Rework garden simulation pipelines

src/pipelines/agents/agent-generation/agent-schema.wgsl

@@ -1,11 +1,16 @@
 struct Agent {
   position: vec2<f32>,
   angle: f32,
-  generation: f32,
+  colorIndex: f32,
+  targetPosition: vec2<f32>,
+  targetAngle: f32,
+  introDelay: f32,
 }
 
 @group(1) @binding(1) var<storage, read_write> agents: array<Agent>;
 
-fn get_id(global_id: vec3<u32>,  workgroup_count: vec3<u32>) -> u32 {
-  return global_id.x + global_id.y * (workgroup_count.x * 64) + global_id.z * (workgroup_count.x * workgroup_count.y * 64);
-}    
+const agentWorkgroupSize = __AGENT_WORKGROUP_SIZE__u;
+
+fn get_id(global_id: vec3<u32>) -> u32 {
+  return global_id.x;
+}