Changed project name (placeholder), some renames

2021-05-10 10:43:14 +02:00
parent 3a45d4e0de
commit 3bd9fa942e
13 changed files with 43 additions and 37 deletions
@@ -0,0 +1,60 @@
+use cgmath::Point3;
+use noise::{Perlin, NoiseFn};
+use rand::{Rng, prelude::ThreadRng};
+
+use crate::game::world::{block, block::WorldBlock};
+
+const SCALE: f64 = 150.0;
+
+
+pub struct WorldGen {
+
+}
+
+impl WorldGen {
+
+    /*
+    *   Generate height map for given block position
+    */
+    fn gen_height_map(x: usize, z: usize, rand: &mut ThreadRng, noise: &Perlin) -> ([[usize;block::SIZE]; block::SIZE], usize) {
+        let x = x * block::SIZE;
+        let z = z * block::SIZE;
+
+        // Generate map
+        let mut max: usize = 0;
+        let mut map = [[0_usize; block::SIZE]; block::SIZE];
+        for lx in 0..block::SIZE {
+            for lz in 0..block::SIZE {
+                let value = (noise.get([(x + lx) as f64 / SCALE, (z + lz) as f64 /SCALE]) + 1.0) / 2.0;
+                let mut h = (value * 30.0) as usize;
+                h += (rand.gen::<f32>() * 2.0) as usize;
+                if h == 0 { h = 1; }
+                if h > max { max = h; }
+                map[lx][lz] = h;
+            }
+        }
+        (map, max)
+    }
+
+    /* 
+    *   Generate block
+    */
+    pub fn generate(block_pos: &Point3<u32>, block: &mut WorldBlock)  {
+        let mut rng = rand::thread_rng();
+        let noise = Perlin::new();
+
+        // Generate height map
+        let (map, max) = WorldGen::gen_height_map(block_pos.x as usize, block_pos.z as usize, &mut rng, &noise);
+
+        // Fill
+        for x in 0..block::SIZE {
+            for z in 0..block::SIZE {
+                let h = map[x][z];
+                //let h = 16; // testing
+                for y in 0..h {
+                    block.set(Point3{x, y, z}, 2);
+                }
+            }
+        }
+    }
+}