diff --git a/.gitignore b/.gitignore
index 993f8c5..5402c75 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,2 +1,6 @@
-build
-.vscode
+build
+.vscode
+
+GPATH
+GRTAGS
+GTAGS
diff --git a/code/apps/server/source/blocks.c b/code/apps/server/source/blocks.c
index 625623b..25609bf 100644
--- a/code/apps/server/source/blocks.c
+++ b/code/apps/server/source/blocks.c
@@ -3,12 +3,11 @@
 
 // todo: csv parsing + utils
 
-#define BLOCK_NAMELEN 80
 #define BLOCKS_COUNT (sizeof(blocks)/sizeof(block))
 
 typedef struct {
     uint8_t tex_id;
-    char name[BLOCK_NAMELEN];
+    const char *name;
     uint32_t flags;
     uint32_t kind;
     uint32_t biome;
diff --git a/code/apps/server/source/world_gen.c b/code/apps/server/source/world_gen.c
index ed993d2..c74a828 100644
--- a/code/apps/server/source/world_gen.c
+++ b/code/apps/server/source/world_gen.c
@@ -31,6 +31,26 @@ static void world_fill_rect(uint32_t id, uint32_t x, uint32_t y, uint32_t w, uin
     }
 }
 
+static void world_fill_circle(uint32_t id, uint32_t x, uint32_t y, uint32_t w, uint32_t h, world_block_observer_proc *proc) {
+    for (uint32_t cy=y; cy<y+h; cy++) {
+        for (uint32_t cx=x; cx<x+w; cx++) {
+            if (cx < 0 || cx >= world_width) continue;
+            if (cy < 0 || cy >= world_height) continue;
+            uint32_t i = (cy*world_width) + cx;
+
+            if (proc) {
+                uint32_t new_id = (*proc)(id, i);
+                if (new_id != BLOCK_INVALID) {
+                    id = new_id;
+                }
+                else continue;
+            }
+
+            world[i] = id;
+        }
+    }
+}
+
 static void world_fill_rect_anchor(uint32_t id, uint32_t x, uint32_t y, uint32_t w, uint32_t h, float ax, float ay, world_block_observer_proc *proc) {
     uint32_t w2 = (uint32_t)floorf(w*ax);
     uint32_t h2 = (uint32_t)floorf(h*ay);
@@ -74,6 +94,10 @@ static WORLD_BLOCK_OBSERVER(shaper_noise33) {
     return world_perlin_cond(block_idx, 0.33) ? shaper(id, block_idx) : BLOCK_INVALID;
 }
 
+static void world_fill_mountain(uint32_t x, uint32_t y) {
+
+}
+
 #define RAND_RANGE(x,y) (x + (uint32_t)rand()%(y-(x)))
 
 int32_t world_gen() {
diff --git a/code/common/system.h b/code/common/system.h
index 20bf192..b2925a6 100644
--- a/code/common/system.h
+++ b/code/common/system.h
@@ -1,3 +1,4 @@
 #pragma once
 
 #include <stdint.h>
+#include <inttypes.h>