split MovementSystem to MovementIntentSystem and DynamicBodySystem

src/lib/core/CMakeLists.txt

@@ -4,6 +4,7 @@ SET(HDRS
     ${CMAKE_CURRENT_SOURCE_DIR}/Rotation.h
     ${CMAKE_CURRENT_SOURCE_DIR}/BuildingType.h
     ${CMAKE_CURRENT_SOURCE_DIR}/EntityAdmin.h
+    ${CMAKE_CURRENT_SOURCE_DIR}/DynamicBodyComponent.h
     ${CMAKE_CURRENT_SOURCE_DIR}/EcsComponents.h
     ${CMAKE_CURRENT_SOURCE_DIR}/Blueprint.h
     ${CMAKE_CURRENT_SOURCE_DIR}/ItemType.h

src/lib/core/DynamicBodyComponent.h

@@ -0,0 +1,25 @@
+#pragma once
+
+#include <optional>
+
+#include <QVector2D>
+
+struct DynamicBodyComponent
+{
+    // --- dynamics parameters (formerly ShipDynamics) ---
+    float maxSpeedPerTick;
+    float mainAccelerationPerTick;
+    float maneuveringAccelerationPerTick;
+    float angularAccelerationPerTick;
+    float maxRotationSpeedPerTick;
+
+    // --- integrated state ---
+    QVector2D velocity;
+    float     angularVelocity;
+
+    // --- written each tick by MovementIntentSystem, consumed by DynamicBodySystem ---
+    QVector2D linearAcceleration;
+    float     angularAcceleration;
+    std::optional<QVector2D> snapTarget; // set when snap-to-target will fire this tick
+};
+

src/lib/core/EcsComponents.h

@@ -35,24 +35,9 @@ struct Faction
 // Ship components (always present on every ship)
 // ---------------------------------------------------------------------------
 
-struct Velocity
-{
-    QVector2D value;
-};
-
 struct Facing
 {
     float radians;
-    float rotationSpeed;
-};
-
-struct ShipDynamics
-{
-    float maxSpeedPerTick;
-    float mainAccelerationPerTick;
-    float maneuveringAccelerationPerTick;
-    float angularAccelerationPerTick;
-    float maxRotationSpeedPerTick;
 };
 
 struct SensorRange

src/lib/core/EntityAdmin.cpp

@@ -1,5 +1,6 @@
 #include "EntityAdmin.h"
 
+#include "DynamicBodyComponent.h"
 #include "EcsComponents.h"
 #include "MovementIntent.h"
 
@@ -33,11 +34,19 @@ entt::entity EntityAdmin::spawnShip(QVector2D position, float hp, float maxHp,
     add<Position>(entity, Position{position});
     add<Health>(entity, Health{hp, maxHp});
     add<Faction>(entity, Faction{isEnemy});
-    add<Velocity>(entity, Velocity{QVector2D(0.0f, 0.0f)});
-    add<Facing>(entity, Facing{0.0f, 0.0f});
-    add<ShipDynamics>(entity, ShipDynamics{
-        maxSpeedPerTick, mainAccelPerTick, maneuveringAccelPerTick,
-        angularAccelPerTick, maxRotationSpeedPerTick});
+    add<Facing>(entity, Facing{0.0f});
+    add<DynamicBodyComponent>(entity, DynamicBodyComponent{
+        maxSpeedPerTick,
+        mainAccelPerTick,
+        maneuveringAccelPerTick,
+        angularAccelPerTick,
+        maxRotationSpeedPerTick,
+        QVector2D(0.0f, 0.0f),  // velocity
+        0.0f,                    // angularVelocity
+        QVector2D(0.0f, 0.0f),  // linearAcceleration
+        0.0f,                    // angularAcceleration
+        std::nullopt             // snapTarget
+    });
     add<SensorRange>(entity, SensorRange{sensorRange});
     add<ShipIdentity>(entity, ShipIdentity{level, schematicId});
     add<MovementIntent>(entity, MovementIntent{0, QVector2D(0.0f, 0.0f)});