050

.clang-format

@@ -0,0 +1,3 @@
+TabWidth: 4
+UseTab: "Never"
+IndentWidth: 4

.gitignore

@@ -1 +1,2 @@
 bin/
+out/

Makefile

@@ -1,32 +1,27 @@
 ############################################################
-# General purpose makefile
+#General purpose makefile
 #
-# Works for all C-projects where
-# - binaries are compiled into sub-dir bin
-# - binaries are created from a multiple c-sources
-#   and depend on all headers and object files in ./
+#Works for all C - projects where
+#- binaries are compiled into sub - dir bin
+#- binaries are created from a multiple c - sources
+#and depend on all headers and object files in./
 #
-# Note: due to the dependencies encoded multiple targets
-#       are not sensible
+#Note : due to the dependencies encoded multiple targets
+#are not sensible
 #
 
-# Please add all header files in ./ here
-HEADERS += prep.h
-HEADERS += worm.h
-HEADERS += worm_model.h
-HEADERS += board_model.h
+#Please add all header files in./ here
+FILES += prep
+FILES += worm
+FILES += worm_model
+FILES += messages
+FILES += board_model
 
-# Please add all object files in ./ here
-OBJECTS += prep.o
-OBJECTS += worm.o
-OBJECTS += worm_model.o
-OBJECTS += board_model.o
-
-# Please add THE target in ./bin here
+#Please add THE target in./ bin here
 TARGET += $(BIN_DIR)/worm
 
 #################################################
-# There is no need to edit below this line
+#There is no need to edit below this line
 #################################################
 
 MACHINE := $(shell uname -m)
@@ -51,23 +46,28 @@ RM_DIR = rm -rf
 MKDIR = mkdir
 SHELL = /bin/bash
 BIN_DIR = bin
+OBJ_DIR = out
+
+OBJECTS=$(patsubst %, $(OBJ_DIR)/%.o, $(FILES))
 
 #### Default target
 all: $(BIN_DIR) $(TARGET)
 
 #### Fixed build rules for binaries with multiple object files
 
-# Object files
-%.o : %.c $(HEADERS)
-	$(CC) -c $(CFLAGS) $< 
+$(OBJ_DIR)/%.o: %.c
+	$(CC) -c $(CFLAGS) -o $@ $<
 
 #### Binaries
-$(TARGET) : $(OBJECTS)
+$(TARGET) : $(OBJ_DIR) $(OBJECTS)
 	$(CC) $(CFLAGS) -o $@ $(OBJECTS) $(LDLIBS)
 
 $(BIN_DIR):
 	$(MKDIR) $(BIN_DIR)
 
+$(OBJ_DIR):
+	$(MKDIR) $(OBJ_DIR)
+
 .PHONY: clean
 clean :
-	$(RM_DIR) $(BIN_DIR) $(OBJECTS)
+	$(RM_DIR) $(BIN_DIR) $(OBJ_DIR)

board_model.c

@@ -1,26 +1,20 @@
 #include "board_model.h"
 
-#include <curses.h>
 #include "worm.h"
+#include <curses.h>
 
 // Place an item onto the curses display.
-void placeItem(int y, int x, chtype symbol, enum ColorPairs color_pair) {
-
+void placeItem(const struct Pos pos, const chtype symbol,
+               const enum ColorPairs color_pair) {
     //  Store item on the display (symbol code)
-    move(y, x);                         // Move cursor to (y,x)
-    attron(COLOR_PAIR(color_pair));     // Start writing in selected color
-    addch(symbol);                      // Store symbol on the virtual display
-    attroff(COLOR_PAIR(color_pair));    // Stop writing in selected color
+    move(pos.y, pos.x);              // Move cursor to (y,x)
+    attron(COLOR_PAIR(color_pair));  // Start writing in selected color
+    addch(symbol);                   // Store symbol on the virtual display
+    attroff(COLOR_PAIR(color_pair)); // Stop writing in selected color
 }
 
-// Getters
-
 // Get the last usable row on the display
-int getLastRow() {
-    return LINES - 1;
-}
+int getLastRow() { return LINES - 1 - MA_ROWS_RESERVED; }
 
 // Get the last usable column on the display
-int getLastCol() {
-    return COLS - 1;
-}
+int getLastCol() { return COLS - 1; }

board_model.h

@@ -1,11 +1,17 @@
 #ifndef _BOARD_MODEL_H
 #define _BOARD_MODEL_H
 
-#include <curses.h>
 #include "worm.h"
+#include <curses.h>
+
+// Positions on the board
+struct Pos {
+	int y;
+	int x;
+};
 
-void placeItem(int y, int x, chtype symbol, enum ColorPairs color_pair);
+void placeItem(struct Pos, chtype symbol, enum ColorPairs);
 int getLastRow();
 int getLastCol();
 
