Added map fadeouts

Screen fadeouts and map fadeouts are now handled by the effect system.

1 files changed, 60 insertions, 0 deletions

@@ -0,0 +1,60 @@
+#ifndef EFFECT_SYSTEM_H_0B497B39
+#define EFFECT_SYSTEM_H_0B497B39
+
+#include "system.h"
+
+class Game;
+
+class EffectSystem : public System {
+public:
+
+  static constexpr SystemKey Key = SystemKey::Effect;
+
+  explicit EffectSystem(Game& game) : game_(game) {}
+
+  void tick(double dt) override;
+
+  /* Commands */
+
+  // Fades the entire screen in or out
+  // - length is in milliseconds
+  // - amount is [0,1]
+  void fadeScreen(int length, double amount);
+
+  // Fades just the map, leaving the sprites, messages, etc unfaded.
+  // - length is in milliseconds
+  // - amount is [0,1]
+  void fadeMap(int length, double amount);
+
+  /* Information */
+
+  bool isScreenFaded() const { return screenFade_ > 0.0; }
+
+  double getScreenFadeProgress() const { return screenFade_; }
+
+  bool isScreenFadeComplete() const { return screenFade_ == screenFadeDest_; }
+
+  bool isMapFaded() const { return mapFade_ > 0.0; }
+
+  double getMapFadeProgress() const { return mapFade_; }
+
+  bool isMapFadeComplete() const { return mapFade_ == mapFadeDest_; }
+
+private:
+
+  Game& game_;
+
+  double screenFade_ = 0.0;
+  double screenFadeDest_ = 0.0;
+  double screenFadeStart_ = 0.0;
+  double screenFadeLength_ = 0;
+  double screenFadeThus_ = 0;
+
+  double mapFade_ = 0.0;
+  double mapFadeDest_ = 0.0;
+  double mapFadeStart_ = 0.0;
+  double mapFadeLength_ = 0.0;
+  double mapFadeThus_ = 0.0;
+};
+
+#endif /* end of include guard: EFFECT_SYSTEM_H_0B497B39 */