Checkpoint

1 files changed, 26 insertions, 0 deletions

diff --git a/composeApp/src/commonMain/kotlin/coffee/liz/ecs/physics/PhysicsSystem.kt b/composeApp/src/commonMain/kotlin/coffee/liz/ecs/physics/PhysicsSystem.kt
new file mode 100644
index 0000000..703e614
--- /dev/null
+++ b/composeApp/src/commonMain/kotlin/coffee/liz/ecs/physics/PhysicsSystem.kt
@@ -0,0 +1,26 @@
+package coffee.liz.ecs.physics
+
+import coffee.liz.ecs.Entity
+import coffee.liz.ecs.TickedSystem
+import coffee.liz.ecs.World
+import kotlin.time.Duration
+
+internal fun interface CollisionResolver<Outside> {
+    fun resolveCollision(world: World<Outside>, a: Entity, b: Entity)
+}
+
+abstract class PhysicsSystem<Outside>(
+    physicsTickRate: Duration
+): TickedSystem<Outside>(physicsTickRate), CollisionResolver<Outside> {
+    private val integrationTick = IntegrationTick<Outside>()
+    private val collisionTick = CollisionTick(this)
+
+    abstract override fun resolveCollision(world: World<Outside>, a: Entity, b: Entity)
+
+    override fun update(world: World<Outside>, state: Outside, ticks: Int) {
+        for (tick in 1..ticks) {
+            collisionTick.runTick(world)
+            integrationTick.runTick(world)
+        }
+    }
+}
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