From 7cd515fcfa1a5aac5605fcc63381033563fbf5d7 Mon Sep 17 00:00:00 2001
From: Star Rauchenberger <fefferburbia@gmail.com>
Date: Mon, 14 Mar 2022 14:11:05 -0400
Subject: map is now "infinite" using chunks that dynamically load like in
 diamond&pearl

game is also slow as shit now
---
 src/game.cpp | 123 ++++++++++++++++++-----------------------------------------
 1 file changed, 37 insertions(+), 86 deletions(-)

(limited to 'src/game.cpp')

diff --git a/src/game.cpp b/src/game.cpp
index a7c94db..62e755b 100644
--- a/src/game.cpp
+++ b/src/game.cpp
@@ -8,25 +8,11 @@
 
 Game::Game(std::mt19937& rng, Muxer& muxer) :
   rng(rng),
-  muxer(muxer),
-  map(
-    -INIT_ZOOM * ZOOM_X_FACTOR / 2,
-    -INIT_ZOOM * ZOOM_Y_FACTOR / 2,
-    INIT_ZOOM * ZOOM_X_FACTOR,
-    INIT_ZOOM * ZOOM_Y_FACTOR)
+  muxer(muxer)
 {
   losePopLampTimer.accumulate(losePopLampTimer.getDt());
 
-  for (MapData& md : map.data())
-  {
-    if (std::bernoulli_distribution(0.5)(rng))
-    {
-      md.tile = Tile::Wall;
-    }
-  }
-
-  tick();
-  tick();
+  loadMap();
 
   for (int y = -1; y <= 1; y++)
   {
@@ -39,12 +25,12 @@ Game::Game(std::mt19937& rng, Muxer& muxer) :
   tick();
 }
 
-inline bool isTileSetOrNotLit(const Map<MapData>& map, int x, int y)
+inline bool isTileSetOrNotLit(const Map& map, int x, int y)
 {
   return (map.inBounds(x, y) && (map.at(x,y).tile == Tile::Wall || !map.at(x,y).lit));
 }
 
-inline bool isTileSet(const Map<MapData>& map, int x, int y, Tile val = Tile::Wall)
+inline bool isTileSet(const Map& map, int x, int y, Tile val = Tile::Wall)
 {
   return (map.inBounds(x, y) && map.at(x,y).tile == val);
 }
@@ -69,7 +55,7 @@ void Game::tick(
   bool invert,
   bool onlyDark)
 {
-  Map<MapData> temp(map);
+  std::vector<MapData> temp(map.data());
 
   for (int y = map.getTop(); y < map.getBottom(); y++)
   {
@@ -102,21 +88,22 @@ void Game::tick(
       incrementIfSet(*this, count, x+1, y  );
       incrementIfSet(*this, count, x+1, y+1);
 
+      int tempIndex = map.getTrueX(x) + map.getTrueY(y) * map.getWidth();
       if (count >= 5)
       {
-        temp.at(x,y).tile = Tile::Wall;
+        temp[tempIndex].tile = Tile::Wall;
       } else {
-        temp.at(x,y).tile = Tile::Floor;
+        temp[tempIndex].tile = Tile::Floor;
       }
 
-      if (temp.at(x,y).tile != map.at(x,y).tile) {
-        temp.at(x,y).dirtyRender = true;
+      if (temp[tempIndex].tile != map.at(x,y).tile) {
+        temp[tempIndex].dirtyRender = true;
         dirtyRender = true;
       }
     }
   }
 
-  map = std::move(temp);
+  map.data() = std::move(temp);
 }
 
 void Game::tick(bool onlyDark)
@@ -132,10 +119,10 @@ void Game::tick(bool onlyDark)
 
 bool Game::movePlayer(int x, int y)
 {
-  if (x >= curBoundX &&
+  if (/*x >= curBoundX &&
       y >= curBoundY &&
       x < curBoundX + curZoom * ZOOM_X_FACTOR &&
-      y < curBoundY + curZoom * ZOOM_Y_FACTOR &&
+      y < curBoundY + curZoom * ZOOM_Y_FACTOR &&*/
       map.at(x,y).tile == Tile::Floor)
   {
     if (map.at(player_x, player_y).tile == Tile::Floor)
@@ -154,6 +141,13 @@ bool Game::movePlayer(int x, int y)
     moveProgress.start(66);
     dirtyLighting = true;
 
