Michael Hayes
15 years ago
parent
a0e7c89fb6
commit
3cc1ebee48
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# File: Makefile
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# Author: M. P. Hayes, UCECE
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# Date: 12 Sep 2010
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# Descr: Makefile for space12
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# Definitions.
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CC = avr-gcc
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CFLAGS = -mmcu=atmega32u2 -Os -Wall -Wstrict-prototypes -Wextra -g -I. -I../../drivers/avr -I../../extra -I../../utils -I../../fonts -I../../drivers
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OBJCOPY = avr-objcopy
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SIZE = avr-size
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DEL = rm
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# Default target.
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all: space12.out
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# Compile: create object files from C source files.
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space12.o: space12.c ../../drivers/avr/eeprom.h ../../drivers/avr/pio.h ../../drivers/avr/system.h ../../drivers/avr/timer.h ../../drivers/display.h ../../drivers/led.h ../../drivers/navswitch.h ../../extra/mmelody.h ../../extra/squeaker.h ../../extra/ticker.h ../../extra/tweeter.h ../../fonts/font3x5_1.h ../../utils/font.h ../../utils/task.h ../../utils/tinygl.h ../../utils/uint8toa.h flasher.h spacey.h
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$(CC) -c $(CFLAGS) $< -o $@
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flasher.o: flasher.c ../../drivers/avr/system.h flasher.h
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$(CC) -c $(CFLAGS) $< -o $@
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spacey.o: spacey.c ../../drivers/avr/system.h spacey.h
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$(CC) -c $(CFLAGS) $< -o $@
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eeprom.o: ../../drivers/avr/eeprom.c ../../drivers/avr/eeprom.h ../../drivers/avr/system.h
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$(CC) -c $(CFLAGS) $< -o $@
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pio.o: ../../drivers/avr/pio.c ../../drivers/avr/pio.h ../../drivers/avr/system.h
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$(CC) -c $(CFLAGS) $< -o $@
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system.o: ../../drivers/avr/system.c ../../drivers/avr/system.h
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$(CC) -c $(CFLAGS) $< -o $@
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timer.o: ../../drivers/avr/timer.c ../../drivers/avr/system.h ../../drivers/avr/timer.h
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$(CC) -c $(CFLAGS) $< -o $@
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display.o: ../../drivers/display.c ../../drivers/avr/system.h ../../drivers/display.h ../../drivers/ledmat.h
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$(CC) -c $(CFLAGS) $< -o $@
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led.o: ../../drivers/led.c ../../drivers/avr/pio.h ../../drivers/avr/system.h ../../drivers/led.h
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$(CC) -c $(CFLAGS) $< -o $@
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ledmat.o: ../../drivers/ledmat.c ../../drivers/avr/pio.h ../../drivers/avr/system.h ../../drivers/ledmat.h
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$(CC) -c $(CFLAGS) $< -o $@
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navswitch.o: ../../drivers/navswitch.c ../../drivers/avr/delay.h ../../drivers/avr/pio.h ../../drivers/avr/system.h ../../drivers/navswitch.h
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$(CC) -c $(CFLAGS) $< -o $@
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mmelody.o: ../../extra/mmelody.c ../../drivers/avr/system.h ../../extra/mmelody.h ../../extra/ticker.h
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$(CC) -c $(CFLAGS) $< -o $@
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squeaker.o: ../../extra/squeaker.c ../../drivers/avr/system.h ../../extra/squeaker.h ../../extra/ticker.h
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$(CC) -c $(CFLAGS) $< -o $@
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ticker.o: ../../extra/ticker.c
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$(CC) -c $(CFLAGS) $< -o $@
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tweeter.o: ../../extra/tweeter.c ../../drivers/avr/system.h ../../extra/ticker.h ../../extra/tweeter.h
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$(CC) -c $(CFLAGS) $< -o $@
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task.o: ../../utils/task.c ../../drivers/avr/system.h ../../drivers/avr/timer.h ../../utils/task.h
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$(CC) -c $(CFLAGS) $< -o $@
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tinygl.o: ../../utils/tinygl.c ../../drivers/avr/system.h ../../drivers/display.h ../../utils/font.h ../../utils/tinygl.h
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$(CC) -c $(CFLAGS) $< -o $@
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uint8toa.o: ../../utils/uint8toa.c ../../drivers/avr/system.h
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$(CC) -c $(CFLAGS) $< -o $@
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# Link: create ELF output file from object files.
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space12.out: space12.o flasher.o spacey.o eeprom.o pio.o system.o timer.o display.o led.o ledmat.o navswitch.o mmelody.o squeaker.o ticker.o tweeter.o task.o tinygl.o uint8toa.o
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$(CC) $(CFLAGS) $^ -o $@ -lm
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$(SIZE) $@
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# Target: clean project.
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.PHONY: clean
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clean:
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-$(DEL) *.o *.out *.hex
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# Target: program project.
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.PHONY: program
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program: space12.out
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$(OBJCOPY) -O ihex space12.out space12.hex
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dfu-programmer atmega32u2 erase; dfu-programmer atmega32u2 flash space12.hex; dfu-programmer atmega32u2 start
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@ -0,0 +1,88 @@
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# File: Makefile
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# Author: M. P. Hayes, UCECE
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# Date: 11 Sep 2010
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# Descr: Makefile for space12
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CC = gcc
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CFLAGS = -Wall -Wstrict-prototypes -Wextra -g -I. -I../../drivers/test -I../../extra -I../../utils -I../../fonts -I../../drivers
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DEL = rm
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# Default target.
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all: space12
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# Compile: create object files from C source files.
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space12-test.o: space12.c ../../drivers/display.h ../../drivers/led.h ../../drivers/navswitch.h ../../drivers/test/avrtest.h ../../drivers/test/eeprom.h ../../drivers/test/pio.h ../../drivers/test/system.h ../../drivers/test/timer.h ../../extra/mmelody.h ../../extra/squeaker.h ../../extra/ticker.h ../../extra/tweeter.h ../../fonts/font3x5_1.h ../../utils/font.h ../../utils/task.h ../../utils/tinygl.h ../../utils/uint8toa.h flasher.h spacey.h
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$(CC) -c $(CFLAGS) $< -o $@
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flasher-test.o: flasher.c ../../drivers/test/system.h flasher.h
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$(CC) -c $(CFLAGS) $< -o $@
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spacey-test.o: spacey.c ../../drivers/test/system.h spacey.h
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$(CC) -c $(CFLAGS) $< -o $@
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display-test.o: ../../drivers/display.c ../../drivers/display.h ../../drivers/ledmat.h ../../drivers/test/system.h
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$(CC) -c $(CFLAGS) $< -o $@
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led-test.o: ../../drivers/led.c ../../drivers/led.h ../../drivers/test/avrtest.h ../../drivers/test/pio.h ../../drivers/test/system.h
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$(CC) -c $(CFLAGS) $< -o $@
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ledmat-test.o: ../../drivers/ledmat.c ../../drivers/ledmat.h ../../drivers/test/avrtest.h ../../drivers/test/pio.h ../../drivers/test/system.h
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$(CC) -c $(CFLAGS) $< -o $@
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navswitch-test.o: ../../drivers/navswitch.c ../../drivers/navswitch.h ../../drivers/test/avrtest.h ../../drivers/test/delay.h ../../drivers/test/pio.h ../../drivers/test/system.h
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$(CC) -c $(CFLAGS) $< -o $@
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eeprom-test.o: ../../drivers/test/eeprom.c ../../drivers/test/eeprom.h ../../drivers/test/system.h
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$(CC) -c $(CFLAGS) $< -o $@
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mgetkey-test.o: ../../drivers/test/mgetkey.c ../../drivers/test/mgetkey.h
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$(CC) -c $(CFLAGS) $< -o $@
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pio-test.o: ../../drivers/test/pio.c
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$(CC) -c $(CFLAGS) $< -o $@
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system-test.o: ../../drivers/test/system.c ../../drivers/test/avrtest.h ../../drivers/test/mgetkey.h ../../drivers/test/pio.h ../../drivers/test/system.h
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$(CC) -c $(CFLAGS) $< -o $@
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timer-test.o: ../../drivers/test/timer.c ../../drivers/test/system.h ../../drivers/test/timer.h
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$(CC) -c $(CFLAGS) $< -o $@
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mmelody-test.o: ../../extra/mmelody.c ../../drivers/test/system.h ../../extra/mmelody.h ../../extra/ticker.h
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$(CC) -c $(CFLAGS) $< -o $@
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squeaker-test.o: ../../extra/squeaker.c ../../drivers/test/system.h ../../extra/squeaker.h ../../extra/ticker.h
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$(CC) -c $(CFLAGS) $< -o $@
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ticker-test.o: ../../extra/ticker.c
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$(CC) -c $(CFLAGS) $< -o $@
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tweeter-test.o: ../../extra/tweeter.c ../../drivers/test/system.h ../../extra/ticker.h ../../extra/tweeter.h
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$(CC) -c $(CFLAGS) $< -o $@
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task-test.o: ../../utils/task.c ../../drivers/test/system.h ../../drivers/test/timer.h ../../utils/task.h
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$(CC) -c $(CFLAGS) $< -o $@
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tinygl-test.o: ../../utils/tinygl.c ../../drivers/display.h ../../drivers/test/system.h ../../utils/font.h ../../utils/tinygl.h
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$(CC) -c $(CFLAGS) $< -o $@
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uint8toa-test.o: ../../utils/uint8toa.c ../../drivers/test/system.h
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$(CC) -c $(CFLAGS) $< -o $@
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# Link: create executable file from object files.
