From ed94f77323183a091e4fdabf53b002b6b44d81ad Mon Sep 17 00:00:00 2001
From: Amatsugu <khamraj@kaisei.app>
Date: Thu, 2 May 2024 22:11:40 -0400
Subject: [PATCH] rts camera

center camera
spawn basic water
fix generator config
set camera bounds
---
 engine/world_generation/src/heightmap.rs | 14 ++-----
 engine/world_generation/src/lib.rs       | 22 +++++++++-
 game/camera_system/src/lib.rs            | 52 ++++++++++++++++++++----
 game/camera_system/src/prelude.rs        | 32 ++++++++++++++-
 game/main/src/map_init.rs                | 43 +++++++++++++-------
 5 files changed, 127 insertions(+), 36 deletions(-)

diff --git a/engine/world_generation/src/heightmap.rs b/engine/world_generation/src/heightmap.rs
index 16b95e2..7e56568 100644
--- a/engine/world_generation/src/heightmap.rs
+++ b/engine/world_generation/src/heightmap.rs
@@ -19,6 +19,7 @@ pub fn generate_heightmap(cfg: &GenerationConfig, seed: u32) -> Map {
 		chunks,
 		height: cfg.size.y as usize,
 		width: cfg.size.x as usize,
+		sea_level: cfg.sea_level as f32,
 	};
 }
 
@@ -40,12 +41,8 @@ pub fn generate_chunk(chunk_x: f64, chunk_z: f64, cfg: &GenerationConfig, seed:
 				(x as f64 + chunk_x * Chunk::SIZE as f64) / &cfg.noise_scale,
 				(z as f64 + chunk_z * Chunk::SIZE as f64) / &cfg.noise_scale,
 			]) as f32;
-			temp[x + z * Chunk::SIZE] = sample_tempurature(
-				z as f32 + chunk_z as f32 * Chunk::SIZE as f32,
-				sample,
-				&cfg,
-				100.,
-			);
+			temp[x + z * Chunk::SIZE] =
+				sample_tempurature(z as f32 + chunk_z as f32 * Chunk::SIZE as f32, sample, &cfg, 100.);
 		}
 	}
 	return Chunk {
@@ -95,10 +92,7 @@ fn sample_point(x: f64, z: f64, cfg: &GenerationConfig, noise: &impl NoiseFn<f64
 	let d1 = p.x.min(p.y);
 	let od = outer - p;
 	let d2 = od.x.min(od.y);
-	let d = d1
-		.min(d2)
-		.min(cfg.border_size)
-		.remap(0., cfg.border_size, 0., 1.);
+	let d = d1.min(d2).min(cfg.border_size).remap(0., cfg.border_size, 0., 1.);
 
 	return (elevation as f32) * d;
 }
diff --git a/engine/world_generation/src/lib.rs b/engine/world_generation/src/lib.rs
index 2696ddd..925f8f0 100644
--- a/engine/world_generation/src/lib.rs
+++ b/engine/world_generation/src/lib.rs
@@ -8,7 +8,7 @@ pub mod tile_manager;
 pub mod tile_mapper;
 
 pub mod prelude {
-	use crate::hex_utils::{HexCoord, INNER_RADIUS, OUTER_RADIUS};
+	use crate::hex_utils::{tile_to_world_distance, HexCoord, INNER_RADIUS, OUTER_RADIUS};
 	use bevy::math::{IVec2, UVec2, Vec2, Vec3};
 	use bevy::prelude::Resource;
 	use bevy::prelude::*;
@@ -84,6 +84,7 @@ pub mod prelude {
 		pub chunks: Vec<Chunk>,
 		pub height: usize,
 		pub width: usize,
+		pub sea_level: f32,
 	}
 
