diff --git a/Fumofumotris.code-workspace b/Fumofumotris.code-workspace
index 3a25141..c4b7996 100644
--- a/Fumofumotris.code-workspace
+++ b/Fumofumotris.code-workspace
@@ -60,7 +60,8 @@
 			"stdbool.h": "c",
 			"fumoengine.h": "c",
 			"event.h": "c",
-			"fumocommon.h": "c"
+			"fumocommon.h": "c",
+			"terminal.h": "c"
 		}
 	}
 }
\ No newline at end of file
diff --git a/build/errors.txt b/build/errors.txt
index c099047..170529f 100644
--- a/build/errors.txt
+++ b/build/errors.txt
@@ -1 +1 @@
-{"ringbuffer": "", "event": "", "ctrl": "", "terminal": "", "fumoengine": "", "parseinput": "", "dictionary": "", "fumocommon": "", "win": "", "input": "", "fumotris": "", "vector": "", "tetra": ""}
\ No newline at end of file
+{"ringbuffer": "", "event": "", "ctrl": "", "terminal": "", "fumoengine": "", "parseinput": "", "dictionary": "", "fumocommon": "", "win": "", "input": "", "fumotris": "\u001b[01m\u001b[Ksource\\fumotris\\fumotris.c:\u001b[m\u001b[K In function '\u001b[01m\u001b[Kmain\u001b[m\u001b[K':\n\u001b[01m\u001b[Ksource\\fumotris\\fumotris.c:120:37:\u001b[m\u001b[K \u001b[01;35m\u001b[Kwarning: \u001b[m\u001b[Kpassing argument 3 of '\u001b[01m\u001b[KEventAdd\u001b[m\u001b[K' from incompatible pointer type [\u001b[01;35m\u001b[K-Wincompatible-pointer-types\u001b[m\u001b[K]\n  120 |     EventAdd(&inst.on_start, &game, \u001b[01;35m\u001b[KFumotrisStart\u001b[m\u001b[K);\n      |                                     \u001b[01;35m\u001b[K^~~~~~~~~~~~~\u001b[m\u001b[K\n      |                                     \u001b[01;35m\u001b[K|\u001b[m\u001b[K\n      |                                     \u001b[01;35m\u001b[Kvoid (*)(struct Instance *, struct Fumotris *)\u001b[m\u001b[K\nIn file included from \u001b[01m\u001b[Ksource\\fumoengine/fumoengine.h:3\u001b[m\u001b[K,\n                 from \u001b[01m\u001b[Ksource\\fumotris\\fumotris.h:2\u001b[m\u001b[K,\n                 from \u001b[01m\u001b[Ksource\\fumotris\\fumotris.c:1\u001b[m\u001b[K:\n\u001b[01m\u001b[Ksource\\fumoengine\\include/event.h:24:60:\u001b[m\u001b[K \u001b[01;36m\u001b[Knote: \u001b[m\u001b[Kexpected '\u001b[01m\u001b[Khandler\u001b[m\u001b[K' {aka '\u001b[01m\u001b[Kvoid (*)(void *, void *)\u001b[m\u001b[K'} but argument is of type '\u001b[01m\u001b[Kvoid (*)(struct Instance *, struct Fumotris *)\u001b[m\u001b[K'\n   24 | bool EventAdd(struct Event *event, void *instance, \u001b[01;36m\u001b[Khandler callback\u001b[m\u001b[K);\n      |                                                    \u001b[01;36m\u001b[K~~~~~~~~^~~~~~~~\u001b[m\u001b[K\n\u001b[01m\u001b[Ksource\\fumotris\\fumotris.c:121:38:\u001b[m\u001b[K \u001b[01;35m\u001b[Kwarning: \u001b[m\u001b[Kpassing argument 3 of '\u001b[01m\u001b[KEventAdd\u001b[m\u001b[K' from incompatible pointer type [\u001b[01;35m\u001b[K-Wincompatible-pointer-types\u001b[m\u001b[K]\n  121 |     EventAdd(&inst.on_update, &game, \u001b[01;35m\u001b[KFumotrisUpdate\u001b[m\u001b[K);\n      |                                      \u001b[01;35m\u001b[K^~~~~~~~~~~~~~\u001b[m\u001b[K\n      |                                      \u001b[01;35m\u001b[K|\u001b[m\u001b[K\n      |                                      \u001b[01;35m\u001b[Kvoid (*)(struct Instance *, struct Fumotris *)\u001b[m\u001b[K\n\u001b[01m\u001b[Ksource\\fumoengine\\include/event.h:24:60:\u001b[m\u001b[K \u001b[01;36m\u001b[Knote: \u001b[m\u001b[Kexpected '\u001b[01m\u001b[Khandler\u001b[m\u001b[K' {aka '\u001b[01m\u001b[Kvoid (*)(void *, void *)\u001b[m\u001b[K'} but argument is of type '\u001b[01m\u001b[Kvoid (*)(struct Instance *, struct Fumotris *)\u001b[m\u001b[K'\n   24 | bool EventAdd(struct Event *event, void *instance, \u001b[01;36m\u001b[Khandler callback\u001b[m\u001b[K);\n      |                                                    \u001b[01;36m\u001b[K~~~~~~~~^~~~~~~~\u001b[m\u001b[K\n\u001b[01m\u001b[Ksource\\fumotris\\fumotris.c:122:36:\u001b[m\u001b[K \u001b[01;35m\u001b[Kwarning: \u001b[m\u001b[Kpassing argument 3 of '\u001b[01m\u001b[KEventAdd\u001b[m\u001b[K' from incompatible pointer type [\u001b[01;35m\u001b[K-Wincompatible-pointer-types\u001b[m\u001b[K]\n  122 |     EventAdd(&inst.on_draw, &game, \u001b[01;35m\u001b[KFumotrisDraw\u001b[m\u001b[K);\n      |                                    \u001b[01;35m\u001b[K^~~~~~~~~~~~\u001b[m\u001b[K\n      |                                    \u001b[01;35m\u001b[K|\u001b[m\u001b[K\n      |                                    \u001b[01;35m\u001b[Kvoid (*)(struct Instance *, struct Fumotris *)\u001b[m\u001b[K\n\u001b[01m\u001b[Ksource\\fumoengine\\include/event.h:24:60:\u001b[m\u001b[K \u001b[01;36m\u001b[Knote: \u001b[m\u001b[Kexpected '\u001b[01m\u001b[Khandler\u001b[m\u001b[K' {aka '\u001b[01m\u001b[Kvoid (*)(void *, void *)\u001b[m\u001b[K'} but argument is of type '\u001b[01m\u001b[Kvoid (*)(struct Instance *, struct Fumotris *)\u001b[m\u001b[K'\n   24 | bool EventAdd(struct Event *event, void *instance, \u001b[01;36m\u001b[Khandler callback\u001b[m\u001b[K);\n      |                                                    \u001b[01;36m\u001b[K~~~~~~~~^~~~~~~~\u001b[m\u001b[K\n\u001b[01m\u001b[Ksource\\fumotris\\fumotris.c:124:32:\u001b[m\u001b[K \u001b[01;35m\u001b[Kwarning: \u001b[m\u001b[Kpassing argument 3 of '\u001b[01m\u001b[KCoroutineAdd\u001b[m\u001b[K' from incompatible pointer type [\u001b[01;35m\u001b[K-Wincompatible-pointer-types\u001b[m\u001b[K]\n  124 |     CoroutineAdd(&inst, &game, \u001b[01;35m\u001b[KFumotrisFall\u001b[m\u001b[K);\n      |                                \u001b[01;35m\u001b[K^~~~~~~~~~~~\u001b[m\u001b[K\n      |                                \u001b[01;35m\u001b[K|\u001b[m\u001b[K\n      |                                \u001b[01;35m\u001b[Knsec (*)(struct Instance *, struct Fumotris *) {aka long long unsigned int (*)(struct Instance *, struct Fumotris *)}\u001b[m\u001b[K\n\u001b[01m\u001b[Ksource\\fumoengine/fumoengine.h:35:73:\u001b[m\u001b[K \u001b[01;36m\u001b[Knote: \u001b[m\u001b[Kexpected '\u001b[01m\u001b[Kcoroutine_handler\u001b[m\u001b[K' {aka '\u001b[01m\u001b[Klong long unsigned int (*)(void *, void *)\u001b[m\u001b[K'} but argument is of type '\u001b[01m\u001b[Knsec (*)(struct Instance *, struct Fumotris *)\u001b[m\u001b[K' {aka '\u001b[01m\u001b[Klong long unsigned int (*)(struct Instance *, struct Fumotris *)\u001b[m\u001b[K'}\n   35 | bool CoroutineAdd(struct Instance *inst, void *state, \u001b[01;36m\u001b[Kcoroutine_handler callback\u001b[m\u001b[K);\n      |                                                       \u001b[01;36m\u001b[K~~~~~~~~~~~~~~~~~~^~~~~~~~\u001b[m\u001b[K\n", "vector": "", "tetra": ""}
\ No newline at end of file
diff --git a/build/hdr_checksums.txt b/build/hdr_checksums.txt
index 37d3502..e0cb5ab 100644
--- a/build/hdr_checksums.txt
+++ b/build/hdr_checksums.txt
@@ -1 +1 @@
-["1d6bdf7e8de4ac751252b67027e5d57e", "9df90eabc8908cac60aa774d335a106c", "1420f33d62a8ed8429c8f1a96f1ab33e", "dc6df72158812bc9f6ed484a4cfb046b", "6669fc7fcffc77563f1315cb7710ec82", "333c7211bb2c72ad321495f53d11bff0", "088145536b04ef82517eb93630888dff", "f61af2abe56cd6881a830ae6222483e9", "e09059d1f20c982c6c42a61a0754c102", "fbccab3d5cd1838cbf8ad1d4e2a7c03b", "330b6f9493d091e7c340c1434b6f80b4", "e38bd5ea2b554a21849158242a2add8e"]
\ No newline at end of file
+["f315479de287d3cccdfa665c1e8c58bd", "7d30e573f96a566ed9510833b95d5520", "0eaec40fe47b9cb31ff5a70f7bfee15a", "72e1b62b85eac654ed094a8ecf009416", "5ce28b2bf9d7c5750ea290f80fbd1264", "0d65896ce70d098bdf4cb3587ca74508", "f6611a0f07f78cc4fd52df267e0d3d25", "9f0597e7cacc7c918163affc5f3d9841", "cd22e396133a64303ecae95280f8ba1a", "7d7451ae7d88f4d1f84055180f9e84a7", "29f6d19bcc5a1897b220a192ef6fc3cc", "1d88301163b019760c3dc8396ce2aa4b", "ec4912a725a2bc606bd76ba34159435c"]
\ No newline at end of file
diff --git a/build/src_checksums.txt b/build/src_checksums.txt
index 0637a08..4e54ee3 100644
--- a/build/src_checksums.txt
+++ b/build/src_checksums.txt
@@ -1 +1 @@
-[]
\ No newline at end of file
+["4aa55dfc1d038e75d0efbf277e6033a4"]
\ No newline at end of file
diff --git a/debug.exe b/debug.exe
index dda63fa..b86c932 100644
Binary files a/debug.exe and b/debug.exe differ
diff --git a/objects/ctrl.o b/objects/ctrl.o
index 9638d8e..ae0f4ec 100644
Binary files a/objects/ctrl.o and b/objects/ctrl.o differ
diff --git a/objects/dictionary.o b/objects/dictionary.o
index 5aa83ba..896882c 100644
Binary files a/objects/dictionary.o and b/objects/dictionary.o differ
diff --git a/objects/event.o b/objects/event.o
index 68654a0..1536ac0 100644
Binary files a/objects/event.o and b/objects/event.o differ
diff --git a/objects/fumocommon.o b/objects/fumocommon.o
index bb3f424..5e59d86 100644
Binary files a/objects/fumocommon.o and b/objects/fumocommon.o differ
diff --git a/objects/fumoengine.o b/objects/fumoengine.o
index 9b15b8a..fe83adc 100644
Binary files a/objects/fumoengine.o and b/objects/fumoengine.o differ
diff --git a/objects/fumotris.o b/objects/fumotris.o
index 3268eb1..467e9b5 100644
Binary files a/objects/fumotris.o and b/objects/fumotris.o differ
diff --git a/objects/input.o b/objects/input.o
index b9a14eb..4026661 100644
Binary files a/objects/input.o and b/objects/input.o differ
diff --git a/objects/parseinput.o b/objects/parseinput.o
index 3353ca8..08a24b4 100644
Binary files a/objects/parseinput.o and b/objects/parseinput.o differ
diff --git a/objects/ringbuffer.o b/objects/ringbuffer.o
index 550bf82..9f3e95a 100644
Binary files a/objects/ringbuffer.o and b/objects/ringbuffer.o differ
diff --git a/objects/terminal.o b/objects/terminal.o
index 7c54a21..9485235 100644
Binary files a/objects/terminal.o and b/objects/terminal.o differ
diff --git a/objects/tetra.o b/objects/tetra.o
index 871a9ab..9b3d35c 100644
Binary files a/objects/tetra.o and b/objects/tetra.o differ
diff --git a/objects/vector.o b/objects/vector.o
index 932cde8..a1bf4e5 100644
Binary files a/objects/vector.o and b/objects/vector.o differ
diff --git a/objects/win.o b/objects/win.o
index f9b8c56..10298db 100644
Binary files a/objects/win.o and b/objects/win.o differ
diff --git a/source/fumoengine/fumocommon.c b/source/fumoengine/fumocommon.c
index a340fc3..f70f559 100644
--- a/source/fumoengine/fumocommon.c
+++ b/source/fumoengine/fumocommon.c
@@ -2,11 +2,16 @@
 #include <time.h>
 
