diff --git a/build.bat b/build.bat
index 51fbb27..690841b 100644
--- a/build.bat
+++ b/build.bat
@@ -3,7 +3,7 @@ call "..\misc\compile_setup.bat"
 
 rem bld --dont_compile_core
 cd build
-core_main.exe examples/game2d.core
-rem bld --dont_compile_core --link=vendor/raylib/windows/raylibdll.lib
+core_main.exe rtsgame/main.core
+bld --dont_compile_core --link=vendor/raylib/windows/raylibdll.lib
 rem build\generated_main.exe
 cd ..
diff --git a/build/modules/Arena.core b/build/modules/Arena.core
index 49c49bb..c32805b 100644
--- a/build/modules/Arena.core
+++ b/build/modules/Arena.core
@@ -40,3 +40,11 @@ PushSize :: (a: *Arena, size: Base.SizeU): *void
 
 Release :: (a: *Arena)
   OS.Release(&a.memory)
+
+PushArray :: (a: *Arena, count: int, $T: Type): *T
+  result := PushSize(a, SizeOf(T) * count->U64)
+  return result->*T
+
+PushStruct :: (a: *Arena, $T: Type): *T
+  result := PushSize(a, SizeOf(T))
+  return result->*T
\ No newline at end of file
diff --git a/build/modules/LibC.core b/build/modules/LibC.core
index ace9eeb..0fe387f 100644
--- a/build/modules/LibC.core
+++ b/build/modules/LibC.core
@@ -1,10 +1,12 @@
 size_t :: U64 // @todo(Krzosa): Need this type
-long :: #strict int // @todo(Krzosa): Need this type
 
 malloc :: #foreign (size: size_t): *void
 realloc :: #foreign (ptr: *void, size: size_t): *void
 free :: #foreign (ptr: *void)
 
+memcpy :: #foreign (dst: *void, src: *void, size: size_t): *void
+memmove :: #foreign (dst: *void, src: *void, size: size_t): *void
+
 FILE :: #strict U64 // Doesnt matter the type just handle
 fopen :: #foreign (file: *char, mode: *char): *FILE
 fclose :: #foreign (file: *FILE): int
@@ -15,8 +17,3 @@ fread :: #foreign (buffer: *void, element_size: size_t, element_count: size_t, s
 SEEK_CUR :: 1
 SEEK_END :: 2
 SEEK_SET :: 0
-
-Triple :: struct($A: Type, $B: Type, $C: Type)
-	a: A
-	b: B
-	c: C
\ No newline at end of file
diff --git a/build/modules/raylib.core b/build/modules/raylib.core
index e469394..81d2e47 100644
--- a/build/modules/raylib.core
+++ b/build/modules/raylib.core
@@ -643,10 +643,10 @@ SetGamepadMappings       :: #foreign (mappings: *char): int                    /
 
 // Input-related functions: mouse
 
-IsMouseButtonPressed  :: #foreign (button: MouseButton): bool    // Detect if a mouse button has been pressed once
-IsMouseButtonDown     :: #foreign (button: MouseButton): bool    // Detect if a mouse button is being pressed
-IsMouseButtonReleased :: #foreign (button: MouseButton): bool    // Detect if a mouse button has been released once
-IsMouseButtonUp       :: #foreign (button: MouseButton): bool    // Detect if a mouse button is NOT being pressed
+IsMouseButtonPressed  :: #foreign (button: int): bool    // Detect if a mouse button has been pressed once
+IsMouseButtonDown     :: #foreign (button: int): bool    // Detect if a mouse button is being pressed
+IsMouseButtonReleased :: #foreign (button: int): bool    // Detect if a mouse button has been released once
+IsMouseButtonUp       :: #foreign (button: int): bool    // Detect if a mouse button is NOT being pressed
 GetMouseX             :: #foreign (): int                      // Returns mouse position X
 GetMouseY             :: #foreign (): int                      // Returns mouse position Y
 GetMousePosition      :: #foreign (): Vector2                    // Returns mouse position XY
diff --git a/build/rtsgame/array.core b/build/rtsgame/array.core
index f181d30..8803097 100644
--- a/build/rtsgame/array.core
+++ b/build/rtsgame/array.core
@@ -5,11 +5,70 @@ Array :: struct($T: Type)
   len: int
   cap: int
 
