From 5ab72bf802e7a79d6eacded4e985740324c4faa7 Mon Sep 17 00:00:00 2001
From: Star Rauchenberger <fefferburbia@gmail.com>
Date: Tue, 15 Mar 2022 09:54:34 -0400
Subject: started adding zooming anim, looks weird esp when moving

---
 src/game.cpp     | 14 +++++++++++---
 src/game.h       |  8 +++++---
 src/renderer.cpp | 36 +++++++++++++++++++++++++++++++-----
 3 files changed, 47 insertions(+), 11 deletions(-)

(limited to 'src')

diff --git a/src/game.cpp b/src/game.cpp
index beabc55..fc57acc 100644
--- a/src/game.cpp
+++ b/src/game.cpp
@@ -523,8 +523,10 @@ void Game::setZoom(size_t zoom)
     return;
   }
 
-  zoomProgress = 0;
-  zoomLength = std::abs(static_cast<long>(zoom - curZoom)) * TILE_WIDTH;
+  /*zoomProgress = 0;
+  zoomLength = std::abs(static_cast<long>(zoom - curZoom)) * TILE_WIDTH;*/
+  zoomProgress.start(62 * std::abs(static_cast<long>(zoom - curZoom)) * TILE_WIDTH);
+  oldZoom = curZoom;
   curZoom = zoom;
   zooming = true;
   loadMap();
@@ -824,7 +826,7 @@ void Game::update(size_t frameTime) {
     recalculateRender();
   }
 
-  zoomTimer.accumulate(frameTime);
+  /*zoomTimer.accumulate(frameTime);
   while (zoomTimer.step())
   {
     if (zooming)
@@ -836,6 +838,12 @@ void Game::update(size_t frameTime) {
         zooming = false;
       }
     }
+  }*/
+  if (zooming) {
+    zoomProgress.tick(frameTime);
+    if (zoomProgress.isComplete()) {
+      zooming = false;
+    }
   }
 
   playerAnim.update(frameTime);
diff --git a/src/game.h b/src/game.h
index 40ace3d..93ca81a 100644
--- a/src/game.h
+++ b/src/game.h
@@ -78,9 +78,11 @@ public:
 
   int maxZoom = INIT_ZOOM;
   int curZoom = INIT_ZOOM;
+  int oldZoom;
   bool zooming = false;
-  int zoomProgress = 0;
-  int zoomLength;
+  //int zoomProgress = 0;
+  //int zoomLength;
+  Interpolation zoomProgress;
 
   Input keystate;
   bool firstInput = false;
@@ -95,7 +97,7 @@ public:
   Timer inputTimer = {50};
   Timer losePopLampTimer = {800};
   Timer losePopPlayerTimer = {3000};
-  Timer zoomTimer = {62};
+  //Timer zoomTimer = {62};
 
 private:
 
diff --git a/src/renderer.cpp b/src/renderer.cpp
index 21c4746..befad8a 100644
--- a/src/renderer.cpp
+++ b/src/renderer.cpp
@@ -325,16 +325,11 @@ void Renderer::renderGame(
 
   SDL_SetRenderTarget(ren_.get(), nullptr);
 
-  // TODO: this is just moving interp. we also need zoom
   SDL_Rect zoomRect {
     TILE_WIDTH, TILE_HEIGHT, (windowTileWidth - 2) * TILE_WIDTH, (windowTileHeight - 2) * TILE_HEIGHT
   };
 
   if (game.moving) {
-    double interp =
-      static_cast<double>(game.zoomProgress) /
-        static_cast<double>(game.zoomLength);
-
     if (game.player_x > game.player_oldx) {
       zoomRect.x = game.moveProgress.getProgress(0, TILE_WIDTH);
     } else if (game.player_x < game.player_oldx) {
@@ -348,6 +343,37 @@ void Renderer::renderGame(
     }
   }
 
+  if (game.zooming) {
+    int oldWidth = game.oldZoom * ZOOM_X_FACTOR * TILE_WIDTH;
+    int oldHeight = game.oldZoom * ZOOM_Y_FACTOR * TILE_HEIGHT;
+
+    SDL_Rect oldRect {
+      zoomRect.w / 2 - oldWidth / 2,
+      zoomRect.h / 2 - oldHeight / 2,
+      oldWidth,
+      oldHeight
+    };
+
+    if (game.moving) {
+      if (game.player_x > game.player_oldx) {
+        oldRect.x += game.moveProgress.getProgress(0, TILE_WIDTH);
+      } else if (game.player_x < game.player_oldx) {
+        oldRect.x -= game.moveProgress.getProgress(TILE_WIDTH, 0);
+      }
+
+      if (game.player_y > game.player_oldy) {
+        oldRect.y += game.moveProgress.getProgress(0, TILE_HEIGHT);
+      } else if (game.player_y < game.player_oldy) {
+        oldRect.y -= game.moveProgress.getProgress(TILE_HEIGHT, 0);
+      }
+    }
+
+    zoomRect.x = game.zoomProgress.getProgress(oldRect.x, zoomRect.x);
+    zoomRect.y = game.zoomProgress.getProgress(oldRect.y, zoomRect.y);
+    zoomRect.w = game.zoomProgress.getProgress(oldRect.w, zoomRect.w);
+    zoomRect.h = game.zoomProgress.getProgress(oldRect.h, zoomRect.h);
+  }
+
   SDL_RenderCopy(ren_.get(), canvas.get(), &zoomRect, nullptr);
   SDL_RenderPresent(ren_.get());
 }
-- 
cgit 1.4.1