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space12: space12-test.o flasher-test.o spacey-test.o display-test.o led-test.o ledmat-test.o navswitch-test.o eeprom-test.o mgetkey-test.o pio-test.o system-test.o timer-test.o mmelody-test.o squeaker-test.o ticker-test.o tweeter-test.o task-test.o tinygl-test.o uint8toa-test.o
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$(CC) $(CFLAGS) $^ -o $@ -lrt
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# Clean: delete derived files.
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.PHONY: clean
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clean:
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-$(DEL) space12 space12-test.o flasher-test.o spacey-test.o display-test.o led-test.o ledmat-test.o navswitch-test.o eeprom-test.o mgetkey-test.o pio-test.o system-test.o timer-test.o mmelody-test.o squeaker-test.o ticker-test.o tweeter-test.o task-test.o tinygl-test.o uint8toa-test.o
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@ -0,0 +1,42 @@
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# File: Makefile
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# Author: M. P. Hayes, UCECE
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# Date: 11 Sep 2010
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# Descr: Makefile for space12 docs
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DEL = rm
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all: file_dependencies.pdf module_dependencies.pdf makefile_dependencies.pdf build_dependencies.pdf callgraph.pdf
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file_dependencies.pdf: files.d
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../../../etc/graphdeps.py $< --out $@
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module_dependencies.pdf: modules.d
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../../../etc/graphdeps.py $< --modules --out $@
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makefile_dependencies.pdf: ../Makefile
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../../../etc/graphdeps.py $< --out $@
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build_dependencies.pdf: ../Makefile
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../../../etc/graphdeps.py $< --out $@ --showops
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callgraph.pdf: callgraph.d
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../../../etc/graphdeps.py --calls --modules $< --out $@ --showops
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files.d: ../Makefile
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(cd ..; ../../etc/makemake.py --relpath --files . . ../../drivers ../../drivers/avr ../../utils ../../extra --exclude system.h > doc/files.d)
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modules.d: ../Makefile
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(cd ..; ../../etc/makemake.py --relpath --modules . . ../../drivers ../../drivers/avr ../../utils ../../extra --exclude system > doc/modules.d)
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callgraph.d: ../Makefile
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(cd ..; ../../etc/makemake.py --cc="avr-gcc" --cflags="-Os -mmcu=atmega32u2" --relpath --calls . . ../../drivers ../../drivers/avr ../../utils ../../extra --exclude system.h > doc/callgraph.d)
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# Clean: delete derived files.
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.PHONY: clean
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clean:
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-$(DEL) *.d *.pdf
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@ -0,0 +1,16 @@
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Running make in this directory will generate a number of PDF graphs.
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In the callgraph, the arrows means "calls". In the dependency graphs,
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the arrows means "requires" (or "depends upon").
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callgraph.pdf This shows the callgraph, i.e., what functions each
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function in the program calls.
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module_dependencies.pdf This shows the dependencies between the modules.
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file_dependencies.pdf This shows the dependencies between the files.
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makefile_dependencies.pdf This shows the dependencies required by make when
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building the program.
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build_dependencies.pdf This is like makefile_dependencies.pdf but shows
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the operations performed to generate the new file.
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callgraph.d This shows the callgraph in text format.
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files.d This shows the file dependencies in text format.
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modules.d This shows the module dependencies in text format.
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@ -0,0 +1,100 @@
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/** @file flasher.c
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@author M. P. Hayes, UCECE
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@date 13 March 2005
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@brief
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*/
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#include "flasher.h"
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/* These routines are for flashing a LED or beeping a piezo tweeter.
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Perhaps they should be separated into software PWM and flash
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pattern sequencing. */
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int8_t
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flasher_pattern_set (flasher_t flasher, flasher_pattern_t *pattern)
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{
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flasher->pattern = pattern;
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flasher->mod_count = 0;
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flasher->flasher_count = 0;
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flasher->flashes_count = 0;
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flasher->flasher_prescale = 0;
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return 1;
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}
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flasher_pattern_t *
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flasher_pattern_get (flasher_t flasher)
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{
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return flasher->pattern;
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}
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/* FIXME. */
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int8_t
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flasher_phase_set (flasher_t flasher, uint8_t phase)
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{
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flasher->mod_count = 0;
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flasher->flasher_count = 0;
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flasher->flashes_count = phase;
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return 1;
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}
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/* Return the next state for the associated device. For example,
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to control the flashing of a LED use:
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led_set (led, flasher_update (flasher)); */
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bool
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flasher_update (flasher_t flasher)
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{
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if (!flasher->pattern)
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return 0;
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flasher->mod_count++;
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if (flasher->mod_count >= flasher->pattern->mod_period)
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{
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flasher->mod_count = 0;
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flasher->flasher_prescale++;
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if (flasher->flasher_prescale >= FLASHER_PRESCALE)
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{
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flasher->flasher_prescale = 0;
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flasher->flasher_count++;
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if (flasher->flasher_count >= flasher->pattern->flasher_period)
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{
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flasher->flasher_count = 0;
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flasher->flashes_count++;
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if (!flasher->pattern->period)
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{
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/* One shot mode. */
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if (flasher->flashes_count >= flasher->pattern->flashes)
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{
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/* Disable pattern. */
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flasher->pattern = 0;
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return 1;
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}
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}
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else if (flasher->flashes_count >= flasher->pattern->period)
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{
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flasher->flashes_count = 0;
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}
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}
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}
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}
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return flasher->mod_count < flasher->pattern->mod_duty
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&& flasher->flasher_count < flasher->pattern->flasher_duty
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&& flasher->flashes_count < flasher->pattern->flashes;
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}
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/* Create a new flasher device. */
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flasher_t
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flasher_init (flasher_obj_t *flasher)
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{
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flasher_pattern_set (flasher, 0);
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return flasher;
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}
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@ -0,0 +1,97 @@
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/** @file flasher.h
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@author M. P. Hayes, UCECE
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@date 13 March 2005
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@brief Combined software PWM and flashing module. Use at your peril!
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*/
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#ifndef FLASHER_H
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#define FLASHER_H
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#include "system.h"
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/* This parameter is for internal use only. It's purpose is to
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reduce the chances of flasher_period and flasher_duty overflow.
