diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..dab799c
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,53 @@
+# Prerequisites
+*.d
+
+# Object files
+*.o
+*.ko
+*.obj
+*.elf
+
+# Linker output
+*.ilk
+*.map
+*.exp
+
+# Precompiled Headers
+*.gch
+*.pch
+
+# Libraries
+*.lib
+*.a
+*.la
+*.lo
+
+# Shared objects (inc. Windows DLLs)
+*.dll
+*.so
+*.so.*
+*.dylib
+
+# Executables
+*.exe
+*.out
+*.app
+*.i*86
+*.x86_64
+*.hex
+
+# Debug files
+*.dSYM/
+*.su
+*.idb
+*.pdb
+
+# Kernel Module Compile Results
+*.mod*
+*.cmd
+.tmp_versions/
+modules.order
+Module.symvers
+Mkfile.old
+dkms.conf
+
diff --git a/Makefile b/Makefile
new file mode 100644
index 0000000..cd51ad7
--- /dev/null
+++ b/Makefile
@@ -0,0 +1,70 @@
+MKDIR_P := mkdir -p
+CP := cp
+MV := mv
+CC := avr-gcc
+CCC := avr-g++
+RM_RF = rm -rf
+OCPY := avr-objcopy
+AVRDUDE := avrdude
+PORT := /dev/ttyACM0
+#PORT := usb
+#BOARD := atmega328p
+BOARD := atmega2560
+#PROGRAMMER := arduino
+PROGRAMMER := usbasp
+#PROGBOARD := m328p
+PROGBOARD := m2560
+BAUD_RATE_PROG := 115200
+FLASH_CMD := $(AVRDUDE) -b $(BAUD_RATE_PROG) -p $(PROGBOARD) -D -P $(PORT) -c $(PROGRAMMER)
+AVRSIZE := avr-size
+AVRSIZE_FLAGS := -C --mcu=$(PROGBOARD)
+
+# directories
+CWD := $(realpath .)
+BINDIR := $(CWD)/bin
+BUILDDIR := $(CWD)/build
+SRCDIR := $(CWD)/src
+INCLUDEDIR := $(CWD)/include
+
+# flas
+CFLAGS := -mmcu=$(BOARD) -Os -I$(INCLUDEDIR) -Wall -Wextra
+LDFLAGS := -mmcu=$(BOARD)
+
+# target files
+DIRS_TARGET := $(BINDIR) $(BUILDDIR)
+TARGET := $(BINDIR)/mc.hex
+TARGET_ELF := $(BINDIR)/mc.elf
+SRCFILES := $(wildcard $(SRCDIR)/*.c)
+OBJFILES := $(patsubst $(SRCDIR)/%.c,$(BUILDDIR)/%.o,$(SRCFILES))
+
+# fancy targets
+all: directories $(TARGET)
+
+directories: $(DIRS_TARGET)
+
+# less fancy targets
+
+$(DIRS_TARGET):
+ $(MKDIR_P) $@
+
+$(TARGET) : $(TARGET_ELF)
+ $(OCPY) -O ihex -j .text -j .data $^ $@
+
+$(TARGET_ELF): $(OBJFILES)
+ $(CC) $(LDFLAGS) -o $@ $^
+ $(AVRSIZE) $(AVRSIZE_FLAGS) $@
+
+$(BUILDDIR)/%.o: $(SRCDIR)/%.c
+ $(CC) $(CFLAGS) -c -o $@ $<
+
+flash: $(TARGET)
+ # For atmega 2560
+ $(FLASH_CMD) -e -U hfuse:w:0xD9:m -U lfuse:w:0xDF:m -U efuse:w:0xFF:m -U flash:w:$^:i -U efuse:w:0xfa:m
+ # For atmega 328p:
+ #$(FLASH_CMD) -e -U hfuse:w:0xD9:m -U efuse:w:0xFF:m -U lfuse:w:0xDF:m -U flash:w:$^:i -U efuse:w:0xfd:m
+ # If unknown or no fuse bits available over programmer
+ #$(FLASH_CMD) -U flash:w:$^:i
+ $(FLASH_CMD) -U flash:v:$^:i
+
+clean:
+ $(RM_RF) $(DIRS_TARGET)
diff --git a/include/16550.h b/include/16550.h
new file mode 100644
index 0000000..acc6fe8
--- /dev/null
+++ b/include/16550.h
@@ -0,0 +1,54 @@
+/* Copyright © 2020 tyrolyean
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see .
+ */
+
+#ifndef _16550_H
+#define _16550_H
+
+#include
+#include
+
+/* Registers in the 16550 UART */
+
+#define UART_REG_DLLS 0
+#define UART_REG_DLMS 1
+#define UART_REG_TXRX 0
+#define UART_REG_IER 1
+#define UART_REG_IIR 2
+#define UART_REG_LCR 3
+#define UART_REG_MCR 4
+#define UART_REG_LSR 5
+#define UART_REG_MSR 6
+#define UART_REG_SCR 7
+
+/* The printf function in the background performs automatic column wrapping by
+ * finding the first space character within 10 characters ofthe display columns
+ * and replacingit with a newline character
+ */
+#define DISPLAY_COLUMNS 80
+
+void init_16550();
+void write_to_uart(uint8_t addr, uint8_t data);
+uint8_t read_from_uart(uint8_t addr);
+
+void init_uart();
+
+int println(const char* output,...);
+int putchar_16550(char var, FILE *stream);
+void writechar_16550(char var);
+
+void routine_uart();
+
+#endif
diff --git a/include/avr.h b/include/avr.h
new file mode 100644
index 0000000..586d36f
--- /dev/null
+++ b/include/avr.h
@@ -0,0 +1,49 @@
+/* Copyright (C) 2020 tyrolyean
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see .
+ */
+
+#ifndef _AVR_H_TEXT
+#define _AVR_H_TEXT
+
+
+
+#define F_CPU 16000000UL
+#include
+
+/* Shift values for the peripherials on the control bus PORTL */
+
+#define MR_SHIFT 0
+#define WR_SHIFT 1
+#define RD_SHIFT 2
+#define CS_UART_SHIFT 3
+#define CS_DAC_SHIFT 4
+
+#define ADDR_REG PORTK
+#define DATA_REG PORTF
+#define CTRL_REG PORTL
+
+#define ADDR_DDR_REG DDRK
+#define DATA_DDR_REG DDRF
+#define CTRL_DDR_REG DDRL
+
+/* Included here to prevent accidental redefinition of F_CPU */
+#include
+
+/* Time it takes for the bus lanes to become stable for read and write access */
+#define BUS_HOLD_US 1
+
+void set_addr(uint8_t addr);
+
+#endif
diff --git a/include/dac.h b/include/dac.h
new file mode 100644
index 0000000..55631d5
--- /dev/null
+++ b/include/dac.h
@@ -0,0 +1,45 @@
+/* Copyright © 2020 tyrolyean
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see .
+ */
+
+#ifndef _DAC_H
+#define _DAC_H
+
+#include
+
+void write_to_dac(uint8_t addr, uint8_t data);
+uint8_t read_from_dac(uint8_t addr);
+
+/* The operation modes of the dac used for generation of different tones */
+#define DAC_MODE_SILENT 0
+#define DAC_MODE_SINE 1
+#define DAC_MODE_SQUARE 2
+#define DAC_MODE_SAW 3
+#define DAC_MODE_NOISE 4
+#define DAC_MODE_TRIANGLE 5
+
+extern uint8_t dac_mode;
+/* This variable is used to deviate the frequency from the baseline frequency
+ * of around 1kHz. If this integer is positive it makes the produced waveform
+ * longer, if it is negative the produced waveform becomes less sharp, but the
+ * frequency goes up. 0 is the baseline */
+extern int16_t dac_frequency_deviation;
+
+void feed_dac();
+void routine_dac();
+
+void update_sound();
+
+#endif
diff --git a/include/game.h b/include/game.h
new file mode 100644
index 0000000..5715470
--- /dev/null
+++ b/include/game.h
@@ -0,0 +1,51 @@
+/* Copyright © 2020 tyrolyean
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see .