-Add :: (a: *Array($T), item: T)
+Pop :: (a: *Array($T)): T
+  if a.len > 0
+    a.len -= 1
+    return a.data[a.len]
+  // @reproduction: c compile error, probably because of compound expression (Array){}
+  // return {}
+
+  result: T
+  return result
+
+Contains :: (a: *Array($T), item: *T): bool
+  result := item >= a.data && item < a.data + a.len
+  return result
+
+Free :: (a: *Array($T))
+  free(a.data)
+  a.cap = 0; a.len = 0; a.data = 0
+
+Reset :: (a: *Array($T))
+  a.len = 0
+
+GetIndex :: (a: *Array($T), item: *T): int
+  Assert(a.len > 0)
+  Assert(item >= a.data && item < a.data + a.len)
+
+  // @reproduction: compiler hangs
+  // index := (item - a.data)->*void->size_t
+  index := (item - a.data)->int
+  Assert(index >= 0 && index < a.len)
+  return index
+
+UnorderedRemove :: (a: *Array($T), item: *T)
+  Assert(a.len > 0)
+  Assert(item >= a.data && item < a.data + a.len)
+
+  *item = a.data[--a.len]
+
+OrderedRemove :: (a: *Array($T), item: *T)
+  index := GetIndex(a, item)
+  if index == a.len - 1
+    Pop(a)
+    return
+
+  length_right_of_item := (a.len - index - 1)->size_t
+  memmove(a.data + index, a.data + index + 1, length_right_of_item * SizeOf(T))
+  a.len -= 1
+
+
+TryGrowing :: (a: *Array($T))
   if a.cap == 0
     a.cap = 16
-    a.data = malloc(SizeOf(T) * a.cap->U64)
+    a.data = malloc(SizeOf(T) * a.cap->size_t)
   if a.len + 1 > a.cap
     a.cap *= 2
-    a.data = realloc(a.data, SizeOf(T) * a.cap->U64)
+    a.data = realloc(a.data, SizeOf(T) * a.cap->size_t)
+
+
+Add :: (a: *Array($T), item: T)
+  TryGrowing(a)
   a.data[a.len++] = item
+
+Reserve :: (a: *Array($T), size: int)
+  Assert(size > a.cap)
+  a.cap = size
+  p := realloc(a.data, SizeOf(T) * a.cap->size_t)
+  Assert(p != 0)
+  a.data = p
\ No newline at end of file
diff --git a/build/rtsgame/main.core b/build/rtsgame/main.core
index 810a582..c397045 100644
--- a/build/rtsgame/main.core
+++ b/build/rtsgame/main.core
@@ -1,6 +1,3 @@
-#import "raylib.core"
-
-#load "array.core"
 
 /*@feature_idea: labeled block
 
@@ -63,9 +60,23 @@ Add(&guys, {100, 100})
 //
 // Map map = (Map ){.data = (&(map_data[0])), .data = 0x10, .x = 16};
 
+// @reproduction
+// if Mode == 0 && colliding && IsMouseButtonPressed(MOUSE_BUTTON_RIGHT) ;; GuyP = {x,y}
+//
+// Error! Couldn't infer type of compound expression
+//
+// Couldn't figure out type of compound expression when variable got declared and separetly
+// got assigned a value
+//
 
-Guy :: struct
-  pos: Vector2
+
+#import "raylib.core"
+MA :: #import "Arena.core"
+#load "array.core"
+
+V2I :: struct
+  x: int
+  y: int
 
 Map_Tile :: int
 Map :: struct
@@ -73,54 +84,85 @@ Map :: struct
   x: int
   y: int
 
-SCR_X := 1280
-SCR_Y := 720
+Actor :: struct
+  p: V2I
+  target_p: V2I
 
-M_X := 0
-M_Y := 0
-M_P: Vector2
+WinX := 1280
+WinY := 720
+
+MouseX := 0
+MouseY := 0
+MouseP: Vector2
+
+Mode := 0
+RectX :: 16
+RectY :: 16
+
+GuyP: V2I
 
 main :: (): int
-  guys: Array(Guy)
-  Add(&guys, {pos = {100, 100}})
 