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It could possibly be made an additional parameter for flasher_pattern_t
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and calculated by FLASHER_PATTERN. */
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#define FLASHER_PRESCALE 8
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/* POLL_RATE (Hz)
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MOD_FREQ (Hz)
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MOD_DUTY (percent)
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FLASHER_PERIOD (s) - period between flashes
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FLASHER_DUTY (percent) - proportion of flash period that is lit
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FLASHES (integer) - how many flashes per flash pattern
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PERIOD (s) - how often the flash pattern repeats
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*/
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#define FLASHER_PATTERN(POLL_RATE, MOD_FREQ, MOD_DUTY, FLASHER_PERIOD, \
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FLASHER_DUTY, FLASHES, PERIOD) \
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(POLL_RATE) / (double)(MOD_FREQ) + 0.5, \
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(POLL_RATE) * (double)(MOD_DUTY) / (MOD_FREQ) / 100.0 + 0.5, \
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(MOD_FREQ) * (FLASHER_PERIOD) / (double)FLASHER_PRESCALE + 0.5, \
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(MOD_FREQ) * (FLASHER_PERIOD) * (FLASHER_DUTY) / 100.0 / FLASHER_PRESCALE + 0.5, \
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(FLASHES), \
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(PERIOD) / (double)(FLASHER_PERIOD) + 0.5
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typedef struct
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{
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/* This is the modulation period. It determines the frequency
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of a tone or flicker rate of a LED. */
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uint8_t mod_period;
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/* This is the modulation duty. It determines the luminance of a LED. */
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uint8_t mod_duty;
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/* This is the period between the start of two flashes in a sequence. */
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uint8_t flasher_period;
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/* This is the flash period. */
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uint8_t flasher_duty;
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/* This is the number of flashes in the sequence. */
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uint8_t flashes;
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/* This is the number of flasher periods before the sequence repeats. */
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uint8_t period;
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} flasher_pattern_t;
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#define FLASHER_ACTIVE_P(FLASHER) \
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(((flasher_obj_t *)(FLASHER))->pattern != 0)
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#define FLASHER_PATTERN_FLASHES_SET(PATTERN, FLASHES) \
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(PATTERN)->flashes = (FLASHES)
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/* This structure is defined here so the compiler can allocate enough
|
||||
memory for it. However, its fields should be treated as
|
||||
private. */
|
||||
typedef struct
|
||||
{
|
||||
flasher_pattern_t *pattern;
|
||||
uint8_t mod_count;
|
||||
uint8_t flasher_count;
|
||||
uint8_t flashes_count;
|
||||
uint8_t flasher_prescale;
|
||||
} flasher_private_t;
|
||||
|
||||
|
||||
typedef flasher_private_t flasher_obj_t;
|
||||
typedef flasher_obj_t *flasher_t;
|
||||
|
||||
|
||||
extern int8_t
|
||||
flasher_pattern_set (flasher_t flasher, flasher_pattern_t *pattern);
|
||||
|
||||
extern flasher_pattern_t *
|
||||
flasher_pattern_get (flasher_t flasher);
|
||||
|
||||
extern int8_t
|
||||
flasher_phase_set (flasher_t flasher, uint8_t phase);
|
||||
|
||||
extern bool
|
||||
flasher_update (flasher_t);
|
||||
|
||||
|
||||
/* INFO is a pointer into RAM that stores the state of the FLASH.
|
||||
CFG is a pointer into ROM to define the port the FLASH is connected to.
|
||||
The returned handle is passed to the other flasher_xxx routines to denote
|
||||
the FLASH to operate on. */
|
||||
extern flasher_t
|
||||
flasher_init (flasher_obj_t *info);
|
||||
#endif
|
||||
@ -0,0 +1 @@
|
||||
"*16<G///>3<D#//A#G///>2 ///D+///D+///D+///D#+//A#F#///D#//A#G/// ///"
|
||||
@ -0,0 +1,525 @@
|
||||
/** @file space12.c
|
||||
@author M. P. Hayes, UCECE
|
||||
@date 20 April 2007
|
||||
@brief A simple space invaders game with different difficulty levels.
|
||||
|
||||
@defgroup space12 A simple space invaders game.
|
||||
*/
|
||||
|
||||
#include <string.h>
|
||||
#include "system.h"
|
||||
#include "display.h"
|
||||
#include "tinygl.h"
|
||||
#include "task.h"
|
||||
#include "navswitch.h"
|
||||
#include "led.h"
|
||||
#include "flasher.h"
|
||||
#include "spacey.h"
|
||||
#include "eeprom.h"
|
||||
#include "uint8toa.h"
|
||||
#include "../fonts/font3x5_1.h"
|
||||
#include "tweeter.h"
|
||||
#include "squeaker.h"
|
||||
#include "mmelody.h"
|
||||
#include "pio.h"
|
||||
|
||||
|
||||
#define VERSION "1.6"
|
||||
|
||||
/** Define polling rates in Hz. The tweeter task needs to be the highest
|
||||
priority since any jitter will make the sound awful. */
|
||||
enum {TWEETER_TASK_RATE = 20000};
|
||||
enum {DISPLAY_TASK_RATE = 300};
|
||||
enum {TUNE_TASK_RATE = 100};
|
||||
enum {BUTTON_TASK_RATE = 20};
|
||||
enum {GAME_TASK_RATE = 100};
|
||||
|
||||
enum {FLASHER_UPDATE_RATE = 500};
|
||||
enum {TUNE_BPM_RATE = 200};
|
||||
enum {GAME_OVER_PERIOD = 2};
|
||||
enum {BUTTON_HOLD_PERIOD = 1};
|
||||
|
||||
|
||||
/* Connect piezo tweeter to outermost pins of UCFK4 P1 connector. */
