duck-that-quacks/spacefarer
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rotateTowards, key store, camera faces Z-, CCW frontface

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duck
2025-05-28 01:22:18 +05:00
parent 1e454ba428
commit 5fc8358aa7
9 changed files with 183 additions and 101 deletions
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40
src/debug_scene.zig
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@@ -1,5 +1,6 @@
const std = @import("std");
const sdl = @import("sdl");
const Transform = @import("graphics/transform.zig");
const Controller = @import("graph/controller.zig");
const Graphics = @import("graphics.zig");
const Game = @import("game.zig");
@@ -70,35 +71,48 @@ pub fn init(controller: *Controller, graphics: *Graphics) !void {
pub fn deinit() void {}
pub fn update(
cube: *Cube,
mouse: *Game.Mouse,
keyboard: *Game.Keyboard,
graphics: *Graphics,
time: *Game.Time,
) void {
if (keyboard.is_pressed(sdl.SCANCODE_W)) {
graphics.camera.transform.translateLocal(.{ 0.0, 0.0, 5.0 * time.delta });
}
if (keyboard.is_pressed(sdl.SCANCODE_S)) {
if (keyboard.keys.is_pressed(sdl.SCANCODE_W)) {
graphics.camera.transform.translateLocal(.{ 0.0, 0.0, -5.0 * time.delta });
}
if (keyboard.is_pressed(sdl.SCANCODE_D)) {
if (keyboard.keys.is_pressed(sdl.SCANCODE_S)) {
graphics.camera.transform.translateLocal(.{ 0.0, 0.0, 5.0 * time.delta });
}
if (keyboard.keys.is_pressed(sdl.SCANCODE_D)) {
graphics.camera.transform.translateLocal(.{ 5.0 * time.delta, 0.0, 0.0 });
}
if (keyboard.is_pressed(sdl.SCANCODE_A)) {
if (keyboard.keys.is_pressed(sdl.SCANCODE_A)) {
graphics.camera.transform.translateLocal(.{ -5.0 * time.delta, 0.0, 0.0 });
}
if (@abs(mouse.dx) < 0.01 and @abs(mouse.dy) < 0.01) return;
if (mouse.buttons.is_pressed(sdl.BUTTON_LEFT)) {
const scale = 1.0 / @as(f32, @floatFromInt(graphics.window_size[1]));
cube.transform.position[0] += mouse.dx * scale * 4.0;
cube.transform.position[1] -= mouse.dy * scale * 4.0;
const delta, const length = Graphics.Transform.extractNormal(.{ mouse.dy, mouse.dx, 0.0 });
const rot = Graphics.Transform.rotationByAxis(
delta,
length * std.math.pi / @as(f32, @floatFromInt(graphics.window_size[1])) * 2.0,
);
graphics.camera.transform.rotateLocal(rot);
const ORIGIN_DIR = @Vector(3, f32){ 0.0, 0.0, -1.0 };
const INIT_ROTATION = Transform.rotationByAxis(.{ 1.0, 0.0, 0.0 }, std.math.pi * 0.5);
const ROTATED_DIR = Transform.rotateVector(ORIGIN_DIR, INIT_ROTATION);
graphics.camera.transform.rotation = Transform.combineRotations(
INIT_ROTATION,
Transform.rotationToward(ROTATED_DIR, cube.transform.position - graphics.camera.transform.position, .{ .normalize_to = true }),
);
}
}
pub fn draw(cube: *Cube, graphics: *Graphics) !void {
try graphics.drawMesh(cube.mesh, Graphics.Transform{
.position = .{ 0.0, 0.0, 0.0 },
.rotation = cube.transform.rotation,
.scale = cube.transform.scale,
});
for (OFFSETS) |offset| {
try graphics.drawMesh(cube.mesh, Graphics.Transform{
.position = cube.transform.position + offset,