struct ctrl_dict binds;
 
     pthread_t thread;
     pthread_mutex_t mutex;
 };
-typedef struct Ctrl Ctrl;
 
-Ctrl NewCtrl(struct dict *codes, struct dict *binds, struct Axis *axes);
+struct Ctrl NewCtrl(struct ctrl_dict *codes, struct ctrl_dict *binds, struct Axis *axes);
 
-bool CtrlMap(Ctrl *ctrl, u16f code, u16f bind, u8f type);
+bool CtrlMap(struct Ctrl *ctrl, u16f code, u16f bind, u8f type);
 
-struct Axis *CtrlGet(Ctrl *ctrl, u16f code, u8f type);
+struct Axis *CtrlGet(struct Ctrl *ctrl, u16f code, u8f type);
 
-bool CtrlPoll(Ctrl *ctrl, struct RecordBuffer *buf);
\ No newline at end of file
+bool CtrlPoll(struct Ctrl *ctrl, struct RecordBuffer *buf);
\ No newline at end of file
diff --git a/source/io/instance.c b/source/io/instance.c
deleted file mode 100644
index 26b7d58..0000000
--- a/source/io/instance.c
+++ /dev/null
@@ -1,16 +0,0 @@
-#include <iso646.h>
-#include <pthread.h>
-#include <stdbool.h>
-#include <stdint.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-
-#include "fumotris.h"
-
-struct Window {
-    size_t x;
-    size_t y;
-    
-    u16f fps;
-};
\ No newline at end of file
diff --git a/source/io/instance.h b/source/io/instance.h
deleted file mode 100644
index 5ace3ff..0000000
--- a/source/io/instance.h
+++ /dev/null
@@ -1,17 +0,0 @@
-#pragma once
-#include <iso646.h>
-#include <pthread.h>
-#include <stdbool.h>
-#include <stdint.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-
-#include "fumotris.h"
-
-struct Window {
-    size_t x;
-    size_t y;
-    
-    u16f fps;
-};
\ No newline at end of file
diff --git a/source/io/platforms/win.c b/source/io/platforms/win.c
index a4fa385..37944b1 100644
--- a/source/io/platforms/win.c
+++ b/source/io/platforms/win.c
@@ -3,23 +3,23 @@
 #include <stdint.h>
 #include <stdio.h>
 #include <stdlib.h>
+#include <time.h>
+#include <math.h>
 
 #include "input.h"
-#include "instance.h"
 #include "winhandler.h"
+#include "term.h"
 
-bool WindowsInit(struct Window *window)
+bool WindowsInit(struct Terminal *term)
 {
-    if (!WinInitInputHandle())
-        return false;
-
-    if (!WinInitTimer())
+    if (!WinInitHandles())
         return false;
 
     if (!WinInitConsole())
         return false;
 
-    
+    if (!WinGetRefreshRate(&term->refresh_rate))
+        return false;
 
     return true;
 }
@@ -31,5 +31,10 @@ bool WindowsBlockInput(struct RecordBuffer *buf)
 
 bool WindowsWait(double seconds)
 {
-    return WinWait(seconds);
+    struct timespec duration = {
+        .tv_sec = seconds,
+        .tv_nsec = fmod(seconds, 1) * 1e9
+    };
+
+    return WinWait(duration);
 }
\ No newline at end of file
diff --git a/source/io/platforms/winhandler.c b/source/io/platforms/winhandler.c
index a59f809..f049086 100644
--- a/source/io/platforms/winhandler.c
+++ b/source/io/platforms/winhandler.c
@@ -10,7 +10,7 @@
 #include "fumotris.h"
 #include "gametime.h"
 #include "input.h"
-#include "instance.h"
+#include "term.h"
 
 struct Windows {
     HANDLE input_handle;
@@ -54,7 +54,7 @@ bool WinInitConsole()
     return SetConsoleMode(windows.input_handle, mode);
 }
 
-bool WinGetRefreshRate(struct Window *window)
+bool WinGetRefreshRate(u32f *out)
 {
     LPDEVMODE mode;
     if(!EnumDisplaySettingsA(
@@ -64,7 +64,7 @@ bool WinGetRefreshRate(struct Window *window)
     ))
         return false;
 
