Imported renderer stuff from Ether

4 files changed, 373 insertions, 1 deletions

@@ -0,0 +1,7 @@
+#ifndef CONSTS_H_9561E49C
+#define CONSTS_H_9561E49C
+
+const int GAME_WIDTH = 640;
+const int GAME_HEIGHT = 480;
+
+#endif /* end of include guard: CONSTS_H_9561E49C */
@@ -1,6 +1,29 @@
 #include <iostream>
+#include "renderer.h"
+
+void loop(Renderer& renderer) {
+  for (;;) {
+    SDL_Event e;
+    while (SDL_PollEvent(&e))
+    {
+      if (e.type == SDL_QUIT)
+      {
+        return;
+      }
+    }
+  }
+}
 
 int main(int, char**) {
-  std::cout << "hi" << std::endl;
+  try
+  {
+    Renderer renderer;
+
+    loop(renderer);
+  } catch (const sdl_error& ex)
+  {
+    std::cout << "SDL error (" << ex.what() << ")" << std::endl;
+  }
+
   return 0;
 }
@@ -0,0 +1,216 @@
+#include "renderer.h"
+#include "consts.h"
+
+Renderer::Renderer()
+{
+  win_ = window_ptr(
+    SDL_CreateWindow(
+      "Tanetane",
+      100,
+      100,
+      GAME_WIDTH,
+      GAME_HEIGHT,
+      SDL_WINDOW_SHOWN));
+
+  if (!win_)
+  {
+    throw sdl_error();
+  }
+
+  ren_ = renderer_ptr(
+    SDL_CreateRenderer(
+      win_.get(),
+      -1,
+      SDL_RENDERER_ACCELERATED | SDL_RENDERER_PRESENTVSYNC));
+
+  if (!ren_)
+  {
+    throw sdl_error();
+  }
+}
+
+/*void Renderer::render()
+{
+  texture_ptr canvas(
+    SDL_CreateTexture(
+      ren_.get(),
+      SDL_PIXELFORMAT_RGBA8888,
+      SDL_TEXTUREACCESS_TARGET,
+      TILE_WIDTH * game.map.getWidth(),
+      TILE_HEIGHT * game.map.getHeight()));
+
+  if (!canvas)
+  {
+    throw sdl_error();
+  }
+
+  SDL_SetRenderTarget(ren_.get(), canvas.get());
+  SDL_SetRenderDrawBlendMode(ren_.get(), SDL_BLENDMODE_NONE);
+  SDL_SetRenderDrawColor(ren_.get(), rand() % 255, rand() % 255, rand() % 255, 255);
+  SDL_RenderClear(ren_.get());
+
+  for (int y = game.map.getTop(); y < game.map.getBottom(); y++)
+  {
+    for (int x = game.map.getLeft(); x < game.map.getRight(); x++)
+    {
+      bool draw = true;
+
+      if ((game.player_x == x && game.player_y == y) && game.renderPlayer)
+      {
+        SDL_SetRenderDrawColor(ren_.get(), 255, 255, 0, 255);
+      } else if (!game.map.at(x,y).lit)
+      {
+        if (drawDark)
+        {
+          SDL_SetRenderDrawColor(ren_.get(), 40, 40, 40, 255);
+        } else {
+          draw = false;
+        }
+      } else {
+        int alpha = 255;
+
+        switch (game.map.at(x,y).tile)
+        {
+          case Tile::Floor:
+          {
+            SDL_SetRenderDrawColor(ren_.get(), 210, 210, 210, alpha);
+            break;
+          }
+
+          case Tile::Wall:
+          {
+            SDL_SetRenderDrawColor(ren_.get(), 100, 100, 100, alpha);
+            break;
+          }
+
+          case Tile::Dust:
+          {
+            SDL_SetRenderDrawColor(ren_.get(), 128, 40, 255, alpha);
+            break;
+          }
+
+          case Tile::Lamp:
+          {
