Add entity rotation

game/components.h

@@ -64,8 +64,9 @@ extern ECS_COMPONENT_DECLARE(SteeringOutput);
 typedef struct TextureRegion {
     Texture2D texture;
     Rectangle rec;
-    bool flipX;
+    f32 rotation;
-    bool flipY;
+    bool flipX : 1;
+    bool flipY : 1;
 } TextureRegion;
 extern ECS_COMPONENT_DECLARE(TextureRegion);
 

game/main.c

@@ -161,7 +161,7 @@ bool init(void *userData) {
     ECS_SYSTEM(ECS, renderEntities, EcsOnUpdate, Position, Size, Rotation, TextureRegion, TextureEntities);
 
     ECS_SYSTEM(ECS, renderColliders, EcsOnUpdate, Position, Size);
-    ECS_SYSTEM(ECS, renderRotationDirection, EcsOnUpdate, Position, Rotation);
+    ECS_SYSTEM(ECS, renderRotationDirection, EcsOnUpdate, Position, Rotation, TextureEntities);
 
     renderDebugPathSystem = renderDebugPath;
     renderCollidersSystem = renderColliders;

game/map_init.c

@@ -24,6 +24,7 @@ bool initEntityObjectsLayer(BzTileMap *map, BzTileObjectGroup *objectGroup) {
     if (!objectTileset) return true;
 
     for (i32 i = 0; i < objectGroup->objectCount; i++) {
+        if (i == 1) break;
         BzTileObject object = objectGroup->objects[i];
         ecs_entity_t e = ecs_new_id(ECS);
         game->entity = e;

game/systems_entity.c

@@ -74,21 +74,31 @@ void entityUpdateKinematic(ecs_iter_t *it) {
         // position += velocity * dt
         // rotation += angularVelocity * dt
         position[i] = Vector2Add(position[i], Vector2Scale(velocity[i], dt));
-        rotation[i] += angularVel[i] * dt;
+        //rotation[i] += angularVel[i] * dt;
 
         // Update velocity and angular velocity
         // velocity += steering.liner * dt
         // angularVelocity += steering.angular * dt
         velocity[i] = Vector2Add(velocity[i], Vector2Scale(steering[i].linear, dt * 10));
-        angularVel[i] += steering[i].angular;
+        angularVel[i] += steering[i].angular * dt * 10;
 
         if (Vector2LengthSqr(steering[i].linear) == 0) {
             // Decay velocity
             velocity[i] = Vector2Scale(velocity[i], 1 - (dt * 5.0f));
         }
+        angularVel[i] *= 1 - (dt * 5.0f);
         // Reset steering
         steering[i] = (SteeringOutput) {};
 
+        {
+            const InputState *input = ecs_singleton_get(ECS, InputState);
+
+            Vector2 mouse = input->mouseDownWorld;
+            f32 rot = Vector2Angle(position[i], mouse) + 270 * DEG2RAD;
+            rotation[i] = rot;
+
+        }
+
         // Check for speeding and clip
         const f32 maxSpeed = 15.0f;
         if (Vector2Length(velocity[i]) > maxSpeed) {
@@ -100,7 +110,7 @@ void entityUpdateKinematic(ecs_iter_t *it) {
         ecs_entity_t entity = it->entities[i];
         if (ecs_has(it->world, entity, TextureRegion)) {
             TextureRegion *text = ecs_get_mut(it->world, entity, TextureRegion);
-            text->flipX = velocity[i].x < 0.01f;
+            text->flipX = rotation[i] >= 0.0f * RAD2DEG && rotation[i] <= 180.0f * RAD2DEG;
         }
     }
 }
@@ -116,10 +126,17 @@ void entityFollowPath(ecs_iter_t *it) {
 
     for (i32 i = 0; i < it->count; i++) {
         Position target = path[i].paths->waypoints[path[i].curWaypoint];
-        steering[i].linear.x = target.x - position[i].x;
+        steering[i].linear = Vector2Subtract(target, position[i]);
-        steering[i].linear.y = target.y - position[i].y;
-
         f32 dst = Vector2LengthSqr(steering[i].linear);
+        f32 maxAccel = 10.0f;
+        steering[i].linear = Vector2Normalize(steering[i].linear);
+        steering[i].linear = Vector2Scale(steering[i].linear, maxAccel);
+
+        if (Vector2Length(velocity[i]) > 10.0f) {
+            f32 rot = Vector2Angle(position[i], target);
+            rotation[i] = rot;
+        }
+
         if (dst < 8.0f) {
             path[i].curWaypoint++;
             if (path[i].curWaypoint >= path[i].paths->numWaypoints) {
@@ -130,10 +147,6 @@ void entityFollowPath(ecs_iter_t *it) {
                 if (!path[i].paths) ecs_remove(ECS, it->entities[i], Path);
             }
         }
-
-        steering[i].linear = Vector2Normalize(steering[i].linear);
-        steering[i].linear = Vector2Scale(steering[i].linear, 10.0f);
-
     }
 }
 
@@ -183,7 +196,7 @@ static void render(ecs_iter_t *it) {
         Rectangle src = t[i].rec;
         if (t[i].flipX) src.width *= -1.0f;
         if (t[i].flipY) src.height *= -1.0f;
-        DrawTexturePro(t[i].texture, src, dst, origin, r[i], WHITE);
+        DrawTexturePro(t[i].texture, src, dst, origin, t[i].rotation, WHITE);
     }
 }
 
@@ -215,7 +228,7 @@ void renderRotationDirection(ecs_iter_t *it) {
     Rotation *rot = ecs_field(it, Rotation, 2);
 
     for (i32 i = 0; i < it->count; i++) {
-        Vector2 v = {0.0f, 4.0f};
+        Vector2 v = {10.0f, 0.0f};
         v = Vector2Rotate(v, rot[i]);
         v = Vector2Add(v, pos[i]);
         DrawCircle(v.x, v.y, 1.0f, RED);

tiled/entities.tsx

@@ -34,5 +34,11 @@
    <property name="animation" value="walk_3"/>
   </properties>
  </tile>
- <tile id="64" type="axe"/>
+ <tile id="64" type="axe">
+  <objectgroup draworder="index" id="2">
+   <object id="1" x="7" y="5" width="6" height="6">
+    <ellipse/>
+   </object>
+  </objectgroup>
+ </tile>
 </tileset>