|
||||
#define PIEZO_PIO PIO_DEFINE (PORT_D, 6)
|
||||
|
||||
|
||||
/** Define flasher modes. */
|
||||
static flasher_pattern_t flasher_patterns[] =
|
||||
{
|
||||
/** TASK_RATE, MOD_FREQ, MOD_DUTY, FLASHER_PERIOD,
|
||||
FLASHER_DUTY, FLASHES, PERIOD. */
|
||||
{FLASHER_PATTERN (FLASHER_UPDATE_RATE, 100, 100, 0.4, 100, 1, 0.4)},
|
||||
{FLASHER_PATTERN (FLASHER_UPDATE_RATE, 100, 100, 0.4, 100, 1, 0.4)},
|
||||
{FLASHER_PATTERN (FLASHER_UPDATE_RATE, 200, 100, 0.1, 50, 1, 0.1)},
|
||||
};
|
||||
|
||||
typedef enum {FLASH_MODE_GUN, FLASH_MODE_SHELL,
|
||||
FLASH_MODE_ALIEN, FLASH_MODE_NUM} flash_mode_t;
|
||||
|
||||
|
||||
typedef enum {STATE_DUMMY, STATE_INIT, STATE_START,
|
||||
STATE_PLAYING, STATE_OVER,
|
||||
STATE_READY, STATE_MENU_LEVEL} state_t;
|
||||
|
||||
enum {GAME_LEVEL_MAX = 5};
|
||||
|
||||
|
||||
typedef struct
|
||||
{
|
||||
uint8_t level;
|
||||
uint8_t games;
|
||||
} game_data_t;
|
||||
|
||||
|
||||
static state_t state = STATE_INIT;
|
||||
static game_data_t game_data;
|
||||
static uint8_t display[TINYGL_WIDTH * TINYGL_HEIGHT];
|
||||
|
||||
static tweeter_scale_t scale_table[] = TWEETER_SCALE_TABLE (TWEETER_TASK_RATE);
|
||||
static tweeter_t tweeter;
|
||||
static mmelody_t melody;
|
||||
static mmelody_obj_t melody_info;
|
||||
static tweeter_obj_t tweeter_info;
|
||||
|
||||
|
||||
static const char game_intro_tune[] =
|
||||
{
|
||||
#include "temple_of_love.mmel"
|
||||
"> "
|
||||
};
|
||||
|
||||
|
||||
static const char game_over_tune[] =
|
||||
{
|
||||
#include "imperial_march.mmel"
|
||||
" >"
|
||||
};
|
||||
|
||||
|
||||
static void tweeter_task_init (void)
|
||||
{
|
||||
tweeter = tweeter_init (&tweeter_info, TWEETER_TASK_RATE, scale_table);
|
||||
|
||||
pio_config_set (PIEZO_PIO, PIO_OUTPUT_LOW);
|
||||
}
|
||||
|
||||
|
||||
static void tweeter_task (__unused__ void *data)
|
||||
{
|
||||
pio_output_set (PIEZO_PIO, tweeter_update (tweeter));
|
||||
}
|
||||
|
||||
|
||||
static void tune_task_init (void)
|
||||
{
|
||||
melody = mmelody_init (&melody_info, TUNE_TASK_RATE,
|
||||
(mmelody_callback_t) tweeter_note_play, tweeter);
|
||||
|
||||
mmelody_speed_set (melody, TUNE_BPM_RATE);
|
||||
}
|
||||
|
||||
|
||||
static void tune_task (__unused__ void *data)
|
||||
{
|
||||
mmelody_update (melody);
|
||||
}
|
||||
|
||||
|
||||
/** Draw pixel on display. */
|
||||
static void
|
||||
display_handler (void *data, uint8_t col, uint8_t row, spacey_pix_t type)
|
||||
{
|
||||
uint8_t *display = data;
|
||||
uint8_t pixel;
|
||||
|
||||
pixel = row * TINYGL_WIDTH + col;
|
||||
display[pixel] = type;
|
||||
}
|
||||
|
||||
|
||||
/** Display the game over message. */
|
||||
static void
|
||||
game_over_display (char *buffer)
|
||||
{
|
||||
char *str = buffer;
|
||||
|
||||
strcpy (str, "GAME OVER ");
|
||||
while (*str)
|
||||
str++;
|
||||
uint8toa (spacey_aliens_killed_get (), str, 0);
|
||||
while (*str)
|
||||
str++;
|
||||
*str++ = '/';
|
||||
uint8toa (spacey_shells_fired_get (), str, 0);
|
||||
tinygl_clear ();
|
||||
tinygl_text (buffer);
|
||||
}
|
||||
|
||||
|
||||
static void
|
||||
game_text_display (uint8_t num, char *buffer, char *msg)
|
||||
{
|
||||
char *str = buffer;
|
||||
|
||||
while (*msg)
|
||||
*str++ = *msg++;
|
||||
uint8toa (num, str, 0);
|
||||
tinygl_clear ();
|
||||
tinygl_text (buffer);
|
||||
}
|
||||
|
||||
|
||||
/** Display the game level of difficulty. */
|
||||
static void
|
||||
game_level_display (uint8_t level, char *buffer)
|
||||
{
|
||||
game_text_display (level, buffer, "L");
|
||||
}
|
||||
|
||||
|
||||
/** Set the game level of difficulty. */
|
||||
static void
|
||||
game_level_set (uint8_t level)
|
||||
{
|
||||
spacey_options_t options;
|
||||
uint8_t alien_num = 3;
|
||||
uint8_t alien_steps = 4;
|
||||
|
||||
switch (level)
|
||||
{
|
||||
default:
|
||||
case 0:
|
||||
options.aliens_wrap = 0;
|
||||
options.aliens_evasive = 0;
|
||||
break;
|
||||
|
||||
case 1:
|
||||
options.aliens_wrap = 0;
|
||||
options.aliens_evasive = 1;
|
||||
alien_steps = 3;
|
||||
break;
|
||||
|
||||
case 2:
|
||||
options.aliens_wrap = 1;
|
||||
options.aliens_evasive = 0;
|
||||
alien_steps = 3;
|
||||
break;
|
||||
|
||||
case 3:
|
||||
options.aliens_wrap = 1;
|
||||
options.aliens_evasive = 1;
|
||||
alien_steps = 3;
|
||||
break;
|
||||
|
||||
case 4:
|
||||
options.aliens_wrap = 1;
|
||||
options.aliens_evasive = 1;
|
||||
alien_steps = 3;
|
||||
alien_num = 4;
|
||||
break;
|
||||
|
||||
case 5:
|
||||
options.aliens_wrap = 1;
|
||||
options.aliens_evasive = 1;
|
||||
alien_steps = 2;
|
||||
alien_num = 4;
|
||||
break;
|
||||
}
|
||||
|
||||
spacey_alien_num_set (alien_num);
|
||||
spacey_alien_create_steps_set (alien_steps);
|
||||
spacey_options_set (options);
|
||||
}
|
||||
|
||||
|
||||
static void
|
||||
game_start (game_data_t *data)
|
||||
{
|
||||
tinygl_clear ();
|
||||
data->games++;
|
||||
game_level_set (data->level);
|
||||
spacey_start ();
|
||||
eeprom_write (0, data, sizeof (*data));
|
||||
/* Stop infuriating tune. */
|
||||
mmelody_play (melody, "");
|
||||
}
|
||||
|
||||
|
||||
static void game_event (__unused__ void *data, spacey_event_t event)
|
||||
{
|
||||
switch (event)
|
||||
{
|
||||
case SPACEY_EVENT_ALIEN_HIT:
|
||||
mmelody_play (melody, "C+");
|
||||
break;
|
||||
|
||||
case SPACEY_EVENT_ALIEN_LANDED:
|
||||
mmelody_play (melody, "C");
|
||||
break;
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
|
||||
static void game_task (__unused__ void *data)
|
||||
{
|
||||
static bool init = 0;
|
||||
static uint8_t game_over_ticks;
|
||||
char message[44];
|
||||
|
||||
if (!init)
|
||||
{
|
||||
led_init ();
|
||||
|
||||
led_set (LED1, 1);
|
||||
|
||||
/* When the EEPROM is erased all the bytes are 0xFF so set to
|
||||
sensible defaults. */
|
||||
eeprom_read (0, &game_data, sizeof (game_data));
|
||||
if (game_data.level == 0xff)
|
||||
{
|
||||
game_data.level = 0;
|
||||
game_data.games = 0;
|
||||
}
|
||||
|
||||
spacey_init (GAME_TASK_RATE, TINYGL_WIDTH, TINYGL_HEIGHT,
|
||||
display_handler, display);
|
||||
|
||||
spacey_event_handler_set (game_event, 0);
|
||||
|
||||
init = 1;
|
||||
}
|
||||
|
||||
switch (state)
|
||||
{
|
||||
case STATE_PLAYING:
|
||||
if (! spacey_update ())
|
||||