 
-usize min_usize(usize a, usize b)
+usize min(usize a, usize b)
 {
     return a < b ? a : b;
 }
 
+usize max(usize a, usize b)
+{
+    return a > b ? a : b;
+}
+
 nsec TimeNow()
 {
     struct timespec ts;
diff --git a/source/fumoengine/fumocommon.h b/source/fumoengine/fumocommon.h
index 132da2e..86dc12b 100644
--- a/source/fumoengine/fumocommon.h
+++ b/source/fumoengine/fumocommon.h
@@ -40,7 +40,8 @@ typedef int_fast64_t    i64f;
 typedef u64 nsec;
 
 
-size_t min_usize(usize a, usize b);
+size_t min(usize a, usize b);
+size_t max(usize a, usize b);
 
 nsec TimeNow();
 double TimeNowD();
diff --git a/source/fumoengine/fumoengine.c b/source/fumoengine/fumoengine.c
index 0ed53bd..d2e0863 100644
--- a/source/fumoengine/fumoengine.c
+++ b/source/fumoengine/fumoengine.c
@@ -2,16 +2,35 @@
 #include "platform.h"
 
 
-const VectorT FUMOCO_T = VECTOR_T(struct FumoCoroutine);
-
-
 void Panic(char *message)
 {
     printf(message);
     exit(1);
 }
 
-bool CreateFumoInstance(struct FumoInstance *instance)
+bool CoroutineAdd(struct Instance *inst, void *state, coroutine_handler callback)
+{
+    return VectorAdd(&inst->coroutines, &(struct Coroutine) {
+        .callback = callback,
+        .state = state,
+        .next_scheduled = inst->time
+    });
+}
+
+void CoroutineTryInvoke(struct Instance *inst, struct Coroutine *co)
+{
+    while (inst->time > co->next_scheduled) {
+        nsec wait = co->callback(inst, co->state);
+        if (wait == 0) {
+            co->next_scheduled = inst->time;
+            break;
+        } else {
+            co->next_scheduled += wait;
+        }
+    }
+}
+
+bool CreateFumoInstance(struct Instance *instance)
 {
     if (!PlatformInit())
         Panic("Platform failed to initialize");
@@ -22,27 +41,27 @@ bool CreateFumoInstance(struct FumoInstance *instance)
     if (!CreateInputThread(&instance->input_hand))
         Panic("Input handle failed to initialize");
 
-    if (!CreateTerminal(&instance->term, 20, 10))
-        Panic("Out of memory");
-
     if (!CreateEvent(&instance->on_start))
         Panic("Out of memory");
 
     if (!CreateEvent(&instance->on_update))
         Panic("Out of memory");
 
+    if (!CreateEvent(&instance->on_draw))
+        Panic("Out of memory");
+
+    if (!CreateVector(&instance->coroutines, sizeof(struct Coroutine)))
+        Panic("Out of memory");
+
     instance->time = TimeNow();
 
     return true;
 }
 
-bool FumoInstanceRun(struct FumoInstance *inst)
+bool FumoInstanceRun(struct Instance *inst)
 {
     EventInvoke(&inst->on_start, inst);
 
-    usize buf_n = TerminalMaxOut(&inst->term);
-    char *buf = malloc(buf_n);
-
     while (true) {
         // Time
         nsec now = TimeNow();
@@ -57,28 +76,17 @@ bool FumoInstanceRun(struct FumoInstance *inst)
 
         if (!InputRelease(&inst->input_hand))
             Panic("Release failed");
-        
+
         // Update
         EventInvoke(&inst->on_update, inst);
+
         for (usize i = 0; i < inst->coroutines.len; i++) {
-            struct FumoCoroutine *co = VectorGet(FUMOCO_T, &inst->coroutines, i);
-            co->callback();
+            CoroutineTryInvoke(inst, VectorGet(&inst->coroutines, i));
         }
 
         // Draw
         EventInvoke(&inst->on_draw, inst);
-        TerminalPrint(&inst->term, buf, buf_n);
-        puts(buf);
 
         //_sleep(100);
     }
-}
-
-bool CoroutineAdd(struct FumoInstance *inst, handler callback, nsec period)
-{
-    return VectorAdd(FUMOCO_T, &inst->coroutines, &(struct FumoCoroutine) {
-        .callback = callback,
-        .timer = 0,
-        .period = period
-    });
 }
\ No newline at end of file
diff --git a/source/fumoengine/fumoengine.h b/source/fumoengine/fumoengine.h
index 0b277ae..4e5f0ba 100644
--- a/source/fumoengine/fumoengine.h
+++ b/source/fumoengine/fumoengine.h
@@ -3,20 +3,21 @@
 #include "event.h"
 #include "fumocommon.h"
 #include "input.h"
-#include "terminal.h"
 #include "vector.h"
 
 
-struct FumoCoroutine {
-    handler callback;
-    nsec timer;
-    nsec period;
+typedef nsec (*coroutine_handler)(void *state, void *instance);
+
+
+struct Coroutine {
+    coroutine_handler callback;
+    void *state;
+    nsec next_scheduled;
 };
 
-struct FumoInstance {
+struct Instance {
     struct Controller ctrl;
     struct InputHandle input_hand;
-    struct Terminal term;
 
     struct Event on_start;
     struct Event on_update;
@@ -31,6 +32,10 @@ struct FumoInstance {
 
 void Panic(char *message);
 
-bool CreateFumoInstance(struct FumoInstance *game);
+bool CoroutineAdd(struct Instance *inst, void *state, coroutine_handler callback);
 
-bool FumoInstanceRun(struct FumoInstance *game);
\ No newline at end of file
+void CoroutineTryInvoke(struct Instance *inst, struct Coroutine *co);
+
+bool CreateFumoInstance(struct Instance *game);
+
+bool FumoInstanceRun(struct Instance *game);
\ No newline at end of file
diff --git a/source/fumoengine/include/dictionary.c b/source/fumoengine/include/dictionary.c
index 2e69e08..f4ab940 100644
--- a/source/fumoengine/include/dictionary.c
+++ b/source/fumoengine/include/dictionary.c
@@ -1,21 +1,24 @@
 #include "dictionary.h"
+#include <stdalign.h>
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
 
 
-bool CreateDictionary(DictT T, struct Dictionary *dict)
+bool CreateDictionary(struct Dictionary *dict, usize value_size)
 {
-    void *bkts = calloc(16, T->BKT_SIZE);
+    void *bkts = calloc(16, value_size);
 
     if (bkts == nullptr)
         return false;
 
-    *dict = (struct Dictionary) {
-        .filled = 0,
-        .capacity = 16,
-        .bkts = bkts
-    };
+    dict->value_size = value_size;
+    dict->value_offset = max(alignof(u32), alignof(u8[dict->value_size]));
+    dict->bkt_size = dict->value_offset + value_size;
+
+    dict->filled = 0;
+    dict->capacity = 16;
+    dict->bkts = bkts;
 
     return true;
 }
@@ -25,45 +28,45 @@ void FreeDictionary(struct Dictionary *dict)
     free(dict->bkts);
 }
 
-void *index_bkt(DictT T, struct Dictionary *dict, usize i)
+void *index_bkt(struct Dictionary *dict, usize i)
 {
-    return (u8 *)dict->bkts + i * T->BKT_SIZE;
+    return (u8 *)dict->bkts + i * dict->bkt_size;
 }
 
-u32 *get_key(DictT T, void *bkt)
+u32 *get_key(struct Dictionary *dict, void *bkt)
 {
     return (u32 *)bkt;
 }
 
-void *get_val(DictT T, void *bkt)
+void *get_value_ptr(struct Dictionary *dict, void *bkt)
 {
-    return (u8 *)bkt + T->VAL_OFS;
+    return (u8 *)bkt + dict->value_offset;
 }
 