+ */
+
+#ifndef _GAME_H
+#define _GAME_H
+
+#include
+#include
+
+extern char command_buffer[100];
+extern uint8_t command_buffer_pointer;
+
+#define COMPUTER_STATE_NOTHING 0
+#define COMPUTER_STATE_KEYBOARD 1
+#define COMPUTER_STATE_FLOPPY 2
+extern uint8_t computer_state; /* FSM for the computer */
+
+extern bool bear_shot;
+
+extern uint8_t current_room;
+
+void routine_game();
+void prepare_command_buffer();
+void ingest_user_char(char in);
+void perform_action(uint8_t action_id);
+void move_direction(uint8_t direction);
+void describe_room(uint8_t room, bool auto_desc);
+void print_inventory();
+void print_room_item();
+void consume_room_item(const char* item_name);
+
+void use_item(const char* item_name);
+void use_item_id(uint8_t item_id);
+
+bool perform_computer_action(uint8_t action_id);
+void reset_game(bool fleshed);
+void init_game();
+#endif
diff --git a/include/interrupt.h b/include/interrupt.h
new file mode 100644
index 0000000..ba1b002
--- /dev/null
+++ b/include/interrupt.h
@@ -0,0 +1,22 @@
+/* Copyright © 2020 tyrolyean
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see .
+ */
+
+#ifndef _INTERRUPT_H
+#define _INTERRUPT_H
+
+void init_interrupts();
+
+#endif
diff --git a/include/sound.h b/include/sound.h
new file mode 100644
index 0000000..d93999b
--- /dev/null
+++ b/include/sound.h
@@ -0,0 +1,47 @@
+/* Copyright © 2020 tyrolyean
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see .
+ */
+
+#ifndef _SOUND_H
+#define _SOUND_H
+
+#include
+#include
+
+struct tone_t {
+ uint8_t waveform;
+ int16_t frequency_deviation; /* */
+ uint16_t length; /* The tone length in milliseconds */
+};
+
+/* The end marker tells the sound routines where the end of a track is. It
+ * is required to be present at the end of EVERY track, otherwise the
+ * routine runs into undefined behaviour */
+#define TRACK_END_MARKER {DAC_MODE_SILENT, 0, 0}
+
+extern const struct tone_t computer_room_track[] PROGMEM;
+extern const struct tone_t lonely_road_track[] PROGMEM;
+
+#define INTRO_LEN 10350
+extern const struct tone_t intro_track[] PROGMEM;
+
+extern const struct tone_t * current_track;
+extern int16_t global_frequency_offset; /* Added to every playing song */
+
+void update_sound();
+void init_sound();
+
+
+#endif
diff --git a/include/structures.h b/include/structures.h
new file mode 100644
index 0000000..2229b2b
--- /dev/null
+++ b/include/structures.h
@@ -0,0 +1,81 @@
+/* Copyright © 2020 tyrolyean
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see .
+ */
+
+#ifndef _STRUCTURES_H
+#define _STRUCTURES_H
+
+#include
+
+#include
+#include
+#include
+
+#define NUM_ACTIONS 0x0A
+#define ACTION_HELP 0x00
+#define ACTION_NORTH 0x01
+#define ACTION_SOUTH 0x02
+#define ACTION_WEST 0x03
+#define ACTION_EAST 0x04
+#define ACTION_DESCRIBE 0x05
+#define ACTION_USE 0x06
+#define ACTION_INVENTORY 0x07
+#define ACTION_SEARCH 0x08
+#define ACTION_TAKE 0x09
+
+/* The direction in the direction table is the action_id - 1 */
+#define DIRECTION_NORTH 0x00
+#define DIRECTION_SOUTH 0x01
+#define DIRECTION_WEST 0x02
+#define DIRECTION_EAST 0x03
+
+#define NUM_ROOMS 0x0A
+#define ROOM_NOTHING 0x00
+#define ROOM_LONELYROAD 0x01
+#define ROOM_SNDIRTROAD 0x02
+#define ROOM_FIREPLACE 0x03
+#define ROOM_EWSTREET 0x04
+#define ROOM_OLDHOUSE 0x05
+#define ROOM_LIVINGROOM 0x06
+#define ROOM_ATTIC 0x07
+#define ROOM_BASEMENT 0x08
+#define ROOM_COMPUTER 0x09
+
+#define NUM_ITEMS 0x07
+#define ITEM_FLOPPY 0x00
+#define ITEM_SCREWDRIVER 0x01
+#define ITEM_KEYBOARD 0x02
+#define ITEM_SAUSAGE 0x03
+#define ITEM_FLESH 0x04
+#define ITEM_KEY 0x05
+#define ITEM_PISTOL 0x06
+
+extern const uint8_t sine_table[256] PROGMEM;
+extern const uint8_t noise_table[1024] PROGMEM;
+
+extern char* sndirtroad_msg[2];
+extern char* user_action_req_msgs[3];
+
+extern const char* info_table[];
+extern const char* action_table[NUM_ACTIONS];
+extern const char* room_table[NUM_ROOMS];
+extern char* room_description_table[NUM_ROOMS];
+extern uint8_t room_map_table[NUM_ROOMS][4];
+extern bool room_visited_table[NUM_ROOMS];
+extern const char* item_table[NUM_ITEMS];
+extern bool inventory[NUM_ITEMS];
+extern int8_t item_room_map[NUM_ROOMS];
+extern const struct tone_t * room_track_map[NUM_ROOMS];
+#endif
diff --git a/src/16550.c b/src/16550.c
new file mode 100644
index 0000000..424ba0b
--- /dev/null
+++ b/src/16550.c
@@ -0,0 +1,126 @@
+/* Copyright © 2020 tyrolyean
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see .
+ */
+
+#include "avr.h"
+#include "16550.h"
+#include "structures.h"
+#include "game.h"
+
+#include
+static FILE stdout_16550 = FDEV_SETUP_STREAM(putchar_16550, NULL,
+ _FDEV_SETUP_WRITE);
+
+
+void write_to_uart(uint8_t addr, uint8_t data){
+
+ set_addr(addr);
+ DATA_DDR_REG = 0xFF;
+ DATA_REG = data;
+ CTRL_REG &= ~(1< (DISPLAY_COLUMNS - 10)){
+ putchar_16550('\n',NULL);
+ return 0;
+ }
+ if(var == '\n'){
+ column_cnt = 0x00;
+ writechar_16550('\r');
+ }
+
+ writechar_16550(var);
+ return 0;
+}
+/* Writes a character to the 16550 uart for transmission without cr lf magic */
+void writechar_16550(char var){
+
+ for(uint32_t i = 0; i < 1000000; i++ ){
+ uint8_t received = read_from_uart(UART_REG_LSR);
+ if((received & (1<<5))){
+ break;
+ }
+ }
+
+ write_to_uart(UART_REG_TXRX,var);
+ return;
+}
+
+void routine_uart(){
+
+ uint8_t received = read_from_uart(UART_REG_LSR);
+ if(received & 0x01){
+ received = read_from_uart(UART_REG_TXRX);
+ ingest_user_char(received);
+ if(received == '\r'){
+ writechar_16550('\n');
+ }
+ writechar_16550(received); /* Echo back */
+ }
+
+ return;
+}
+
diff --git a/src/dac.c b/src/dac.c
new file mode 100644
index 0000000..1310ff6
--- /dev/null
+++ b/src/dac.c
@@ -0,0 +1,207 @@
+/* Copyright © 2020 tyrolyean
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see .