{
|
||||
game_over_display (message);
|
||||
mmelody_play (melody, game_over_tune);
|
||||
game_over_ticks = 0;
|
||||
led_set (LED1, 1);
|
||||
state = STATE_OVER;
|
||||
}
|
||||
break;
|
||||
|
||||
case STATE_INIT:
|
||||
tinygl_text ("SPACEY READY V" VERSION " BY MPH ");
|
||||
mmelody_play (melody, game_intro_tune);
|
||||
state = STATE_READY;
|
||||
break;
|
||||
|
||||
case STATE_OVER:
|
||||
game_over_ticks ++;
|
||||
if (game_over_ticks >= GAME_TASK_RATE * GAME_OVER_PERIOD)
|
||||
state = STATE_READY;
|
||||
/* Fall through. */
|
||||
|
||||
case STATE_READY:
|
||||
case STATE_MENU_LEVEL:
|
||||
default:
|
||||
break;
|
||||
|
||||
case STATE_START:
|
||||
/* Turn that bloody blimey space invader off... */
|
||||
game_start (&game_data);
|
||||
led_set (LED1, 0);
|
||||
state = STATE_PLAYING;
|
||||
break;
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
|
||||
static void display_task (__unused__ void *data)
|
||||
{
|
||||
static bool init = 0;
|
||||
static flasher_t flashers[SPACEY_PIX_TYPE_NUM];
|
||||
static uint8_t flasher_state[SPACEY_PIX_TYPE_NUM];
|
||||
static flasher_obj_t flashers_info[SPACEY_PIX_TYPE_NUM];
|
||||
|
||||
if (!init)
|
||||
{
|
||||
uint8_t i;
|
||||
|
||||
tinygl_init (DISPLAY_TASK_RATE);
|
||||
tinygl_font_set (&font3x5_1);
|
||||
tinygl_text_mode_set (TINYGL_TEXT_MODE_SCROLL_LEFT);
|
||||
tinygl_text_mode_set (TINYGL_TEXT_MODE_ROTATE_SCROLL_DOWN);
|
||||
tinygl_text_speed_set (10);
|
||||
|
||||
for (i = 0; i < ARRAY_SIZE (flashers); i++)
|
||||
{
|
||||
flashers[i] = flasher_init (&flashers_info[i]);
|
||||
flasher_state[i] = 0;
|
||||
}
|
||||
|
||||
for (i = 0; i < ARRAY_SIZE (display); i++)
|
||||
display[i] = 0;
|
||||
|
||||
/* Set up flash patterns for different pixel types. */
|
||||
flasher_pattern_set (flashers[SPACEY_PIX_GUN],
|
||||
&flasher_patterns[FLASH_MODE_GUN]);
|
||||
flasher_pattern_set (flashers[SPACEY_PIX_SHELL],
|
||||
&flasher_patterns[FLASH_MODE_SHELL]);
|
||||
flasher_pattern_set (flashers[SPACEY_PIX_ALIEN],
|
||||
&flasher_patterns[FLASH_MODE_ALIEN]);
|
||||
|
||||
init = 1;
|
||||
}
|
||||
|
||||
if (state == STATE_PLAYING)
|
||||
{
|
||||
uint8_t *src;
|
||||
uint8_t i;
|
||||
uint8_t j;
|
||||
|
||||
/* Update flasher states. NB, the first flasher is always off. */
|
||||
for (i = 1; i < ARRAY_SIZE (flashers); i++)
|
||||
flasher_state[i] = flasher_update (flashers[i]);
|
||||
|
||||
/* Update display. */
|
||||
src = display;
|
||||
for (j = 0; j < TINYGL_HEIGHT; j++)
|
||||
for (i = 0; i < TINYGL_WIDTH; i++)
|
||||
{
|
||||
tinygl_point_t point = {i, j};
|
||||
|
||||
tinygl_draw_point (point, flasher_state[*src++]);
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
/* Advance messages and refresh display. */
|
||||
tinygl_update ();
|
||||
}
|
||||
|
||||
|
||||
|
||||
static void navswitch_task (__unused__ void *data)
|
||||
{
|
||||
static bool init = 0;
|
||||
char message[44];
|
||||
|
||||
if (!init)
|
||||
{
|
||||
navswitch_init ();
|
||||
init = 1;
|
||||
}
|
||||
|
||||
navswitch_update ();
|
||||
|
||||
if (navswitch_push_event_p (NAVSWITCH_EAST))
|
||||
{
|
||||
switch (state)
|
||||
{
|
||||
case STATE_READY:
|
||||
break;
|
||||
|
||||
case STATE_MENU_LEVEL:
|
||||
if (game_data.level < GAME_LEVEL_MAX - 1)
|
||||
game_data.level++;
|
||||
game_level_display (game_data.level, message);
|
||||
break;
|
||||
|
||||
case STATE_PLAYING:
|
||||
spacey_gun_move_right ();
|
||||
break;
|
||||
|
||||
default:
|
||||
break;
|
||||
}
|
||||
}
|
||||
|
||||
if (navswitch_push_event_p (NAVSWITCH_WEST))
|
||||
{
|
||||
switch (state)
|
||||
{
|
||||
case STATE_READY:
|
||||
break;
|
||||
|
||||
case STATE_MENU_LEVEL:
|
||||
if (game_data.level > 1)
|
||||
game_data.level--;
|
||||
game_level_display (game_data.level, message);
|
||||
break;
|
||||
|
||||
case STATE_PLAYING:
|
||||
spacey_gun_move_left ();
|
||||
break;
|
||||
|
||||
default:
|
||||
break;
|
||||
}
|
||||
}
|
||||
|
||||
if (navswitch_push_event_p (NAVSWITCH_WEST))
|
||||
{
|
||||
switch (state)
|
||||
{
|
||||
case STATE_READY:
|
||||
state = STATE_MENU_LEVEL;
|
||||
game_level_display (game_data.level, message);
|
||||
break;
|
||||
|
||||
case STATE_MENU_LEVEL:
|
||||
break;
|
||||
|
||||
case STATE_PLAYING:
|
||||
break;
|
||||
|
||||
default:
|
||||
break;
|
||||
}
|
||||
}
|
||||
|
||||
if (navswitch_push_event_p (NAVSWITCH_PUSH))
|
||||
{
|
||||
switch (state)
|
||||
{
|
||||
case STATE_READY:
|
||||
state = STATE_START;
|
||||
break;
|
||||
|
||||
case STATE_PLAYING:
|
||||
spacey_gun_fire ();
|
||||
break;
|
||||
|
||||
case STATE_MENU_LEVEL:
|
||||
state = STATE_READY;
|
||||
break;
|
||||
|
||||
default:
|
||||
break;
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
int
|
||||
main (void)
|
||||
{
|
||||
task_t tasks[] =
|
||||
{
|
||||
{.func = tweeter_task, .period = TASK_RATE / TWEETER_TASK_RATE,
|
||||
.data = 0},
|
||||
{.func = tune_task, .period = TASK_RATE / TUNE_TASK_RATE,
|
||||
.data = 0},
|
||||
{.func = display_task, .period = TASK_RATE / DISPLAY_TASK_RATE,
|
||||
.data = 0},
|
||||
{.func = navswitch_task, .period = TASK_RATE / BUTTON_TASK_RATE,
|
||||
.data = 0},
|
||||
{.func = game_task, .period = TASK_RATE / GAME_TASK_RATE,
|
||||
.data = 0},
|
||||
};
|
||||
|
||||
|
||||
system_init ();
|
||||
|
||||
tweeter_task_init ();
|
||||
tune_task_init ();
|
||||
|
||||
task_schedule (tasks, ARRAY_SIZE (tasks));
|
||||
return 0;
|
||||
}
|
||||
@ -0,0 +1,578 @@
|
||||
/** @file spacey.c
|
||||
@author M. P. Hayes, UCECE
|
||||
@date 13 March 2007
|
||||
@brief This implements a simple space invaders game.
|
||||
*/
|
||||
|
||||
#include <stdlib.h>
|
||||
#include "spacey.h"
|
||||
|
||||
/* This function implements a simple space invades program. Aliens
|
||||
randomly appear on the top row of the display and work their way
|
||||
randomly down the display. The game ends when 5 aliens have
|
||||
reached the bottom of the display. To kill the aliens, shells can
|
||||
be fired at them from a gun on the bottom of the display. The gun
|
||||
can only move across the bottom and when it gets to the side it
|
||||
wraps around to the other side.
|
||||
|
||||
The aliens could move at different speeds but currently they are
|
||||
set at the same speed to keep things simple.