-void set_bkt(DictT T, void *bkt, u32 key, void *val)
+void set_bkt(struct Dictionary *dict, void *bkt, u32 key, void *value_ptr)
 {
-    *get_key(T, bkt) = key;
-    memcpy(get_val(T, bkt), val, T->VAL_SIZE);
+    *get_key(dict, bkt) = key;
+    memcpy(get_value_ptr(dict, bkt), value_ptr, dict->value_size);
 }
 
-void *probe_bkt(DictT T, struct Dictionary *dict, usize index, u32 key)
+void *probe_bkt(struct Dictionary *dict, usize index, u32 key)
 {
     for (usize i = 0; i < dict->capacity; i++) {
-        void *bkt = index_bkt(T, dict, (index + i) % dict->capacity);
+        void *bkt = index_bkt(dict, (index + i) % dict->capacity);
 
-        if (*get_key(T, bkt) == key)
+        if (*get_key(dict, bkt) == key)
             return bkt;
     }
 
     return nullptr;
 }
 
-void *probe_empty_bkt(DictT T, struct Dictionary *dict, usize index, u32 key)
+void *probe_empty_bkt(struct Dictionary *dict, usize index, u32 key)
 {
     for (usize i = 0; i < dict->capacity; i++) {
-        void *bkt = index_bkt(T, dict, (index + i) % dict->capacity);
+        void *bkt = index_bkt(dict, (index + i) % dict->capacity);
 
-        u32 k = *get_key(T, bkt);
+        u32 k = *get_key(dict, bkt);
         if (k == 0 or k == key)
             return bkt;
     }
@@ -71,25 +74,25 @@ void *probe_empty_bkt(DictT T, struct Dictionary *dict, usize index, u32 key)
     return nullptr;
 }
 
-void *DictionaryFind(DictT T, struct Dictionary *dict, u32 key)
+void *DictionaryFind(struct Dictionary *dict, u32 key)
 {
     usize index = key % dict->capacity;
 
-    void *bkt = probe_bkt(T, dict, index, key);
+    void *bkt = probe_bkt(dict, index, key);
     if (bkt == nullptr)
         return false;
 
-    return get_val(T, bkt);
+    return get_value_ptr(dict, bkt);
 }
 
-void *DictionarySet(DictT T, struct Dictionary *dict, u32 key, void *val)
+void *DictionarySet(struct Dictionary *dict, u32 key, void *value_ptr)
 {
     usize index = key % dict->capacity;
 
-    void *bkt = probe_empty_bkt(T, dict, index, key);
+    void *bkt = probe_empty_bkt(dict, index, key);
 
-    if (*get_key(T, bkt) == 0) 
-        set_bkt(T, bkt, key, val);
+    if (*get_key(dict, bkt) == 0) 
+        set_bkt(dict, bkt, key, value_ptr);
 
     return bkt;
 }
\ No newline at end of file
diff --git a/source/fumoengine/include/dictionary.h b/source/fumoengine/include/dictionary.h
index d2e547d..1c12cb2 100644
--- a/source/fumoengine/include/dictionary.h
+++ b/source/fumoengine/include/dictionary.h
@@ -1,31 +1,21 @@
 #pragma once
 #include "fumocommon.h"
 
-#define DICT_T(DICT_VAL_T) \
-    (&(struct DictT) { \
-        .VAL_SIZE = sizeof(DICT_VAL_T), \
-        .VAL_OFS = offsetof(struct { u32 k; DICT_VAL_T v; }, v), \
-        .BKT_SIZE = sizeof(struct { u32 k; DICT_VAL_T v; }) \
-    }) \
-
-
-typedef const struct DictT {
-    usize VAL_SIZE;
-    usize VAL_OFS;
-    usize BKT_SIZE;
-} *const DictT;
 
 struct Dictionary {
+    usize value_size;
+    usize value_offset;
+    usize bkt_size;
+
     usize filled;
     usize capacity;
     void *bkts;
 };
 
-
-bool CreateDictionary(DictT T, struct Dictionary *dict);
+bool CreateDictionary(struct Dictionary *dict, usize value_size);
 
 void FreeDictionary(struct Dictionary *dict);
 
-void *DictionaryFind(DictT T, struct Dictionary *dict, u32 key);
+void *DictionaryFind(struct Dictionary *dict, u32 key);
 
-void *DictionarySet(DictT T, struct Dictionary *dict, u32 key, void *val);
\ No newline at end of file
+void *DictionarySet(struct Dictionary *dict, u32 key, void *value_ptr);
\ No newline at end of file
diff --git a/source/fumoengine/include/event.c b/source/fumoengine/include/event.c
index 8814345..f28b710 100644
--- a/source/fumoengine/include/event.c
+++ b/source/fumoengine/include/event.c
@@ -22,7 +22,7 @@ void FreeEvent(struct Event *event)
     free(event->methods);
 }
 
-bool EventAdd(struct Event *event, handler callback, void *instance)
+bool EventAdd(struct Event *event, void *instance, handler callback)
 {
     if (event->len == event->capacity) {
         usize new_size = event->capacity * 2 * sizeof(struct Method);
diff --git a/source/fumoengine/include/event.h b/source/fumoengine/include/event.h
index bb25b41..637ca77 100644
--- a/source/fumoengine/include/event.h
+++ b/source/fumoengine/include/event.h
@@ -21,6 +21,6 @@ struct Event {
 
 bool CreateEvent(struct Event *event);
 
-bool EventAdd(struct Event *event, handler callback, void *instance);
+bool EventAdd(struct Event *event, void *instance, handler callback);
 
 void EventInvoke(struct Event *event, void *state);
\ No newline at end of file
diff --git a/source/fumoengine/include/ringbuffer.c b/source/fumoengine/include/ringbuffer.c
index 6e6c16a..751699f 100644
--- a/source/fumoengine/include/ringbuffer.c
+++ b/source/fumoengine/include/ringbuffer.c
@@ -37,7 +37,7 @@ void RingBufferTransfer(
     struct RingBufferHead *dest,
     struct RingBufferHead *tmp
 ) {
-    usize copy_max = min_usize(T->LEN - dest->len, tmp->len);
+    usize copy_max = min(T->LEN - dest->len, tmp->len);
 
     for (usize i = 0; i < copy_max; i++) {
         void *to = RingBufferGet(T, dest, dest->len + i);
@@ -55,7 +55,7 @@ usize RingBufferOut(
     void *dest,
     struct RingBufferHead *src
 ) {
-    usize copy_max = min_usize(n, src->len);
+    usize copy_max = min(n, src->len);
 
     for (usize i = 0; i < copy_max; i++) {
         void *to = (u8 *)dest + i * T->SIZE;
diff --git a/source/fumoengine/include/vector.c b/source/fumoengine/include/vector.c
index 19e1db7..fb766f7 100644
--- a/source/fumoengine/include/vector.c
+++ b/source/fumoengine/include/vector.c
@@ -3,13 +3,15 @@
 #include <string.h>
 
 
-bool CreateVector(VectorT T, struct Vector *vec)
+bool CreateVector(struct Vector *vec, usize value_size)
 {
-    void *array = malloc(16 * T->SIZE);
+    void *array = malloc(16 * value_size);
 
     if (array == nullptr)
         return false;
 