 	impl Map {
@@ -105,7 +106,7 @@ pub mod prelude {
 			return results;
 		}
 
-		pub fn get_height(&self, pos: &HexCoord) -> f32 {
+		pub fn sample_height(&self, pos: &HexCoord) -> f32 {
 			let chunk = &self.chunks[pos.to_chunk_index(self.width)];
 			return chunk.heights[pos.to_chunk_local_index()];
 		}
@@ -119,6 +120,23 @@ pub mod prelude {
 			let chunk = &self.chunks[pos.to_chunk_index(self.width)];
 			return chunk.temperature[pos.to_chunk_local_index()];
 		}
+
+		pub fn get_center(&self) -> Vec3 {
+			let w = self.width * Chunk::SIZE;
+			let h = self.height * Chunk::SIZE;
+			return Vec3::new(
+				tile_to_world_distance(w as i32 / 2),
+				self.sea_level,
+				tile_to_world_distance(h as i32 / 2),
+			);
+		}
+
+		pub fn get_world_width(&self) -> f32 {
+			return tile_to_world_distance((self.width * Chunk::SIZE) as i32);
+		}
+		pub fn get_world_height(&self) -> f32 {
+			return tile_to_world_distance((self.height * Chunk::SIZE) as i32);
+		}
 	}
 	pub const ATTRIBUTE_PACKED_VERTEX_DATA: MeshVertexAttribute =
 		MeshVertexAttribute::new("PackedVertexData", 988540817, VertexFormat::Uint32);
diff --git a/game/camera_system/src/lib.rs b/game/camera_system/src/lib.rs
index 4cb20f3..97a3eff 100644
--- a/game/camera_system/src/lib.rs
+++ b/game/camera_system/src/lib.rs
@@ -1,9 +1,10 @@
 use crate::prelude::PhosCamera;
 use bevy::core_pipeline::experimental::taa::{TemporalAntiAliasBundle, TemporalAntiAliasPlugin};
-use bevy::input::mouse::MouseMotion;
+use bevy::input::mouse::{MouseMotion, MouseScrollUnit, MouseWheel};
 use bevy::pbr::ScreenSpaceAmbientOcclusionBundle;
 use bevy::prelude::*;
 use bevy::window::CursorGrabMode;
+use prelude::{CameraBounds, PhosCameraTargets};
 
 pub mod prelude;
 
@@ -11,8 +12,12 @@ pub struct PhosCameraPlugin;
 
 impl Plugin for PhosCameraPlugin {
 	fn build(&self, app: &mut App) {
-		app.add_systems(Startup, setup)
-			.add_systems(Update, (grab_mouse, (update_camera, update_camera_mouse).chain()));
+		app.add_systems(PreStartup, setup);
+
+		app.add_systems(Update, (rts_camera_system, apply_camera_height).chain());
+		app.add_systems(PostUpdate, limit_camera_bounds);
+		//Free Cam
+		//app.add_systems(Update, (grab_mouse, (update_camera, update_camera_mouse).chain()));
 
 		app.add_plugins(TemporalAntiAliasPlugin);
 	}
@@ -22,13 +27,16 @@ fn setup(mut commands: Commands, mut msaa: ResMut<Msaa>) {
 	commands
 		.spawn((
 			Camera3dBundle {
-				transform: Transform::from_xyz(0., 30., 0.).looking_at(Vec3::new(1000., 0., 1000.), Vec3::Y),
+				transform: Transform::from_xyz(0., 30., 0.)
+					.with_rotation(Quat::from_axis_angle(Vec3::Y, (-90 as f32).to_radians())),
 				..default()
 			},
 			PhosCamera {
 				speed: 100.,
+				zoom_speed: 20.,
 				..default()
 			},
+			PhosCameraTargets::default(),
 		))
 		.insert(ScreenSpaceAmbientOcclusionBundle::default())
 		.insert(TemporalAntiAliasBundle::default());
@@ -119,17 +127,18 @@ fn grab_mouse(mut windows: Query<&mut Window>, mouse: Res<ButtonInput<MouseButto
 }
 
 fn rts_camera_system(
-	mut cam_query: Query<(&mut Transform, &PhosCamera)>,
+	mut cam_query: Query<(&mut Transform, &PhosCamera, &mut PhosCameraTargets)>,
 	key: Res<ButtonInput<KeyCode>>,
 	time: Res<Time>,
+	mut wheel: EventReader<MouseWheel>,
 ) {
-	let (mut cam, cam_cfg) = cam_query.single_mut();
+	let (mut cam, cam_cfg, mut cam_targets) = cam_query.single_mut();
 	let mut cam_move = Vec3::ZERO;
 
 	if key.pressed(KeyCode::KeyA) {
-		cam_move.x = -1.;
-	} else if key.pressed(KeyCode::KeyD) {
 		cam_move.x = 1.;
+	} else if key.pressed(KeyCode::KeyD) {
+		cam_move.x = -1.;
 	}
 
 	if key.pressed(KeyCode::KeyW) {
@@ -138,5 +147,30 @@ fn rts_camera_system(
 		cam_move.z = -1.;
 	}
 
