mirror of
https://github.com/GayPizzaSpecifications/voxelotl-engine.git
synced 2025-08-02 21:00:57 +00:00
143 lines
4.0 KiB
Swift
143 lines
4.0 KiB
Swift
import simd
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struct Instance {
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let position: SIMD3<Float>
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let scale: SIMD3<Float>
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let rotation: simd_quatf
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let color: Color<Float16>
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init(
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position: SIMD3<Float> = .zero,
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scale: SIMD3<Float> = .one,
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rotation: simd_quatf = .identity,
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color: Color<Float16> = .white
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) {
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self.position = position
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self.scale = scale
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self.rotation = rotation
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self.color = color
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}
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}
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class Game: GameDelegate {
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private var fpsCalculator = FPSCalculator()
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var camera = Camera(fov: 60, size: .one, range: 0.06...900)
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var player = Player()
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var projection: matrix_float4x4 = .identity
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var chunk = Chunk(position: .zero)
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func create(_ renderer: Renderer) {
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self.resetPlayer()
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self.generateWorld()
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renderer.clearColor = Color<Double>.black.mix(.white, 0.1).linear
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}
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private func resetPlayer() {
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self.player.position = .init(repeating: 0.5) + .init(0, Float(Chunk.chunkSize), 0)
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self.player.velocity = .zero
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self.player.rotation = .init(.pi, 0)
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}
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private func generateWorld() {
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var random: any RandomProvider
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#if true
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let newSeed = UInt64(Arc4Random.instance.next()) | UInt64(Arc4Random.instance.next()) << 32
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printErr(newSeed)
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random = Xoroshiro128PlusPlus(seed: newSeed)
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#else
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random = PCG32Random(state: (
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UInt64(Arc4Random.instance.next()) | UInt64(Arc4Random.instance.next()) << 32,
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UInt64(Arc4Random.instance.next()) | UInt64(Arc4Random.instance.next()) << 32))
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#endif
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let noise = ImprovedPerlin<Float>(random: &random)
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self.chunk.fill(allBy: { position in
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let fpos = SIMD3<Float>(position)
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return if fpos.y / Float(Chunk.chunkSize)
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+ noise.get(fpos * 0.07) * 0.7
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+ noise.get(fpos * 0.321 + 100) * 0.3 < 0.6 {
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.solid(.init(
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r: Float16(noise.get(fpos * 0.1)),
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g: Float16(noise.get(fpos * 0.1 + 10)),
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b: Float16(noise.get(fpos * 0.1 + 100))).mix(.white, 0.4).linear)
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} else {
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.air
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}
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})
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}
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func fixedUpdate(_ time: GameTime) {
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}
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func update(_ time: GameTime) {
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fpsCalculator.frame(deltaTime: time.delta) { fps in
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print("FPS: \(fps)")
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}
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let deltaTime = min(Float(time.delta.asFloat), 1.0 / 15)
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var destroy = false
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if let pad = GameController.current?.state {
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// Player reset
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if pad.pressed(.back) {
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self.resetPlayer()
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}
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// Regenerate
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if pad.pressed(.start) {
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self.generateWorld()
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}
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}
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if Keyboard.pressed(.r) {
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self.resetPlayer()
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}
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if Keyboard.pressed(.g) {
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self.generateWorld()
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}
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self.player.update(deltaTime: deltaTime, chunk: &chunk)
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self.camera.position = player.eyePosition
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self.camera.rotation = player.eyeRotation
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}
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func draw(_ renderer: Renderer, _ time: GameTime) {
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let totalTime = Float(time.total.asFloat)
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let env = Environment(
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cullFace: .back,
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lightDirection: .init(0.75, -1, 0.5))
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let material = Material(
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ambient: Color(rgba8888: 0x4F4F4F00).linear,
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diffuse: Color(rgba8888: 0xDFDFDF00).linear,
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specular: Color(rgba8888: 0x2F2F2F00).linear,
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gloss: 75)
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var instances = chunk.compactMap { block, position in
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if case let .solid(color) = block.type {
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Instance(
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position: SIMD3<Float>(chunk.position &+ position) + 0.5,
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scale: .init(repeating: 0.5),
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color: color)
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} else { nil }
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}
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instances.append(
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Instance(
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position: player.rayhitPos,
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scale: .init(repeating: 0.0725 * 0.5),
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rotation:
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.init(angle: totalTime * 3.0, axis: .init(0, 1, 0)) *
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.init(angle: totalTime * 1.5, axis: .init(1, 0, 0)) *
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.init(angle: totalTime * 0.7, axis: .init(0, 0, 1)),
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color: .init(r: 0.5, g: 0.5, b: 1).linear))
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if !instances.isEmpty {
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renderer.batch(instances: instances, material: material, environment: env, camera: self.camera)
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}
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}
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func resize(_ size: Size<Int>) {
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self.camera.setSize(size)
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}
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}
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