+    vec->value_size = value_size;
+
     vec->len = 0;
     vec->capacity = 16;
     vec->array = array;
@@ -22,16 +24,16 @@ void FreeVector(struct Vector *vec)
     free(vec->array);
 }
 
-void *VectorGet(VectorT T, struct Vector *vec, usize i)
+void *VectorGet(struct Vector *vec, usize i)
 {
-    return (u8 *)vec->array + i * T->SIZE;
+    return (u8 *)vec->array + i * vec->value_size;
 }
 
-bool VectorAdd(VectorT T, struct Vector *vec, void *item)
+bool VectorAdd(struct Vector *vec, void *item)
 {
     if (vec->len == vec->capacity) {
         usize new_capacity = vec->capacity * 2;
-        void *new_array = realloc(vec->array, new_capacity * T->SIZE);
+        void *new_array = realloc(vec->array, new_capacity * vec->value_size);
 
         if (new_array == nullptr)
             return false;
@@ -39,7 +41,7 @@ bool VectorAdd(VectorT T, struct Vector *vec, void *item)
         vec->capacity = new_capacity;
     }
 
-    memcpy(VectorGet(T, vec, vec->len++), item, T->SIZE);
+    memcpy(VectorGet(vec, vec->len++), item, vec->value_size);
 
     return true;
 }
\ No newline at end of file
diff --git a/source/fumoengine/include/vector.h b/source/fumoengine/include/vector.h
index 8610531..2f7c5fd 100644
--- a/source/fumoengine/include/vector.h
+++ b/source/fumoengine/include/vector.h
@@ -1,26 +1,19 @@
 #include "fumocommon.h"
 
-#define VECTOR_T(VEC_ITEM_T) \
-    (&(struct VectorT) { \
-        .SIZE = sizeof(VEC_ITEM_T) \
-    }) \
-
-
-typedef const struct VectorT {
-    usize SIZE;
-} *const VectorT;
 
 struct Vector {
+    usize value_size;
+
     usize len;
     usize capacity;
     void *array;
 };
 
 
-bool CreateVector(VectorT T, struct Vector *vec);
+bool CreateVector(struct Vector *vec, usize value_size);
 
 void FreeVector(struct Vector *vec);
 
-void *VectorGet(VectorT T, struct Vector *vec, usize i);
+void *VectorGet(struct Vector *vec, usize i);
 
-bool VectorAdd(VectorT T, struct Vector *vec, void *item);
\ No newline at end of file
+bool VectorAdd(struct Vector *vec, void *item);
\ No newline at end of file
diff --git a/source/fumoengine/input/ctrl.c b/source/fumoengine/input/ctrl.c
index fba729f..5b19a80 100644
--- a/source/fumoengine/input/ctrl.c
+++ b/source/fumoengine/input/ctrl.c
@@ -4,16 +4,13 @@
 #define INIT_SIZE 16
 
 
-DictT BIND_T = DICT_T(struct InputAxis *);
-
-
 bool CreateController(struct Controller *ctrl)
 {
     struct InputAxis *axes = calloc(16, sizeof(struct InputAxis));
     if (axes == nullptr)
         return false;
 
-    if (!CreateDictionary(BIND_T, &ctrl->binds))
+    if (!CreateDictionary(&ctrl->binds, sizeof(struct InputAxis*)))
         return false;
 
     ctrl->pending_len = 0;
@@ -39,7 +36,7 @@ bool ControllerBind(struct Controller *ctrl, u16 control, u16 code, u16 type)
     u32 hash = hash_bind(code, type);
 
     struct InputAxis *axis = &ctrl->axes[control];
-    struct InputAxis **bind = DictionarySet(BIND_T, &ctrl->binds, hash, &axis);
+    struct InputAxis **bind = DictionarySet(&ctrl->binds, hash, &axis);
     
     if (bind == nullptr)
         return false;
@@ -92,7 +89,7 @@ void ControllerPoll(struct Controller *ctrl, struct RecordBuffer *recs)
         struct InputRecord *rec = recs->buf + i;
         
         u32 hash = hash_bind(rec->code, rec->type);
-        struct InputAxis **axis = DictionaryFind(BIND_T, &ctrl->binds, hash);
+        struct InputAxis **axis = DictionaryFind(&ctrl->binds, hash);
 
         if (axis == nullptr)
             continue;
@@ -102,44 +99,4 @@ void ControllerPoll(struct Controller *ctrl, struct RecordBuffer *recs)
     }
 
     recs->head.len = 0;
-}
-
-/*int main() 
-{
-    struct Controller ctrl;
-    if (!CreateController(&ctrl))
-        return 1;
-
-    ControllerMap(&ctrl, 123, 111, BUTTON);
-    ControllerMap(&ctrl, 0, 8, BUTTON);
-    
-    struct RecordBuffer recs = { .head.len = 0, .head.start = 0 };
-
-    recs.buf[recs.head.len++] = (struct InputRecord) {
-        .but.value = 69,
-
-        .is_down = true,
-
-        .id.bind = 111,
-        .id.type = BUTTON
-    };
-    recs.buf[recs.head.len++] = (struct InputRecord) {
-        .but.value = 1000,
-        
-        .is_down = true,
-
-        .id.bind = 8,
-        .id.type = BUTTON
-    };
-
-    ControllerPoll(&ctrl, &recs);
-
-    struct InputAxis *a = ControllerGet(&ctrl, 123, BUTTON);
-    printf("%u\n", a->but.value);
-    
-    struct InputAxis *b = ControllerGet(&ctrl, 0, BUTTON);
-    printf("%u\n", b->but.value);
-
-    printf("success");
-    return 0;
-}*/
\ No newline at end of file
+}
\ No newline at end of file
diff --git a/source/fumoengine/terminal/terminal.c b/source/fumoengine/terminal/terminal.c
index 3ae0e8b..7967f02 100644
--- a/source/fumoengine/terminal/terminal.c
+++ b/source/fumoengine/terminal/terminal.c
@@ -5,26 +5,30 @@
 #define MAX_CH4_LEN 11
 
 
-usize TerminalMaxOut(struct Terminal *term)
+usize TerminalMaxOut(usize wid, usize hgt)
 {
     return RESET_STR_LEN
-        + MAX_CH4_LEN * term->wid * term->hgt
-        + term->hgt
+        + MAX_CH4_LEN * wid * hgt
+        + hgt
         + 1;
 }
 
 bool CreateTerminal(struct Terminal *term, usize wid, usize hgt)
 {
     struct Char4 *ch4s = calloc(wid * hgt, sizeof(struct Char4));
-    
     if (ch4s == nullptr)
         return false;
 
-    *term = (struct Terminal) {
-        .wid = wid,
-        .hgt = hgt,
+    char *str = malloc(TerminalMaxOut(wid, hgt));
+    if (str == nullptr)
+        return false;
 
-        .buf = ch4s
+    *term = (struct Terminal) {
+        .buf = ch4s,
+        .str = str,
+
+        .wid = wid,
+        .hgt = hgt       
     };
 
     return true;
@@ -107,12 +111,12 @@ usize ch4_dif_to_str(char *out, struct Color4 *dif, struct Char4 *ch4)
     return len;
 }
 