+    int chunkX, chunkY, old_chunkX, old_chunkY;
+    toChunkPos(player_x, player_y, chunkX, chunkY);
+    toChunkPos(player_oldx, player_oldy, old_chunkX, old_chunkY);
+    if ((chunkX != old_chunkX) || (chunkY != old_chunkY)) {
+      loadMap();
+    }
+
     return true;
   } else {
     if (!alreadyBumped) {
@@ -501,39 +495,25 @@ void Game::processKickup()
     });
 }
 
-void Game::growMap(size_t zoom)
-{
-  int ol = map.getLeft();
-  int ot = map.getTop();
-  int ow = map.getWidth();
-  int oh = map.getHeight();
+void Game::loadMap() {
+  int newChunksHoriz = std::ceil(static_cast<double>(curZoom) * ZOOM_X_FACTOR / CHUNK_WIDTH) + 4;
+  int newChunksVert = std::ceil(static_cast<double>(curZoom) * ZOOM_Y_FACTOR / CHUNK_HEIGHT) + 4;
+  int curPlayerChunkX, curPlayerChunkY;
+  toChunkPos(player_x, player_y, curPlayerChunkX, curPlayerChunkY);
 
-  map.resize(
-    -zoom * ZOOM_X_FACTOR / 2,
-    -zoom * ZOOM_Y_FACTOR / 2,
-    zoom * ZOOM_X_FACTOR,
-    zoom * ZOOM_Y_FACTOR);
+  map.load(
+    curPlayerChunkX - newChunksHoriz / 2,
+    curPlayerChunkY - newChunksVert / 2,
+    newChunksHoriz,
+    newChunksVert,
+    rng);
 
-  maxZoom = zoom;
-
-  for (int y = map.getTop(); y < map.getBottom(); y++)
-  {
-    for (int x = map.getLeft(); x < map.getRight(); x++)
-    {
-      if (!(x >= ol && x < (ol + ow) && y >= ot && y < (ot + oh)))
-      {
-        if (std::bernoulli_distribution(0.5)(rng))
-        {
-          map.at(x,y).tile = Tile::Wall;
-        }
-      }
-    }
-  }
+  tick();
+  tick();
+  tick();
 
-  for (int i = 0; i < 3; i++)
-  {
-    tick(ol, ot, ol + ow, ot + oh, true);
-  }
+  dirtyLighting = true;
+  dirtyRender = true;
 }
 
 void Game::setZoom(size_t zoom)
@@ -543,40 +523,11 @@ void Game::setZoom(size_t zoom)
     return;
   }
 
-  if (zoom > maxZoom)
-  {
-    growMap(zoom);
-  }
-
-  std::tie(
-    lastZoomLeft,
-    lastZoomTop,
-    lastZoomWidth,
-    lastZoomHeight) =
-      Renderer::calculateZoomRect(*this);
-
   zoomProgress = 0;
   zoomLength = std::abs(static_cast<long>(zoom - curZoom)) * TILE_WIDTH;
   curZoom = zoom;
   zooming = true;
-
-  curBoundX = player_x - zoom * ZOOM_X_FACTOR / 2;
-  if (curBoundX < map.getLeft())
-  {
-    curBoundX = map.getLeft();
-  } else if (curBoundX + zoom * ZOOM_X_FACTOR >= map.getRight())
-  {
-    curBoundX = map.getRight() - zoom * ZOOM_X_FACTOR;
-  }
-
-  curBoundY = player_y - zoom * ZOOM_Y_FACTOR / 2;
-  if (curBoundY < map.getTop())
-  {
-    curBoundY = map.getTop();
-  } else if (curBoundY + zoom * ZOOM_Y_FACTOR >= map.getBottom())
-  {
-    curBoundY = map.getBottom() - zoom * ZOOM_Y_FACTOR;
-  }
+  loadMap();
 
   int zoomLevel = getZoomLevel(*this);
   if (zoomLevel == 0) {
-- 
cgit 1.4.1