-#endif  // #define _BOARD_MODEL_H
+#endif // #define _BOARD_MODEL_H

messages.c

@@ -0,0 +1,75 @@
+#include "messages.h"
+
+#include <curses.h>
+
+#include "board_model.h"
+#include "worm.h"
+#include "worm_model.h"
+
+// Clear an entire line on the display
+void clearLineInMessageArea(const int row) {
+    move(row, 0);
+    for (int i = 1; i <= COLS; i++) {
+        addch(' ');
+    }
+}
+
+// Display the board line in order to separate the message area
+void showBorderLine() {
+    const int pos_line0 = LINES - MA_ROWS_RESERVED;
+    for (int i = 0; i < COLS; i++) {
+        move(pos_line0, i);
+        attron(COLOR_PAIR(COLP_BARRIER));
+        addch(SYMBOL_BARRIER);
+        attroff(COLOR_PAIR(COLP_BARRIER));
+    }
+}
+
+// Display status about the game in the message area
+void showStatus(const struct Worm *worm) {
+    const int pos_line2 = LINES - MA_ROWS_RESERVED + 2;
+
+    const struct Pos headpos = getWormHeadPos(worm);
+    mvprintw(pos_line2, 1, "Wurm ist an Position: y=%3d x=%3d", headpos.y,
+             headpos.x);
+}
+
+// Display a dialog in the message area and wait for confirmation
+// String prompt1 is displayed in the second line of the message area
+// String prompt2 is displayed in the  third line of the message area
+int showDialog(char *prompt1, char *prompt2) {
+    const int pos_line1 = LINES - MA_ROWS_RESERVED + 1;
+    const int pos_line2 = LINES - MA_ROWS_RESERVED + 2;
+    const int pos_line3 = LINES - MA_ROWS_RESERVED + 3;
+
+    if (prompt1 == NULL) {
+        return RES_FAILED;
+    }
+
+    // Delete lines in the message area
+    clearLineInMessageArea(pos_line1);
+    clearLineInMessageArea(pos_line2);
+    clearLineInMessageArea(pos_line3);
+
+    // Display message
+    mvprintw(pos_line2, 1, "%s", prompt1);
+    if (prompt2 != NULL) {
+        mvprintw(pos_line3, 1, "%s", prompt2);
+    }
+    refresh();
+
+    nodelay(stdscr, FALSE);
+    const int ch = getch(); // Wait for user to press an arbitrary key
+    nodelay(stdscr, TRUE);
+
+    // Delete lines in the message area
+    clearLineInMessageArea(pos_line1);
+    clearLineInMessageArea(pos_line2);
+    clearLineInMessageArea(pos_line3);
+
+    // Display changes
+    refresh();
+
+    // Return code of key pressed
+    return ch;
+}

messages.h

@@ -0,0 +1,11 @@
+#ifndef _MESSAGES_H
+#define _MESSAGES_H
+
+#include "worm_model.h"
+
+void clearLineInMessageArea(int row);
+void showBorderLine();
+void showStatus(const struct Worm *);
+int showDialog(char *prompt1, char *prompt2);
+
+#endif // #define _MESSAGES_H

prep.c

@@ -7,22 +7,22 @@ void initializeCursesApplication() {
     initscr(); // Initialize the curses screen
 
     // Note:
-    // The call to initscr() defines various global variables of the curses framework.
-    // stdscr, LINES, COLS, TRUE, FALSE
+    // The call to initscr() defines various global variables of the curses
+    // framework. stdscr, LINES, COLS, TRUE, FALSE
 
-    noecho();  // Characters typed ar not echoed
-    cbreak();  // No buffering of stdin
-    nonl();    // Do not translate 'return key' on keyboard to newline character
+    noecho(); // Characters typed ar not echoed
+    cbreak(); // No buffering of stdin
+    nonl();   // Do not translate 'return key' on keyboard to newline character
     keypad(stdscr, TRUE); // Enable the keypad
     curs_set(0);          // Make cursor invisible
     // Begin in non-single-step mode (getch will not block)
-    nodelay(stdscr, TRUE);  // make getch to be a non-blocking call
+    nodelay(stdscr, TRUE); // make getch to be a non-blocking call
 }
 
 // Reset display to normale state and terminate curses application
 void cleanupCursesApp(void) {
-    standend();   // Turn off all attributes
-    refresh();    // Write changes to terminal
-    curs_set(1);  // Set cursor state to normal visibility
-    endwin();     // Terminate curses application
+    standend();  // Turn off all attributes
+    refresh();   // Write changes to terminal
+    curs_set(1); // Set cursor state to normal visibility
+    endwin();    // Terminate curses application
 }

prep.h

@@ -5,4 +5,4 @@
 void initializeCursesApplication();
 void cleanupCursesApp();
 
-#endif  // #define _PREP_H
+#endif // #define _PREP_H