Add walking animation

game/main.c

@@ -151,6 +151,7 @@ bool init(void *userData) {
     ECS_SYSTEM(ECS, entityUpdateKinematic, EcsOnUpdate, Position, Rotation, Velocity, AngularVelocity, SteeringOutput);
     ECS_SYSTEM(ECS, entityFollowPath, EcsOnUpdate, Position, Rotation, Velocity, AngularVelocity, SteeringOutput, Path);
 
+    ECS_SYSTEM(ECS, entityUpdateAnimationState, EcsOnUpdate, Velocity, AnimationType);
     ECS_SYSTEM(ECS, entityUpdateAnimation, EcsOnUpdate, Animation, TextureRegion);
 
     ECS_SYSTEM(ECS, renderDebugPath, EcsOnUpdate, Path);

game/systems.h

@@ -25,10 +25,11 @@ void entityPathRemoved(ecs_iter_t *it);
 
 /* Observer (for updating animation state)
  * 1: Animation
- * 2: EntityState
+ * 2: AnimationType
  */
 void entitySetAnimationState(ecs_iter_t *it);
 
+
 /*
  * 0: Game (singleton) for entity map
  * 1: Position
@@ -59,6 +60,11 @@ void entityUpdateKinematic(ecs_iter_t *it);
  */
 void entityFollowPath(ecs_iter_t *it);
 
+/*
+ * 1: Velocity
+ * 2: AnimationType
+ */
+void entityUpdateAnimationState(ecs_iter_t *it);
 /*
  * 0:
  * 1: Animation
@@ -66,6 +72,7 @@ void entityFollowPath(ecs_iter_t *it);
  */
 void entityUpdateAnimation(ecs_iter_t *it);
 
+
 /*
  * 0:
  */

game/systems_entity.c

@@ -121,6 +121,20 @@ void entityFollowPath(ecs_iter_t *it) {
     }
 }
 
+void entityUpdateAnimationState(ecs_iter_t *it) {
+    Velocity      *velocity = ecs_field(it, Velocity, 1);
+    //AnimationType *animType = ecs_field(it, AnimationType , 2);
+    for (i32 i = 0; i < it->count; i++) {
+        f32 len = Vector2Length(velocity[i]);
+
+        ecs_entity_t  entity = it->entities[i];
+        AnimationType type   = ANIM_IDLE;
+        if (len > 1.0f)
+            type = ANIM_WALK;
+
+        ecs_set(it->world, entity, AnimationType, {type});
+    }
+}
 void entityUpdateAnimation(ecs_iter_t *it) {
     Game *game = ecs_singleton_get_mut(ECS, Game);
     Animation *anim = ecs_field(it, Animation, 1);