+ */
+
+#include "avr.h"
+#include "dac.h"
+#include "structures.h"
+
+#include
+
+uint8_t dac_mode = DAC_MODE_SINE;
+int16_t dac_frequency_deviation = 0;
+
+void write_to_dac(uint8_t addr, uint8_t data){
+
+
+ set_addr(addr);
+ DATA_DDR_REG = 0xFF;
+ DATA_REG = data;
+ CTRL_REG &= ~(1< the frequency made lower from baseline
+ */
+ static int16_t freq_delay_cnt = 0x00;
+ switch(dac_mode){
+
+ default:
+ case DAC_MODE_SILENT:
+ for(uint8_t i = 0; i < 0xFF; i++){
+ write_to_dac(i%2, 0);
+ }
+
+ break;
+
+ case DAC_MODE_SINE:
+ /* Generates a sine from a predetermined sine table in program
+ * space */
+ for(uint8_t i = 0; i < (0xFF/2); i++){
+ write_to_dac(1,
+ pgm_read_byte(&sine_table[threash]));
+ write_to_dac(0,
+ pgm_read_byte(&sine_table[threash]));
+
+ if(dac_frequency_deviation >=0){
+ freq_delay_cnt++;
+ if(freq_delay_cnt >=
+ dac_frequency_deviation){
+ freq_delay_cnt = 0;
+ threash++;
+
+ }
+
+ }else{
+ threash -= dac_frequency_deviation;
+ }
+
+ }
+ break;
+ case DAC_MODE_SQUARE:
+ /* Generates a square wave tone */
+ for(uint8_t i = 0; i < (0xFF/2); i++){
+ if(threash > (0xFF/2)){
+ write_to_dac(0, 0xFF);
+ write_to_dac(1, 0xFF);
+ }else{
+ write_to_dac(0, 0);
+ write_to_dac(1, 0);
+ }
+ if(dac_frequency_deviation >=0){
+ freq_delay_cnt++;
+ if(freq_delay_cnt >=
+ dac_frequency_deviation){
+ freq_delay_cnt = 0;
+ threash++;
+
+ }
+
+ }else{
+ threash -= dac_frequency_deviation;
+ }
+ }
+ break;
+ case DAC_MODE_SAW:
+ /* Generates a saw wave tone */
+ for(uint8_t i = 0; i < (0xFF/2); i++){
+ write_to_dac(0, threash);
+ write_to_dac(1, threash);
+ if(dac_frequency_deviation >=0){
+ freq_delay_cnt++;
+ if(freq_delay_cnt >=
+ dac_frequency_deviation){
+ freq_delay_cnt = 0;
+ threash++;
+
+ }
+
+ }else{
+ threash -= dac_frequency_deviation;
+ }
+ }
+ break;
+ case DAC_MODE_NOISE:
+ /* Generates white noise from a predetermined LUT
+ */
+ for(uint8_t i = 0; i < (0xFF/2); i++){
+ static uint16_t noise_cnt = 0;
+ write_to_dac(1,
+ pgm_read_byte(&noise_table[noise_cnt]));
+ write_to_dac(0,
+ pgm_read_byte(&noise_table[noise_cnt]));
+
+ noise_cnt++; /* Doesn't have frequency diversion
+ */
+ if(noise_cnt >= 1024){
+ noise_cnt = 0;
+ }
+
+ }
+ break;
+ case DAC_MODE_TRIANGLE:
+ /* Generates a triangle wave tone */
+ for(uint8_t i = 0; i < (0xFF/2); i++){
+ static int8_t direction = 1;
+ if((threash == 0xFF) | !threash){
+ direction = -direction;
+ }
+ write_to_dac(0, threash);
+ write_to_dac(1, threash);
+ if(dac_frequency_deviation >=0){
+ freq_delay_cnt++;
+ if(freq_delay_cnt >=
+ dac_frequency_deviation){
+ freq_delay_cnt = 0;
+
+ threash += direction;
+
+ }
+
+ }else{
+ if((dac_frequency_deviation *
+ direction) >
+ (0xFF - threash)){
+ threash = 0xFF;
+ continue;
+ }
+ threash = (dac_frequency_deviation *
+ direction);
+ }
+ }
+ break;
+ }
+
+ return;
+}
+
+void routine_dac(){
+
+ uint8_t received = read_from_dac(0x00);
+ if(!(received & (0x01<<0))){
+ feed_dac();
+ }
+ return;
+}
diff --git a/src/game.c b/src/game.c
new file mode 100644
index 0000000..66fa794
--- /dev/null
+++ b/src/game.c
@@ -0,0 +1,378 @@
+/* Copyright © 2020 tyrolyean
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see .
+ */
+
+#include "game.h"
+#include "structures.h"
+#include "16550.h"
+
+#include
+#include
+#include
+
+char command_buffer[100];
+uint8_t command_buffer_pointer = 0x00;
+
+uint8_t current_room = ROOM_LONELYROAD;
+
+uint8_t computer_state = 0;
+bool bear_shot = false;
+
+void routine_game(){
+
+ if(command_buffer_pointer >= sizeof(command_buffer)){
+
+ command_buffer_pointer = 0x00;
+ memset(command_buffer, 0, sizeof(command_buffer));
+
+ println("\nToo much input!");
+ return;
+ }
+
+ if(command_buffer[command_buffer_pointer-1] == '\n' ||
+ command_buffer[command_buffer_pointer-1] == '\r'){
+ /* A command from the user has been received, we are ready to
+ * do something!*/
+
+ int8_t action_id = -1;
+ for(size_t i = 0; i < sizeof(action_table)/sizeof(const char*);
+ i++){
+ if(strncasecmp(action_table[i], command_buffer,
+ strlen(action_table[i])) == 0){
+ action_id = i;
+ break;
+ }
+
+ }
+ if(action_id < 0){
+ println(info_table[1]);
+ }else{
+ perform_action(action_id);
+
+ }
+
+ command_buffer_pointer = 0x00;
+ memset(command_buffer, 0, sizeof(command_buffer));
+ }
+
+ return;
+}
+
+void ingest_user_char(char in){
+ if(in == 0x7F /* DELETE CHAR */){
+ command_buffer[command_buffer_pointer--] = 0x00;
+
+ }else{
+ command_buffer[command_buffer_pointer++] = in;
+ }
+ return;
+}
+
+void perform_action(uint8_t action_id){
+ putchar_16550('\n', NULL);
+ switch(action_id){
+ default:
+ case ACTION_HELP:
+ println("You can:");
+ for(size_t i = 0; i < NUM_ACTIONS; i++){
+ println(" %s",action_table[i]);
+ }
+ break;
+
+ case ACTION_DESCRIBE:
+ describe_room(current_room, false);
+ break;
+
+ case ACTION_NORTH:
+ case ACTION_SOUTH:
+ case ACTION_WEST:
+ case ACTION_EAST:
+ move_direction(action_id -1);
+ break;
+ case ACTION_INVENTORY:
+ print_inventory();
+ break;
+ case ACTION_SEARCH:
+ print_room_item();
+ break;
+ case ACTION_TAKE:
+ consume_room_item(command_buffer+
+ strlen(action_table[ACTION_TAKE])+1);
+ break;
+ case ACTION_USE:
+ use_item(command_buffer+
+ strlen(action_table[ACTION_USE])+1);
+ break;
+
+ };
+ println(info_table[3]);
+
+ return;
+}
+
+void move_direction(uint8_t direction){
+ if(!room_map_table[current_room][direction]){
+ println(info_table[4]);
+ return;
+ }
+ println("Moving towards %s",action_table[direction+1]);
+ current_room = room_map_table[current_room][direction];
+ describe_room(current_room,true);
+ current_track = room_track_map[current_room];
+ return;
+}
+
+void describe_room(uint8_t room, bool auto_desc){
+
+ println(room_table[room]);
+ if(room_visited_table[room] && auto_desc){
+ room_visited_table[room] = true;
+ return;
+ }
+ room_visited_table[room] = true;
+ putchar_16550('\n', NULL);
+ println(room_description_table[room]);
+
+ return;
+}
+
+void print_inventory(){
+ bool found_item = false;
+ for(size_t i = 0; i < NUM_ITEMS; i++){
+ if(inventory[i]){
+ found_item = true;
+ break;
+ }
+ }
+ if(found_item){
+ println("You have:");
+ for(size_t i = 0; i < NUM_ITEMS; i++){
+ if(inventory[i]){
+ println(" %s",item_table[i]);
+ }
+ }
+
+ }else{
+ println("Your inventory is empty");
+ }
+
+ return;
+}
+
+void print_room_item(){
+ if(item_room_map[current_room] < 0){
+ println(info_table[6]);
+ }else{
+ println("You found a %s",
+ item_table[item_room_map[current_room]]);
+ }
+ return;
+}
+
+void consume_room_item(const char* item_name){
+ if(item_room_map[current_room] < 0){
+ println(info_table[6]);
+ }else{
+ for(int8_t i = 0; i < NUM_ITEMS; i++){
+ if(strncasecmp(item_table[i], item_name,
+ strlen(item_table[i])) == 0){
+
+ if(item_room_map[current_room] != i){
+ break;
+ }
+
+ println("You took the %s",
+ item_table[item_room_map[
+ current_room]]);
+
+ inventory[item_room_map[current_room]] = true;
+ item_room_map[current_room] = -1;
+ return;
+ }
+
+ }
+ println("That's not here...");
+
+ }
+ return;
+}
+void use_item(const char* item_name){
+
+ for(size_t i = 0; i < NUM_ITEMS; i++){
+ if(strncasecmp(item_table[i], item_name,
+ strlen(item_table[i])) == 0){
+ use_item_id(i);
+ return;
+ }
+
+ }
+ println(info_table[2]);
+ return;
+
+}
+
+void use_item_id(uint8_t item_id){
+ if(!inventory[item_id]){
+ println(info_table[2]);
+ return;
+ }
+
+
+ switch(item_id){
+ case ITEM_SAUSAGE:
+ if(current_room == ROOM_SNDIRTROAD){
+ inventory[ITEM_SAUSAGE] = false;
+ room_map_table[current_room][DIRECTION_NORTH] =
+ ROOM_FIREPLACE;
+ println(info_table[10]);
+ return;
+ }
+ break;
+ case ITEM_PISTOL:
+ if(current_room == ROOM_SNDIRTROAD){
+ room_map_table[current_room][DIRECTION_NORTH] =
+ ROOM_FIREPLACE;
+ println(info_table[7]);
+ bear_shot = true;
+ return;
+ } else if(current_room == ROOM_NOTHING){
+ /* The real end i guess. I won't put this in the
+ * info table as it *SHOULD* only be displayed
+ * once.
