lorenzo/sideros
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity Actions

Implemented camera rotation and zooming

Browse source
This commit is contained in:
Lorenzo Torres 2025-08-13 03:44:25 +02:00
parent 68ccaf8b68
commit d537d89819
10 changed files with 153 additions and 18 deletions
Download patch file Download diff file Expand all files Collapse all files

30
src/systems.zig
View file

@ -1,6 +1,7 @@
const ecs = @import("ecs");
const math = @import("math");
const std = @import("std");
const Input = ecs.Input;
pub fn render(pool: *ecs.Pool) anyerror!void {
var renderer = pool.resources.renderer;
@ -32,17 +33,38 @@ pub fn moveCamera(pool: *ecs.Pool) !void {
const input = pool.resources.input;
var camera = pool.resources.camera;
const mul = @as(@Vector(3, f32), @splat(camera.speed * pool.resources.delta_time));
var forward = camera.getDirection();
forward[0] = -forward[0];
forward[1] = 0.0;
const left = math.cross(forward, camera.up);
if (input.isKeyDown(.w)) {
camera.position += @as(@Vector(3, f32), .{0.0, 0.0, 1.0}) * mul;
camera.position += forward * mul;
}
if (input.isKeyDown(.s)) {
camera.position += @as(@Vector(3, f32), .{0.0, 0.0, -1.0}) * mul;
camera.position -= forward * mul;
}
if (input.isKeyDown(.a)) {
camera.position -= @as(@Vector(3, f32), .{1.0, 0.0, 0.0}) * mul;
camera.position += left * mul;
}
if (input.isKeyDown(.d)) {
camera.position += @as(@Vector(3, f32), .{1.0, 0.0, 0.0}) * mul;
camera.position -= left * mul;
}
if (input.isKeyDown(.q)) {
camera.rotateAround(camera.getTarget(), math.rad(100.0 * pool.resources.delta_time));
}
if (input.isKeyDown(.e)) {
camera.rotateAround(camera.getTarget(), math.rad(-100.0 * pool.resources.delta_time));
}
}
pub fn zoomCamera(pool: *ecs.Pool, direction: Input.ScrollDirection) !void {
var camera = pool.resources.camera;
var camera_direction = camera.getDirection();
camera_direction[0] = -camera_direction[0];
if (direction == .up) {
camera.position += camera_direction;
} else {
camera.position -= camera_direction;
}
}