From 1bba633d99d1240ae76c9d800a2ad6e5d1ade056 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Przemys=C5=82aw=20Gasi=C7=B9ski?= <przemek@gasinski.eu>
Date: Wed, 21 Aug 2024 21:08:49 +0200
Subject: [PATCH] Add simple movement for now

---
 src/main.zig            | 24 +++++++++++++++++++++++-
 src/vulkan_renderer.zig |  5 +++++
 2 files changed, 28 insertions(+), 1 deletion(-)

diff --git a/src/main.zig b/src/main.zig
index 7deaab8..5937000 100644
--- a/src/main.zig
+++ b/src/main.zig
@@ -69,8 +69,9 @@ pub fn main() !void {
     delta.start();
 
     var angle: f32 = 0.0;
+    const move_speed: f32 = 1000;
 
-    const model_handle = try vulkan_renderer.createMeshModel("tescoPiwo.obj");
+    const model_handle = try vulkan_renderer.createMeshModel("teapot.obj");
 
     mainLoop: while (true) {
         while (sdl.pollEvent()) |ev| {
@@ -85,6 +86,27 @@ pub fn main() !void {
             }
         }
 
+        const keystate = sdl.getKeyboardState();
+        if (keystate.isPressed(sdl.Scancode.left_shift)) {
+            const move = zm.translation(0.0, -move_speed * delta.delta_f32, 0.0);
+            vulkan_renderer.updateCamera(move);
+        } else if (keystate.isPressed(sdl.Scancode.left_control)) {
+            const move = zm.translation(0.0, move_speed * delta.delta_f32, 0.0);
+            vulkan_renderer.updateCamera(move);
+        } else if (keystate.isPressed(sdl.Scancode.w)) {
+            const move = zm.translation(0.0, 0.0, move_speed * delta.delta_f32);
+            vulkan_renderer.updateCamera(move);
+        } else if (keystate.isPressed(sdl.Scancode.s)) {
+            const move = zm.translation(0.0, 0.0, -move_speed * delta.delta_f32);
+            vulkan_renderer.updateCamera(move);
+        } else if (keystate.isPressed(sdl.Scancode.a)) {
+            const move = zm.translation(move_speed * delta.delta_f32, 0.0, 0.0);
+            vulkan_renderer.updateCamera(move);
+        } else if (keystate.isPressed(sdl.Scancode.d)) {
+            const move = zm.translation(-move_speed * delta.delta_f32, 0.0, 0.0);
+            vulkan_renderer.updateCamera(move);
+        }
+
         delta.tick();
 
         angle += 200.0 * delta.delta_f32;
diff --git a/src/vulkan_renderer.zig b/src/vulkan_renderer.zig
index f6b8b8f..f58728a 100644
--- a/src/vulkan_renderer.zig
+++ b/src/vulkan_renderer.zig
@@ -13,6 +13,7 @@ const QueueFamilyIndices = Utilities.QueueFamilyIndices;
 const SwapchainDetails = Utilities.SwapchainDetails;
 const SwapchainImage = Utilities.SwapchainImage;
 const Vertex = Utilities.Vertex;
+const Vector3 = Utilities.Vector3;
 
 const Mesh = @import("Mesh.zig");
 const MeshModel = @import("MeshModel.zig");
@@ -195,6 +196,10 @@ pub const VulkanRenderer = struct {
         }
     }
 
+    pub fn updateCamera(self: *Self, movement: zm.Mat) void {
+        self.ubo_view_projection.view = zm.mul(self.ubo_view_projection.view, movement);
+    }
+
     pub fn draw(self: *Self) !void {
         // Wait for given fence to signal (open) from last draw before continuing
         _ = try self.device.waitForFences(