+ */
+ println("You cry for help. It's no use. You "
+ "attempt to shoot yourself. It's no "
+ "use... You run out of bullets");
+ inventory[ITEM_PISTOL] = false;
+ return;
+ }
+ break;
+ case ITEM_KEY:
+ if(current_room == ROOM_EWSTREET){
+ inventory[ITEM_KEY] = false;
+ room_map_table[current_room][DIRECTION_NORTH] =
+ ROOM_OLDHOUSE;
+ println(info_table[13]);
+ return;
+ }
+ break;
+ case ITEM_FLOPPY:
+ case ITEM_FLESH:
+ case ITEM_SCREWDRIVER:
+ case ITEM_KEYBOARD:
+ if(current_room == ROOM_COMPUTER){
+ if(perform_computer_action(item_id)){
+ return;
+ }
+
+ }
+ break;
+ };
+ println(info_table[2]);
+
+ return;
+}
+
+bool perform_computer_action(uint8_t item_id){
+
+ static bool fleshed = false;
+ if(item_id == ITEM_KEYBOARD &&
+ computer_state == COMPUTER_STATE_NOTHING){
+ computer_state = COMPUTER_STATE_KEYBOARD;
+ inventory[item_id] = false;
+ println("You connected the keyboard");
+ return true;
+ }
+
+ if(item_id == ITEM_FLOPPY &&
+ computer_state == COMPUTER_STATE_KEYBOARD){
+ computer_state = COMPUTER_STATE_FLOPPY;
+ inventory[item_id] = false;
+ println("You inseted the floppy disk");
+ return true;
+ }
+ if(item_id == ITEM_FLESH &&
+ computer_state == COMPUTER_STATE_KEYBOARD){
+ computer_state = COMPUTER_STATE_FLOPPY;
+ inventory[item_id] = false;
+ println("You inserted the flesh into the floppy drive");
+ fleshed = true;
+ return true;
+ }
+ if(item_id == ITEM_SCREWDRIVER &&
+ computer_state == COMPUTER_STATE_FLOPPY){
+ computer_state = COMPUTER_STATE_FLOPPY;
+ inventory[item_id] = false;
+ /* Perform a reset of the game */
+ println("You start the computer with the screwdriver, sit down"
+ " and watch it boot into a textadventure:");
+
+ reset_game(fleshed);
+ return true;
+ }
+
+ return false;
+}
+/* Resets the game into "original" state or the bear dead state or the FLESH
+ * game state. FLESH is basically the end. You need to reset your computer
+ * afterwards.
+ */
+void reset_game(bool fleshed){
+
+ /* clear inventory */
+ memset(inventory, 0, sizeof(inventory));
+ /* Reset rooms visited */
+ memset(room_visited_table, 0, sizeof(inventory));
+ /* Reset items in rooms */
+ for(size_t i = 0; i < NUM_ROOMS; i++){
+ item_room_map[i] = -1;
+ }
+
+ if(fleshed){
+ current_room = ROOM_NOTHING;
+ inventory[ITEM_PISTOL] = true;
+ }else if(bear_shot){
+ current_room = ROOM_LONELYROAD;
+ room_description_table[ROOM_SNDIRTROAD] = sndirtroad_msg[1];
+ item_room_map[ROOM_SNDIRTROAD] = ITEM_FLESH;
+
+ }else{
+ current_room = ROOM_LONELYROAD;
+ room_map_table[ROOM_SNDIRTROAD][DIRECTION_NORTH] = 0x00;
+ item_room_map[ROOM_SNDIRTROAD] = ITEM_SAUSAGE;
+ item_room_map[ROOM_LONELYROAD] = ITEM_PISTOL;
+ item_room_map[ROOM_BASEMENT] = ITEM_FLOPPY;
+ }
+
+ item_room_map[ROOM_EWSTREET] = ITEM_KEY;
+ item_room_map[ROOM_OLDHOUSE] = ITEM_SCREWDRIVER;
+ item_room_map[ROOM_ATTIC] = ITEM_KEYBOARD;
+
+ computer_state = COMPUTER_STATE_NOTHING;
+
+ room_map_table[ROOM_EWSTREET][DIRECTION_NORTH] = 0x00;
+ current_track = room_track_map[current_room];
+ describe_room(current_room, false);
+
+
+ return;
+}
+
+void init_game(){
+
+ room_description_table[ROOM_SNDIRTROAD] = sndirtroad_msg[0];
+ info_table[3] = user_action_req_msgs[0];
+ return;
+}
diff --git a/src/interrupt.c b/src/interrupt.c
new file mode 100644
index 0000000..4737080
--- /dev/null
+++ b/src/interrupt.c
@@ -0,0 +1,36 @@
+/* Copyright © 2020 tyrolyean
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see .
+ */
+
+#include "interrupt.h"
+#include "dac.h"
+#include
+
+void init_interrupts(){
+ /* Initialize the timer interrupt */
+ TCCR0A = (1 << COM0A1) | (1 << WGM11);
+ TCCR0B = (1 << CS02);
+ OCR0A = 64; /* Interrupt fires every Millisecond */
+ TIMSK0 = (1 << OCIE0A);
+
+}
+
+
+ISR(TIMER0_COMPA_vect)
+{
+ update_sound();
+}
+
+
diff --git a/src/main.c b/src/main.c
new file mode 100644
index 0000000..fe18e37
--- /dev/null
+++ b/src/main.c
@@ -0,0 +1,112 @@
+/* Copyright © 2020 tyrolyean
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see .
+ */
+
+#include "avr.h"
+#include "structures.h"
+#include "16550.h"
+#include "dac.h"
+#include "interrupt.h"
+#include "sound.h"
+#include "game.h"
+
+#include
+#include
+#include
+#include
+#include
+
+
+/* Included early on the prevent the watchdog from killing the already killed
+ * microcontroller because of init delay
+ */
+
+uint8_t mcusr_mirror __attribute__ ((section (".noinit")));
+void get_mcusr(void) \
+ __attribute__((naked)) \
+ __attribute__((section(".init3")));
+
+void get_mcusr(void)
+{
+ mcusr_mirror = MCUSR;
+ MCUSR = 0;
+ wdt_disable();
+}
+
+/* Function used to be more complicated, still remains for readability reasons
+ */
+
+void set_addr(uint8_t addr){
+
+ ADDR_REG = addr;
+ return;
+}
+
+void reset_modules(){
+
+ /* Setup Data Direction Registers and populate with sane default
+ values */
+ DATA_DDR_REG = 0xFF; /* Data Bus */
+ ADDR_DDR_REG = 0xFF; /* Address Bus */
+ CTRL_DDR_REG= 0xFF; /* Control Bus */
+ ADDR_REG = 0x00;
+ DATA_REG = 0x00;
+ CTRL_REG = 0x00;
+
+ /* Cleanly reset the dac and the uart */
+ CTRL_REG |= (1<.
