Cleaned up rendering module

src/rendering/Camera.zig

@@ -0,0 +1,43 @@
+const std = @import("std");
+const ecs = @import("ecs");
+const math = @import("math");
+
+const Camera = @This();
+const UP = @Vector(3, f32){ 0.0, 1.0, 0.0 };
+
+pub const Uniform = struct {
+    proj: math.Matrix,
+    view: math.Matrix,
+    model: math.Matrix,
+};
+
+position: @Vector(3, f32),
+target: @Vector(3, f32) = .{ 0.0, 0.0, 0.0 },
+front: @Vector(3, f32) = .{ 0.0, 0.0, 1.0 },
+up: @Vector(3, f32) = .{ 0.0, 1.0, 0.0 },
+speed: f32 = 2.5,
+
+pub fn getProjection(width: usize, height: usize) math.Matrix {
+    return math.Matrix.perspective(math.rad(45.0), (@as(f32, @floatFromInt(width)) / @as(f32, @floatFromInt(height))), 0.1, 100.0);
+}
+
+pub fn getView(self: Camera) math.Matrix {
+    return math.Matrix.lookAt(self.position, self.target, self.up);
+}
+
+pub fn moveCamera(pool: *ecs.Pool) void {
+    const input = pool.resources.input;
+    const camera = pool.resources.camera;
+    if (input.isKeyDown(.w)) {
+        camera.position += (camera.front * (camera.speed * pool.resources.delta_time));
+    }
+    if (input.isKeyDown(.s)) {
+        camera.position -= (camera.front * (camera.speed * pool.resources.delta_time));
+    }
+    if (input.isKeyDown(.a)) {
+        camera.position -= math.normalize(math.cross(camera.front, camera.up)) * (camera.speed * pool.resources.delta_time);
+    }
+    if (input.isKeyDown(.d)) {
+        camera.position += math.normalize(math.cross(camera.front, camera.up)) * (camera.speed * pool.resources.delta_time);
+    }
+}