-	cam.translation += cam_move.normalize() * cam_cfg.speed * time.delta_seconds();
+	let fwd = cam.forward();
+	let fwd_quat = Quat::from_rotation_arc(Vec3::Z, fwd.into());
+	cam_move = fwd_quat.mul_vec3(cam_move.normalize_or_zero()) * cam_cfg.speed * time.delta_seconds();
+
+	for e in wheel.read() {
+		match e.unit {
+			MouseScrollUnit::Line => cam_targets.height -= e.y * 20.,
+			MouseScrollUnit::Pixel => cam_targets.height -= e.y,
+		}
+	}
+
+	cam_targets.height = cam_targets.height.clamp(cam_cfg.min_height, cam_cfg.max_height);
+
+	cam.translation += cam_move;
+}
+
+fn apply_camera_height(mut cam_query: Query<(&mut Transform, &PhosCamera, &mut PhosCameraTargets)>, time: Res<Time>) {
+	let (mut cam_t, cam_cfg, targets) = cam_query.single_mut();
+
+	let movement = (cam_t.translation.y - targets.height) * time.delta_seconds();
+
+	cam_t.translation.y -= movement;
+}
+
+fn limit_camera_bounds(mut cam_query: Query<(&mut Transform, &CameraBounds)>) {
+	
 }
diff --git a/game/camera_system/src/prelude.rs b/game/camera_system/src/prelude.rs
index ae51313..64e7b31 100644
--- a/game/camera_system/src/prelude.rs
+++ b/game/camera_system/src/prelude.rs
@@ -1,14 +1,44 @@
 use bevy::prelude::*;
 
-#[derive(Component, Default)]
+#[derive(Component)]
 pub struct PhosCamera {
 	pub min_height: f32,
 	pub max_height: f32,
 	pub speed: f32,
 	pub zoom_speed: f32,
+	pub min_angle: f32,
+	pub max_angle: f32,
 }
 
+impl Default for PhosCamera {
+	fn default() -> Self {
+		Self {
+			min_height: 10.,
+			max_height: 100.,
+			speed: 20.,
+			zoom_speed: 20.,
+			min_angle: 10.,
+			max_angle: 80.,
+		}
+	}
+}
+
+#[derive(Component, Default)]
+pub struct PhosCameraTargets {
+	pub height: f32,
+}
+
+#[derive(Component, Default)]
 pub struct CameraBounds {
 	pub min: Vec2,
 	pub max: Vec2,
 }
+
+impl CameraBounds {
+	pub fn from_size(size: UVec2) -> Self {
+		return Self {
+			min: Vec2::ZERO,
+			max: size.as_vec2(),
+		};
+	}
+}
diff --git a/game/main/src/map_init.rs b/game/main/src/map_init.rs
index 99922fb..002721c 100644
--- a/game/main/src/map_init.rs
+++ b/game/main/src/map_init.rs
@@ -1,7 +1,7 @@
 use bevy::{asset::LoadState, pbr::ExtendedMaterial, prelude::*};
 use bevy_inspector_egui::quick::ResourceInspectorPlugin;
 use bevy_rapier3d::geometry::{Collider, TriMeshFlags};
-use camera_system::prelude::PhosCamera;
+use camera_system::prelude::{CameraBounds, PhosCamera};
 use rayon::iter::{IntoParallelRefIterator, ParallelIterator};
 use world_generation::{
 	biome_painter::*,
@@ -29,7 +29,8 @@ impl Plugin for MapInitPlugin {
 			ResourceInspectorPlugin::<GenerationConfig>::default(),
 		));
 
-		app.add_systems(Startup, (load_textures, load_tiles, create_map));
+		app.add_systems(Startup, (load_textures, load_tiles));
+		app.add_systems(PostStartup, create_map);
 
 		app.add_systems(Update, finalize_texture);
 		app.add_systems(PostUpdate, (despawn_map, spawn_map).chain());
@@ -87,13 +88,13 @@ fn finalize_texture(
 	map.regenerate = true;
 }
 