+ */
+
+
+#include "sound.h"
+#include "sound.h"
+#include "dac.h"
+
+#include
+#include
+
+const struct tone_t computer_room_track[] PROGMEM =
+{
+ {DAC_MODE_SQUARE, 0,100},
+ {DAC_MODE_SQUARE, 10,100},
+ {DAC_MODE_SQUARE, 0,100},
+ {DAC_MODE_SQUARE, 10,100},
+ {DAC_MODE_SQUARE, 0,100},
+ {DAC_MODE_NOISE, 0,200},
+ {DAC_MODE_SINE, 10,50},
+ {DAC_MODE_SINE, -10,50},
+ {DAC_MODE_SINE, 10,50},
+ {DAC_MODE_SINE, -10,50},
+
+ {DAC_MODE_SQUARE, 0,100},
+ {DAC_MODE_SQUARE, 10,100},
+ {DAC_MODE_SQUARE, 0,100},
+ {DAC_MODE_SQUARE, 10,100},
+ {DAC_MODE_SQUARE, 0,100},
+ {DAC_MODE_NOISE, 0,200},
+ {DAC_MODE_SINE, 10,50},
+ {DAC_MODE_SINE, -10,50},
+ {DAC_MODE_SINE, 10,50},
+ {DAC_MODE_SINE, -10,50},
+
+ {DAC_MODE_SQUARE, 0,100},
+ {DAC_MODE_SQUARE, 10,100},
+ {DAC_MODE_SQUARE, 0,100},
+ {DAC_MODE_SQUARE, 10,100},
+ {DAC_MODE_SQUARE, 0,100},
+ {DAC_MODE_NOISE, 0,200},
+ {DAC_MODE_SINE, 10,50},
+ {DAC_MODE_SINE, -10,50},
+ {DAC_MODE_SINE, 10,50},
+ {DAC_MODE_SINE, -10,50},
+
+ {DAC_MODE_SQUARE, 0,100},
+ {DAC_MODE_SQUARE, 10,100},
+ {DAC_MODE_SQUARE, 0,100},
+ {DAC_MODE_SQUARE, 10,100},
+ {DAC_MODE_SQUARE, 0,100},
+ {DAC_MODE_NOISE, 0,200},
+ {DAC_MODE_SINE, 10,50},
+ {DAC_MODE_SINE, -10,50},
+ {DAC_MODE_SINE, 10,50},
+ {DAC_MODE_SINE, -10,50},
+
+ {DAC_MODE_SQUARE, 0,100},
+ {DAC_MODE_SQUARE, 10,100},
+ {DAC_MODE_SQUARE, 0,100},
+ {DAC_MODE_SQUARE, 10,100},
+ {DAC_MODE_SQUARE, 0,100},
+ {DAC_MODE_NOISE, 0,200},
+ {DAC_MODE_SINE, 10,50},
+ {DAC_MODE_SINE, -10,50},
+ {DAC_MODE_SINE, 10,50},
+ {DAC_MODE_SINE, -10,50},
+
+ {DAC_MODE_SQUARE, -2,100},
+ {DAC_MODE_SQUARE, 8,100},
+ {DAC_MODE_SQUARE, -2,100},
+ {DAC_MODE_SQUARE, 8,100},
+ {DAC_MODE_SQUARE, -2,100},
+ {DAC_MODE_NOISE, 0,200},
+ {DAC_MODE_SINE, 12,50},
+ {DAC_MODE_SINE, -8,50},
+ {DAC_MODE_SINE, 12,50},
+ {DAC_MODE_SINE, -8,50},
+
+ {DAC_MODE_SQUARE, -3,100},
+ {DAC_MODE_SQUARE, 7,100},
+ {DAC_MODE_SQUARE, -3,100},
+ {DAC_MODE_SQUARE, 7,100},
+ {DAC_MODE_SQUARE, -3,100},
+ {DAC_MODE_NOISE, 0,200},
+ {DAC_MODE_SINE, 13,50},
+ {DAC_MODE_SINE, -7,50},
+ {DAC_MODE_SINE, 13,50},
+ {DAC_MODE_SINE, -7,50},
+
+ TRACK_END_MARKER
+};
+
+const struct tone_t lonely_road_track[] PROGMEM =
+{
+
+ {DAC_MODE_SQUARE, -2,80},
+ {DAC_MODE_SQUARE, -3,80},
+ {DAC_MODE_SAW, -4,170},
+ {DAC_MODE_SILENT, 0,30},
+ {DAC_MODE_SAW, -6,170},
+ {DAC_MODE_SILENT, 0,30},
+ {DAC_MODE_SAW, -6,170},
+ {DAC_MODE_SILENT, 0,30},
+
+ {DAC_MODE_SQUARE, -2,80},
+ {DAC_MODE_SQUARE, -3,80},
+ {DAC_MODE_SAW, -4,170},
+ {DAC_MODE_SILENT, 0,30},
+ {DAC_MODE_SAW, -6,170},
+ {DAC_MODE_SILENT, 0,30},
+ {DAC_MODE_SAW, -6,170},
+ {DAC_MODE_SILENT, 0,30},
+
+ {DAC_MODE_SQUARE, -2,80},
+ {DAC_MODE_SQUARE, -3,80},
+ {DAC_MODE_SAW, -4,170},
+ {DAC_MODE_SILENT, 0,30},
+ {DAC_MODE_SAW, -6,170},
+ {DAC_MODE_SILENT, 0,30},
+ {DAC_MODE_SAW, -6,300},
+ {DAC_MODE_SAW, -4,130},
+ {DAC_MODE_SAW, -2,130},
+ {DAC_MODE_SILENT, 0,80},
+
+
+ {DAC_MODE_SQUARE, -1,80},
+ {DAC_MODE_SQUARE, -2,80},
+ {DAC_MODE_SAW, -3,170},
+ {DAC_MODE_SILENT, 0,20},
+ {DAC_MODE_SAW, -5,170},
+ {DAC_MODE_SILENT, 0,20},
+ {DAC_MODE_SAW, -5,170},
+ {DAC_MODE_SILENT, 0,30},
+
+ {DAC_MODE_SQUARE, -1,80},
+ {DAC_MODE_SQUARE, -2,80},
+ {DAC_MODE_SAW, -3,170},
+ {DAC_MODE_SILENT, 0,20},
+ {DAC_MODE_SAW, -5,170},
+ {DAC_MODE_SILENT, 0,20},
+ {DAC_MODE_SAW, -5,170},
+ {DAC_MODE_SILENT, 0,20},
+
+ {DAC_MODE_SQUARE, -1,80},
+ {DAC_MODE_SQUARE, -2,80},
+ {DAC_MODE_SAW, -3,170},
+ {DAC_MODE_SILENT, 0,30},
+ {DAC_MODE_SAW, -5,170},
+ {DAC_MODE_SILENT, 0,30},
+ {DAC_MODE_SAW, -5,300},
+ {DAC_MODE_SAW, -3,130},
+ {DAC_MODE_SAW, -1,130},
+ {DAC_MODE_SILENT, 0,80},
+ TRACK_END_MARKER
+};
+
+const struct tone_t intro_track[] PROGMEM =
+{
+ {DAC_MODE_SQUARE, -3,200},
+ {DAC_MODE_SQUARE, -4,200},
+ {DAC_MODE_SQUARE, -5,200},
+ {DAC_MODE_SQUARE, -3,200},
+ {DAC_MODE_SQUARE, -4,200},
+ {DAC_MODE_SQUARE, -5,200},
+ {DAC_MODE_SQUARE, -3,200},
+ {DAC_MODE_SQUARE, -4,200},
+ {DAC_MODE_SQUARE, -5,200},
+ {DAC_MODE_SQUARE, -3,200},
+ {DAC_MODE_SQUARE, -4,200},
+ {DAC_MODE_SQUARE, -5,200},
+
+
+ {DAC_MODE_SQUARE, -3,200},
+ {DAC_MODE_SQUARE, -4,200},
+ {DAC_MODE_SQUARE, -5,200},
+ {DAC_MODE_SQUARE, -3,200},
+ {DAC_MODE_SQUARE, -4,200},
+ {DAC_MODE_SQUARE, -5,200},
+ {DAC_MODE_SQUARE, -3,200},
+ {DAC_MODE_SQUARE, -4,200},
+ {DAC_MODE_SQUARE, -5,200},
+ {DAC_MODE_SQUARE, -3,200},
+ {DAC_MODE_SQUARE, -4,200},
+ {DAC_MODE_SQUARE, -5,200},
+
+ {DAC_MODE_SQUARE, -3,400},
+ {DAC_MODE_SQUARE, -4,400},
+ {DAC_MODE_SQUARE, -5,400},
+ {DAC_MODE_SQUARE, -3,500},
+ {DAC_MODE_SQUARE, -4,550},
+ {DAC_MODE_SQUARE, -5,600},
+
+ {DAC_MODE_SQUARE, -3,800},
+ {DAC_MODE_SQUARE, -4,900},
+ {DAC_MODE_SQUARE, -5,1000},
+
+ {DAC_MODE_SILENT, 0,1000},
+
+ TRACK_END_MARKER
+};
+
+const struct tone_t *current_track = NULL;
+int16_t global_frequency_offset = 0x00;
+
+/* Loops a track indefinitely and changes voices according to predefined tables.