-    window->fps = mode->dmDisplayFrequency;
+    *out = mode->dmDisplayFrequency;
     return true;
 }
 
@@ -147,19 +147,17 @@ bool WinBlockInput(struct RecordBuffer *buf)
         if (!include)
             continue;
 
-        buf->records[buf->count] = record;
-        buf->count += 1;
+        buf->records[buf->count++] = record;
     }
 
     pthread_mutex_unlock(&buf->mutex);
     return true;
 }
 
-bool WinWait(struct timespec duration)
+bool WinWait(struct timespec relative)
 {
     LARGE_INTEGER duration;
-    duration.QuadPart = (u64)(-10000000.0 * seconds);
-    
+    duration.QuadPart = -10000000 * relative.tv_sec - relative.tv_nsec / 100;
 
     if (!SetWaitableTimer(
         windows.draw_handles[0],    // Timer
diff --git a/source/io/platforms/winhandler.h b/source/io/platforms/winhandler.h
index 5eaf3c3..a123a2b 100644
--- a/source/io/platforms/winhandler.h
+++ b/source/io/platforms/winhandler.h
@@ -11,6 +11,8 @@ bool WinInitHandles();
 
 bool WinInitConsole();
 
+bool WinGetRefreshRate(u32f *out);
+
 bool WinBlockInput(struct RecordBuffer *buf);
 
-bool WinWait(double seconds);
\ No newline at end of file
+bool WinWait(struct timespec relative);
\ No newline at end of file
diff --git a/source/main.c b/source/main.c
index 9923c95..0607a04 100644
--- a/source/main.c
+++ b/source/main.c
@@ -10,11 +10,22 @@
 #include "fumotris.h"
 #include "term.h"
 #include "tetr.h"
+#include "event.h"
 
 #ifdef _WIN32
 #include "win.h"
 #endif
 
+struct Instance {
+    struct Terminal term;
+    struct Ctrl ctrl;
+    struct RecordBuffer rec_buf;
+
+    struct Delegate on_start;
+    struct Delegate on_draw;
+    struct Delegate on_update;
+};
+
 const u8 I[16] = {
     0, 0, 0, 0,
     0, 0, 0, 0,
@@ -79,39 +90,61 @@ const struct CtrlBind ctrl_binds[12] = {
     { MOUSE, 0, JOYSTICK }
 };
 
-void Update(Ctrl *ctrl)
+void Draw(struct Terminal *term)
 {
+    pthread_mutex_lock(&term->mutex);
 
+    struct TChar4 term_blks[term->area];
+
+    pthread_cond_signal(&term->is_initialized);
+    pthread_mutex_unlock(&term->mutex);
+
+    size_t buf_size = TermBufSize(term);
+    char buf[buf_size];
+
+    while (true) {
+        pthread_mutex_lock(&term->mutex);
+        pthread_cond_wait(&term->draw_ready, &term->mutex);
+
+        TermOut(term, buf, buf_size);
+
+        pthread_mutex_unlock(&term->mutex);
+
+        puts(buf);
+    }
 }
 
-void Loop(Ctrl *ctrl, struct RecordBuffer *in_buf)
+void Update(struct Terminal *term, struct Ctrl *ctrl, struct RecordBuffer *rec_buf)
 {
-    struct CharBlk4 term_blks[20 * 20];
-    struct TermBuf term = NewTermBuf(term_blks, 20, 20);
+    pthread_mutex_lock(&term->mutex);
+    pthread_cond_wait(&term->is_initialized, &term->mutex);
+    pthread_mutex_unlock(&term->mutex);
 
-    size_t out_max = TermMaxChars(&term);
-    char out[out_max];
+    while (true) {
+        // Input
+        pthread_mutex_lock(&rec_buf->mutex);
+        CtrlPoll(ctrl, rec_buf);
+        pthread_mutex_unlock(&rec_buf->mutex);
 
-    u8 board_blks[10 * 20];
-    struct TetrMap board = NewTetrMap(board_blks, 10, 20);
+        // Game logic
+        
 