-fn create_map(mut commands: Commands, mut cam: Query<&mut Transform, With<PhosCamera>>) {
+fn create_map(mut commands: Commands, mut cam: Query<(&mut Transform, Entity), With<PhosCamera>>) {
 	let config = GenerationConfig {
 		layers: vec![
 			GeneratorLayer {
 				base_roughness: 2.14,
 				roughness: 0.87,
-				strength: 2.93,
+				strength: 8.3,
 				min_value: -0.2,
 				persistence: 0.77,
 				is_rigid: false,
@@ -117,7 +118,7 @@ fn create_map(mut commands: Commands, mut cam: Query<&mut Transform, With<PhosCa
 			GeneratorLayer {
 				base_roughness: 2.6,
 				roughness: 4.,
-				strength: 4.3,
+				strength: 3.1,
 				min_value: 0.,
 				persistence: 1.57,
 				is_rigid: true,
@@ -148,7 +149,7 @@ fn create_map(mut commands: Commands, mut cam: Query<&mut Transform, With<PhosCa
 				weight: 1.,
 				weight_multi: 4.57,
 				layers: 3,
-				first_layer_mask: true,
+				first_layer_mask: false,
 			},
 		],
 		noise_scale: 450.,
@@ -161,12 +162,14 @@ fn create_map(mut commands: Commands, mut cam: Query<&mut Transform, With<PhosCa
 
 	commands.insert_resource(heightmap);
 
-	// let mut cam_t = cam.single_mut();
-	// cam_t.translation = Vec3::new(
-	// 	tile_to_world_distance(config.size.x as i32 / 2),
-	// 	cam_t.translation.y,
-	// 	tile_to_world_distance(config.size.y as i32 / 2),
-	// );
+	let (mut cam_t, cam_entity) = cam.single_mut();
+	cam_t.translation = Vec3::new(
+		tile_to_world_distance((config.size.x as i32 * Chunk::SIZE as i32) / 2),
+		cam_t.translation.y,
+		tile_to_world_distance((config.size.y as i32 * Chunk::SIZE as i32) / 2),
+	);
+
+	commands.entity(cam_entity).insert(CameraBounds::from_size(config.size));
 
 	commands.insert_resource(config);
 }
@@ -174,7 +177,8 @@ fn create_map(mut commands: Commands, mut cam: Query<&mut Transform, With<PhosCa
 fn spawn_map(
 	heightmap: Res<Map>,
 	mut commands: Commands,
-	mut materials: ResMut<Assets<ExtendedMaterial<StandardMaterial, ChunkMaterial>>>,
+	mut chunk_materials: ResMut<Assets<ExtendedMaterial<StandardMaterial, ChunkMaterial>>>,
+	mut standard_materials: ResMut<Assets<StandardMaterial>>,
 	mut meshes: ResMut<Assets<Mesh>>,
 	atlas: Res<ChunkAtlas>,
 	mut map: ResMut<PhosMap>,
@@ -188,7 +192,7 @@ fn spawn_map(
 	}
 	let b_painter = biome_painters.get(painter.0.clone());
 	map.regenerate = false;
-	let chunk_material = materials.add(ExtendedMaterial {
+	let chunk_material = chunk_materials.add(ExtendedMaterial {
 		base: StandardMaterial::default(),
 		extension: ChunkMaterial {
 			array_texture: atlas.handle.clone(),
@@ -228,6 +232,17 @@ fn spawn_map(
 			Collider::trimesh_with_flags(col_verts, col_indicies, TriMeshFlags::MERGE_DUPLICATE_VERTICES),
 		));
 	}
+
+	commands.spawn((PbrBundle {
+		transform: Transform::from_translation(heightmap.get_center()),
+		mesh: meshes.add(Plane3d::default().mesh().size(heightmap.get_world_width(), heightmap.get_world_height())),
+		material: standard_materials.add(StandardMaterial {
+			base_color: Color::AQUAMARINE.with_a(0.5),
+			alpha_mode: AlphaMode::Blend,
+			..default()
+		}),
+		..default()
+	},));
 }
 
 fn despawn_map(