|
||||
*/
|
||||
|
||||
|
||||
#ifndef DISPLAY_INTERLACE
|
||||
#define DISPLAY_INTERLACE 0
|
||||
#endif
|
||||
|
||||
|
||||
#if DISPLAY_INTERLACE
|
||||
/* With an interlaced display we do not have odd numbered rows and
|
||||
columns. */
|
||||
enum {SPACEY_SHELL_INC = 2, SPACEY_GUN_INC = 2};
|
||||
#else
|
||||
enum {SPACEY_SHELL_INC = 1, SPACEY_GUN_INC = 1};
|
||||
#endif
|
||||
|
||||
|
||||
enum {SPACEY_LIVES_DEFAULT = 5};
|
||||
enum {SPACEY_SHELL_SPEED_DEFAULT = 16};
|
||||
enum {SPACEY_ALIEN_SPEED_DEFAULT = 2};
|
||||
enum {SPACEY_ALIEN_CREATE_STEPS_DEFAULT = 4};
|
||||
enum {SPACEY_ALIEN_NUM_DEFAULT = 3};
|
||||
enum {SPACEY_SHELL_NUM_DEFAULT = 2};
|
||||
|
||||
|
||||
#define min(x, y) ((x) < (y) ? (x) : (y))
|
||||
|
||||
static spacey_t spacey_data;
|
||||
static spacey_t * const spacey = &spacey_data;
|
||||
|
||||
|
||||
void
|
||||
spacey_lives_set (uint8_t lives)
|
||||
{
|
||||
spacey->lives = lives;
|
||||
}
|
||||
|
||||
|
||||
void
|
||||
spacey_alien_speed_set (uint8_t alien_speed)
|
||||
{
|
||||
spacey->aliens.move_period = spacey->poll_rate / alien_speed;
|
||||
}
|
||||
|
||||
|
||||
void
|
||||
spacey_shell_speed_set (uint8_t shell_speed)
|
||||
{
|
||||
spacey->shells.move_period = spacey->poll_rate / shell_speed;
|
||||
}
|
||||
|
||||
|
||||
void
|
||||
spacey_alien_create_steps_set (uint8_t alien_create_steps)
|
||||
{
|
||||
spacey->alien_create_steps = alien_create_steps;
|
||||
}
|
||||
|
||||
|
||||
void
|
||||
spacey_alien_num_set (uint8_t aliens_num)
|
||||
{
|
||||
spacey->aliens.num = min (aliens_num, SPACEY_ALIENS_MAX);
|
||||
}
|
||||
|
||||
|
||||
void
|
||||
spacey_shell_num_set (uint8_t shells_num)
|
||||
{
|
||||
spacey->shells.num = min (shells_num, SPACEY_SHELLS_MAX);
|
||||
}
|
||||
|
||||
|
||||
void
|
||||
spacey_options_set (spacey_options_t options)
|
||||
{
|
||||
spacey->options = options;
|
||||
}
|
||||
|
||||
|
||||
void
|
||||
spacey_init (uint16_t poll_rate,
|
||||
uint8_t x_size, uint8_t y_size,
|
||||
void (*display_handler) (void *data, uint8_t row, uint8_t col,
|
||||
spacey_pix_t type),
|
||||
void *display_data)
|
||||
{
|
||||
spacey->size.x = x_size;
|
||||
spacey->size.y = y_size;
|
||||
spacey->display_hook = display_handler;
|
||||
spacey->display_data = display_data;
|
||||
spacey->active = 0;
|
||||
spacey->poll_rate = poll_rate;
|
||||
spacey->event_hook = NULL;
|
||||
|
||||
spacey->options.aliens_wrap = 0;
|
||||
spacey->options.aliens_evasive = 0;
|
||||
|
||||
spacey_alien_num_set (SPACEY_ALIEN_NUM_DEFAULT);
|
||||
spacey_shell_num_set (SPACEY_SHELL_NUM_DEFAULT);
|
||||
spacey_shell_speed_set (SPACEY_SHELL_SPEED_DEFAULT);
|
||||
spacey_alien_speed_set (SPACEY_ALIEN_SPEED_DEFAULT);
|
||||
spacey_alien_create_steps_set (SPACEY_ALIEN_CREATE_STEPS_DEFAULT);
|
||||
spacey->lives = SPACEY_LIVES_DEFAULT;
|
||||
}
|
||||
|
||||
|
||||
void
|
||||
spacey_event_handler_set (void (*event_handler) (void *, spacey_event_t),
|
||||
void *event_data)
|
||||
{
|
||||
spacey->event_hook = event_handler;
|
||||
spacey->event_data = event_data;
|
||||
}
|
||||
|
||||
|
||||
static void
|
||||
spacey_pixel_set (spacey_pos_t *pos,
|
||||
spacey_pix_t type)
|
||||
{
|
||||
spacey->display_hook (spacey->display_data, pos->x, pos->y, type);
|
||||
}
|
||||
|
||||
|
||||
/* Return if obj is at the same point as another alien. */
|
||||
static spacey_obj_t *
|
||||
spacey_alien_conflict_p (spacey_obj_t *obj)
|
||||
{
|
||||
int8_t i;
|
||||
|
||||
for (i = 0; i < spacey->aliens.num; i++)
|
||||
{
|
||||
spacey_obj_t *alien = &spacey->aliens.array[i];
|
||||
|
||||
if (!alien->active || alien == obj)
|
||||
continue;
|
||||
|
||||
if (alien->pos.x == obj->pos.x
|
||||
&& alien->pos.y == obj->pos.y)
|
||||
return alien;
|
||||
}
|
||||
return 0;
|
||||
}
|
||||
|
||||
|
||||
/* Return if obj is at the same point as another shell. */
|
||||
static spacey_obj_t *
|
||||
spacey_shell_conflict_p (spacey_obj_t *obj)
|
||||
{
|
||||
int8_t i;
|
||||
|
||||
for (i = 0; i < spacey->shells.num; i++)
|
||||
{
|
||||
spacey_obj_t *shell = &spacey->shells.array[i];
|
||||
|
||||
if (!shell->active || shell == obj)
|
||||
continue;
|
||||
|
||||
if (shell->pos.x == obj->pos.x
|
||||
&& shell->pos.y == obj->pos.y)
|
||||
return shell;
|
||||
}
|
||||
return 0;
|
||||
}
|
||||
|
||||
|
||||
static void
|
||||
spacey_gun_move (int8_t inc)
|
||||
{
|
||||
int8_t gun_x;
|
||||
|
||||
spacey_pixel_set (&spacey->gun, SPACEY_PIX_OFF);
|
||||
|
||||
gun_x = spacey->gun.x + inc;
|
||||
if (gun_x >= spacey->size.x)
|
||||
gun_x = 0;
|
||||
else if (gun_x < 0)
|
||||
gun_x = spacey->size.x - 1;
|
||||
spacey->gun.x = gun_x;
|
||||
|
||||
spacey_pixel_set (&spacey->gun, SPACEY_PIX_GUN);
|
||||
}
|
||||
|
||||
|
||||
/* Return true if move off display. */
|
||||
static bool
|
||||
spacey_shell_move (spacey_obj_t *shell)
|
||||
{
|
||||
/* Erase the previous position of the shell except if still
|
||||
at gun. */
|
||||
if (shell->pos.x != spacey->gun.x
|
||||
|| shell->pos.y != spacey->gun.y)
|
||||
spacey_pixel_set (&shell->pos, SPACEY_PIX_OFF);
|
||||
|
||||
/* Shells only go straight up. */
|
||||
shell->pos.y -= SPACEY_SHELL_INC;
|
||||
|
||||
if (shell->pos.y < 0)
|
||||
return 1;
|
||||
|
||||
spacey_pixel_set (&shell->pos, SPACEY_PIX_SHELL);
|
||||
return 0;
|
||||
}
|
||||
|
||||
|
||||
static void
|
||||
spacey_alien_erase (spacey_obj_t *alien)
|
||||
{
|
||||
spacey_pixel_set (&alien->pos, SPACEY_PIX_OFF);
|
||||
}
|
||||
|
||||
|
||||
/* Return true if move off display or get to the bottom. */
|
||||
static bool
|
||||
spacey_alien_move (spacey_obj_t *alien)
|
||||
{
|
||||
int8_t x_jump;
|
||||
|
||||
/* Aliens move down randomly zig zagging. */
|
||||
alien->pos.y++;
|
||||
|
||||
/* Randomly move left or right. */
|
||||
x_jump = 2 * (rand () & 1) - 1;
|
||||
|
||||
/* Don't move into line of gun if being evasive. */
|
||||
if (spacey->options.aliens_evasive &&
|
||||
spacey->gun.x == alien->pos.x + x_jump)
|
||||
x_jump = -x_jump;
|
||||
|
||||
alien->pos.x += x_jump;
|
||||
|
||||
