prefer imbris syntax proposal, documentation and changelog

CHANGELOG.md

@@ -21,6 +21,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 - Camera zoom can now be locked, to prevent accidental zooming while rolling in combat. It comes
   with a keybind to enable/disable the setting, and an Auto/Toggle behavior setting. Auto behavior
   will only lock the camera zoom while movement and combat inputs are also being pressed.
+- Custom spots can be added without recompilation (only ron and vox files)
 
 ### Changed
 - Bats move slower and use a simple proportional controller to maintain altitude

assets/world/manifests/spots.ron

@@ -1,8 +1,13 @@
 [
-//    (
-//        base_structures: "spots_general.mage_tower",
-//        freq: 100.0,
-//        condition: And3((Typical, MaxGradient(0.2), Biome([Forest, Taiga]))),
-//        spawn: false,
-//    ),
+    // example entry, increase freq to activate
+    (
+        // ron file pointing to voxel model and defining special colors
+        base_structures: "spots_general.mage_tower",
+        // maximum occurance per each 1000km^2 world area
+        freq: 0.0,
+        // placement requirements
+        condition: All([Typical, MaxGradient(0.2), Biome([Forest, Taiga])]),
+        // whether to prevent trees etc. around this spot
+        spawn: false,
+    ),
 ]

world/src/layer/spot.rs

@@ -851,8 +851,8 @@ enum SpotCondition {
     MinWaterDepth(f32),
 
     Not(Box<SpotCondition>),
-    And(Box<(SpotCondition, SpotCondition)>),
-    And3(Box<(SpotCondition, SpotCondition, SpotCondition)>),
+    All(Vec<SpotCondition>),
+    Any(Vec<SpotCondition>),
 }
 
 impl SpotCondition {
@@ -872,13 +872,21 @@ impl SpotCondition {
                     SpotCondition::IsUnderwater.is_valid(g, c) && c.water_alt > c.alt + depth
                 },
                 SpotCondition::Not(condition) => !condition.is_valid(g, c),
-                SpotCondition::And(conditions) => {
-                    conditions.0.is_valid(g, c) && conditions.1.is_valid(g, c)
+                SpotCondition::All(conditions) => 'outer: {
+                    for cond in conditions.iter() {
+                        if !cond.is_valid(g, c) {
+                            break 'outer false;
+                        }
+                    }
+                    true
                 },
-                SpotCondition::And3(conditions) => {
-                    conditions.0.is_valid(g, c)
-                        && conditions.1.is_valid(g, c)
-                        && conditions.2.is_valid(g, c)
+                SpotCondition::Any(conditions) => 'outer: {
+                    for cond in conditions.iter() {
+                        if cond.is_valid(g, c) {
+                            break 'outer true;
+                        }
+                    }
+                    false
                 },
             }
     }