...

src/main.c

@@ -78,8 +78,12 @@ int main(int argc, char** argv) {
     p3.x = 12.0 ; p3.y = 8.0 ; p3.z = 1.0 ;
     p4.x = 0.0 ; p4.y = 8.0 ; p4.z = 1.0 ;
 
+    for(int i = 0; i < 359; i++) {
+        resetBuffer();
         project_rectangle(p1, p2, p3, p4);
         bufferUpdateRenderer(rend);
+        three_angle = i+1 ;
+    }
 
     printf("pass\n");
     usleep(3000000);

src/threed.c

@@ -197,10 +197,12 @@ void drawPolygonToBuffer(int count, ...) {
         printf("(%d -> %d)\n", pmin, pmax);*/
 
         for(int i = 0; i < poly_length; i++) {
+            if(polygon_b[i].x >= draw_const || polygon_b[(i+1)%pt_count].x >= draw_const) {
                 drawLineWithThiccToBuffer(4, polygon_b[i].x, polygon_b[(i+1)%poly_length].x, (int)polygon_b[i].y, (int)polygon_b[(i+1)%poly_length].y, (int)polygon_b[i].z, (int)polygon_b[(i+1)%poly_length].z, 255, 255, 255);
             }
         }
     }
+}
 
 pt_3d adjust(pt_3d p) {
     pt_3d res;
@@ -208,8 +210,8 @@ pt_3d adjust(pt_3d p) {
     res.y = p.y - (player_cy * 8 + player_y + εy) ;
     res.z = p.z - 1.8 ; // height of player
 
-    res.x = res.y * sinuses[three_angle] + res.x * cosinuses[three_angle];
-    res.y = (p.y - (player_cy * 8 + player_y + εy)) * cosinuses[three_angle] + res.x * sinuses[three_angle] ;
+    res.x = res.x * cosinuses[three_angle] - (p.y - (player_cy * 8 + player_y + εy)) * sinuses[three_angle] ;
+    res.y = res.y * cosinuses[three_angle] + (p.x - (player_cx * 8 + player_x + εx)) * sinuses[three_angle] ;
 
     return res;
 }