diff --git a/obj/maths.c.o b/obj/maths.c.o
index 633ee2c..e1d7802 100644
Binary files a/obj/maths.c.o and b/obj/maths.c.o differ
diff --git a/obj/wings.c.o b/obj/wings.c.o
index 5cbedda..4d31c64 100644
Binary files a/obj/wings.c.o and b/obj/wings.c.o differ
diff --git a/src/maths.c b/src/maths.c
index a20ed9d..65953ee 100644
--- a/src/maths.c
+++ b/src/maths.c
@@ -4,14 +4,15 @@
 
 float fcos(unsigned char x)
 {
+    char n = 1;
     float cos[4] = {1.0, 0.707106, 0.0, -0.707106};
 
     while(x >= 4)
     {
-        x-=4;
+        x -= 4;
+        n = -n;
     }
-
-    return cos[x];
+    return (n*cos[x]);
 }
 
 float fsin(unsigned char x)
diff --git a/src/wings.c b/src/wings.c
index ed08aa3..340cad8 100644
--- a/src/wings.c
+++ b/src/wings.c
@@ -9,8 +9,8 @@
 #include "stdio.h"
 #include "stdlib.h"
 
-#define SIZE_MAP_X 256
-#define SIZE_MAP_Y 256
+#define MAP_SIZE_X 256
+#define MAP_SIZE_Y 256
 
 #define MAX_PLANES 2
 
@@ -49,16 +49,6 @@ void init()
     }
 }
 
-void AI() // iA start
-{
-    unsigned char i;
-
-    for(i = 1; i < MAX_PLANES; i++)
-    {
-
-    }
-}
-
 void infos()
 {
     unsigned int key = 0;
@@ -112,34 +102,40 @@ int menu()
 void *update_frame()
 {
     static unsigned char i,j;
-    static short decalx = 0;
-    static short decaly = 0;
+    static char decalx = -1;
+    static char decaly = 0;
 
     dclear();
 
-    //dprint(1, 1, "s:%d l:%d", planes[0].reload, planes[0].life);
+    dprint(1, 1, "s:%d l:%d", planes[0].reload, planes[0].life);
+    dprint(1, 10, "(%d,%d)", decalx, decaly);
+
+    decalx = decaly = 0;
 
     switch(planes[0].dir)
     {
-        case 0 : decalx--; break;
-        case 1 : decalx--; decaly++; break;
-        case 2 : decaly++; break;
-        case 3 : decalx++; decaly++; break;
-        case 4 : decalx++; break;
-        case 5 : decalx++; decaly--; break;
-        case 6 : decaly--; break;
-        case 7 : decalx--; decaly--; break;
+        case 0 : decalx = -1; break;
+        case 1 : decalx = -1; decaly = 1; break;
+        case 2 : decaly = 1; break;
+        case 3 : decalx = 1; decaly = 1; break;
+        case 4 : decalx = 1; break;
+        case 5 : decalx = 1; decaly = -1; break;
+        case 6 : decaly = -1; break;
+        case 7 : decalx = -1; decaly = -1; break;
     }
 
-    dimage_part(planes[0].x, planes[0].y, &plane, 16*planes[0].dir, 0, 16, 16);
-
-    for(i = 1; i < MAX_PLANES; i++)
+    for(i = 0; i < MAX_PLANES; i++)
     {
-    dimage_part(planes[i].x + decalx, planes[i].y + decaly, &plane, 16*planes[i].dir, 0, 16, 16);
-        //dimage(planes[i].x + decalx, planes[i].y + decaly, &plane);
-
+        if(i > 0)
+        {
+            planes[i].x += decalx;
+            planes[i].y += decaly;
+        }
+        
+        dimage_part(planes[i].x, planes[i].y, &plane, 16*planes[i].dir, 0, 16, 16);
     }
-    dprint(1,10, "(x,y)(%d,%d)", planes[1].x + decalx, planes[1].y + decaly);
+
+    //dprint(1,10, "(x,y)(%d,%d)", planes[1].x + decalx, planes[1].y + decaly);
 
     dimage(10 + decalx, 10 + decaly, &cloud);
 
@@ -151,19 +147,22 @@ void *update_frame()
                     planes[i].y + 4 - (planes[i].missiles[j].distance + 15) * fsin(planes[i].missiles[j].dir),
                     &missiles, 8 * planes[i].missiles[j].dir, 0, 8, 8);
 
-        planes[i].missiles[j].distance++;
+        planes[i].missiles[j].distance ++;
         }
     }
 
     dupdate();
+    return;
 }
 
+#define MAX_KEYS 4
+
 int game()
 {
     unsigned char fire = 0; // fire disable
     unsigned char sum = 0;
 
-    int keys[3];
+    int keys[MAX_KEYS];
 
     unsigned char i;
     unsigned char j;
@@ -175,16 +174,16 @@ int game()
     timer_t *timer = NULL;
 
     timer = timer_create(40, 0);
-    timer_attach(timer, &update_frame, NULL);
+    timer_attach(timer, update_frame, NULL);
     timer_start(timer);
 
     while(1)
     {
-        multigetkey(keys, 3, 0);
+        multigetkey(keys, MAX_KEYS, 0);
 
         sum = 0;
 
-        for(i = 0; i < 3; i++)
+        for(i = 0; i < MAX_KEYS; i++)
         {
             switch(keys[i])
             {
@@ -199,7 +198,7 @@ int game()
                     if(planes[0].reload > 0)
                     {
                         fire = 1;
-            //            planes[0].reload = planes[0].reload - 1;
+                        //planes[0].reload = planes[0].reload - 1;
                     }
                     break; // fire enable
                 }
diff --git a/wings.bin b/wings.bin
index 69dbcb6..9361343 100755
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diff --git a/wings.elf b/wings.elf
index a9eff59..1bea00a 100755
Binary files a/wings.elf and b/wings.elf differ
diff --git a/wings.g1a b/wings.g1a
index 99bc7f0..e46300a 100644
Binary files a/wings.g1a and b/wings.g1a differ