signs can be read now!

1 files changed, 96 insertions, 0 deletions

@@ -1,4 +1,5 @@
 #include "renderer.h"
+#include <iostream>
 #include "game.h"
 
 Renderer::Renderer()
@@ -113,6 +114,11 @@ Renderer::Renderer()
 
   loadTextureFromFile("../res/title0.png", titles_[0]);
   SDL_QueryTexture(titles_[0].get(), nullptr, nullptr, &titleWidths_[0], &titleHeights_[0]);
+
+  font_ = font_ptr(TTF_OpenFont("../res/softsquare.ttf", 45));
+  if (!font_) {
+    throw ttf_error();
+  }
 }
 
 void Renderer::renderGame(
@@ -389,6 +395,55 @@ void Renderer::renderGame(
     SDL_RenderCopy(ren_.get(), readInstruction_.get(), nullptr, nullptr);
   }
 
+  if (game.sign.signDisplayState != SignInstructionState::Hidden) {
+    int opacity = 255;
+    if (game.sign.signDisplayState == SignInstructionState::FadingIn) {
+      opacity = game.sign.signDisplayFade.getProgress(0, 255);
+    } else if (game.sign.signDisplayState == SignInstructionState::FadingOut) {
+      opacity = game.sign.signDisplayFade.getProgress(255, 0);
+    }
+
+    SDL_Rect signRect {
+      0,
+      GAME_HEIGHT / 2 - (45 * 2 + 1 + MESSAGE_MARGIN * 2) / 2,
+      GAME_WIDTH,
+      45 * 2 + 1 + MESSAGE_MARGIN * 2
+    };
+
+    SDL_SetRenderDrawBlendMode(ren_.get(), SDL_BLENDMODE_BLEND);
+    SDL_SetRenderDrawColor(ren_.get(), 0, 0, 0, opacity);
+    SDL_RenderFillRect(ren_.get(), &signRect);
+
+    if (game.sign.signDisplayState == SignInstructionState::Visible) {
+      int lineIndex = 0;
+      for (const SignLine& line : game.sign.linesToShow) {
+        if (messageLines_[lineIndex].line != line.text) {
+          renderMessageLine(messageLines_[lineIndex], line.text, game);
+        }
+
+        if (line.charsRevealed > 0) {
+          {
+            SDL_Rect srcRect {
+              0, 0, messageLines_[lineIndex].charIndexToWidth[line.charsRevealed],
+              TTF_FontHeight(font_.get())
+            };
+            SDL_Rect destRect {
+              MESSAGE_MARGIN,
+              GAME_HEIGHT / 2 - (45 * 2 + 1 + MESSAGE_MARGIN * 2) / 2 + MESSAGE_MARGIN + (45 + 1) * lineIndex,
+              srcRect.w,
+              srcRect.h };
+
+            SDL_SetRenderTarget(ren_.get(), nullptr);
+            SDL_RenderCopy(ren_.get(), messageLines_[lineIndex].renderedTex.get(), &srcRect, &destRect);
+            //std::cout << line.charsRevealed << " (" << messageLines_[lineIndex].charIndexToWidth[line.charsRevealed] << "): " << messageLines_[lineIndex].line.substr(0,line.charsRevealed) << std::endl;
+          }
+        }
+
+        lineIndex++;
+      }
+    }
+  }
+
   SDL_RenderPresent(ren_.get());
 }
 
@@ -443,3 +498,44 @@ void Renderer::loadTextureFromFile(std::string_view path, texture_ptr& texture)
   texture = texture_ptr(SDL_CreateTextureFromSurface(ren_.get(), pfs.get()));
   SDL_SetTextureBlendMode(texture.get(), SDL_BLENDMODE_BLEND);
 }
+
+void Renderer::renderMessageLine(MessageCache& line, const std::string& text, const Game& game) {
+  line.line = text;
+
+  line.renderedTex.reset(
+    SDL_CreateTexture(
+      ren_.get(),
+      SDL_PIXELFORMAT_RGBA8888,
+      SDL_TEXTUREACCESS_TARGET,
+      MESSAGE_TEXT_WIDTH,
+      TTF_FontHeight(font_.get())));
+
+  SDL_SetTextureBlendMode(line.renderedTex.get(), SDL_BLENDMODE_BLEND);
+
+  SDL_SetRenderTarget(ren_.get(), line.renderedTex.get());
+  SDL_SetRenderDrawBlendMode(ren_.get(), SDL_BLENDMODE_BLEND);
+  SDL_SetRenderDrawColor(ren_.get(), 0, 0, 0, 0);
+  SDL_RenderClear(ren_.get());
+
+  line.charIndexToWidth.clear();
+  line.charIndexToWidth.push_back(0);
+
+  for (int i=0; i<line.line.size(); i++) {
+    if (line.line[i] != ' ') {
+      int width = 0;
+      std::string substr = line.line.substr(0, i+1);
+      TTF_SizeText(font_.get(), substr.c_str(), &width, nullptr);
+      line.charIndexToWidth.push_back(width);
+    } else {
+      line.charIndexToWidth.push_back(line.charIndexToWidth.back());
+    }
+  }
+
+  SDL_Color fgColor {.r = 255, .g = 255, .b = 255, .a = 255};
+  SDL_Color bgColor {.r = 0, .g = 0, .b = 0, .a = 255};
+  SDL_Rect rect {0, 0, line.charIndexToWidth.back(), TTF_FontHeight(font_.get())};
+  surface_ptr lineSurf = surface_ptr(TTF_RenderText_Shaded(font_.get(), line.line.c_str(), fgColor, bgColor));
+  texture_ptr lineTex = texture_ptr(SDL_CreateTextureFromSurface(ren_.get(), lineSurf.get()));
+  SDL_RenderCopy(ren_.get(), lineTex.get(), nullptr, &rect);
+}
+