+ * A new track resets the internal state. A voice with a length of 0ms is used
+ * to mark the end of a track and continue at the beginning
+ */
+void update_sound(){
+
+ static uint16_t audio_time = 0;
+ static size_t tone_pointer = 0x00;
+ static struct tone_t current_tone = {DAC_MODE_SILENT, 0,0};
+ if(current_track == NULL){
+ /* ABORT */
+ audio_time = 0x00;
+ return;
+ }
+ audio_time++;
+ static const struct tone_t * old_track = NULL;
+
+ if(audio_time >= current_tone.length ||
+ current_track != old_track){
+
+ if(old_track != current_track){
+ tone_pointer = 0;
+ audio_time = 0x00;
+ old_track = current_track;
+ }
+ memcpy_P(¤t_tone,&(current_track[tone_pointer]),
+ sizeof(current_tone));
+
+ if(current_tone.length == 0){
+ tone_pointer = 0;
+ memcpy_P(¤t_tone,&(current_track[tone_pointer]),
+ sizeof(current_tone));
+
+ }
+
+ dac_mode = current_tone.waveform;
+ dac_frequency_deviation = current_tone.frequency_deviation +
+ global_frequency_offset;
+ audio_time = 0x00;
+ tone_pointer++;
+ }
+ return;
+}
diff --git a/src/structures.c b/src/structures.c
new file mode 100644
index 0000000..e957dc7
--- /dev/null
+++ b/src/structures.c
@@ -0,0 +1,480 @@
+/* Copyright © 2020 tyrolyean
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see .
+ */
+
+#include "structures.h"
+#include
+
+const uint8_t sine_table[256] PROGMEM = {
+ 0x7f,0x82,0x85,0x88,
+ 0x8c,0x8f,0x92,0x95,
+ 0x98,0x9b,0x9e,0xa1,
+ 0xa4,0xa7,0xaa,0xad,
+ 0xb0,0xb3,0xb6,0xb9,
+ 0xbb,0xbe,0xc1,0xc3,
+ 0xc6,0xc9,0xcb,0xce,
+ 0xd0,0xd3,0xd5,0xd7,
+ 0xd9,0xdc,0xde,0xe0,
+ 0xe2,0xe4,0xe6,0xe8,
+ 0xe9,0xeb,0xed,0xee,
+ 0xf0,0xf1,0xf2,0xf4,
+ 0xf5,0xf6,0xf7,0xf8,
+ 0xf9,0xfa,0xfb,0xfc,
+ 0xfc,0xfd,0xfd,0xfe,
+ 0xfe,0xfe,0xfe,0xfe,
+ 0xfe,0xfe,0xfe,0xfe,
+ 0xfe,0xfd,0xfd,0xfc,
+ 0xfc,0xfb,0xfa,0xfa,
+ 0xf9,0xf8,0xf7,0xf6,
+ 0xf4,0xf3,0xf2,0xf0,
+ 0xef,0xed,0xec,0xea,
+ 0xe8,0xe7,0xe5,0xe3,
+ 0xe1,0xdf,0xdd,0xdb,
+ 0xd8,0xd6,0xd4,0xd1,
+ 0xcf,0xcc,0xca,0xc7,
+ 0xc5,0xc2,0xbf,0xbd,
+ 0xba,0xb7,0xb4,0xb1,
+ 0xaf,0xac,0xa9,0xa6,
+ 0xa3,0xa0,0x9d,0x9a,
+ 0x96,0x93,0x90,0x8d,
+ 0x8a,0x87,0x84,0x81,
+ 0x7d,0x7a,0x77,0x74,
+ 0x71,0x6e,0x6b,0x68,
+ 0x64,0x61,0x5e,0x5b,
+ 0x58,0x55,0x52,0x4f,
+ 0x4d,0x4a,0x47,0x44,
+ 0x41,0x3f,0x3c,0x39,
+ 0x37,0x34,0x32,0x2f,
+ 0x2d,0x2a,0x28,0x26,
+ 0x23,0x21,0x1f,0x1d,
+ 0x1b,0x19,0x17,0x16,
+ 0x14,0x12,0x11,0xf,
+ 0xe,0xc,0xb,0xa,
+ 0x8,0x7,0x6,0x5,
+ 0x4,0x4,0x3,0x2,
+ 0x2,0x1,0x1,0x0,
+ 0x0,0x0,0x0,0x0,
+ 0x0,0x0,0x0,0x0,
+ 0x0,0x1,0x1,0x2,
+ 0x2,0x3,0x4,0x5,
+ 0x6,0x7,0x8,0x9,
+ 0xa,0xc,0xd,0xe,
+ 0x10,0x11,0x13,0x15,
+ 0x16,0x18,0x1a,0x1c,
+ 0x1e,0x20,0x22,0x25,
+ 0x27,0x29,0x2b,0x2e,
+ 0x30,0x33,0x35,0x38,
+ 0x3b,0x3d,0x40,0x43,
+ 0x45,0x48,0x4b,0x4e,
+ 0x51,0x54,0x57,0x5a,
+ 0x5d,0x60,0x63,0x66,
+ 0x69,0x6c,0x6f,0x72,
+ 0x76,0x79,0x7c,0x7f,
+};
+
+const uint8_t noise_table[1024] PROGMEM = {
+ 0x30, 0xc, 0x3, 0xdf,
+ 0x31, 0xfa, 0x2b, 0x78,
+ 0xd5, 0xd8, 0x6c, 0x29,
+ 0x45, 0xa1, 0x2, 0x69,
+ 0x69, 0x91, 0x8d, 0x65,
+ 0x71, 0xb8, 0x43, 0xde,
+ 0xf2, 0xf6, 0x78, 0x6e,
+ 0x1d, 0xbf, 0x34, 0x4e,
+ 0xcb, 0x38, 0x2e, 0xfd,
+ 0x32, 0x59, 0x75, 0x7,
+ 0x32, 0xe2, 0x31, 0x77,
+ 0x84, 0x33, 0xe1, 0xed,
+ 0xc5, 0x6e, 0x52, 0x36,
+ 0x27, 0x96, 0x15, 0x19,
+ 0x8d, 0x8d, 0x88, 0xab,
+ 0x4d, 0xbc, 0xf9, 0x18,
+ 0xf5, 0x27, 0x16, 0x27,
+ 0x81, 0x8c, 0x2f, 0xb4,
+ 0x6e, 0x60, 0x2b, 0xf2,
+ 0x94, 0xc, 0xe0, 0x59,
+ 0x7b, 0x33, 0x8f, 0xa3,
+ 0xc9, 0xa4, 0xbd, 0x57,
+ 0x32, 0x45, 0x2, 0x7f,
+ 0x2, 0xfb, 0x98, 0xf7,
+ 0x23, 0xae, 0x1e, 0xa5,
+ 0x3a, 0x4d, 0x59, 0xa9,
+ 0xae, 0x84, 0x9b, 0x42,
+ 0x91, 0x7c, 0x9b, 0xc,
+ 0xb0, 0x2b, 0xb0, 0x7a,
+ 0xcf, 0x6d, 0xd1, 0x2,
+ 0xb2, 0xd3, 0x81, 0xb4,
+ 0xce, 0x19, 0xac, 0xf2,
+ 0xc7, 0xcb, 0x97, 0x2,
+ 0x18, 0xf0, 0xab, 0xc7,
+ 0x74, 0x47, 0x9, 0x6,
+ 0xc4, 0xa5, 0x13, 0x74,
+ 0xd0, 0xc3, 0xee, 0xa0,
+ 0x30, 0xbf, 0xa2, 0xe2,
+ 0x92, 0x24, 0x97, 0x61,
+ 0x3d, 0x44, 0x53, 0x5,
+ 0xf, 0xea, 0x7, 0x28,
+ 0xda, 0xb3, 0xef, 0x4f,
+ 0xfa, 0xf9, 0x55, 0xbe,
+ 0x9f, 0x68, 0x33, 0x6f,
+ 0x2b, 0x21, 0x10, 0x5c,
+ 0xe0, 0xb2, 0x3f, 0x73,
+ 0xd6, 0xd7, 0xd4, 0x14,
+ 0x1b, 0x27, 0x1a, 0x2a,
+ 0x12, 0x21, 0x53, 0xec,
+ 0xd5, 0x42, 0x3c, 0xcf,
+ 0x3c, 0x91, 0x8e, 0xdb,
+ 0xfa, 0xc2, 0x4b, 0x26,
+ 0xe3, 0x5b, 0x82, 0xc4,
+ 0xe, 0xc1, 0x37, 0xe5,
+ 0x98, 0xb, 0xfa, 0xb4,
+ 0x33, 0x14, 0xde, 0x45,
+ 0x36, 0x31, 0x32, 0xb,
+ 0x74, 0x6e, 0xdb, 0xb1,
+ 0x0, 0x6a, 0x8c, 0xfa,
+ 0x2c, 0xd7, 0x21, 0xf,
+ 0x33, 0xa3, 0xd3, 0x42,
+ 0x65, 0xa, 0x27, 0xfe,
+ 0x16, 0x21, 0xb2, 0x49,
+ 0x35, 0x91, 0x8e, 0x6b,
+ 0xc3, 0xc0, 0x77, 0x38,
+ 0x2e, 0x52, 0xe9, 0x2f,