-usize TerminalPrint(struct Terminal *term, char *out, usize n)
+usize TerminalPrint(struct Terminal *term)
 {
     struct Color4 dif = { 0, 0 };
 
     usize len = 7;
-    memcpy(out, "\x1b[H\x1b[0m", 7);
+    memcpy(term->str, "\x1b[H\x1b[0m", 7);
 
     usize i = 0;
     for (usize y = 0; y < term->hgt; y++) {
@@ -124,11 +128,11 @@ usize TerminalPrint(struct Terminal *term, char *out, usize n)
             ch4->ch = '#';
         // DEBUG
 
-        len += ch4_dif_to_str(out + len, &dif, ch4);
+        len += ch4_dif_to_str(term->str + len, &dif, ch4);
     }
-        out[len++] = '\n';
+        term->str[len++] = '\n';
     }
 
-    out[len] = 0;
+    term->str[len] = 0;
     return len;
 }
\ No newline at end of file
diff --git a/source/fumoengine/terminal/terminal.h b/source/fumoengine/terminal/terminal.h
index c3af9a0..c965bf5 100644
--- a/source/fumoengine/terminal/terminal.h
+++ b/source/fumoengine/terminal/terminal.h
@@ -1,10 +1,6 @@
 #pragma once
-#include <iso646.h>
-#include <stdbool.h>
-#include <stdint.h>
 #include <stdio.h>
 #include <stdlib.h>
-
 #include "fumocommon.h"
 
 
@@ -19,16 +15,18 @@ struct Char4 {
 };
 
 struct Terminal {
+    struct Char4 *buf;
+    char *str;
+
     usize wid;
     usize hgt;
     
-    struct Char4 *buf;
 };
 
-usize TerminalMaxOut(struct Terminal *term);
+usize TerminalMaxOut(usize wid, usize hgt);
 
 bool CreateTerminal(struct Terminal *term, usize wid, usize hgt);
 
 void FreeTerminal(struct Terminal *term);
 
-usize TerminalPrint(struct Terminal *term, char *out, usize n);
\ No newline at end of file
+usize TerminalPrint(struct Terminal *term);
\ No newline at end of file
diff --git a/source/fumotris/fumotris.c b/source/fumotris/fumotris.c
index 498641e..290c557 100644
--- a/source/fumotris/fumotris.c
+++ b/source/fumotris/fumotris.c
@@ -3,99 +3,143 @@
 
 
 struct Fumotris {
+    struct Terminal term;
+
+    struct TetraTemplate *bag[7];
+    usize bag_i;
+
     struct Tetra board;
     struct Tetra piece;
 
     bool is_ground;
+
+    nsec last_moved;
+    nsec last_dropped;
 };
 
-
-struct TetraTemplate *bag[7] = { &I, &O, &T, &S, &Z, &J, &L };
-usize bag_i = 0;
-
-
-void shuffle()
+void shuffle(struct Fumotris *fumo)
 {
-    for (usize i = 6; i >= 0; i--) {
+    for (usize i = 6; i > 0; i--) {
         usize swap = rand() % i;
         
-        struct TetraTemplate *tmp = bag[swap];
-        bag[swap] = bag[i];
-        bag[i] = tmp;
+        struct TetraTemplate *tmp = fumo->bag[swap];
+        fumo->bag[swap] = fumo->bag[i];
+        fumo->bag[i] = tmp;
     }
 }
 
-void place_piece(struct Fumotris *fumo)
+void check_clear()
+{
+    
+}
+
+void place(struct Fumotris *fumo)
 {
     TetraOverlay(&fumo->piece, &fumo->board);
-    SetTetra(&fumo->piece, bag[bag_i++], 0, 0);
 
-    if (bag_i == 7) {
-        shuffle();
-        bag_i = 0;
+    usize lines_cleared = fumo->piece.hgt;
+
+    for (usize y = fumo->piece.y; y < fumo->piece.y + fumo->piece.hgt; y++) {
+        for (usize x = 0; x < fumo->board.wid; x++) {
+            if (fumo->board.blks[fumo->board.wid * y + x] == 0) {
+                lines_cleared -= 1;
+                break;
+            }
+        }
     }
+
+    TetraSet(&fumo->piece, fumo->bag[fumo->bag_i++]);
+
+    if (fumo->bag_i == 7) {
+        shuffle(fumo);
+        fumo->bag_i = 0;
+    }
+
 }
 
 i16 get_horizontal(struct Controller *ctrl)
 {
-    return (-(i16)ctrl->axes[LEFT].is_down) + ctrl->axes[RIGHT].is_down;
+    return (-(i16)ctrl->axes[LEFT].is_held) + ctrl->axes[RIGHT].is_held;
 }
 
-void FumotrisStart(struct FumoInstance *inst, struct Fumotris *fumo)
+void FumotrisStart(struct Instance *inst, struct Fumotris *fumo)
 {
-    ControllerBindMulti(&inst->ctrl, BINDS_N, controls_g, codes_g, types_g);
-    CreateTetra(&fumo->board, 10, 10);
+    ControllerBindMulti(&inst->ctrl, BINDS_N, CONTROLS, CODES, TYPES);
 
+    CreateTerminal(&fumo->term, 20, 20);
 
+    for (usize i = 0; i < 7; i++) 
+        fumo->bag[i] = templates[i];
+    fumo->bag_i = 1;
+
+    CreateTetra(&fumo->board, 10, 20);
+    TetraSet(&fumo->piece, fumo->bag[0]);
 
     fumo->is_ground = false;
-
-    SetTetra(&fumo->piece, bag[bag_i++], 0, 0);
+    fumo->last_moved = 0;
+    fumo->last_dropped = 0;
 }
 
-void FumotrisUpdate(struct FumoInstance *inst, struct Fumotris *fumo)
+void FumotrisUpdate(struct Instance *inst, struct Fumotris *fumo)
 {
-    TetraMove(&fumo->piece, &fumo->board, get_horizontal(&inst->ctrl), 0);
+    i16 horizontal = get_horizontal(&inst->ctrl);
 
-    if (inst->ctrl.axes[SOFT_DROP].is_down) {
+    if (horizontal != 0 and fumo->last_moved < inst->time) {
+        fumo->last_moved = inst->time + 5e7;
+        TetraMove(&fumo->piece, &fumo->board, horizontal, 0);
+    }
+
+    if (inst->ctrl.axes[ROTATE_CCW].is_down)
+        TetraRotate(&fumo->piece, &fumo->board, 1);
+
+    if (inst->ctrl.axes[ROTATE_CW].is_down)
+        TetraRotate(&fumo->piece, &fumo->board, -1);
+
+    if (inst->ctrl.axes[SOFT_DROP].is_held and fumo->last_dropped < inst->time) {
+        fumo->last_dropped = inst->time + 5e7;
         TetraMove(&fumo->piece, &fumo->board, 0, 1);
     }
         
     if (inst->ctrl.axes[HARD_DROP].is_down) {
         while (TetraMove(&fumo->piece, &fumo->board, 0, 1));
-        place_piece(fumo);
+        place(fumo);
     }
 }
 
