Добавить обучение и полный экран результата

app/src/main/java/com/projectsacrifice/game/OnboardingFlow.java

@@ -0,0 +1,45 @@
+package com.projectsacrifice.game;
+
+/** Small state machine for the optional, first-run gameplay hints. */
+public final class OnboardingFlow {
+    public enum Step {
+        MOVEMENT,
+        MULTITOUCH_JUMP,
+        CORPSES_ARE_TOOLS
+    }
+
+    private Step step;
+    private boolean complete;
+
+    private OnboardingFlow(boolean complete) {
+        this.complete = complete;
+        step = Step.MOVEMENT;
+    }
+
+    public static OnboardingFlow firstRun(boolean alreadyComplete) {
+        return new OnboardingFlow(alreadyComplete);
+    }
+
+    public boolean isVisible() {
+        return !complete;
+    }
+
+    public boolean isComplete() {
+        return complete;
+    }
+
+    public Step step() {
+        return step;
+    }
+
+    public void next() {
+        if (complete) return;
+        if (step == Step.MOVEMENT) step = Step.MULTITOUCH_JUMP;
+        else if (step == Step.MULTITOUCH_JUMP) step = Step.CORPSES_ARE_TOOLS;
+        else complete = true;
+    }
+
+    public void skip() {
+        complete = true;
+    }
+}