Flashlight and basic character controls

shaders/light_shader.gdshader

@@ -0,0 +1,7 @@
+shader_type canvas_item;
+
+uniform sampler2D screen_texture : hint_screen_texture, repeat_disable, filter_nearest;
+
+void fragment() {
+        COLOR = vec4(vec3(1,1,1) - texture(screen_texture, SCREEN_UV).rgb, 1);
+}