From b628c80f988c1fb250b94b17dca8e082bc4c1d0b Mon Sep 17 00:00:00 2001
From: Kelly Rauchenberger <fefferburbia@gmail.com>
Date: Tue, 2 Feb 2021 16:51:22 -0500
Subject: Added moving camera

---
 src/renderer.cpp | 27 ++++++++++++++-------------
 1 file changed, 14 insertions(+), 13 deletions(-)

(limited to 'src/renderer.cpp')

diff --git a/src/renderer.cpp b/src/renderer.cpp
index 9d20fee..03d5173 100644
--- a/src/renderer.cpp
+++ b/src/renderer.cpp
@@ -88,13 +88,15 @@ void Renderer::render(Game& game) {
     renLay0_ = renderMapLayer(game.getMap(), 1);
   }
 
+  vec2i mapBounds = game.getMap().getMapSize() * game.getMap().getTileSize();
+
   texture_ptr canvas(
     SDL_CreateTexture(
       ren_.get(),
       SDL_PIXELFORMAT_RGBA8888,
       SDL_TEXTUREACCESS_TARGET,
-      CANVAS_WIDTH,
-      CANVAS_HEIGHT));
+      mapBounds.w(),
+      mapBounds.h()));
 
   if (!canvas) {
     throw sdl_error();
@@ -105,12 +107,7 @@ void Renderer::render(Game& game) {
   SDL_SetRenderDrawColor(ren_.get(), 255, 255, 255, 255);
   SDL_RenderClear(ren_.get());
 
-  vec2i mapBounds = game.getMap().getMapSize() * game.getMap().getTileSize();
-
-  {
-    SDL_Rect dest { -80, -80, mapBounds.w(), mapBounds.h() };
-    SDL_RenderCopy(ren_.get(), renLay1_.get(), nullptr, &dest);
-  }
+  SDL_RenderCopy(ren_.get(), renLay1_.get(), nullptr, nullptr);
 
   for (const Sprite& sprite : game.getSpritesByY() | game.spriteView()) {
     const SpriteFrame& frame = sprite.getFrame();
@@ -119,13 +116,17 @@ void Renderer::render(Game& game) {
     SDL_RenderCopy(ren_.get(), textures_.at(sprite.getTextureId()).get(), &src, &dest);
   }
 
-  {
-    SDL_Rect dest { -80, -80, mapBounds.w(), mapBounds.h() };
-    SDL_RenderCopy(ren_.get(), renLay0_.get(), nullptr, &dest);
-  }
+  SDL_RenderCopy(ren_.get(), renLay0_.get(), nullptr, nullptr);
+
+  SDL_Rect cameraField {
+    game.getCameraPosition().x(),
+    game.getCameraPosition().y(),
+    game.getFieldOfView().w(),
+    game.getFieldOfView().h()
+  };
 
   SDL_SetRenderTarget(ren_.get(), nullptr);
-  SDL_RenderCopy(ren_.get(), canvas.get(), nullptr, nullptr);
+  SDL_RenderCopy(ren_.get(), canvas.get(), &cameraField, nullptr);
   SDL_RenderPresent(ren_.get());
 }
 
-- 
cgit 1.4.1