diff --git a/main.odin b/main.odin
index 85a7d5a..291bab2 100644
--- a/main.odin
+++ b/main.odin
@@ -17,24 +17,22 @@ GameEndType :: enum {
 }
 
 state: GameState
-ratio: i32
+ratio: f32
 
 texture_atlas_image: rl.Image
 texture_atlas: rl.Texture2D
 
-camera := rl.Camera2D {
-	zoom = GLOBAL_SPRITE_SCALE,
-}
+window_width: i32
+window_height: i32
 
-window_width : i32; window_height: i32
 // orignal resolution of space invaders: 256 x 224 px
 setup :: proc(state: ^GameState) {
 	using state
 	target_fps = 60
 
-	monitor := rl.GetCurrentMonitor()
-	window_width = rl.GetMonitorWidth(monitor)
-	window_height = rl.GetMonitorHeight(monitor)
+	// monitor := rl.GetCurrentMonitor()
+	window_width = rl.GetScreenWidth()
+	window_height = rl.GetScreenHeight()
 
 	current_frame_time = rl.GetTime()
 	previous_screen = .TITLE
@@ -60,6 +58,7 @@ update :: proc(state: ^GameState) {
 
 	update_screen(state)
 }
+
 target: rl.RenderTexture2D
 draw :: proc(state: ^GameState) {
 	rl.BeginTextureMode(target)
@@ -75,10 +74,10 @@ draw :: proc(state: ^GameState) {
 			target.texture,
 			{0, 0, f32(target.texture.width), f32(-target.texture.height)},
 			 {
-				f32((window_width - (target.texture.width * ratio)) / 2),
+				(f32(window_width) - (f32(target.texture.width) * ratio)) / 2,
 				0,
-				f32(target.texture.width * ratio),
-				f32(target.texture.height * ratio),
+				f32(target.texture.width) * ratio,
+				f32(target.texture.height) * ratio,
 			},
 			{0, 0},
 			0,
@@ -103,9 +102,11 @@ main :: proc() {
 	state.screen_width = 720
 	state.screen_height = 520
 
+	rl.SetWindowMinSize(state.screen_width, state.screen_height)
+
 	target = rl.LoadRenderTexture(state.screen_width, state.screen_height)
 	defer rl.UnloadRenderTexture(target)
-	ratio = i32(window_height / target.texture.height)
+	ratio = f32(window_height) / f32(target.texture.height)
 
 	texture_atlas_image = rl.LoadImage(TEXTURE_ATLAS_PATH)
 	texture_atlas = rl.LoadTextureFromImage(texture_atlas_image)
@@ -113,6 +114,11 @@ main :: proc() {
 	log.info("Loaded images")
 
 	for !rl.WindowShouldClose() {
+		if rl.IsWindowResized() {
+			window_width = rl.GetScreenWidth()
+			window_height = rl.GetScreenHeight()
+			ratio = f32(window_height) / f32(target.texture.height)
+		}
 		update(&state)
 		draw(&state)
 	}