Trying to improve collisions and failing

src/Game.zig

@@ -1,6 +1,7 @@
 const Game = @This();
 const std = @import("std");
 
+const c = @import("const.zig");
 const glfw = @import("zglfw");
 const math = @import("math.zig");
 const shaders = @import("shaders.zig");
@@ -23,6 +24,7 @@ const Textures = @import("assets/Textures.zig");
 const Vector2 = math.Vector2;
 const Vector2x8 = math.Vector2x8;
 const Vector3 = math.Vector3;
+const Vector3Int = math.Vector3Int;
 
 allocator: std.mem.Allocator,
 engine: *Engine,
@@ -591,7 +593,10 @@ pub fn init(allocator: std.mem.Allocator, engine: *Engine, swapchain: *Swapchain
         }
     }
 
-    const player_position = Vector3.init(0, 0, worldgen.heightF(world_seed, .zero) + 0.5);
+    const player_position_vx = Vector3Int.init(0, 0, worldgen.heightI(world_seed, .zero) + 1);
+    const player_position_sv = player_position_vx
+        .mulScalar(c.sv_per_vx)
+        .add(.init(c.sv_per_vx / 2, c.sv_per_vx / 2, 0));
 
     var chunk_it = chunks.iterator();
     while (chunk_it.next()) |entry| {
@@ -655,7 +660,7 @@ pub fn init(allocator: std.mem.Allocator, engine: *Engine, swapchain: *Swapchain
         .chunks = chunks,
         .skybox = skybox,
 
-        .player = .init(player_position, 0, 0),
+        .player = .init(player_position_sv, 0, 0),
     };
 }
 
@@ -757,7 +762,10 @@ fn render(self: *Game) !void {
         @floatFromInt(extent.height),
     );
 
-    const camera_position = self.player.position.add(.init(0, 0, Player.camera_height));
+    const camera_position = self.player.position_sv
+        .asVector3()
+        .divScalar(c.sv_per_vx)
+        .add(.init(0, 0, Player.camera_height_vx));
     const camera_rotation = Quaternion.mulQuaternion(
         .initRotationXY(self.player.yaw_rad),
         .initRotationYZ(self.player.pitch_rad),