/* Keep the alien within bounds. */
|
||||
if (alien->pos.x < 0 || alien->pos.x >= spacey->size.x)
|
||||
{
|
||||
if (spacey->options.aliens_wrap)
|
||||
alien->pos.x = spacey->size.x - abs (alien->pos.x);
|
||||
else
|
||||
alien->pos.x -= 2 * x_jump;
|
||||
}
|
||||
|
||||
if (alien->pos.y < spacey->size.y)
|
||||
spacey_pixel_set (&alien->pos, SPACEY_PIX_ALIEN);
|
||||
|
||||
if (alien->pos.y >= (spacey->size.y - 1))
|
||||
return 1;
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
|
||||
static void
|
||||
spacey_alien_create (void)
|
||||
{
|
||||
int8_t i;
|
||||
|
||||
for (i = 0; i < spacey->aliens.num; i++)
|
||||
{
|
||||
spacey_obj_t *alien = &spacey->aliens.array[i];
|
||||
|
||||
if (alien->active)
|
||||
continue;
|
||||
|
||||
/* Aliens start at the top. */
|
||||
alien->pos.y = 0;
|
||||
|
||||
while (1)
|
||||
{
|
||||
/* Choose random x position. */
|
||||
alien->pos.x = rand () % spacey->size.x;
|
||||
#if DISPLAY_INTERLACE
|
||||
/* Ensure x position is even. */
|
||||
alien->pos.x &= ~1;
|
||||
#endif
|
||||
alien->active = 1;
|
||||
|
||||
/* Ensure aliens start at different spots to be fair! */
|
||||
if (!spacey_alien_conflict_p (alien))
|
||||
break;
|
||||
}
|
||||
spacey->stats.aliens_live++;
|
||||
spacey_pixel_set (&alien->pos, SPACEY_PIX_ALIEN);
|
||||
return;
|
||||
}
|
||||
/* If we get to here then we already have too many aliens. */
|
||||
}
|
||||
|
||||
|
||||
static void
|
||||
spacey_shell_create (void)
|
||||
{
|
||||
int8_t i;
|
||||
|
||||
for (i = 0; i < spacey->shells.num; i++)
|
||||
{
|
||||
spacey_obj_t *shell = &spacey->shells.array[i];
|
||||
|
||||
if (shell->active)
|
||||
continue;
|
||||
|
||||
shell->pos = spacey->gun;
|
||||
shell->active = 1;
|
||||
spacey->stats.shells_fired++;
|
||||
/* Don't turn shell on initially since it will erase the gun. */
|
||||
return;
|
||||
}
|
||||
/* If we get to here then we already have too many shells. */
|
||||
}
|
||||
|
||||
|
||||
static void
|
||||
spacey_alien_kill (spacey_obj_t *alien)
|
||||
{
|
||||
alien->active = 0;
|
||||
spacey->stats.aliens_live--;
|
||||
}
|
||||
|
||||
|
||||
static void
|
||||
spacey_shell_kill (spacey_obj_t *shell)
|
||||
{
|
||||
shell->active = 0;
|
||||
}
|
||||
|
||||
|
||||
static void
|
||||
spacey_event (spacey_event_t event)
|
||||
{
|
||||
if (spacey->event_hook)
|
||||
spacey->event_hook (spacey->event_data, event);
|
||||
}
|
||||
|
||||
|
||||
static void
|
||||
spacey_alien_hit (spacey_obj_t *alien, spacey_obj_t *shell)
|
||||
{
|
||||
spacey_alien_kill (alien);
|
||||
spacey->stats.aliens_killed++;
|
||||
|
||||
spacey_shell_kill (shell);
|
||||
spacey_pixel_set (&shell->pos, SPACEY_PIX_OFF);
|
||||
|
||||
spacey_event (SPACEY_EVENT_ALIEN_HIT);
|
||||
}
|
||||
|
||||
|
||||
static void
|
||||
spacey_alien_landed (void)
|
||||
{
|
||||
spacey->stats.aliens_landed++;
|
||||
if (spacey->stats.aliens_landed >= spacey->lives)
|
||||
spacey->active = 0;
|
||||
|
||||
spacey_event (SPACEY_EVENT_ALIEN_LANDED);
|
||||
}
|
||||
|
||||
|
||||
static void
|
||||
spacey_shells_move (void)
|
||||
{
|
||||
int8_t i;
|
||||
|
||||
spacey->shells.move_clock++;
|
||||
if (spacey->shells.move_clock < spacey->shells.move_period)
|
||||
return;
|
||||
spacey->shells.move_clock = 0;
|
||||
|
||||
/* Shells move until they hit an alien or move off the display. */
|
||||
|
||||
for (i = 0; i < spacey->shells.num; i++)
|
||||
{
|
||||
spacey_obj_t *shell = &spacey->shells.array[i];
|
||||
|
||||
if (!shell->active)
|
||||
continue;
|
||||
|
||||
if (spacey_shell_move (shell))
|
||||
spacey_shell_kill (shell);
|
||||
else
|
||||
{
|
||||
spacey_obj_t *alien;
|
||||
|
||||
/* Check if we've hit an alien. */
|
||||
while ((alien = spacey_alien_conflict_p (shell)))
|
||||
{
|
||||
/* We've hit an alien so kill it and the shell. */
|
||||
spacey_alien_hit (alien, shell);
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
static void
|
||||
spacey_aliens_move (void)
|
||||
{
|
||||
int8_t i;
|
||||
uint8_t steps;
|
||||
|
||||
spacey->aliens.move_clock++;
|
||||
if (spacey->aliens.move_clock < spacey->aliens.move_period)
|
||||
return;
|
||||
spacey->aliens.move_clock = 0;
|
||||
|
||||
/* Erase all aliens before moving them. */
|
||||
for (i = 0; i < spacey->aliens.num; i++)
|
||||
{
|
||||
spacey_obj_t *alien = &spacey->aliens.array[i];
|
||||
|
||||
if (!alien->active)
|
||||
continue;
|
||||
|
||||
spacey_alien_erase (alien);
|
||||
}
|
||||
|
||||
/* Now move and redraw aliens. */
|
||||
for (i = 0; i < spacey->aliens.num; i++)
|
||||
{
|
||||
spacey_obj_t *alien = &spacey->aliens.array[i];
|
||||
|
||||
if (!alien->active)
|
||||
continue;
|
||||
|
||||
if (spacey_alien_move (alien))
|
||||
{
|
||||
if (alien->pos.y == spacey->gun.y)
|
||||
{
|
||||
/* The alien has reached Earth. */
|
||||
spacey_alien_landed ();
|
||||
}
|
||||
else
|
||||
{
|
||||
/* The alien has moved off the display so disable it. */
|
||||
spacey_alien_kill (alien);
|
||||
|
||||
/* Redraw the gun in case it got hit by the alien. */
|
||||
spacey_pixel_set (&spacey->gun, SPACEY_PIX_GUN);
|
||||
}
|
||||
}
|
||||
else
|
||||
{
|
||||
spacey_obj_t *shell;
|
||||
|
||||
while ((shell = spacey_shell_conflict_p (alien)))
|
||||
{
|
||||
/* The alien hit a shell so kill it and the shell. */
|
||||
spacey_alien_hit (alien, shell);
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
/* Randomly create an alien. If there are no aliens create a new
|
||||
one more rapidly. */
|
||||
if (!spacey->stats.aliens_live)
|
||||
steps = 2;
|
||||
else
|
||||
steps = spacey->alien_create_steps;
|
||||
|
||||
if ((rand () % steps) == 0)
|
||||
spacey_alien_create ();
|
||||
}
|
||||
|
||||
|
||||
/* Update the state of the game. */
|
||||
bool
|
||||
spacey_update (void)
|
||||
{
|
||||
/* Allow playing with the gun even if game inactive. */
|
||||
spacey_shells_move ();
|
||||
|
||||
if (!spacey->active)
|
||||
return 0;
|
||||
|
||||
spacey_aliens_move ();
|
||||
return 1;
|
||||
}
|
||||
|
||||
|
||||
/* Move the gun position to the right wrapping back around on left. */