+            SDL_SetRenderDrawColor(ren_.get(), 0, 255, 255, alpha);
+            break;
+          }
+        }
+      }
+
+      if (draw)
+      {
+        SDL_Rect rect {
+          game.map.getTrueX(x) * TILE_WIDTH,
+          game.map.getTrueY(y) * TILE_HEIGHT,
+          TILE_WIDTH,
+          TILE_HEIGHT};
+
+        SDL_RenderFillRect(ren_.get(), &rect);
+      }
+    }
+  }
+
+  texture_ptr mask(
+    SDL_CreateTexture(
+      ren_.get(),
+      SDL_PIXELFORMAT_RGBA8888,
+      SDL_TEXTUREACCESS_TARGET,
+      TILE_WIDTH * game.map.getWidth(),
+      TILE_HEIGHT * game.map.getHeight()));
+
+  if (!mask)
+  {
+    throw sdl_error();
+  }
+
+  SDL_SetRenderTarget(ren_.get(), mask.get());
+  SDL_SetRenderDrawColor(ren_.get(), 0, 0, 0, 0);
+  SDL_RenderClear(ren_.get());
+
+  for (int y = game.map.getTop(); y < game.map.getBottom(); y++)
+  {
+    for (int x = game.map.getLeft(); x < game.map.getRight(); x++)
+    {
+      if (game.map.at(x,y).lightType != Source::None)
+      {
+        texture_ptr sourceMask(
+          SDL_CreateTexture(
+            ren_.get(),
+            SDL_PIXELFORMAT_RGBA8888,
+            SDL_TEXTUREACCESS_TARGET,
+            TILE_WIDTH * game.map.getWidth(),
+            TILE_HEIGHT * game.map.getHeight()));
+
+        if (!sourceMask)
+        {
+          throw sdl_error();
+        }
+
+        SDL_SetRenderTarget(ren_.get(), sourceMask.get());
+        SDL_SetRenderDrawBlendMode(ren_.get(), SDL_BLENDMODE_NONE);
+        SDL_SetRenderDrawColor(ren_.get(), 0, 0, 0, 0);
+        SDL_RenderClear(ren_.get());
+
+        int fadeX = game.map.getTrueX(x) - game.map.at(x,y).lightRadius;
+        int fadeY = game.map.getTrueY(y) - game.map.at(x,y).lightRadius;
+        int fadeRight = game.map.getTrueX(x) + game.map.at(x,y).lightRadius;
+        int fadeBottom = game.map.getTrueY(y) + game.map.at(x,y).lightRadius;
+
+        SDL_Rect fadeRect {
+          fadeX * TILE_WIDTH,
+          fadeY * TILE_HEIGHT,
+          (game.map.at(x,y).lightRadius * 2 + 1) * TILE_WIDTH,
+          (game.map.at(x,y).lightRadius * 2 + 1) * TILE_HEIGHT};
+
+        if (game.map.at(x,y).lightType == Source::Lamp)
+        {
+          SDL_SetTextureBlendMode(lampFade_.get(), SDL_BLENDMODE_NONE);
+          SDL_RenderCopy(ren_.get(), lampFade_.get(), nullptr, &fadeRect);
+        } else if (game.map.at(x,y).lightType == Source::Player) {
+          SDL_SetTextureBlendMode(playerFade_.get(), SDL_BLENDMODE_NONE);
+          SDL_RenderCopy(ren_.get(), playerFade_.get(), nullptr, &fadeRect);
+        } else if (game.map.at(x,y).lightType == Source::Dust) {
+          SDL_SetTextureBlendMode(dustFade_.get(), SDL_BLENDMODE_NONE);
+          SDL_RenderCopy(ren_.get(), dustFade_.get(), nullptr, &fadeRect);
+        }
+
+        SDL_SetRenderDrawColor(ren_.get(), 0, 0, 0, 0);
+
+        for (int sy = fadeY; sy < fadeBottom; sy++)
+        {
+          for (int sx = fadeX; sx < fadeRight; sx++)
