1 files changed, 106 insertions, 0 deletions
diff --git a/src/native/common_tools.c b/src/native/common_tools.c
new file mode 100644
index 0000000..c38b4b3
--- /dev/null
+++ b/src/native/common_tools.c
@@ -0,0 +1,106 @@
+/* 
+ * Copyright (c) 2002 Light Weight Java Game Library Project
+ * All rights reserved.
+ * 
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are 
+ * met:
+ * 
+ * * Redistributions of source code must retain the above copyright 
+ *   notice, this list of conditions and the following disclaimer.
+ *
+ * * Redistributions in binary form must reproduce the above copyright
+ *   notice, this list of conditions and the following disclaimer in the
+ *   documentation and/or other materials provided with the distribution.
+ *
+ * * Neither the name of 'Light Weight Java Game Library' nor the names of 
+ *   its contributors may be used to endorse or promote products derived 
+ *   from this software without specific prior written permission.
+ * 
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
+ * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR 
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, 
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR 
+ * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+ * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING 
+ * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+ 
+/**
+ * $Id$
+ *
+ * @author elias_naur <[email protected]>
+ * @version $Revision$
+ */
+
+#include "common_tools.h"
+
+static void incListStart(event_queue_t *queue) {
+	queue->list_start = (queue->list_start + 1)%EVENT_BUFFER_SIZE;
+}
+
+void initEventQueue(event_queue_t *event_queue) {
+	event_queue->list_start = 0;
+	event_queue->list_end = 0;
+}
+
+void putEventElement(event_queue_t *queue, unsigned char byte) {
+	int next_index = (queue->list_end + 1)%EVENT_BUFFER_SIZE;
+	if (next_index == queue->list_start) {
+#ifdef _DEBUG
+		printf("Event buffer overflow!\n");
+#endif
+		return;
+	}
+	queue->input_event_buffer[queue->list_end] = byte;
+	queue->list_end = next_index;
+}
+
+static int hasMoreEvents(event_queue_t *queue) {
+	return queue->list_start != queue->list_end;
+}
+
+static void copyEvent(event_queue_t *queue, int event_size, int event_index) {
+	int output_index = event_index*event_size;
+	int i;
+	for (i = 0; i < event_size; i++) {
+		queue->output_event_buffer[output_index] = queue->input_event_buffer[queue->list_start];
+                incListStart(queue);
+		output_index++;
+	}
+}
+
+int copyEvents(event_queue_t *event_queue, int event_size) {
+	int num_events = 0;
+	while (hasMoreEvents(event_queue)) {
+		copyEvent(event_queue, event_size, num_events);
+		num_events++;
+	}
+	return num_events;
+}
+
+unsigned char *getOutputList(event_queue_t *queue) {
+	return queue->output_event_buffer;
+}
+
+int getEventBufferSize(event_queue_t *event_queue) {
+	return EVENT_BUFFER_SIZE;
+}
+
+static void throwGeneralException(JNIEnv * env, const char *exception_name, const char * err) {
+	jclass cls = (*env)->FindClass(env,exception_name);
+	(*env)->ThrowNew(env,cls, err);
+	(*env)->DeleteLocalRef(env,cls);
+}
+
+void throwOpenALException(JNIEnv * env, const char * err) {
+	throwGeneralException(env, "net/java/games/joal/OpenALException", err);
+}
+
+void throwException(JNIEnv * env, const char * err) {
+	throwGeneralException(env, "java/lang/Exception", err);
+}