Made a "damage indicator" shader; started working on having it toggle

when hit by enemy bullet.

player_hit.gdshader

@@ -0,0 +1,17 @@
+shader_type canvas_item;
+
+uniform float toggle;
+
+void vertex() {
+	// Called for every vertex the material is visible on.
+}
+
+void fragment() {
+    COLOR = texture(TEXTURE, UV);
+    COLOR.r = mix(COLOR.r, abs(sin(TIME * 20.25)), toggle);
+}
+
+//void light() {
+//	// Called for every pixel for every light affecting the CanvasItem.
+//	// Uncomment to replace the default light processing function with this one.
+//}