|
||||
void
|
||||
spacey_gun_move_right (void)
|
||||
{
|
||||
spacey_gun_move (SPACEY_GUN_INC);
|
||||
}
|
||||
|
||||
|
||||
/* Move the gun position to the left wrapping back around on right. */
|
||||
void
|
||||
spacey_gun_move_left (void)
|
||||
{
|
||||
spacey_gun_move (-SPACEY_GUN_INC);
|
||||
}
|
||||
|
||||
|
||||
/* Fire the gun. */
|
||||
void
|
||||
spacey_gun_fire (void)
|
||||
{
|
||||
spacey_shell_create ();
|
||||
}
|
||||
|
||||
|
||||
/* Start a new game. */
|
||||
void
|
||||
spacey_start (void)
|
||||
{
|
||||
int8_t i;
|
||||
int8_t j;
|
||||
|
||||
spacey->shells.move_clock = 0;
|
||||
spacey->aliens.move_clock = 0;
|
||||
|
||||
for (i = 0; i < spacey->shells.num; i++)
|
||||
{
|
||||
spacey_obj_t *shell = &spacey->shells.array[i];
|
||||
|
||||
shell->active = 0;
|
||||
}
|
||||
|
||||
for (i = 0; i < spacey->aliens.num; i++)
|
||||
{
|
||||
spacey_obj_t *alien = &spacey->aliens.array[i];
|
||||
|
||||
alien->active = 0;
|
||||
}
|
||||
|
||||
/* Turn all pixels off. */
|
||||
for (i = 0; i < spacey->size.x; i++)
|
||||
for (j = 0; j < spacey->size.y; j++)
|
||||
{
|
||||
spacey_pos_t pos = {i, j};
|
||||
|
||||
spacey_pixel_set (&pos, SPACEY_PIX_OFF);
|
||||
}
|
||||
|
||||
/* Display gun in centre of display. */
|
||||
spacey->gun.x = (spacey->size.x / 2) & ~1;
|
||||
spacey->gun.y = spacey->size.y - 1;
|
||||
spacey_pixel_set (&spacey->gun, SPACEY_PIX_GUN);
|
||||
|
||||
spacey->stats.aliens_live = 0;
|
||||
spacey->stats.aliens_killed = 0;
|
||||
spacey->stats.aliens_landed = 0;
|
||||
spacey->stats.shells_fired = 0;
|
||||
spacey->active = 1;
|
||||
}
|
||||
|
||||
|
||||
uint8_t
|
||||
spacey_aliens_killed_get (void)
|
||||
{
|
||||
return spacey->stats.aliens_killed;
|
||||
}
|
||||
|
||||
|
||||
uint8_t
|
||||
spacey_shells_fired_get (void)
|
||||
{
|
||||
return spacey->stats.shells_fired;
|
||||
}
|
||||
@ -0,0 +1,152 @@
|
||||
/** @file spacey.h
|
||||
@author M. P. Hayes, UCECE
|
||||
@date 13 March 2007
|
||||
@brief This is the interface for a simple space invaders game.
|
||||
*/
|
||||
|
||||
#ifndef SPACEY_H
|
||||
#define SPACEY_H
|
||||
|
||||
#include "system.h"
|
||||
|
||||
|
||||
enum {SPACEY_ALIENS_MAX = 4, SPACEY_SHELLS_MAX = 4};
|
||||
|
||||
|
||||
typedef enum {SPACEY_PIX_OFF, SPACEY_PIX_GUN, SPACEY_PIX_ALIEN,
|
||||
SPACEY_PIX_SHELL, SPACEY_PIX_TYPE_NUM} spacey_pix_t;
|
||||
|
||||
typedef enum {SPACEY_EVENT_ALIEN_HIT, SPACEY_EVENT_ALIEN_LANDED} spacey_event_t;
|
||||
|
||||
|
||||
typedef enum {SPACEY_ALIEN, SPACEY_SHELL} spacey_type_t;
|
||||
|
||||
/* Positions must be signed. */
|
||||
typedef struct
|
||||
{
|
||||
int8_t x;
|
||||
int8_t y;
|
||||
} spacey_pos_t;
|
||||
|
||||
|
||||
typedef struct
|
||||
{
|
||||
spacey_pos_t pos;
|
||||
bool active;
|
||||
} spacey_obj_t;
|
||||
|
||||
|
||||
typedef struct
|
||||
{
|
||||
spacey_obj_t array[SPACEY_ALIENS_MAX];
|
||||
uint8_t num;
|
||||
uint16_t move_period;
|
||||
uint16_t move_clock;
|
||||
} spacey_objs_t;
|
||||
|
||||
|
||||
typedef struct
|
||||
{
|
||||
uint8_t aliens_killed;
|
||||
uint8_t aliens_landed;
|
||||
uint8_t shells_fired;
|
||||
uint8_t aliens_live;
|
||||
} spacey_stats_t;
|
||||
|
||||
|
||||
typedef struct
|
||||
{
|
||||
int aliens_wrap:1;
|
||||
int aliens_evasive:1;
|
||||
} spacey_options_t;
|
||||
|
||||
|
||||
typedef struct
|
||||
{
|
||||
/* If we have lots of objects then a linked list would be more
|
||||
efficient for the aliens and shells. */
|
||||
spacey_objs_t aliens;
|
||||
spacey_objs_t shells;
|
||||
spacey_pos_t gun;
|
||||
spacey_pos_t size;
|
||||
spacey_stats_t stats;
|
||||
uint16_t poll_rate; /* Hz */
|
||||
uint8_t alien_create_steps;
|
||||
uint8_t lives;
|
||||
void (*display_hook) (void *data, uint8_t row, uint8_t col, spacey_pix_t type);
|
||||
void *display_data;
|
||||
void (*event_hook) (void *data, spacey_event_t event);
|
||||
void *event_data;
|
||||
spacey_options_t options;
|
||||
bool active;
|
||||
} spacey_t;
|
||||
|
||||
|
||||
void
|
||||
spacey_event_handler_set (void (*event_handler) (void *, spacey_event_t),
|
||||
void *event_data);
|
||||
|
||||
void
|
||||
spacey_init (uint16_t poll_rate,
|
||||
uint8_t x_size, uint8_t y_size,
|
||||
void (*display_handler) (void *data, uint8_t row, uint8_t col,
|
||||
spacey_pix_t type),
|
||||
void *display_data);
|
||||
|
||||
/** Start a new game. */
|
||||
void
|
||||
spacey_start (void);
|
||||
|
||||
/** Update state of game. */
|
||||
bool
|
||||
spacey_update (void);
|
||||
|
||||
/** Specify number of lives we have before we die. */
|
||||
void
|
||||
spacey_lives_set (uint8_t lives);
|
||||
|
||||
/** Set alien speed in Hz. */
|
||||
void
|
||||
spacey_alien_speed_set (uint8_t alien_speed);
|
||||
|
||||
/** Set shell speed in Hz. */
|
||||
void
|
||||
spacey_shell_speed_set (uint8_t shell_speed);
|
||||
|
||||
/** Set number of steps that a new alien is created on average. */
|
||||
void
|
||||
spacey_alien_create_steps_set (uint8_t alien_create_steps);
|
||||
|
||||
/** Set maximum number of aliens on display at once. */
|
||||
void
|
||||
spacey_alien_num_set (uint8_t aliens_num);
|
||||
|
||||
/** Set maximum number of shells on display at once. */
|
||||
void
|
||||
spacey_shell_num_set (uint8_t shells_num);
|
||||
|
||||
/** Set game options. */
|
||||
void
|
||||
spacey_options_set (spacey_options_t options);
|
||||
|
||||
/** Move gun to right. */
|
||||
void
|
||||
spacey_gun_move_right (void);
|
||||
|
||||
/** Move gun to left. */
|
||||
void
|
||||
spacey_gun_move_left (void);
|
||||
|
||||
/** Fire gun. */
|
||||
void
|
||||
spacey_gun_fire (void);
|
||||
|
||||
/** Return number of aliens killed in current game. */
|
||||
uint8_t
|
||||
spacey_aliens_killed_get (void);
|
||||
|
||||
/** Return number of shells fired in current game. */
|
||||
uint8_t
|
||||
spacey_shells_fired_get (void);
|
||||
|
||||
#endif
|
||||
@ -0,0 +1,3 @@
|
||||
/* E2, D4 */
|
||||
"*8E3EBBE2EB3BDDAAD4DA3AA2AE3EAABBC4CB3BAAGGEEBBE2EB3BDDAAD4DA3AA2AE3EAABBC4CB3BAABB"
|
||||
|
||||
Loading…
Reference in new issue