camera controller

include/phoenix.hpp

@@ -18,5 +18,4 @@ public:
 private:
   bool mb_isOpen = false;
   Map m_currentMap;
-  SDL_Rect m_viewport;
 };

include/state.hpp

@@ -7,6 +7,7 @@
 struct GlobalState {
   SDL_Window *window;
   SDL_Renderer *renderer;
+  SDL_Rect camera;
   PPlayer player;
   PhoenixAssets assets;
   int scale = 20;

maps/dm_scale.map

@@ -2,7 +2,7 @@ MAPNAME DMSCALE
 MAPVERS 1
 MAPAUTH Interfiber
 MAPSIZE 10x10
-MAPSCAL 5x5
+MAPSCAL 2x2
 MAP
 TILE WALL
 TILE FLOOR

src/phoenix.cpp

@@ -34,13 +34,14 @@ PhoenixGame::PhoenixGame() {
   PRunBoostrap();
 
   m_currentMap = PLoadMapFromFile("maps/dm_scale.map");
-  m_viewport = {0, 0, SCREEN_WIDTH / 2, SCREEN_HEIGHT / 2};
+
+  state.camera.x = 0;
+  state.camera.y = 0;
+  state.camera.w = SCREEN_WIDTH;
+  state.camera.h = SCREEN_HEIGHT;
 }
 
-void PhoenixGame::present() {
+void PhoenixGame::present() { SDL_RenderPresent(state.renderer); }
-  SDL_RenderSetViewport(state.renderer, &m_viewport);
-  SDL_RenderPresent(state.renderer);
-}
 
 void PhoenixGame::render() {
 
@@ -90,6 +91,11 @@ void PhoenixGame::run() {
       state.player.x += 5;
     }
 
+    state.camera.x =
+        state.player.x - ((SCREEN_WIDTH / m_currentMap.mapScaleX) / 2);
+    state.camera.y =
+        state.player.y - ((SCREEN_HEIGHT / m_currentMap.mapScaleY) / 2);
+
     // Rendering code
 
     render();

src/texture.cpp

@@ -25,8 +25,8 @@ void PDestroyTexture(PhoenixTexture *texture) {
 
 void PRenderTexture(PhoenixTexture *texture, int x, int y) {
   SDL_Rect dstRect{};
-  dstRect.x = x;
+  dstRect.x = x - state.camera.x;
-  dstRect.y = y;
+  dstRect.y = y - state.camera.y;
   dstRect.w = TEXTURE_WIDTH;
   dstRect.h = TEXTURE_HEIGHT;