+ 0xbc, 0x76, 0x29, 0xe8,
+ 0x4d, 0x4b, 0xf7, 0x81,
+ 0xef, 0xcb, 0xc3, 0x54,
+ 0xd5, 0xeb, 0x53, 0xec,
+ 0xd, 0x6, 0x35, 0x43,
+ 0x98, 0xc3, 0xaf, 0x5b,
+ 0x84, 0x26, 0x94, 0xb3,
+ 0x78, 0x7d, 0xe2, 0x35,
+ 0xf3, 0xc, 0x1d, 0x41,
+ 0x57, 0x15, 0xc3, 0x46,
+ 0xe0, 0x87, 0x9b, 0xb6,
+ 0x72, 0xee, 0xa3, 0x7f,
+ 0xf5, 0xd8, 0xc2, 0x8d,
+ 0x9c, 0x72, 0xe9, 0x20,
+ 0x98, 0x7d, 0xd3, 0x11,
+ 0xfb, 0xb5, 0x46, 0xef,
+ 0xc1, 0x64, 0x31, 0x19,
+ 0x79, 0xf4, 0x5f, 0x5a,
+ 0x7b, 0xfa, 0x11, 0xee,
+ 0xe9, 0xb4, 0x6e, 0xde,
+ 0x8c, 0x31, 0x6c, 0x29,
+ 0xa3, 0x55, 0x49, 0x3b,
+ 0xd3, 0x1c, 0x4d, 0xce,
+ 0xd2, 0x93, 0xbe, 0x94,
+ 0xf7, 0xef, 0xad, 0x71,
+ 0xe4, 0xd, 0xcc, 0x60,
+ 0x8, 0xdd, 0x4e, 0xf1,
+ 0x92, 0xbc, 0xd0, 0x1f,
+ 0xed, 0x3c, 0x48, 0x90,
+ 0x92, 0x91, 0xcc, 0x65,
+ 0xae, 0x19, 0x34, 0x81,
+ 0xad, 0xf2, 0x15, 0xa5,
+ 0xe2, 0xc3, 0x17, 0xc6,
+ 0xd0, 0xe3, 0x27, 0xd8,
+ 0xc1, 0x75, 0xca, 0x53,
+ 0x32, 0x9b, 0x72, 0x1f,
+ 0xd8, 0xbb, 0xb0, 0x6a,
+ 0x4d, 0x7d, 0xd0, 0xfb,
+ 0x97, 0x4, 0x7d, 0x45,
+ 0xf7, 0x93, 0xea, 0xd9,
+ 0x56, 0x1, 0xa0, 0x27,
+ 0xe4, 0xc7, 0x0, 0xa5,
+ 0x3d, 0xcb, 0xf9, 0x6f,
+ 0x66, 0x6c, 0x8f, 0x3f,
+ 0x27, 0x40, 0xa9, 0x74,
+ 0xbe, 0x7a, 0x70, 0x55,
+ 0x7f, 0xee, 0x9a, 0x76,
+ 0x81, 0x85, 0x50, 0xd7,
+ 0x87, 0xf1, 0xff, 0x6b,
+ 0xb9, 0xff, 0x11, 0xf7,
+ 0xca, 0xb, 0x67, 0x31,
+ 0x77, 0xf7, 0x70, 0x9f,
+ 0x37, 0x1a, 0x14, 0xf6,
+ 0x94, 0x85, 0x4b, 0x13,
+ 0x73, 0xe6, 0x8a, 0xf4,
+ 0x6c, 0xdb, 0xcb, 0xf3,
+ 0xcc, 0xcb, 0x5f, 0x86,
+ 0xca, 0x71, 0x7d, 0x95,
+ 0x7c, 0xe4, 0xc6, 0xf4,
+ 0xdc, 0x36, 0x93, 0x13,
+ 0x50, 0xa7, 0xa, 0xe5,
+ 0x2d, 0x55, 0xf9, 0xa0,
+ 0x3c, 0x83, 0x94, 0xa9,
+ 0x5f, 0x60, 0x9c, 0x2b,
+ 0x2b, 0xfc, 0xb2, 0xf6,
+ 0x6d, 0x30, 0x8b, 0xe9,
+ 0x14, 0x51, 0xde, 0xf0,
+ 0x88, 0x71, 0x4, 0xd8,
+ 0x19, 0xe, 0xbe, 0x46,
+ 0x64, 0xb7, 0xe6, 0xa1,
+ 0x3b, 0x7b, 0x4a, 0x9a,
+ 0xdb, 0xe7, 0xc6, 0x7,
+ 0xe3, 0x78, 0xfd, 0x51,
+ 0xa8, 0x88, 0x3b, 0xbd,
+ 0xda, 0x19, 0xae, 0x62,
+ 0x8a, 0xb3, 0x3a, 0xa4,
+ 0xc2, 0xf9, 0xeb, 0x26,
+ 0xb0, 0xd2, 0xc8, 0xec,
+ 0x4d, 0x13, 0x86, 0x29,
+ 0xfa, 0x4d, 0x30, 0xde,
+ 0xc6, 0x2e, 0x2f, 0x6f,
+ 0xb6, 0x6a, 0x2d, 0x90,
+ 0x83, 0xdb, 0xf2, 0xe,
+ 0x8f, 0x2d, 0xb3, 0x51,
+ 0x27, 0x9e, 0x78, 0xd8,
+ 0x71, 0x40, 0xc4, 0xbe,
+ 0x54, 0x4b, 0xe8, 0x4e,
+ 0x98, 0x18, 0x2d, 0x5f,
+ 0x46, 0x5d, 0xce, 0xfd,
+ 0xc7, 0xfb, 0x8e, 0x4b,
+ 0xd7, 0x81, 0x5a, 0x66,
+ 0xaf, 0xe, 0xb7, 0xd6,
+ 0xac, 0x2f, 0xae, 0x1d,
+ 0x70, 0x72, 0xdc, 0xc4,
+ 0xbd, 0xc4, 0x13, 0x56,
+ 0xdd, 0x40, 0xb6, 0x24,
+ 0x9d, 0x84, 0x21, 0x65,
+ 0x80, 0xb0, 0xb1, 0x57,
+ 0x31, 0xb, 0xbd, 0xe0,
+ 0x19, 0x75, 0xb6, 0xc6,
+ 0xa5, 0x64, 0xe4, 0x15,
+ 0xd7, 0xc1, 0xda, 0x95,
+ 0x85, 0xed, 0xec, 0x63,
+ 0x2e, 0xa2, 0x87, 0xcc,
+ 0x26, 0xa9, 0x32, 0xa6,
+ 0x59, 0xe3, 0xfd, 0x8a,
+ 0xef, 0xbb, 0x6b, 0x9,
+ 0x30, 0x21, 0xcf, 0xd5,
+ 0x86, 0xb4, 0xeb, 0x5d,
+ 0x75, 0xc5, 0xf3, 0xfb,
+ 0xb3, 0xdf, 0x5e, 0xe2,
+ 0x81, 0xe6, 0xaf, 0xa7,
+ 0x8f, 0xe1, 0x4e, 0xe8,
+ 0xc5, 0x4c, 0x73, 0xb4,
+ 0x7, 0xdf, 0xbe, 0x38,
+ 0x1, 0x8e, 0xd, 0x87,
+ 0x42, 0xf8, 0xe5, 0xb8,
+ 0xbe, 0xd8, 0xb4, 0x72,
+ 0xb7, 0x12, 0x54, 0x39,
+ 0xf9, 0x4, 0xe0, 0x88,
+ 0xe6, 0x2f, 0x71, 0xab,
+ 0x7b, 0xe5, 0x60, 0x83,
+ 0xc4, 0x1e, 0xbb, 0xc5,
+ 0xac, 0xc9, 0x4d, 0xef,
+ 0xc2, 0x33, 0xa7, 0x80,
+ 0xc, 0x5b, 0xf3, 0xc3,
+ 0x6e, 0x48, 0xfc, 0x67,
+ 0x4c, 0xdd, 0xf0, 0x32,
+ 0xd, 0x61, 0xdd, 0x88,
+ 0x47, 0x3e, 0xb, 0xb,
+ 0x5c, 0xc7, 0xd1, 0x9,
+ 0x90, 0x1e, 0xf8, 0x52,
+ 0x52, 0x9f, 0xd2, 0x5e,
+ 0xfb, 0xc6, 0x22, 0x69,
+ 0xe, 0x1f, 0xd1, 0x5a,
+ 0xfd, 0xc2, 0x8c, 0xa,
+ 0x23, 0x6a, 0x92, 0x6a,
+ 0xa9, 0x9e, 0x76, 0x5,
+ 0x65, 0x47, 0xe, 0xf5,
+ 0x66, 0x6, 0x47, 0xb9,
+ 0xa6, 0x1a, 0x17, 0xa2,
+ 0xe0, 0x39, 0xc, 0xee,
+ 0x59, 0xdd, 0x49, 0x56,
+ 0x9f, 0xd6, 0x60, 0xc3,
+ 0x41, 0xf3, 0x2e, 0xea,
+ 0x91, 0xa4, 0xf0, 0xf7,
+ 0xec, 0xfe, 0xec, 0x53,
+ 0x5, 0x34, 0xc, 0xac,
+ 0x4f, 0x24, 0x4e, 0x2f,
+ 0x5d, 0x5a, 0x1e, 0xb7,
+ 0x38, 0x67, 0xd, 0xd8,
+ 0x3e, 0x6d, 0x9c, 0x7f,
+ 0x61, 0xca, 0x69, 0xf2,
+ 0x6f, 0x59, 0xe9, 0x5c,
+ 0x58, 0xd6, 0xb0, 0x5e,
+ 0xb, 0xbc, 0xa, 0x5a,
+ 0xe0, 0x59, 0x8a, 0x3e,
+ 0xb4, 0xa8, 0xf5, 0xec,
+ 0x10, 0x3, 0xc5, 0x4e,
+ 0x71, 0x61, 0xce, 0xd2,
+ 0x2c, 0x37, 0xc4, 0x9c,
+ 0x91, 0xae, 0xf8, 0xea,
+ 0x85, 0xa8, 0x48, 0x90,
+ 0x65, 0x52, 0xeb, 0x46,
+ 0xac, 0x75, 0x84, 0x60,
+ 0x1e, 0x7a, 0x4d, 0x2f,
+ 0x7d, 0x13, 0x7d, 0xee,
+ 0x74, 0x4c, 0xc0, 0xa1,
+ 0x83, 0x85, 0x3d, 0x15,
+ 0x34, 0x36, 0xff, 0xba,
+ 0xdf, 0x47, 0x4b, 0x44,
+ 0x9a, 0x36, 0x8a, 0x47,
+ 0xac, 0xf, 0xa7, 0xca,
+ 0x89, 0xf5, 0xf9, 0x7,
+ 0x8, 0x77, 0xf5, 0x7d,
+ 0xc3, 0xb6, 0x1f, 0x47,
