Added a debug console

Open it by pressing backtick, close it by hitting escape. Pressing backtick does not open it in release builds.

Current shortcomings: opening it for the first time also types a backtick for some reason, but not on subsequent times. Also, it doesn't create a coroutine, so any script function that yields is going to fail.

This also added a "is gameplay paused" flag to Game, which will be useful for adding a pause menu.

1 files changed, 61 insertions, 0 deletions

@@ -7,6 +7,7 @@
 #include "camera_system.h"
 #include "message_system.h"
 #include "effect_system.h"
+#include "input_system.h"
 
 Renderer::Renderer() {
   win_ = window_ptr(
@@ -333,6 +334,61 @@ void Renderer::render(Game& game) {
     SDL_RenderFillRect(ren_.get(), nullptr);
   }
 
+  if (game.getSystem<InputSystem>().isDebugConsoleOpen()) {
+    // Not sure why I'm supposed to copy the cached texture to the screen
+    // BEFORE rendering it, but we get flickering if we don't, so.
+    SDL_RenderCopy(ren_.get(), debugConsoleTex_.get(), nullptr, &debugDestRect_);
+
+    if (!debugConsoleTex_ || cachedDebugText_ != game.getSystem<InputSystem>().getDebugText()) {
+      cachedDebugText_ = game.getSystem<InputSystem>().getDebugText();
+
+      std::vector<texture_ptr> textLines;
+      std::string remaining = "`" + cachedDebugText_;
+
+      while (!remaining.empty()) {
+        MessageCache output;
+        renderMessageLine(output, remaining, game);
+        textLines.push_back(std::move(output.renderedTex));
+        remaining = output.overflow;
+
+        if (!remaining.empty()) {
+          remaining = "   " + remaining;
+        }
+      }
+
+      int height = 16 * textLines.size() + 4 + 4;
+
+      debugConsoleTex_.reset(
+        SDL_CreateTexture(
+          ren_.get(),
+          SDL_PIXELFORMAT_RGBA8888,
+          SDL_TEXTUREACCESS_TARGET,
+          CANVAS_WIDTH,
+          height));
+
+      SDL_SetRenderTarget(ren_.get(), debugConsoleTex_.get());
+      SDL_SetTextureBlendMode(debugConsoleTex_.get(), SDL_BLENDMODE_BLEND);
+      SDL_SetRenderDrawBlendMode(ren_.get(), SDL_BLENDMODE_BLEND);
+      SDL_SetRenderDrawColor(ren_.get(), 30, 0, 110, 127);
+      //SDL_RenderFillRect(ren_.get(), nullptr);
+      SDL_RenderClear(ren_.get());
+
+      for (int i=0; i<textLines.size(); i++) {
+        SDL_Rect destRect {
+          18,
+          4 + 16 * i,
+          MESSAGE_TEXT_WIDTH,
+          game.getFont().getCharacterHeight() };
+
+        SDL_RenderCopy(ren_.get(), textLines[i].get(), nullptr, &destRect);
+      }
+
+      SDL_SetRenderTarget(ren_.get(), nullptr);
+
+      debugDestRect_ = SDL_Rect { 0, 0, CANVAS_WIDTH, height };
+    }
+  }
+
   SDL_SetRenderTarget(ren_.get(), nullptr);
   SDL_RenderCopy(ren_.get(), cameraTex.get(), nullptr, nullptr);
   SDL_RenderPresent(ren_.get());
@@ -383,6 +439,11 @@ void Renderer::renderMessageLine(MessageCache& line, const std::string& text, Ga
 
   for (int i=0; i<line.line.size(); i++) {
     if (line.line[i] != ' ') {
+      if (length + game.getFont().getCharacterWidth(line.line[i]) > MESSAGE_TEXT_WIDTH) {
+        line.overflow = line.line.substr(i);
+        break;
+      }
+
       vec2i charLoc = game.getFont().getCharacterLocation(line.line[i]);
       vec2i charSize = game.getFont().getCharacterSize(line.line[i]);
       SDL_Rect srcRect { charLoc.x(), charLoc.y(), charSize.w(), charSize.h() };