Update rcore_ios.c

src/platforms/rcore_ios.c

@@ -73,7 +73,7 @@ extern void ios_destroy();
 //----------------------------------------------------------------------------------
 typedef struct {
     GameViewController *viewController;  // Root view controller
-
+    
     // Display data
     EGLDisplay device;                  // Native display device (physical screen connection)
     EGLSurface surface;                 // Surface to draw on, framebuffers (connected to context)
@@ -91,6 +91,33 @@ static PlatformData platform = { 0 };   // Platform specific data
 //----------------------------------------------------------------------------------
 // Module Internal Functions Declaration
 //----------------------------------------------------------------------------------
+static int map_point_id(UITouch *touch){
+    static UITouch* touchs[MAX_TOUCH_POINTS] = { 0 };
+    for(int i = 0; i < MAX_TOUCH_POINTS; i++){
+        if(touchs[i] == touch) return i + 1;
+    }
+    // clear unused touch pairs before insert
+    for(int i = 0; i < MAX_TOUCH_POINTS; i++){
+        if(touchs[i] == NULL) continue;
+        bool found = false;
+        for(int j = 0; j < MAX_TOUCH_POINTS; j++){
+            if(CORE.Input.Touch.pointId[j] == i + 1){
+                found = true;
+                break;
+            }
+        }
+        if(!found) touchs[i] = NULL;
+    }
+    for(int i = 0; i < MAX_TOUCH_POINTS; i++){
+        if(touchs[i] == NULL){
+            touchs[i] = touch;
+            return i + 1;
+        }
+    }
+    TRACELOG(LOG_ERROR, "Touch point id overflow. This may be a bug!");
+    return 0;
+}
+
 int InitPlatform(void);          // Initialize platform (graphics, inputs and more)
 
 //----------------------------------------------------------------------------------
@@ -644,15 +671,6 @@ void ClosePlatform(void)
     return false;
 }
 
-static int map_point_id(UITouch* touch){
-    int value = (int)(long long)touch;
-    // handle collisions
-    while(array_index_of(value, CORE.Input.Touch.pointId, MAX_TOUCH_POINTS) >= 0){
-        value++;
-    }
-    return value;
-}
-
 static void sync_all_touches(UIEvent* event)
 {
     CORE.Input.Touch.pointCount = (int)event.allTouches.count;