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authorxHire <xhire@tuxportal.cz>2008-10-04 13:49:27 +0200
committerxHire <xhire@tuxportal.cz>2008-10-04 13:49:27 +0200
commite2cb2bfce3e4838b777310a03ad814b2aed68250 (patch)
tree5bbf60f87df00a5eb6572c0caa9926bbf50873bd /src/client/keyboardBuffer.c
parentcaf6b6d1f9528dd6d8cd02ab6d2173a0f5df2636 (diff)
Development version was renamed form 'tuxanci-svn' to 'tuxanci-dev'
Compilation warnings were cleaned up
Diffstat (limited to 'src/client/keyboardBuffer.c')
-rw-r--r--src/client/keyboardBuffer.c105
1 files changed, 59 insertions, 46 deletions
diff --git a/src/client/keyboardBuffer.c b/src/client/keyboardBuffer.c
index 7dee362..246d262 100644
--- a/src/client/keyboardBuffer.c
+++ b/src/client/keyboardBuffer.c
@@ -1,64 +1,69 @@
/*
* keyboardBuffer.c
*
- * Created on: 1.8.2008
+ * Created on: 1. 8. 2008
* Author: Karel Podvolecky
*
- * Jednoducha fronta stisknutych klaves.
+ * Simple front of pressed keys.
*
*/
#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
#include <assert.h>
#include <SDL.h>
#include "keyboardBuffer.h"
-static keyboardBuffer_t *keyboardBuffer=NULL;
+static keyboardBuffer_t *keyboardBuffer = NULL;
static SDL_keysym emptyKey;
/*
- * Inicializuje klavesovy buffer. Parametr udava pocet klaves.
+ * Key buffer initializes. The parameter sets the number of keys.
*/
-void initKeyboardBuffer(int size){
- assert(size>0);
- assert(keyboardBuffer==NULL);
+void initKeyboardBuffer(int size)
+{
+ assert(size > 0);
+ assert(keyboardBuffer == NULL);
keyboardBuffer = malloc(sizeof(keyboardBuffer_t));
- assert(keyboardBuffer!=NULL);
+ assert(keyboardBuffer != NULL);
memset(keyboardBuffer, 0, sizeof(keyboardBuffer_t));
keyboardBuffer->buff = malloc(size * sizeof(SDL_keysym));
- assert(keyboardBuffer->buff!=NULL);
+ assert(keyboardBuffer->buff != NULL);
memset(keyboardBuffer->buff, 0, size * sizeof(SDL_keysym));
- keyboardBuffer->begin=0;
- keyboardBuffer->end=0;
- keyboardBuffer->count=0;
- keyboardBuffer->size=size;
+ keyboardBuffer->begin = 0;
+ keyboardBuffer->end = 0;
+ keyboardBuffer->count = 0;
+ keyboardBuffer->size = size;
emptyKey.sym = SDLK_UNKNOWN;
}
/*
- * Vyprazdni buffer.
+ * Empty the buffer
*/
-void clearKeyboardBuffer(){
- assert(keyboardBuffer!=NULL);
+void clearKeyboardBuffer()
+{
+ assert(keyboardBuffer != NULL);
- keyboardBuffer->begin=0;
- keyboardBuffer->end=0;
- keyboardBuffer->count=0;
+ keyboardBuffer->begin = 0;
+ keyboardBuffer->end = 0;
+ keyboardBuffer->count = 0;
memset(keyboardBuffer->buff, 0, keyboardBuffer->size * sizeof(SDL_keysym));
}
/*
- * Prida klavesu na konec bufferu. Pokud je buffer preplnen,
- * vypise chybu na chybovy vystup a klavesu zahodi.
+ * Adds key to the end of the buffer. If the buffer is overrun,
+ * an error is printed to stderr and the key is dropped.
