Map zoom working

1 files changed, 52 insertions, 7 deletions

diff --git a/src/map.c b/src/map.c
index 9d91202..3b763f0 100644
--- a/src/map.c
+++ b/src/map.c
@@ -21,12 +21,11 @@ void initMap(Map* map, const Settings* settings)
                         settings->mapPreviewHeight},
     .isEnabled = settings->isMapPreviewEnabledDefault,
     .isFullSize = false,
-    .zoom = settings->mapPreviewZoomDefault,
     .playerPosition = Vector2Zero(),
     .playerRotation = 0.0
   };
 
-  zoomMap(map, 10.0);
+  zoomMap(map, settings->mapPreviewZoomDefault);
   repositionMap(map);
 }
 
@@ -35,17 +34,67 @@ void updateMapPreview(Map* map, Game* game)
   const Settings* settings = &game->settings;
   const World* world = &game->world;
 
+  float mouseWheel = GetMouseWheelMove();
+
+  if (mouseWheel != 0.0)
+  {
+    zoomMap(map, Clamp(map->zoom + mouseWheel, MAP_ZOOM_MIN, MAP_ZOOM_MAX));
+  }
+
   // Player position.
   map->playerPosition = (Vector2){
     WORLD_IMAGE_WIDTH / world->size.x * game->player.position.x,
     WORLD_IMAGE_HEIGHT / world->size.z * game->player.position.z
   };
 
+  Vector2 playerPreviewPosition = Vector2Add(
+    (Vector2){map->rect.x, map->rect.y},
+    (Vector2){map->rect.width / 2.0, map->rect.height / 2.0});
+
   map->heightmapRect.x = map->playerPosition.x -
     (map->heightmapRect.width / 2.0);
   map->heightmapRect.y = map->playerPosition.y -
     (map->heightmapRect.height / 2.0);
 
+  // Preview out of bounds.
+  bool outOfX = false;
+  bool outOfY = false;
+  float oldX = map->heightmapRect.x;
+  float oldY = map->heightmapRect.y;
+  
+  if (map->heightmapRect.x + map->heightmapRect.width > WORLD_IMAGE_WIDTH)
+  {
+    map->heightmapRect.x = WORLD_IMAGE_WIDTH - map->heightmapRect.width;
+    outOfX = true;
+  }
+  else if (map->heightmapRect.x < 0.0)
+  {
+    map->heightmapRect.x = 0.0;
+    outOfX = true;
+  }
+  
+  if (map->heightmapRect.y + map->heightmapRect.height > WORLD_IMAGE_HEIGHT)
+  {
+    map->heightmapRect.y = WORLD_IMAGE_HEIGHT - map->heightmapRect.height;
+    outOfY = true;
+  }
+  else if (map->heightmapRect.y < 0.0)
+  {
+    map->heightmapRect.y = 0.0;
+    outOfY = true;
+  }
+
+  if (outOfX)
+  {
+    playerPreviewPosition.x += (oldX - map->heightmapRect.x) *
+      (map->rect.width / map->heightmapRect.width);
+  }
+  if (outOfY)
+  {
+    playerPreviewPosition.y += (oldY - map->heightmapRect.y) *
+      (map->rect.height / map->heightmapRect.height);
+  }
+
   // Draw map.
   DrawTexturePro(world->heightmapTexture,
                  map->heightmapRect,
@@ -55,11 +104,7 @@ void updateMapPreview(Map* map, Game* game)
                  settings->mapColor);
 
   // Draw player.
-  DrawCircleV(Vector2Add((Vector2){map->rect.x, map->rect.y},
-                         (Vector2){map->rect.width / 2.0,
-                                   map->rect.height / 2.0}),
-              3.0,
-              BLUE);
+  DrawCircleV(playerPreviewPosition, 3.0, BLUE);
 
   // Outline.
   DrawRectangleLinesEx(map->rect, 3.0, BLUE);