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const std = @import("std");
const ecs = @import("ecs");
const math = @import("../math.zig");
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,
};
uniform: Uniform,
position: @Vector(3, f32),
target: @Vector(3, f32),
direction: @Vector(3, f32),
right: @Vector(3, f32),
front: @Vector(3, f32),
up: @Vector(3, f32),
speed: f32 = 2.5,
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, 10.0);
}
fn getView(self: Camera) math.Matrix {
math.lookAt(self.position, self.position + self.front, self.up);
}
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);
}
}
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