-    u8 falling_blks[4 * 4];
-    struct TetrMap falling = NewTetrMap(falling_blks, 4, 4);
-    memcpy(falling_blks, I, falling.area);
-
-    for (int i = 0; i < 7779997; i++) {
-        CtrlPoll(ctrl, in_buf);
-
-        TetrMapToTermBuf(&board, &term);
-        TetrMapToTermBuf(&falling, &term);
-
-        TermBufToChars(&term, out, out_max);
-        puts(out);
-
-        WindowsWait(1.0/30);
+        // Draw
+        pthread_mutex_lock(&term->mutex);
+        pthread_cond_signal(&term->draw_ready);
+        pthread_mutex_unlock(&term->mutex);
     }
 }
 
+void Loop(struct Ctrl *ctrl, struct RecordBuffer *rec_buf)
+{
+    pthread_t draw_thread;
+    pthread_create(&draw_thread, nullptr, Draw, &term);
+
+    pthread_t update_thread;
+    pthread_create(&update_thread, nullptr, Update, &term);
+}
+
 int main()
 {
     #ifdef _WIN32
@@ -119,33 +152,43 @@ int main()
         exit(1);
     #endif
 
-    struct bkt code_bkts[code_count];
-    struct dict codes = {
+    struct ctrl_bkt code_bkts[code_count];
+    struct ctrl_dict codes = {
         .capacity = code_count,
         .filled = 0,
         .bkts = code_bkts
     };
-    struct bkt bind_bkts[code_count];
-    struct dict binds = {
+    struct ctrl_bkt bind_bkts[code_count];
+    struct ctrl_dict binds = {
         .capacity = code_count,
         .filled = 0,
         .bkts = bind_bkts
     };
     struct Axis axes[code_count];
-    Ctrl ctrl = NewCtrl(&codes, &binds, axes);
+    struct Ctrl ctrl = NewCtrl(&codes, &binds, axes);
 
     for (size_t i = 0; i < code_count; i++) {
         const struct CtrlBind *bind = &ctrl_binds[i];
         CtrlMap(&ctrl, bind->code, bind->bind, bind->type);
     }
 
-    struct RecordBuffer in_buf = {
+    struct RecordBuffer rec_buf = {
         .count = 0,
         .mutex = PTHREAD_MUTEX_INITIALIZER
     };
 
-    StartInput(&ctrl, &in_buf);
-    Loop(&ctrl, &in_buf);
+    struct Instance game = {
+        .term = NewTerm(nullptr, 20, 20),
+        .ctrl = NewCtrl(),
+
+        .on_start = NewDelegate(16),
+        .on_draw = NewDelegate(16),
+        .on_update = NewDelegate(16)
+    };
+
+    StartInput(&ctrl, &rec_buf);
+    Loop(&ctrl, &rec_buf);
+
     JoinInput(&ctrl);
 
     return 0;
diff --git a/source/term/term.c b/source/term/term.c
index 8ea2659..135066c 100644
--- a/source/term/term.c
+++ b/source/term/term.c
@@ -5,33 +5,47 @@
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
+#include <pthread.h>
 
 #include "fumotris.h"
 
-struct CharBlk4 {
+struct TChar4 {
     char ch;
     u8 bg : 4;
     u8 fg : 4;
 };
 
-struct TermBuf {
+struct Terminal {
     size_t wid;
     size_t hgt;
     size_t area;
-    struct CharBlk4 *blks;
+    u16f refresh_rate;
+    struct TChar4 *blks;
+
+    pthread_mutex_t mutex;
+    pthread_cond_t is_initialized;
+    pthread_cond_t draw_ready;
 };
 
-struct TermBuf NewTermBuf(struct CharBlk4 *blks, size_t wid, size_t hgt)
+struct Terminal NewTerm(struct TChar4 *blks, size_t wid, size_t hgt)
 {
     size_t area = wid * hgt;
-    memset(blks, 0, sizeof(struct CharBlk4) * area);
+    memset(blks, 0, sizeof(struct TChar4) * area);
 
-    return (struct TermBuf) {
-        wid, hgt, area, blks
+    return (struct Terminal) {
+        .wid = wid,
+        .hgt = hgt,
+        .area = area,
+        .refresh_rate = 60,
+        .blks = blks,
+        
+        .mutex = PTHREAD_MUTEX_INITIALIZER,
+        .is_initialized = PTHREAD_COND_INITIALIZER,
+        .draw_ready = PTHREAD_COND_INITIALIZER
     };
 }
 