+ 0x3c, 0x5c, 0x5c, 0x71,
+ 0x93, 0x5c, 0x2b, 0x72,
+ 0xa3, 0x76, 0xb7, 0x3e,
+ 0xac, 0x41, 0x85, 0x58,
+ 0x51, 0x2d, 0x23, 0xdb,
+ 0x22, 0x1c, 0xe2, 0x2b,
+ 0x93, 0xd8, 0xa8, 0x57,
+ 0x8f, 0xc7, 0x9e, 0xcb,
+ 0x24, 0xfb, 0x3c, 0xb7,
+ 0x57, 0x68, 0x2a, 0xfb,
+ 0xde, 0xe1, 0x39, 0x8b,
+ 0x23, 0xbf, 0xe4, 0x74,
+ 0xec, 0x7, 0x4f, 0xf,
+ 0x24, 0x32, 0x3a, 0xb8
+};
+
+char* sndirtroad_msg[2] = {
+ "You travel a bit towards the moon, you think that's the way to go. You"
+ " find a bear in the middle of the road sleeping seemingly in peace. "
+ "The way to the north is blocked by the bear.",
+ "You atravel a bit towards the moon, you KNOW that's the way to go. You"
+ " smell something weired along the way, but you don't know where it is "
+ "coming from. Smells like flesh rotting away..."
+};
+
+char* user_action_req_msgs[3] = {
+ "What are you going to do?"
+};
+
+const char* info_table[] = {
+ "ERROR", // 0
+ "Invalid command!", // 1
+ "You can't use that!", // 2
+ NULL, // 3
+ "You can't go that way!", // 4
+ "YOU MAY ACT NOW!", // 5
+ "There is nothing here..", // 6
+ "it died", // 7
+ "it survived", // 8
+ "a bear blocks the way", // 9
+ "it ran away...", // 10
+ "it won't start", // 11
+ "you can't type", // 12
+ "you unlocked the door" // 13
+};
+
+const char* action_table[NUM_ACTIONS] = {
+ "help",
+ "north",
+ "south",
+ "west",
+ "east",
+ "describe",
+ "use",
+ "inventory",
+ "search",
+ "take",
+};
+
+const char* room_table[] = {
+ "NOTHING",
+ "LONELY ROAD",
+ "S/N DIRT ROAD",
+ "FIREPLACE",
+ "E/W Street",
+ "OLD HOUSE",
+ "LIVING ROOM",
+ "ATTIC",
+ "BASEMENT",
+ "COMPUTER ROOM"
+};
+
+char* room_description_table[sizeof(room_table)/sizeof(const char*)] = {
+ "You stare into a void of nothingness. You see noone, you hear noone,"
+ "you feel someone. You look around, and see nothing, yet "
+ "you are no less scared.",
+ "You are on the dead end of a lonely road. You look right and left of "
+ "you, but you cannot remember why you are here... You are terrified.",
+ NULL,
+ "You find a fireplace in the middle of the woods. A street leads to it "
+ "from the west. The fire in the middle of the place is still burning as"
+ " if someone had left in a hurry...",
+ "You travel down the road. It has no lights, but the moon shines bright"
+ ". The road ends with a house to your left. The houses door mat is in "
+ "the road. Its door is locked.",
+ "You enter the long hallway of the old house. It has doors on all walls"
+ ". The doors look a little weired because they are flat and don't have "
+ "a handle to pull.",
+ "You enter a large room with a few chairs and a tube TV inside it. In "
+ "the center there is a tile table with a vase and flowers on it. The "
+ "flowers are blooming.",
+ "You enter the attic of the house. It has a few books and some filers "
+ "with documents inside it. The filers are glued together. The books too"
+ ". You can't stand up straight.",
+ "You enter the basement. You find some potatoes in a corner and a "
+ "skeleton atop it. ",
+ "You enter a room which looks like you've traveled from an old house "
+ "to the campus of a university. There is a large machine witha sign "
+ "DIGITAL on it. It looks like a computer, though you've never seen one "
+ "in person before..."
+};
+
+bool room_visited_table[sizeof(room_table)/sizeof(const char*)];
+
+uint8_t room_map_table[sizeof(room_table)/sizeof(const char*)]
+ [4] = {
+ /* NORTH, SOUTH, WEST, EAST */
+ {0,0,0,0}, /* 0 nothing */
+ {2,0,0,0}, /* 1 LONELY ROAD */
+ {0,1,0,0}, /* 2 S/N DIRT ROAD */
+ {0,2,4,0}, /* 3 FIREPLACE */
+ {0,0,0,3}, /* 4 E/W STREET */
+ {7,4,9,6}, /* 5 OLD HOUSE */
+ {8,0,5,0}, /* 6 LIVING ROOM */
+ {0,5,0,0}, /* 7 ATTIC */
+ {0,6,0,0}, /* 8 BASEMENT */
+ {0,0,0,5} /* 9 COMPUTERROOM */
+};
+
+const char* item_table[NUM_ITEMS] = {
+ "FLOPPY DISK", /* 0 */
+ "SCREWDRIVER", /* 1 */
+ "KEYBOARD", /* 2 */
+ "SAUSAGE", /* 3 */
+ "FLESH", /* 4 */
+ "KEY", /* 5 */
+ "PISTOL" /* 6 */
+};
+
+bool inventory[sizeof(item_table)/sizeof(const char*)];
+
+
+int8_t item_room_map[NUM_ROOMS] = {
+ -1, /* 0 NOTHING */
+ ITEM_PISTOL, /* 1 LONELY ROAD */
+ ITEM_SAUSAGE, /* 2 S/N DIRT ROAD */
+ -1, /* 3 FIREPLACE */
+ ITEM_KEY, /* 4 E/W STREET*/
+ ITEM_SCREWDRIVER, /* 5 OLD HOUSE */
+ -1, /* 6 LIVING ROOM */
+ ITEM_KEYBOARD, /* 7 ATTIC */
+ ITEM_FLOPPY, /* 8 BASEMENT */
+ -1 /* 9 COMPUTERROOM */
+};
+const struct tone_t * room_track_map[NUM_ROOMS] = {
+ intro_track,
+ lonely_road_track,
+ computer_room_track,
+ lonely_road_track,
+ computer_room_track
+};