-void FumotrisOnFall(struct FumoInstance *inst, struct Fumotris *fumo)
+nsec FumotrisFall(struct Instance *inst, struct Fumotris *fumo)
 {
     if (!TetraMove(&fumo->piece, &fumo->board, 0, 1)) {
         if (!fumo->is_ground)
             fumo->is_ground = true;
         else
-            place_piece(fumo);
+            place(fumo);
     }
+
+    return 5e8;
 }
 
-void FumotrisDraw(struct FumoInstance *inst, struct Fumotris *fumo)
+void FumotrisDraw(struct Instance *inst, struct Fumotris *fumo)
 {
-    TetraTerminalClear(&fumo->board, &inst->term);
-    TetraTerminalDraw(&fumo->board, &inst->term);
-    TetraTerminalDraw(&fumo->piece, &inst->term);
+    TetraTerminalClear(&fumo->board, &fumo->term);
+    TetraTerminalDraw(&fumo->board, &fumo->term);
+    TetraTerminalDraw(&fumo->piece, &fumo->term);
+
+    TerminalPrint(&fumo->term);
+    puts(fumo->term.str);
 }
 
 int main()
 {
-    struct FumoInstance inst;
+    struct Instance inst;
     CreateFumoInstance(&inst);
     
     struct Fumotris game;
     
-    EventAdd(&inst.on_start, FumotrisStart, &game);
-    EventAdd(&inst.on_update, FumotrisUpdate, &game);
-    EventAdd(&inst.on_draw, FumotrisDraw, &game);
+    EventAdd(&inst.on_start, &game, FumotrisStart);
+    EventAdd(&inst.on_update, &game, FumotrisUpdate);
+    EventAdd(&inst.on_draw, &game, FumotrisDraw);
 
-    VectorAdd(FUMOCO_T, &inst.coroutines, );
+    CoroutineAdd(&inst, &game, FumotrisFall);
 
     FumoInstanceRun(&inst);
 
diff --git a/source/fumotris/fumotris.h b/source/fumotris/fumotris.h
index 3aa2b06..8d8db95 100644
--- a/source/fumotris/fumotris.h
+++ b/source/fumotris/fumotris.h
@@ -1,5 +1,6 @@
 #include "fumocommon.h"
 #include "fumoengine.h"
+#include "terminal.h"
 #include "tetra.h"
 
 #define BINDS_N 12
@@ -23,7 +24,7 @@ enum FumotrisControls {
 };
 
 
-u16 controls_g[BINDS_N] = {
+u16 CONTROLS[BINDS_N] = {
     LEFT,
     RIGHT,
     SOFT_DROP,
@@ -40,7 +41,7 @@ u16 controls_g[BINDS_N] = {
     MOUSE,
 };
 
-u16 codes_g[BINDS_N] = {
+u16 CODES[BINDS_N] = {
     0x25,
     0x27,
     0x28,
@@ -57,7 +58,7 @@ u16 codes_g[BINDS_N] = {
     0
 };
 
-u16 types_g[BINDS_N] = {
+u16 TYPES[BINDS_N] = {
     BUTTON,
     BUTTON,
     BUTTON,
@@ -75,7 +76,7 @@ u16 types_g[BINDS_N] = {
 };
 
 struct TetraTemplate I = {
-    .blks = &(u8) {
+    .blks = (u8[16]) {
         0, 0, 0, 0,
         0, 0, 0, 0,
         1, 1, 1, 1,
@@ -86,18 +87,18 @@ struct TetraTemplate I = {
 };
 
 struct TetraTemplate O = {
-    .blks = &(u8) {
-        1, 1,
-        1, 1
+    .blks = (u8[4]) {
+        2, 2,
+        2, 2
     },
     .wid = 2,
     .hgt = 2
 };
 
 struct TetraTemplate T = {
-    .blks = &(u8) {
-        0, 1, 0,
-        1, 1, 1,
+    .blks = (u8[9]) {
+        0, 3, 0,
+        3, 3, 3,
         0, 0, 0
     },
     .wid = 3,
@@ -105,9 +106,9 @@ struct TetraTemplate T = {
 };
 
 struct TetraTemplate S = {
-    .blks = &(u8) {
-        0, 1, 1,
-        1, 1, 0,
+    .blks = (u8[9]) {
+        0, 4, 4,
+        4, 4, 0,
         0, 0, 0
     },
     .wid = 3,
@@ -115,9 +116,9 @@ struct TetraTemplate S = {
 };
 
 struct TetraTemplate Z = {
-    .blks = &(u8) {
-        1, 1, 0,
-        0, 1, 1,
+    .blks = (u8[9]) {
+        5, 5, 0,
+        0, 5, 5,
         0, 0, 0
     },
     .wid = 3,
@@ -125,9 +126,9 @@ struct TetraTemplate Z = {
 };
 
 struct TetraTemplate J = {
-    .blks = &(u8) {
-        1, 0, 0,
-        1, 1, 1,
+    .blks = (u8[9]) {
+        6, 0, 0,
+        6, 6, 6,
         0, 0, 0
     },
     .wid = 3,
@@ -135,11 +136,13 @@ struct TetraTemplate J = {
 };
 
 struct TetraTemplate L = {
-    .blks = &(u8) {
-        0, 0, 1,
-        1, 1, 1,
+    .blks = (u8[9]) {
+        0, 0, 7,
+        7, 7, 7,
         0, 0, 0
     },
     .wid = 3,
     .hgt = 3
-};
\ No newline at end of file
+};
+
+struct TetraTemplate *templates[7] = { &I, &O, &T, &S, &Z, &J, &L };
\ No newline at end of file
diff --git a/source/fumotris/tetra.c b/source/fumotris/tetra.c
index 890cf1f..c0a7f57 100644
--- a/source/fumotris/tetra.c
+++ b/source/fumotris/tetra.c
@@ -1,20 +1,24 @@
 #include "tetra.h"
 
 
-bool CreateTetra(struct Tetra *map, u16 wid, u16 hgt)
+bool CreateTetra(struct Tetra *tetra, u16 wid, u16 hgt)
 {
     u8 *blks = calloc(wid * hgt, sizeof(u8));
     
     if (blks == nullptr)
         return false;
 
-    map->blks = blks;
-    map->wid = wid;
-    map->hgt = hgt;
+    *tetra = (struct Tetra) {
+        .blks = blks,
 
-    map->x = 0;
-    map->y = 0;
-    map->rot = 0;
+        .wid = wid,
+        .hgt = hgt,
+
+        .x = 0,
+        .y = 0,
+
+        .rot = 0
+    };
 
     return true;
 }
@@ -24,37 +28,45 @@ void FreeTetra(struct Tetra *tetra)
     free(tetra->blks);
 }
 
-void SetTetra(struct Tetra *map, struct TetraTemplate *t, i16 x, i16 y)
+void TetraSet(struct Tetra *tetra, struct TetraTemplate *template)
 {
-    map->blks = t->blks;
-    map->wid = t->wid;
-    map->hgt = t->hgt;
+    tetra->blks = template->blks;
+    tetra->wid = template->wid;
+    tetra->hgt = template->hgt;
+
+    tetra->x = 0;
+    tetra->y = 0;
+    tetra->rot = 0;
+}
+
+usize rotate_index(usize i, usize wid, u8 rot)
+{
+    if(rot == 0)
+        return i;
+
+    usize row = i / wid;
+    usize col = i % wid;
     
