Start implementing ball catcher

src/scene/ball_catcher.c

@@ -63,6 +63,8 @@ void ballCatcherInit(struct BallCatcher* catcher, struct BallCatcherDefinition*
 
     catcher->signalIndex = definition->signalIndex;
 
+    catcher->flags = 0;
+
     collisionObjectUpdateBB(&catcher->collisionObject);
 
     catcher->dynamicId = dynamicSceneAdd(catcher, ballCatcherRender, &catcher->rigidBody.transform, 1.0f);
@@ -73,6 +75,40 @@ void ballCatcherInit(struct BallCatcher* catcher, struct BallCatcherDefinition*
     skArmatureInit(&catcher->armature, &props_combine_ball_catcher_armature);
 }
 
-void ballCatcherUpdate(struct BallCatcher* catcher) {
+void ballCatcherCheckBalls(struct BallCatcher* catcher, struct BallLauncher* ballLaunchers, int ballLauncherCount) {
+    if (catcher->flags & BallCatcherFlagsCaught) {
+        return;
+    }
+
+    for (int i = 0; i < ballLauncherCount; ++i) {
+        struct BallLauncher* launcher = &ballLaunchers[i];
+
+        if (!ballIsActive(&launcher->currentBall)) {
+            continue;
+        }
+
+        struct Simplex simplex;
+        if (!gjkCheckForOverlap(
+            &simplex, 
+            &catcher->collisionObject, 
+            minkowsiSumAgainstObject, 
+            &launcher->currentBall.collisionObject, 
+            minkowsiSumAgainstObject, 
+            &launcher->currentBall.rigidBody.velocity)) {
+            continue;
+        }
+
+        catcher->flags |= BallCatcherFlagsCaught;
+        skAnimatorRunClip(&catcher->animator, &props_combine_ball_catcher_Armature_catch_clip, 0.0f, 0);
+    }
+}
+
+void ballCatcherUpdate(struct BallCatcher* catcher, struct BallLauncher* ballLaunchers, int ballLauncherCount) {
     skAnimatorUpdate(&catcher->animator, catcher->armature.pose, FIXED_DELTA_TIME);
+    
+    if (catcher->flags & BallCatcherFlagsCaught) {
+        signalsSend(catcher->signalIndex);
+    } else {
+        ballCatcherCheckBalls(catcher, ballLaunchers, ballLauncherCount);
+    }
 }

src/scene/ball_catcher.h

@@ -8,6 +8,12 @@
 
 #include "../levels/level_definition.h"
 
+#include "./ball_launcher.h"
+
+enum BallCatcherFlags {
+    BallCatcherFlagsCaught = (1 << 0),
+};
+
 struct BallCatcher {
     struct CollisionObject collisionObject;
     struct RigidBody rigidBody;
@@ -15,9 +21,10 @@ struct BallCatcher {
     struct SKAnimator animator;
     short dynamicId;
     short signalIndex;
+    short flags;
 };
 
 void ballCatcherInit(struct BallCatcher* catcher, struct BallCatcherDefinition* definition);
-void ballCatcherUpdate(struct BallCatcher* catcher);
+void ballCatcherUpdate(struct BallCatcher* catcher, struct BallLauncher* ballLaunchers, int ballLauncherCount);
 
 #endif

src/scene/scene.c

@@ -153,6 +153,12 @@ void sceneInit(struct Scene* scene) {
         ballLauncherInit(&scene->ballLaunchers[i], &gCurrentLevel->ballLaunchers[i]);
     }
 
+    scene->ballCatcherCount = gCurrentLevel->ballCatcherCount;
+    scene->ballCatchers = malloc(sizeof(struct BallCatcher) * scene->ballCatcherCount);
+    for (int i = 0; i < scene->ballCatcherCount; ++i) {
+        ballCatcherInit(&scene->ballCatchers[i], &gCurrentLevel->ballCatchers[i]);
+    }
+
     scene->freeCameraOffset = gZeroVec;
 
     sceneInitDynamicColliders(scene);
@@ -430,6 +436,10 @@ void sceneUpdate(struct Scene* scene) {
         ballLauncherUpdate(&scene->ballLaunchers[i]);
     }
 
+    for (int i = 0; i < scene->ballCatcherCount; ++i) {
+        ballCatcherUpdate(&scene->ballCatchers[i], scene->ballLaunchers, scene->ballLancherCount);
+    }
+
     sceneAnimatorUpdate(&scene->animator);
     sceneUpdatePortalVelocity(scene);
     sceneUpdateAnimatedObjects(scene);