 
-  map_data: [16*16]int
-  map: Map = {data = &map_data[0], x = 16, y = 16}
+  MAP_X :: 60
+  MAP_Y :: 40
+  map_data: [MAP_X*MAP_Y]int
+  map: Map = {data = &map_data[0], x = MAP_X, y = MAP_Y}
 
-  InitWindow(SCR_X, SCR_Y, "Testing")
-  SetTargetFPS(60)
+  actors: Array(Actor)
+  Reserve(&actors, 4)
+
+  Add(&actors, {{4, 4}, {8, 8}})
+  Assert(Contains(&actors, actors.data) == true)
+  OrderedRemove(&actors, actors.data)
+  Assert(Contains(&actors, actors.data) == false)
 
   // InitAudioDevice()
   // sound := LoadSound("catune - Pass the town, and to the C.mp3")
   // SetMasterVolume(0.01)
   // PlaySound(sound)
 
+  InitWindow(WinX, WinY, "Testing")
+  SetTargetFPS(60)
 
   for !WindowShouldClose()
-    SCR_X = GetScreenWidth()
-    SCR_Y = GetScreenHeight()
-    M_X = GetMouseX()
-    M_Y = GetMouseY()
-    M_P = GetMousePosition()
+    WinX = GetScreenWidth()
+    WinY = GetScreenHeight()
+    MouseX = GetMouseX()
+    MouseY = GetMouseY()
+    MouseP = GetMousePosition()
+
+    if IsKeyPressed(KEY_F1) ;; Mode := 0
+    if IsKeyPressed(KEY_F2) ;; Mode := 1
 
     BeginDrawing()
     ClearBackground(RAYWHITE)
 
-    RX := 16
-    RY := 16
-    for x := 0, x < 16, x += 1
-      for y := 0, y < 16, y += 1
-        it := map.data[x + y*map.x]
-        r: Rectangle = {(x * RX)->F32, (y * RY)->F32, RX->F32, RY->F32}
+    for x := 0, x < map.x, x += 1
+      for y := 0, y < map.y, y += 1
+        it := map.data + (x + y*map.x)
+        r: Rectangle = {x->F32 * RectX, y->F32 * RectY, RectX, RectY}
         r2: Rectangle = {r.x + 1, r.y + 1, r.width - 2, r.height - 2}
 
-        color := RED
-        if it == 1                        ;; color = GREEN
-        if CheckCollisionPointRec(M_P, r) ;; color = BLUE
+        colliding := CheckCollisionPointRec(MouseP, r)
+
+        if Mode == 0 && colliding && IsMouseButtonDown(MOUSE_BUTTON_LEFT) ;; *it = 1
+        if Mode == 0 && colliding && IsMouseButtonPressed(MOUSE_BUTTON_RIGHT) ;; GuyP = V2I{x,y}
+
+        color := GREEN
+        if *it == 1                   ;; color = RED
+        if colliding == true          ;; color = MAROON
 
         DrawRectangleRec(r2, color)
 
+    for i := 0, i < actors.len, i += 1
+      it := actors.data + i
+      r := Rectangle{it.p.x->F32 * RectX, it.p.y->F32 * RectY, RectX, RectY}
+      target_r := Rectangle{it.target_p.x->F32 * RectX, it.target_p.y->F32 * RectY, RectX, RectY}
+
+      DrawRectangleRec(r, YELLOW)
+      DrawRectangleRec(target_r, PURPLE)
+
 
     // DrawFPS(0, 0)
     // DrawText(TextFormat("Testing %d", 32), 100, 100, 20, MAROON)
diff --git a/core_typechecking.cpp b/core_typechecking.cpp
index b2498ef..6d120fe 100644
--- a/core_typechecking.cpp
+++ b/core_typechecking.cpp
@@ -984,6 +984,8 @@ resolve_cast(Ast_Binary *node) {
         case TYPE_POINTER: {
             if (is_pointer(type))
                 expr = operand_rvalue(type);
+            else if (is_int(type))
+                expr = operand_rvalue(type);
             else goto failure;
         } break;
         CASE_UNTYPED : {