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Makefile
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LIB_DIR=lib
OUT_DIR=assets\js
CHIP_SRC=$(LIB_DIR)/Chipmunk2D/src
CHIP_INC=$(LIB_DIR)/Chipmunk2D/include
SRCS=\
$(CHIP_SRC)/chipmunk.c $(CHIP_SRC)/cpArbiter.c $(CHIP_SRC)/cpArray.c \
$(CHIP_SRC)/cpBBTree.c $(CHIP_SRC)/cpBody.c $(CHIP_SRC)/cpCollision.c \
$(CHIP_SRC)/cpConstraint.c $(CHIP_SRC)/cpDampedRotarySpring.c \
$(CHIP_SRC)/cpDampedSpring.c $(CHIP_SRC)/cpGearJoint.c \
$(CHIP_SRC)/cpGrooveJoint.c $(CHIP_SRC)/cpHashSet.c \
$(CHIP_SRC)/cpHastySpace.c $(CHIP_SRC)/cpMarch.c $(CHIP_SRC)/cpPinJoint.c \
$(CHIP_SRC)/cpPivotJoint.c $(CHIP_SRC)/cpPolyShape.c \
$(CHIP_SRC)/cpPolyline.c $(CHIP_SRC)/cpRatchetJoint.c \
$(CHIP_SRC)/cpRobust.c $(CHIP_SRC)/cpRotaryLimitJoint.c \
$(CHIP_SRC)/cpShape.c $(CHIP_SRC)/cpSimpleMotor.c \
$(CHIP_SRC)/cpSlideJoint.c $(CHIP_SRC)/cpSpace.c \
$(CHIP_SRC)/cpSpaceComponent.c $(CHIP_SRC)/cpSpaceDebug.c \
$(CHIP_SRC)/cpSpaceHash.c $(CHIP_SRC)/cpSpaceQuery.c \
$(CHIP_SRC)/cpSpaceStep.c $(CHIP_SRC)/cpSpatialIndex.c \
$(CHIP_SRC)/cpSweep1D.c \
$(LIB_DIR)/memory.c $(LIB_DIR)/physics.c $(LIB_DIR)/gl.c $(LIB_DIR)/imageProcessing.c
all: $(OUT_DIR)/lib.js
# General options: https://emscripten.org/docs/tools_reference/emcc.html
# -s flags: https://github.com/emscripten-core/emscripten/blob/master/src/settings.js
#
# Extra:
# https://emscripten.org/docs/porting/Debugging.html
# https://emscripten.org/docs/porting/connecting_cpp_and_javascript/Interacting-with-code.html#interacting-with-code-ccall-cwrap
# -s EXTRA_EXPORTED_RUNTIME_METHODS=['cwrap']
#
# Debugging:
# https://emscripten.org/docs/porting/Debugging.html#debugging-debug-information-g
# https://emscripten.org/docs/tools_reference/emcc.html
# -s ASSERTIONS=2
# -s STACK_OVERFLOW_CHECK=2
# -g4
# --source-map-base '/pixel/'
#
# As of August 2020, WASM=2 does not work properly, even if loading the correct file
# manually during runtime... That's why I'm compiling it twice...
#
# 8388608 bytes (2097152 stack + 6291456 heap) is enough to hold even the largest
# structure, ImageInfo, which has a total of 4719244 bytes.
$(OUT_DIR)/lib.js: $(SRCS)
emcc \
-I$(CHIP_INC) \
-s WASM=0 \
-s PRECISE_F32=0 \
-s DYNAMIC_EXECUTION=0 \
-s EXPORTED_FUNCTIONS='["_allocateImageInfo", "_getImageInfoData", "_getImageInfoPoints", "_freeImageInfo", "_processImage", "_allocateBuffer", "_freeBuffer", "_draw", "_drawScale", "_drawRotate", "_drawScaleRotate", "_init", "_getViewYPtr", "_getFirstPropertyPtr", "_viewResized", "_step", "_destroy", "_initLevelSpriteSheet", "_renderBackground", "_render"]' \
-s EXTRA_EXPORTED_RUNTIME_METHODS='["stackSave", "stackAlloc", "stackRestore"]' \
-s ALLOW_MEMORY_GROWTH=0 \
-s INITIAL_MEMORY=8388608 \
-s MAXIMUM_MEMORY=8388608 \
-s TOTAL_STACK=2097152 \
-s SUPPORT_LONGJMP=0 \
-s MINIMAL_RUNTIME=0 \
-s ASSERTIONS=0 \
-s STACK_OVERFLOW_CHECK=0 \
-s EXPORT_NAME=CLib \
-s MODULARIZE=1 \
-s ENVIRONMENT='web,webview' \
-Os \
-DNDEBUG \
-DCP_USE_DOUBLES=0 \
-o $@ \
$(SRCS)
move $(OUT_DIR)\lib.js $(OUT_DIR)\lib-nowasm.js
emcc \
-I$(CHIP_INC) \
-s WASM=1 \
-s DYNAMIC_EXECUTION=0 \
-s EXPORTED_FUNCTIONS='["_allocateImageInfo", "_getImageInfoData", "_getImageInfoPoints", "_freeImageInfo", "_processImage", "_allocateBuffer", "_freeBuffer", "_draw", "_drawScale", "_drawRotate", "_drawScaleRotate", "_init", "_getViewYPtr", "_getFirstPropertyPtr", "_viewResized", "_step", "_destroy", "_initLevelSpriteSheet", "_renderBackground", "_render"]' \
-s EXTRA_EXPORTED_RUNTIME_METHODS='["stackSave", "stackAlloc", "stackRestore"]' \
-s ALLOW_MEMORY_GROWTH=0 \
-s INITIAL_MEMORY=8388608 \
-s MAXIMUM_MEMORY=8388608 \
-s TOTAL_STACK=2097152 \
-s SUPPORT_LONGJMP=0 \
-s MINIMAL_RUNTIME=0 \
-s ASSERTIONS=0 \
-s STACK_OVERFLOW_CHECK=0 \
-s EXPORT_NAME=CLib \
-s MODULARIZE=1 \
-s ENVIRONMENT='web,webview' \
-Os \
-DNDEBUG \
-DCP_USE_DOUBLES=0 \
-o $@ \
$(SRCS)
cacls $(OUT_DIR)\lib.js /E /P Todos:R
cacls $(OUT_DIR)\lib.js.mem /E /P Todos:R
cacls $(OUT_DIR)\lib.wasm /E /P Todos:R
cacls $(OUT_DIR)\lib-nowasm.js /E /P Todos:R
# Windows
clean:
del $(OUT_DIR)\lib.js
del $(OUT_DIR)\lib.js.mem
del $(OUT_DIR)\lib.wasm
del $(OUT_DIR)\lib-nowasm.js
rebuild:
$(MAKE) clean
$(MAKE) all