Updated levels and added map selection logic

core/resources/shaders/fisheye.gdshader

@@ -0,0 +1,19 @@
+shader_type canvas_item;
+uniform sampler2D screen_texture : hint_screen_texture, repeat_disable, filter_nearest;
+uniform float fisheye_strength = 1.0; // Control the fisheye effect strength
+vec2 fisheye(vec2 uv) {
+vec2 d = uv - 0.5;
+float r = length(d);
+float theta = atan(d.y, d.x);
+float rf = pow(r, fisheye_strength) / pow(0.5, fisheye_strength - 1.0);
+return vec2(0.5) + rf * normalize(d);
+}
+void fragment() {
+vec2 iResolution = 1.0 / SCREEN_PIXEL_SIZE;
+vec2 q = FRAGCOORD.xy / iResolution.xy;
+
+// Apply fisheye distortion
+q = fisheye(q);
+vec3 col = texture(screen_texture, q).rgb;
+COLOR = vec4(col, 1.0);
+}