Added choice prompts

"A presses" are also no longer special values in the lines list, but are rather a field on the MessageLine object.

5 files changed, 110 insertions, 38 deletions

@@ -73,6 +73,14 @@ void InputSystem::tick(double dt) {
             game_.getSystem<ScriptSystem>().runScript("default");
           }
         }
+      } else if (e.key.keysym.sym == SDLK_LEFT) {
+        if (game_.getSystem<MessageSystem>().isChoiceActive()) {
+          game_.getSystem<MessageSystem>().selectFirstChoice();
+        }
+      } else if (e.key.keysym.sym == SDLK_RIGHT) {
+        if (game_.getSystem<MessageSystem>().isChoiceActive()) {
+          game_.getSystem<MessageSystem>().selectSecondChoice();
+        }
       }
     } else if (e.type == SDL_KEYUP && (e.key.keysym.sym == SDLK_LSHIFT || e.key.keysym.sym == SDLK_RSHIFT)) {
       for (int spriteId : game_.getSprites()) {
@@ -39,10 +39,16 @@ void MessageSystem::tick(double dt) {
               }
             }
 
-            line.charsRevealed += CHARS_TO_REVEAL;
-            if (line.charsRevealed > line.text.size()) {
+            if (line.isChoice) {
               line.charsRevealed = line.text.size();
+              choiceSelection_ = 0;
+            } else {
+              line.charsRevealed += CHARS_TO_REVEAL;
+              if (line.charsRevealed > line.text.size()) {
+                line.charsRevealed = line.text.size();
+              }
             }
+
             advancedChars = true;
             break;
           }
@@ -50,14 +56,14 @@ void MessageSystem::tick(double dt) {
 
         if (!advancedChars) {
           // If both lines are totally revealed, see if we can scroll up a line.
-          // This is doable as long as the next line isn't the sentinel value that
-          // means an A press is required.
-          if (!lines_.empty() && lines_.front() != "\f") {
+          // This is doable as long as the last currently visible line doesn't
+          // have the flag that means an A press is required.
+          if (!lines_.empty() && !linesToShow_.back().pause) {
             if (linesToShow_.size() == 2) {
               linesToShow_.pop_front();
             }
 
-            linesToShow_.push_back(MessageLine { .text = lines_.front() });
+            linesToShow_.push_back(lines_.front());
             lines_.pop_front();
           } else {
             showNextArrow_ = true;
@@ -113,8 +119,8 @@ void MessageSystem::displayMessage(std::string_view msg, std::string speakerName
       text.erase(0, 1);
       shouldAddBlank = false;
 
-      if (lines_.empty() || lines_.back() != "\f") {
-        lines_.push_back("\f");
+      if (!lines_.empty()) {
+        lines_.back().pause = true;
       }
     }
 
@@ -139,13 +145,13 @@ void MessageSystem::displayMessage(std::string_view msg, std::string speakerName
       }
 
       if (nextWidth > MESSAGE_TEXT_WIDTH) {
-        lines_.push_back(curLine);
+        lines_.push_back({.text = curLine});
         curLine = word;
         curWidth = wordWidth + game_.getFont().getCharacterWidth(' ');
 
         if (shouldAddBlank) {
           shouldAddBlank = false;
-          lines_.push_back("\f");
+          lines_.back().pause = true;
         } else {
           shouldAddBlank = true;
         }
@@ -160,52 +166,66 @@ void MessageSystem::displayMessage(std::string_view msg, std::string speakerName
       firstWord = false;
     }
 
-    lines_.push_back(curLine);
+    lines_.push_back({.text = curLine});
 
     if (shouldAddBlank) {
       shouldAddBlank = false;
-      lines_.push_back("\f");
+      lines_.back().pause = true;
     } else {
       shouldAddBlank = true;
     }
   }
 
-  if (lines_.empty() || lines_.back() != "\f") {
-    lines_.push_back("\f");
+  if (!lines_.empty()) {
+    lines_.back().pause = true;
   }
 
   if (linesToShow_.empty()) {
-    linesToShow_.push_back(MessageLine { .text = lines_.front() });
+    linesToShow_.push_back(lines_.front());
     lines_.pop_front();
 
-    if (lines_.front() != "\f") {
-      linesToShow_.push_back(MessageLine { .text = lines_.front() });
+    if (!linesToShow_.back().pause) {
+      linesToShow_.push_back(lines_.front());
       lines_.pop_front();
     }
   }
 }
 
+void MessageSystem::showChoice(std::string choice1, std::string choice2) {
+  MessageLine line;
+  line.text = std::string(8, ' ') + choice1 + std::string(11, ' ') + choice2;
+  line.pause = true;
+  line.isChoice = true;
+  line.choicePos[0] = 8;
+  line.choicePos[1] = 8 + 11 + choice1.size();
+
+  lines_.push_back(line);
+}
+
 void MessageSystem::advanceText() {
+  // Cutscene must be active.
   if (barsState_ != BarsState::Open) {
     return;
   }
+  if (linesToShow_.empty()) {
+    return;
+  }
 
+  // We can only advance if all visible lines are fully revealed.
   for (const MessageLine& line : linesToShow_) {
     if (line.charsRevealed != line.text.size()) {
       return;
     }
   }
 
-  if (lines_.empty()) {
-    linesToShow_.clear();
+  // If the last visible line doesn't have a pause, then the cutscene
+  // will automatically progress without us doing anything.
+  if (!linesToShow_.back().pause) {
     return;
   }
 
