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b/src/main.rs new file mode 100644 index 0000000..4373c8f --- /dev/null +++ b/src/main.rs @@ -0,0 +1,43 @@ +use log::LevelFilter; +use raylib::prelude::*; + +mod player; +mod world; +mod renderer; + +pub const VEL: f32 = 20000.0; + +fn main() { + env_logger::builder() + .filter_level(LevelFilter::Trace) + .init(); + let mut rend = renderer::Renderer::init(); + + let surface_level = 16; + + let mut world = world::World::new(); + world.generate_new(surface_level); + + let mut player = player::Player::new((0.0, (surface_level+1) as f32).into()); + + log::info!("Started up!"); + while !rend.should_close() { + let dt = rend.get_delta_time() / 1000.0; + if rend.raylib.0.is_key_down(KeyboardKey::KEY_A) { + player.vel.x = VEL; + } + if rend.raylib.0.is_key_down(KeyboardKey::KEY_D) { + player.vel.x = -VEL; + } + + if rend.raylib.0.is_key_down(KeyboardKey::KEY_SPACE) && world.is_on_ground(player.pos){ + player.vel.y = VEL; + } + + player.calc_phisics(&world, dt); + + // log::debug!("VEL: {:?}", player.vel); + + rend.draw_world(&world, &player); + } +} diff --git a/src/player/mod.rs b/src/player/mod.rs new file mode 100644 index 0000000..b66a682 --- /dev/null +++ b/src/player/mod.rs @@ -0,0 +1,36 @@ +use raylib::math::Vector2; + +use crate::world::World; + + + +#[derive(Debug)] +pub struct Player { + pub pos: Vector2, + pub vel: Vector2 +} + +impl Player { + pub fn new(pos: Vector2) -> Self { + Self { pos, vel: (0.0, 0.0).into() } + } + + pub fn calc_phisics(&mut self, world: &World, dt: f32) { + self.pos += self.vel * dt; + + self.vel.x *= 0.7; + self.vel.y *= 0.7; + if self.vel.x.abs() < 1.0 { + self.vel.x = 0.0; + } + if self.vel.y.abs() < 1.0 { + self.vel.y = 0.0; + } + + self.check_collisions(world); + } + + fn check_collisions(&mut self, world: &World) { + + } +} diff --git a/src/renderer/mod.rs b/src/renderer/mod.rs new file mode 100644 index 0000000..9a66a74 --- /dev/null +++ b/src/renderer/mod.rs @@ -0,0 +1,76 @@ + +use raylib::{math::Vector2, prelude::*}; +use crate::{player::Player, world::{chunk::CHUNK_WIDTH, id::BlockId, World}}; + +const SCREEN_BLOCK_WIDTH: f32 = 64.0; + +pub struct Renderer { + pub raylib: (RaylibHandle, RaylibThread), +} + +impl Renderer { + pub fn init() -> Self { + let (rl, thread) = raylib::init() + .vsync() + .msaa_4x() + .resizable() + .size(640, 480) + .title("Minecwaft :3") + .log_level(raylib::ffi::TraceLogLevel::LOG_NONE) + .build(); + Self { raylib: (rl, thread) } + } + + pub fn should_close(&self) -> bool { + self.raylib.0.window_should_close() + } + + pub fn draw_world(&mut self, world: &World, player: &Player) { + let (rl, thread) = &mut self.raylib; + let scrn_wh: Vector2 = (rl.get_screen_width() as f32, rl.get_screen_height() as f32).into(); + + let mut rl_draw = rl.begin_drawing(&thread); + rl_draw.clear_background(Color::BLUE); + + let block_wh = scrn_wh.x as f32 / SCREEN_BLOCK_WIDTH; + // let player_pos: Vector2; + { // Player + let scrn_mid: Vector2 = ((scrn_wh.x/2.0) as f32, (scrn_wh.y/2.0) as f32).into(); + // player_pos = (scrn_mid.x + block_wh/2.0, scrn_mid.y).into(); + let player_draw_pos: Vector2 = (scrn_mid.x + block_wh/2.0, scrn_mid.y + block_wh*2.0).into(); + + let player_sz = Vector2::new(block_wh, block_wh*2.0); + rl_draw.draw_rectangle_v(player_draw_pos, player_sz, Color::PINK); + } + + { // World + let block_sz = Vector2::new(block_wh, block_wh); + + for (chunk_x, chunk) in world.chunks() { + for ((rel_x, block_y), block) in chunk.blocks() { + let block_x = (*chunk_x * CHUNK_WIDTH as isize) + *rel_x as isize; + + let block_y = (*block_y as f32 - 1.0) + player.pos.y; + let block_x = (block_x as f32) + player.pos.x; + + let real_x = block_x as f32 * block_wh; + let real_y = scrn_wh.y - (block_wh) - (block_y as f32 * block_wh); + + let color = match block.id { + BlockId::Dirt => Color::BROWN, + BlockId::Grass => Color::GREEN, + BlockId::Stone => Color::GRAY, + BlockId::Bedrock => Color::BLACK, + }; + rl_draw.draw_rectangle_v(Vector2::new(real_x, real_y), block_sz, color); + } + } + } + + } + + pub fn get_delta_time(&self) -> f32 { + self.raylib.0.get_frame_time() + } + +} diff --git a/src/world/block/mod.rs b/src/world/block/mod.rs new file mode 100644 index 0000000..60faca0 --- /dev/null +++ b/src/world/block/mod.rs @@ -0,0 +1,11 @@ +use super::id::BlockId; + +pub struct Block { + pub id: BlockId, +} + + + + + + diff --git a/src/world/chunk.rs b/src/world/chunk.rs new file mode 100644 index 0000000..f67135c --- /dev/null +++ b/src/world/chunk.rs @@ -0,0 +1,73 @@ +use std::collections::HashMap; + +use nalgebra::Vector2; + +use super::{block::Block, id::BlockId}; + + +pub const CHUNK_WIDTH: usize = 32; +pub const CHUNK_HEIGHT: usize = 512; +const DIRT_LEVEL: u8 = 5; + +pub struct Chunk { + blocks: HashMap<(u8, u8), Block>, +} + +impl Chunk { + pub fn new_empty() -> Self { + Self { + blocks: HashMap::new() + } + } + + pub fn new_flat(surface_level: u8) -> Self { + let mut w = Self::new_empty(); + for i in 0..CHUNK_WIDTH { + w.add_block(BlockId::Grass, (i as u8, surface_level)); + } + + if surface_level < DIRT_LEVEL { return w; } + + for y in 1..=DIRT_LEVEL { + for x in 0..CHUNK_WIDTH { + + let rv; + if y < 4 { + rv = 0.0 + } else { + rv = rand::random::() * (y / 2) as f32; + } + + let id; + if rv > 0.6 { + id = BlockId::Stone; + } else { + id = BlockId::Dirt; + } + + w.add_block(id, (x as u8, surface_level-y)); + } + } + + for y in 1..surface_level-DIRT_LEVEL { + for x in 0..CHUNK_WIDTH { + w.add_block(BlockId::Stone, (x as u8, y)); + } + } + + w + } + + pub fn add_block(&mut self, id: BlockId, pos: (u8, u8)) { + self.blocks.insert(pos, Block { id }); + } + + pub fn blocks(&self) -> &HashMap<(u8, u8), Block> { + &self.blocks + } + + pub fn blocks_mut(&mut self) -> &mut HashMap<(u8, u8), Block> { + &mut self.blocks + } +} + diff --git a/src/world/entity.rs b/src/world/entity.rs new file mode 100644 index 0000000..c91a37b --- /dev/null +++ b/src/world/entity.rs @@ -0,0 +1,8 @@ +use nalgebra::Vector2; + + +pub struct Entity { + id: String, + pos: Vector2, +} + diff --git a/src/world/id/block.rs b/src/world/id/block.rs new file mode 100644 index 0000000..ff31556 --- /dev/null +++ b/src/world/id/block.rs @@ -0,0 +1,8 @@ + +#[repr(usize)] +pub enum BlockId { + Grass = 0, + Dirt, + Stone, + Bedrock +} diff --git a/src/world/id/entity.rs b/src/world/id/entity.rs new file mode 100644 index 0000000..c2c2ad3 --- /dev/null +++ b/src/world/id/entity.rs @@ -0,0 +1,5 @@ + +#[repr(usize)] +pub enum EntityId { + Cat = 0, +} diff --git a/src/world/id/mod.rs b/src/world/id/mod.rs new file mode 100644 index 0000000..d8eb021 --- /dev/null +++ b/src/world/id/mod.rs @@ -0,0 +1,5 @@ +mod block; +mod entity; + +pub use block::*; +pub use entity::*; diff --git a/src/world/mod.rs b/src/world/mod.rs new file mode 100644 index 0000000..f11ae5c --- /dev/null +++ b/src/world/mod.rs @@ -0,0 +1,59 @@ +use std::collections::HashMap; + +use raylib::math::Vector2; + +use self::chunk::{Chunk, CHUNK_WIDTH}; + + +pub mod chunk; +mod entity; +mod block; +pub mod id; + +pub struct World { + chunks: HashMap, + entities: Vec +} + + +impl World { + pub fn new() -> Self { + Self { + chunks: HashMap::new(), + entities: Vec::new() + } + } + + pub fn generate_new(&mut self, surface_level: u8) { + self.chunks.clear(); + self.entities.clear(); + for i in -2..=2 { + self.chunks.insert(i, Chunk::new_flat(surface_level)); + } + } + + pub fn is_on_ground(&self, pos: Vector2) -> bool { + let chunk_id = pos.x / CHUNK_WIDTH as f32; + let rel_pos_x = pos.x % CHUNK_WIDTH as f32; + + let Some(chunk) = self.chunks().get(&(chunk_id as isize)) else { + return false; + }; + + let Some(((_, by), _)) = chunk.blocks().get_key_value(&(rel_pos_x as u8, pos.y as u8)) else { + return false; + }; + + log::debug!("by: {}, py: {}", by, pos.y); + + *by as u8 == pos.y as u8 + } + + pub fn chunks(&self) -> &HashMap { + &self.chunks + } + + pub fn chunks_mut(&mut self) -> &mut HashMap { + &mut self.chunks + } +}