+          {
+            if (!game.map.at(x,y).litTiles.count({sx, sy}))
+            {
+              SDL_Rect rect {
+                game.map.getTrueX(sx) * TILE_WIDTH,
+                game.map.getTrueY(sy) * TILE_HEIGHT,
+                TILE_WIDTH,
+                TILE_HEIGHT};
+
+              SDL_RenderFillRect(ren_.get(), &rect);
+            }
+          }
+        }
+
+        SDL_SetRenderTarget(ren_.get(), mask.get());
+        SDL_SetTextureBlendMode(sourceMask.get(), SDL_BLENDMODE_ADD);
+        SDL_RenderCopy(ren_.get(), sourceMask.get(), nullptr, nullptr);
+      }
+    }
+  }
+
+  SDL_SetRenderTarget(ren_.get(), canvas.get());
+  SDL_SetTextureBlendMode(mask.get(), SDL_BLENDMODE_MOD);
+  SDL_RenderCopy(ren_.get(), mask.get(), nullptr, nullptr);
+
+  SDL_SetRenderTarget(ren_.get(), nullptr);
+
+  SDL_Rect zoomRect;
+
+  std::tie(zoomRect.x, zoomRect.y, zoomRect.w, zoomRect.h) =
+    calculateZoomRect(game);
+
+  SDL_RenderCopy(ren_.get(), canvas.get(), &zoomRect, nullptr);
+  SDL_RenderPresent(ren_.get());
+}*/
@@ -0,0 +1,126 @@
+#ifndef RENDERER_H_6A58EC30
+#define RENDERER_H_6A58EC30
+
+#include <SDL.h>
+#include <SDL_image.h>
+#include <stdexcept>
+#include <memory>
+
+class Game;
+
+class sdl_error : public std::logic_error {
+public:
+
+  sdl_error() : std::logic_error(SDL_GetError())
+  {
+  }
+};
+
+class img_error : public std::logic_error {
+public:
+
+  img_error() : std::logic_error(IMG_GetError())
+  {
+  }
+};
+
+class sdl_wrapper {
+public:
+
+  sdl_wrapper()
+  {
+    if (SDL_Init(SDL_INIT_VIDEO) != 0)
+    {
+      sdl_error ex;
+      SDL_Quit();
+
+        throw ex;
+    }
+  }
+
+  ~sdl_wrapper()
+  {
+    SDL_Quit();
+  }
+};
+
+class img_wrapper {
+public:
+
+  img_wrapper()
+  {
+    if (IMG_Init(IMG_INIT_PNG) != IMG_INIT_PNG)
+    {
+      img_error ex;
+      IMG_Quit();
+
+      throw ex;
+    }
+  }
+
+  ~img_wrapper()
+  {
+    IMG_Quit();
+  }
+};
+
+class window_deleter {
+public:
+
+  void operator()(SDL_Window* ptr)
+  {
+    SDL_DestroyWindow(ptr);
+  }
+};
+
+using window_ptr = std::unique_ptr<SDL_Window, window_deleter>;
+
+class renderer_deleter {
+public:
+
+  void operator()(SDL_Renderer* ptr)
+  {
+    SDL_DestroyRenderer(ptr);
+  }
+};
+
+using renderer_ptr = std::unique_ptr<SDL_Renderer, renderer_deleter>;
+
+class surface_deleter {
+public:
+
+  void operator()(SDL_Surface* ptr)
+  {
+    SDL_FreeSurface(ptr);
+  }
+};
+
+using surface_ptr = std::unique_ptr<SDL_Surface, surface_deleter>;
+
+class texture_deleter {
+public:
+
+  void operator()(SDL_Texture* ptr)
+  {
+    SDL_DestroyTexture(ptr);
+  }
+};
+
+using texture_ptr = std::unique_ptr<SDL_Texture, texture_deleter>;
+
+class Renderer {
+public:
+
+  Renderer();
+
+  //void render();
+
+private:
+
+  sdl_wrapper sdl_;
+  img_wrapper img_;
+  window_ptr win_;
+  renderer_ptr ren_;
+};
+
+#endif /* end of include guard: RENDERER_H_6A58EC30 */