*/
-bool_t pushKeyToKeyboardBuffer(SDL_keysym key){
- assert(keyboardBuffer!=NULL);
+bool_t pushKeyToKeyboardBuffer(SDL_keysym key)
+{
+ assert(keyboardBuffer != NULL);
if (keyboardBuffer->count >= keyboardBuffer->size){
fprintf(stderr, _("Keyboard Buffer overrun! Dropping key: %02x\n"), key.sym);
@@ -68,8 +73,9 @@ bool_t pushKeyToKeyboardBuffer(SDL_keysym key){
keyboardBuffer->buff[keyboardBuffer->end] = key;
keyboardBuffer->end++;
- if (keyboardBuffer->end>=keyboardBuffer->size)
- keyboardBuffer->end=0;
+ if (keyboardBuffer->end >= keyboardBuffer->size) {
+ keyboardBuffer->end = 0;
+ }
keyboardBuffer->count++;
@@ -77,11 +83,12 @@ bool_t pushKeyToKeyboardBuffer(SDL_keysym key){
}
/*
- * Vyjme prvni klavesu z bufferu a vrati ji. Pokud je buffer prazdny,
- * vypise chybu na chybovy vystup a vrati SDLK_UNKNOWN
+ * Takes out first key from the buffer and returns it. If the buffer is empty,
+ * an error is printed to stderr and SDLK_UNKNOWN is returned.
*/
-SDL_keysym popKeyFromKeyboardBuffer(){
- assert(keyboardBuffer!=NULL);
+SDL_keysym popKeyFromKeyboardBuffer()
+{
+ assert(keyboardBuffer != NULL);
if (keyboardBuffer->count <= 0){
fprintf(stderr, _("Keyboard Buffer underrun!\n"));
@@ -89,11 +96,12 @@ SDL_keysym popKeyFromKeyboardBuffer(){
}
SDL_keysym key = keyboardBuffer->buff[keyboardBuffer->begin];
- keyboardBuffer->buff[keyboardBuffer->begin]=emptyKey;
+ keyboardBuffer->buff[keyboardBuffer->begin] = emptyKey;
keyboardBuffer->begin++;
- if (keyboardBuffer->begin>=keyboardBuffer->size)
- keyboardBuffer->begin=0;
+ if (keyboardBuffer->begin >= keyboardBuffer->size) {
+ keyboardBuffer->begin = 0;
+ }
keyboardBuffer->count--;
@@ -101,38 +109,43 @@ SDL_keysym popKeyFromKeyboardBuffer(){
}
/*
- * Velikost bufferu.
+ * The buffer size
*/
-int getKeyboardBufferSize(){
- assert(keyboardBuffer!=NULL);
+int getKeyboardBufferSize()
+{
+ assert(keyboardBuffer != NULL);
return keyboardBuffer->size;
}
/*
- * Pocet klaves v bufferu.
+ * Number of keys in the buffer
*/
-int KeyboardBufferCount(){
- assert(keyboardBuffer!=NULL);
+int KeyboardBufferCount()
+{
+ assert(keyboardBuffer != NULL);
return keyboardBuffer->count;
}
-bool_t isAnyKeyInKeyboardBuffer(){
- return KeyboardBufferCount()>0 ? TRUE : FALSE;
+bool_t isAnyKeyInKeyboardBuffer()
+{
+ return KeyboardBufferCount() > 0 ? TRUE : FALSE;
}
/*
- * Uvolni buffer. Pokud neni prazdny, vypise predtim
- * info o zaplneni na chybovy vystup.
+ * Frees the buffer. If it is not empty, information
+ * about filling is prined to stderr first.
*/
-void quitKeyboardBuffer(){
- assert(keyboardBuffer!=NULL);
+void quitKeyboardBuffer()
+{
+ assert(keyboardBuffer != NULL);
- if (keyboardBuffer->count>0){
+ if (keyboardBuffer->count > 0){
fprintf(stderr, _("Keyboard buffer is not empty!\n"));
}
free(keyboardBuffer->buff);
free(keyboardBuffer);
- keyboardBuffer=NULL;
+ keyboardBuffer = NULL;
}
+