medfall

commit 50425cab424edd07fb2d9707882947d771d86c0d
parent f10c81fd72aa8774e33d7113e62890d45c5f9f54
Author: Michael Savage <mikejsavage@gmail.com>
Date:   Sat Aug  1 14:30:03 +0200

Add preprocessor. Currently only splits images into tiles

Diffstat:
.gitignore
 | 
1
+
Makefile
 | 
21
+++++++++++++++------
pp.cc
 | 
60
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
3 files changed, 76 insertions(+), 6 deletions(-)
diff --git a/.gitignore b/.gitignore
@@ -1,5 +1,6 @@
 bsp
 hm
+pp
 *.o
 ttvfs
 *.bsp
diff --git a/Makefile b/Makefile
@@ -1,4 +1,4 @@
-all: bsp hm
+all: bsp hm pp
 
 BSPSRCS = bsp.cc bsp_renderer.cc gl.cc
 BSPOBJS := $(patsubst %.cc,%.o,$(BSPSRCS))
@@ -6,6 +6,9 @@ BSPOBJS := $(patsubst %.cc,%.o,$(BSPSRCS))
 HMSRCS = hm.cc gl.cc stb_image.cc stb_perlin.cc
 HMOBJS := $(patsubst %.cc,%.o,$(HMSRCS))
 
+PPSRCS = pp.cc stb_image.cc stb_image_write.cc
+PPOBJS := $(patsubst %.cc,%.o,$(PPSRCS))
+
 WARNINGS = -Wall -Wextra -Wno-unused-parameter -Wno-unused-function -Wno-write-strings
 CXXFLAGS += -std=c++11 -O2 $(WARNINGS) -ggdb3 -DGL_GLEXT_PROTOTYPES
 LDFLAGS += -lm -lGL -lGLEW -lglfw
@@ -15,16 +18,22 @@ picky: WARNINGS += -Wunused-parameter -Wunused-function -Wwrite-strings
 picky: all
 
 hm: $(HMOBJS)
-	$(CXX) $(HMOBJS) $(LDFLAGS) -o hm
+	$(CXX) $^ $(LDFLAGS) -o $@
 
 bsp: $(BSPOBJS)
-	$(CXX) $(BSPOBJS) $(LDFLAGS) -o bsp
+	$(CXX) $^ $(LDFLAGS) -o $@
+
+pp: $(PPOBJS)
+	$(CXX) $^ $(LDFLAGS) -o $@
 
 clean:
-	rm -f bsp hm $(BSPOBJS) $(HMOBJS)
+	rm -f bsp hm $(BSPOBJS) $(HMOBJS) $(PPOBJS)
 
 stb_image.o: stb_image.cc
-	$(CXX) $(CXXFLAGS) -c -o stb_image.o stb_image.cc -DSTB_IMAGE_IMPLEMENTATION
+	$(CXX) $(CXXFLAGS) -c -o $@ $^ -DSTB_IMAGE_IMPLEMENTATION
+
+stb_image_write.o: stb_image_write.cc
+	$(CXX) $(CXXFLAGS) -c -o $@ $^ -DSTB_IMAGE_WRITE_IMPLEMENTATION
 
 stb_perlin.o: stb_perlin.cc
-	$(CXX) $(CXXFLAGS) -c -o stb_perlin.o stb_perlin.cc -DSTB_PERLIN_IMPLEMENTATION
+	$(CXX) $(CXXFLAGS) -c -o $@ $^ -DSTB_PERLIN_IMPLEMENTATION
diff --git a/pp.cc b/pp.cc
@@ -0,0 +1,60 @@
+#include <string>
+#include <iostream>
+#include <fstream>
+
+#include <stdio.h>
+#include <sys/stat.h>
+
+#include "int.h"
+#include "stb_image.h"
+#include "stb_image_write.h"
+
+const int TILE_SIZE = 128;
+
+int w, h;
+u8 * pixels;
+
+void write_tile( const std::string & dir, const int tx, const int ty ) {
+	u8 tile[ TILE_SIZE * TILE_SIZE ];
+
+	for( int y = 0; y < TILE_SIZE; y++ ) {
+		for( int x = 0; x < TILE_SIZE; x++ ) {
+			const int gy = ty * TILE_SIZE + y;
+			const int gx = tx * TILE_SIZE + x;
+
+			if( gy >= h || gx >= w ) {
+				tile[ y * TILE_SIZE + x ] = 0;
+			}
+			else {
+				tile[ y * TILE_SIZE + x ] = pixels[ ( ty * TILE_SIZE + y ) * w + tx * TILE_SIZE + x ];
+			}
+		}
+	}
+
+	const std::string file = dir + "/" + std::to_string( tx ) + "_" + std::to_string( ty ) + ".tga"; 
+	printf( "writing tile %s\n", file.c_str() );
+	stbi_write_tga( file.c_str(), TILE_SIZE, TILE_SIZE, 1, tile );
+}
+
+int main( int argc, char ** argv ) {
+	const std::string path = argc == 2 ? argv[ 1 ] : "mountains512.png";
+	pixels = stbi_load( path.c_str(), &w, &h, nullptr, 1 );
+	
+	const std::string dir = path + ".parts";
+
+	mkdir( dir.c_str(), 0755 );
+
+	for( int ty = 0; ty < h / TILE_SIZE; ty++ ) {
+		for( int tx = 0; tx < w / TILE_SIZE; tx++ ) {
+			write_tile( dir, tx, ty );
+		}
+	}
+
+	std::ofstream dims( dir + "/dims.txt" );
+	dims << std::to_string( w ) + " " + std::to_string( h );
+	dims.close();
+
+	stbi_image_free( pixels );
+
+	return 0;
+}