control instructions

1 files changed, 12 insertions, 1 deletions

@@ -120,6 +120,7 @@ void Renderer::loadAllTextures() {
   loadTextureFromFile("lamp.png", lamp_);
   loadTextureFromFile("read_instruction.png", readInstruction_);
   loadTextureFromFile("menu.png", menuBg_);
+  loadTextureFromFile("help.png", help_);
 
   loadTextureFromFile("title0.png", titles_[0]);
   SDL_QueryTexture(titles_[0].get(), nullptr, nullptr, &titleWidths_[0], &titleHeights_[0]);
@@ -424,7 +425,17 @@ void Renderer::renderGame(
   SDL_SetRenderDrawColor(ren_.get(), 0, 0, 0, 0);
   SDL_RenderClear(ren_.get());
 
-  if (game.signInstructionState != SignInstructionState::Hidden) {
+  if (game.helpState == HelpState::FadeIn || game.helpState == HelpState::Hold || game.helpState == HelpState::FadeOut) {
+    int instOpacity = 255;
+    if (game.helpState == HelpState::FadeIn) {
+      instOpacity = game.helpProgress.getProgress(0, 255);
+    } else if (game.helpState == HelpState::FadeOut) {
+      instOpacity = game.helpProgress.getProgress(255, 0);
+    }
+
+    SDL_SetTextureAlphaMod(help_.get(), instOpacity);
+    SDL_RenderCopy(ren_.get(), help_.get(), nullptr, nullptr);
+  } else if (game.signInstructionState != SignInstructionState::Hidden) {
     int instOpacity = 255;
     if (game.signInstructionState == SignInstructionState::FadingIn) {
       instOpacity = game.signFade.getProgress(0, 255);