-    map->x = x;
-    map->y = y;
-    map->rot = 0;
+    switch (rot) {
+    case 1:
+        return (wid - col - 1) * wid + row;
+    case 2:
+        return (wid - row - 1) * wid + (wid - col - 1);
+    case 3:
+        return col * wid + (wid - row - 1);
+    }
+    
+    return 0;
 }
 
-bool TetraMove(struct Tetra *piece, struct Tetra *board, i16 dx, i16 dy)
+bool TetraIsCollision(struct Tetra *t, struct Tetra *board)
 {
-    if (TetraIsCollision(piece, board, dx, dy))
-        return false;
-
-    piece->x += dx;
-    piece->y += dy;
-
-    return true;
-}
-
-bool TetraIsCollision(struct Tetra *piece, struct Tetra *board, i16 dx, i16 dy)
-{
-    i16 x_start = piece->x + dx;
-    i16 y_start = piece->y + dy;
-
     usize i = 0;
-    for (i16 y = y_start; y < y_start + piece->hgt; y++) {
-    for (i16 x = x_start; x < x_start + piece->wid; x++, i++) {
-        if(piece->blks[i] == 0)
+    for (i16 y = t->y; y < t->y + t->hgt; y++) {
+    for (i16 x = t->x; x < t->x + t->wid; x++, i++) {
+        usize rot_i = rotate_index(i, t->wid, t->rot);
+
+        if(t->blks[rot_i] == 0)
             continue;
 
         if(x < 0 or x >= board->wid or y < 0 or y >= board->hgt)
@@ -68,6 +80,53 @@ bool TetraIsCollision(struct Tetra *piece, struct Tetra *board, i16 dx, i16 dy)
     return false;
 }
 
+bool TetraMove(struct Tetra *t, struct Tetra *board, i16 dx, i16 dy)
+{
+    t->x += dx;
+    t->y += dy;
+
+    if (TetraIsCollision(t, board)) {
+        t->x -= dx;
+        t->y -= dy;
+
+        return false;
+    }
+
+    return true;
+}
+
+bool TetraRotate(struct Tetra *t, struct Tetra *board, i8 dr)
+{
+    u8 rot = t->rot;
+    t->rot = (t->rot + 4 + dr) % 4;
+
+    if (TetraIsCollision(t, board)) {
+        t->rot = rot;
+
+        return false;
+    }
+
+    return true;
+}
+
+void TetraOverlay(struct Tetra *t, struct Tetra *board)
+{
+    usize i = 0;
+    for (i16 y = t->y; y < t->y + t->hgt; y++) {
+    for (i16 x = t->x; x < t->x + t->wid; x++, i++) {
+        usize rot_i = rotate_index(i, t->wid, t->rot);
+
+        if(t->blks[rot_i] == 0)
+            continue;
+
+        if(x < 0 or x >= board->wid or y < 0 or y >= board->hgt)
+            continue;
+
+        board->blks[board->wid * y + x] = t->blks[rot_i];
+    }
+    }
+}
+
 void TetraTerminalClear(struct Tetra *board, struct Terminal *term)
 {
     for (usize i = 0; i < board->wid * board->hgt; i++) {
@@ -78,38 +137,24 @@ void TetraTerminalClear(struct Tetra *board, struct Terminal *term)
     }
 }
 
-void TetraTerminalDraw(struct Tetra *tetra, struct Terminal *term)
+void TetraTerminalDraw(struct Tetra *t, struct Terminal *term)
 {
     static const u8f blk_colors[8] = { 8, 14, 11, 13, 10, 9, 12, 3 };
 
     usize i = 0;
-    for (usize y = 0; y < tetra->hgt; y++) {
-    for (usize x = 0; x < tetra->wid; x++, i++) {
-        if (tetra->blks[i] == 0)
+    for (usize y = 0; y < t->hgt; y++) {
+    for (usize x = 0; x < t->wid; x++, i++) {
+        usize rot_i = rotate_index(i, t->wid, t->rot);
+
+        if (t->blks[rot_i] == 0)
             continue;
 
-        usize term_i = (y + tetra->y) * term->wid + (x + tetra->x) * 2;
+        usize term_i = (y + t->y) * term->wid + (x + t->x) * 2;
         struct Char4 *block = term->buf + term_i;
         
-        u8 fg = blk_colors[tetra->blks[i]];
+        u8 fg = blk_colors[t->blks[rot_i]];
         block[0] = (struct Char4) { .ch = '[', .color.fg = fg };
         block[1] = (struct Char4) { .ch = ']', .color.fg = fg };
     }
     }
-}
-
-void TetraOverlay(struct Tetra *piece, struct Tetra *board)
-{
-    usize i = 0;
-    for (usize y = piece->y; y < piece->y + piece->hgt; y++) {
-    for (usize x = piece->x; x < piece->x + piece->wid; x++, i++) {
-        if(piece->blks[i] == 0)
-            continue;
-
-        if(x < 0 or x >= board->wid or y < 0 or y >= board->hgt)
-            continue;
-
-        board->blks[board->wid * y + x] = piece->blks[i];
-    }
-    }
 }
\ No newline at end of file
diff --git a/source/fumotris/tetra.h b/source/fumotris/tetra.h
index f0838cc..1f6541c 100644
--- a/source/fumotris/tetra.h
+++ b/source/fumotris/tetra.h
@@ -4,38 +4,38 @@
 #include "terminal.h"
 
 
-struct Tetra {
+struct TetraTemplate {
     u8 *blks;
 
+    usize wid;
+    usize hgt;
+};
+
+struct Tetra {
+    u8 *blks;
+    
     u16 wid;
     u16 hgt;
 
     i16 x;
     i16 y;
-
-    u8f rot;
+    u8 rot;
 };
 
-struct TetraTemplate {
-    u8 *blks;
-    
-    u16 wid;
-    u16 hgt;
-};
+bool CreateTetra(struct Tetra *tetra, u16 wid, u16 hgt);
 
+void FreeTetra(struct Tetra *tetra);
 
-bool CreateTetra(struct Tetra *map, u16 wid, u16 hgt);
+void TetraSet(struct Tetra *tetra, struct TetraTemplate *template);
 
-void FreeTetra(struct Tetra *map);
+bool TetraIsCollision(struct Tetra *t, struct Tetra *board);
 
-void SetTetra(struct Tetra *map, struct TetraTemplate *t, i16 x, i16 y);
+bool TetraMove(struct Tetra *t, struct Tetra *board, i16 dx, i16 dy);
+
+bool TetraRotate(struct Tetra *t, struct Tetra *board, i8 dr);
+
+void TetraOverlay(struct Tetra *t, struct Tetra *board);
 
 void TetraTerminalClear(struct Tetra *board, struct Terminal *term);
 
-void TetraTerminalDraw(struct Tetra *map, struct Terminal *term);
-
-bool TetraMove(struct Tetra *piece, struct Tetra *board, i16 dx, i16 dy);
-
-bool TetraIsCollision(struct Tetra *piece, struct Tetra *board, i16 dx, i16 dy);
-
-void TetraOverlay(struct Tetra *piece, struct Tetra *board);
\ No newline at end of file
+void TetraTerminalDraw(struct Tetra *t, struct Terminal *term);
\ No newline at end of file