-size_t TermMaxChars(struct TermBuf *term)
+size_t TermBufSize(struct Terminal *term)
 {
     static const size_t max_color_str_len = 10;
     static const size_t reset_str_len = 7;
@@ -52,7 +66,7 @@ size_t printcol4(char *buf, size_t at, size_t max, u8f col, char ch)
     return snprintf(buf + at, max - at, "\x1b[%um%c", col, ch);
 }
 
-size_t printblk4(char *buf, size_t at, size_t max, struct CharBlk4 *blk)
+size_t printblk4(char *buf, size_t at, size_t max, struct TChar4 *blk)
 {
     u8f bg;
     if (blk->bg < 8)
@@ -69,17 +83,17 @@ size_t printblk4(char *buf, size_t at, size_t max, struct CharBlk4 *blk)
     return snprintf(buf + at, max - at, "\x1b[%u;%um%c", bg, fg, blk->ch);
 }
 
-size_t TermBufToChars(struct TermBuf *term, char *buf, size_t max_chars)
+size_t TermOut(struct Terminal *term, char *buf, size_t n)
 {
     u8f last_bg = 0;
     u8f last_fg = 0;
 
-    size_t filled = snprintf(buf, max_chars, "\x1b[H\x1b[0m");
+    size_t filled = snprintf(buf, n, "\x1b[H\x1b[0m");
 
     for(size_t y = 0; y < term->hgt; y++) {
     for(size_t x = 0; x < term->wid; x++) {
         size_t i = y * term->wid + x;
-        struct CharBlk4 *blk = &term->blks[i];
+        struct TChar4 *blk = &term->blks[i];
         
         // DEBUG
         if (blk->ch == 0)
@@ -89,13 +103,13 @@ size_t TermBufToChars(struct TermBuf *term, char *buf, size_t max_chars)
         if (blk->bg != 0 and blk->bg != last_bg) {
             last_bg = blk->bg;
             if (blk->fg != 0 and blk->fg != last_fg) {
-                filled += printblk4(buf, filled, max_chars, blk);
+                filled += printblk4(buf, filled, n, blk);
                 last_fg = blk->fg;
             } else {
-                filled += printcol4(buf, filled, max_chars, blk->bg, blk->ch);
+                filled += printcol4(buf, filled, n, blk->bg, blk->ch);
             }
         } else if (blk->fg != 0 and blk->fg != last_fg) {
-            filled += printcol4(buf, filled, max_chars, blk->fg, blk->ch);
+            filled += printcol4(buf, filled, n, blk->fg, blk->ch);
             last_fg = blk->fg;
         } else {
             buf[filled] = blk->ch;
diff --git a/source/term/term.h b/source/term/term.h
index d8c9daa..3c0d554 100644
--- a/source/term/term.h
+++ b/source/term/term.h
@@ -6,24 +6,30 @@
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
+#include <pthread.h>
 
 #include "fumotris.h"
 
-struct CharBlk4 {
+struct TChar4 {
     char ch;
     u8 bg : 4;
     u8 fg : 4;
 };
 
-struct TermBuf {
+struct Terminal {
     size_t wid;
     size_t hgt;
     size_t area;
-    struct CharBlk4 *blks;
+    u16f refresh_rate;
+    struct TChar4 *blks;
+
+    pthread_mutex_t mutex;
+    pthread_cond_t is_initialized;
+    pthread_cond_t draw_ready;
 };
 
-struct TermBuf NewTermBuf(struct CharBlk4 *blks, size_t wid, size_t hgt);
+struct Terminal NewTerm(struct TChar4 *blks, size_t wid, size_t hgt);
 
-size_t TermMaxChars(struct TermBuf *term);
+size_t TermBufSize(struct Terminal *term);
 
-size_t TermBufToChars(struct TermBuf *term, char *buf, size_t max_chars);
\ No newline at end of file
+size_t TermOut(struct Terminal *term, char *buf, size_t max_chars);
\ No newline at end of file