-  if (lines_.front() != "\f") {
-    return;
-  }
-
-  lines_.pop_front();
+  // Clear the current pause.
+  linesToShow_.back().pause = false;
   showNextArrow_ = false;
 
   if (lines_.empty()) {
@@ -215,6 +235,20 @@ void MessageSystem::advanceText() {
   }
 }
 
+void MessageSystem::selectFirstChoice() {
+  if (isChoiceActive() && choiceSelection_ != 0) {
+    choiceSelection_ = 0;
+    game_.getMixer().playSound("../res/sfx/horizontal_menu.wav");
+  }
+}
+
+void MessageSystem::selectSecondChoice() {
+  if (isChoiceActive() && choiceSelection_ != 1) {
+    choiceSelection_ = 1;
+    game_.getMixer().playSound("../res/sfx/horizontal_menu.wav");
+  }
+}
+
 double MessageSystem::getCutsceneBarsProgress() const {
   switch (barsState_) {
     case BarsState::Closed: return 0.0;
@@ -18,6 +18,14 @@ enum class SpeakerType {
   Nonhuman
 };
 
+struct MessageLine {
+  std::string text;
+  int charsRevealed = 0;
+  bool pause = false;
+  bool isChoice = false;
+  int choicePos[2] = {-1, -1};
+};
+
 class MessageSystem : public System {
 public:
 
@@ -41,17 +49,18 @@ public:
     std::string speakerName = "",
     SpeakerType speakerType = SpeakerType::None);
 
+  void showChoice(std::string choice1, std::string choice2);
+
   void advanceText();
 
+  void selectFirstChoice();
+
+  void selectSecondChoice();
+
   // Info
 
   double getCutsceneBarsProgress() const;
 
-  struct MessageLine {
-    std::string text;
-    int charsRevealed = 0;
-  };
-
   const std::list<MessageLine>& getLines() const { return linesToShow_; }
 
   bool isMessageActive() const { return !linesToShow_.empty(); }
@@ -62,6 +71,10 @@ public:
 
   int getNextArrowBob() const { return nextArrowBobPos_; }
 
+  bool isChoiceActive() const { return isMessageActive() && linesToShow_.back().isChoice; }
+
+  int getChoiceSelection() const { return choiceSelection_; }
+
 private:
 
   enum class BarsState {
@@ -77,13 +90,14 @@ private:
   double length_ = 1000.0/8;
   SpeakerType speaker_ = SpeakerType::None;
   std::string speakerName_;
-  std::list<std::string> lines_;
+  std::list<MessageLine> lines_;
   std::list<MessageLine> linesToShow_;
   Timer textAdvTimer_ { 15 };
   bool showNextArrow_ = false;
   int nextArrowBobPos_ = 0;
   bool nextArrowBobDown_ = true;
   Timer nextArrowBobTimer_ { 125 };
+  int choiceSelection_ = 0;
 };
 
 #endif /* end of include guard: MESSAGE_SYSTEM_H_DE10D011 */
@@ -194,7 +194,7 @@ void Renderer::render(Game& game) {
       }
 
       int lineIndex = 0;
-      for (const MessageSystem::MessageLine& line : game.getSystem<MessageSystem>().getLines()) {
+      for (const MessageLine& line : game.getSystem<MessageSystem>().getLines()) {
         if (messageLines_[lineIndex].line != line.text) {
           renderMessageLine(messageLines_[lineIndex], line.text, game);
         }
@@ -223,13 +223,27 @@ void Renderer::render(Game& game) {
           advMsgArrowTex_ = loadImageFromFile("../res/advance_text_arrow.png");
         }
 
-        SDL_Rect destRect {
-          216,
-          138 + game.getSystem<MessageSystem>().getNextArrowBob(),
-          16,
-          16 };
+        if (game.getSystem<MessageSystem>().isChoiceActive()) {
+          int selection = game.getSystem<MessageSystem>().getChoiceSelection();
+          int charIndex = game.getSystem<MessageSystem>().getLines().back().choicePos[selection];
+          int baseX = messageLines_[1].charIndexToWidth[charIndex];
 
-        SDL_RenderCopy(ren_.get(), textures_.at(advMsgArrowTex_).get(), nullptr, &destRect);
+          SDL_Rect destRect {
+            18 + baseX - game.getSystem<MessageSystem>().getNextArrowBob()-16+3,
+            141,
+            16,
+            16};
+
+          SDL_RenderCopyEx(ren_.get(), textures_.at(advMsgArrowTex_).get(), nullptr, &destRect, -90, nullptr, SDL_FLIP_NONE);
+        } else {
+          SDL_Rect destRect {
+            216,
+            138 + game.getSystem<MessageSystem>().getNextArrowBob(),
+            16,
+            16 };
+
+          SDL_RenderCopy(ren_.get(), textures_.at(advMsgArrowTex_).get(), nullptr, &destRect);
+        }
       }
     }
   }
@@ -21,8 +21,10 @@ ScriptSystem::ScriptSystem(Game& game) : game_(game) {
   engine_.new_usertype<MessageSystem>(
     "message",
     "displayMessage", &MessageSystem::displayMessage,
+    "showChoice", &MessageSystem::showChoice,
     "hideCutsceneBars", &MessageSystem::hideCutsceneBars,
-    "isMessageActive", sol::property(&MessageSystem::isMessageActive));
+    "isMessageActive", sol::property(&MessageSystem::isMessageActive),
+    "getChoiceSelection", &MessageSystem::getChoiceSelection);
 
   engine_.new_usertype<AnimationSystem>(
     "animation",