fix(terrain): revert shader shadow-chunk injection (broke compilation, terrain disappeared)

The <shadowmap_pars_*> + <lights_pars_begin> chunks combined with custom ShaderMaterial caused shader compile failure on the live build, hiding all terrain geometry. Reverted both shader and material to pre-shadow state. Player shadow on terrain remains a TODO and needs a different approach (likely EffectComposer or a fully custom shadow sample without chunk-include side effects).

Author: lanmower

client/TerrainMaterial.js

@@ -25,23 +25,21 @@ export const TERRAIN_DEFAULTS = {
 }
 
 export function createTerrainMaterial(sceneConfig) {
-  const customUniforms = {
-    sunDir: { value: new THREE.Vector3(21, 50, 20).normalize() },
-    sunColor: { value: new THREE.Color(sceneConfig?.sunColor ?? 0xffffff) },
-    sunIntensity: { value: sceneConfig?.sunIntensity ?? 1.5 },
-    ambientColor: { value: new THREE.Color(sceneConfig?.ambientColor ?? 0xfff4d6) },
-    ambientIntensity: { value: sceneConfig?.ambientIntensity ?? 0.3 },
-    fogColor: { value: new THREE.Color(sceneConfig?.fogColor ?? 0x87ceeb) },
-    fogNear: { value: sceneConfig?.fogNear ?? 80 },
-    fogFar: { value: sceneConfig?.fogFar ?? 200 },
-    waterline: { value: sceneConfig?.waterline ?? 0 },
-    waterlineBand: { value: sceneConfig?.waterlineBand ?? 6 },
-    heightScale: { value: sceneConfig?._heightScale ?? 2.8 },
-  }
   return new THREE.ShaderMaterial({
     vertexShader: VERT_SHADER,
     fragmentShader: FRAG_SHADER,
-    uniforms: THREE.UniformsUtils.merge([THREE.UniformsLib.common, THREE.UniformsLib.lights, customUniforms]),
-    lights: true,
+    uniforms: {
+      sunDir: { value: new THREE.Vector3(21, 50, 20).normalize() },
+      sunColor: { value: new THREE.Color(sceneConfig?.sunColor ?? 0xffffff) },
+      sunIntensity: { value: sceneConfig?.sunIntensity ?? 1.5 },
+      ambientColor: { value: new THREE.Color(sceneConfig?.ambientColor ?? 0xfff4d6) },
+      ambientIntensity: { value: sceneConfig?.ambientIntensity ?? 0.3 },
+      fogColor: { value: new THREE.Color(sceneConfig?.fogColor ?? 0x87ceeb) },
+      fogNear: { value: sceneConfig?.fogNear ?? 80 },
+      fogFar: { value: sceneConfig?.fogFar ?? 200 },
+      waterline: { value: sceneConfig?.waterline ?? 0 },
+      waterlineBand: { value: sceneConfig?.waterlineBand ?? 6 },
+      heightScale: { value: sceneConfig?._heightScale ?? 2.8 },
+    },
   })
 }

client/TerrainShaders.js

@@ -1,6 +1,4 @@
 export const VERT_SHADER = `
-#include <common>
-#include <shadowmap_pars_vertex>
 attribute vec3 vColor;
 attribute float water;
 varying vec3 v_Color;
@@ -17,17 +15,10 @@ void main() {
   vec4 mvPos = modelViewMatrix * vec4(position, 1.0);
   vViewPosition = -mvPos.xyz;
   gl_Position = projectionMatrix * mvPos;
-  vec4 worldPosition = vec4(v_Position, 1.0);
-  vec3 transformedNormal = normalize(normalMatrix * normal);
-  #include <shadowmap_vertex>
 }
 `
 
 export const FRAG_SHADER = `
-#include <common>
-#include <packing>
-#include <lights_pars_begin>
-#include <shadowmap_pars_fragment>
 varying vec3 v_Color;
 varying float v_Water;
 varying vec3 v_Position;
@@ -100,13 +91,8 @@ void main() {
 
   vec3 N = normalize(v_Normal);
   float diff = max(dot(N, normalize(sunDir)), 0.0);
-  float shadow = 1.0;
-  #if NUM_DIR_LIGHT_SHADOWS > 0
-  DirectionalLightShadow ds = directionalLightShadows[0];
-  shadow = getShadow(directionalShadowMap[0], ds.shadowMapSize, ds.shadowBias, ds.shadowRadius, vDirectionalShadowCoord[0]);
-  #endif
   vec3 ambient = ambientColor * ambientIntensity;
-  vec3 diffuse = sunColor * sunIntensity * diff * shadow;
+  vec3 diffuse = sunColor * sunIntensity * diff;
   vec3 color = albedo * (ambient + diffuse);
 
   float dist = length(vViewPosition);