updated comments, updated buy menu, info support for map window, added const to target selection

3 files changed, 9 insertions, 10 deletions

diff --git a/src/render/draw.cc b/src/render/draw.cc
index 9e6bb5a..7d0242d 100644
--- a/src/render/draw.cc
+++ b/src/render/draw.cc
@@ -1344,7 +1344,7 @@ void draw(float seconds)
 }
 
 // draw HUD target world space geometry, like dock indicators
-void draw_target(core::Entity *entity)
+void draw_target(const core::Entity *entity)
 {
 	model::Model *model = entity->model();
 	if (!model)
diff --git a/src/render/draw.h b/src/render/draw.h
index b13c7b0..54e8507 100644
--- a/src/render/draw.h
+++ b/src/render/draw.h
@@ -18,7 +18,7 @@ namespace render
 /// draw the world
 void draw(float seconds);
 
-void draw_target(core::Entity *entity);
+void draw_target(const core::Entity *entity);
 
 /// reset
 void reset();
diff --git a/src/render/tgafile.cc b/src/render/tgafile.cc
index db54645..10082e6 100644
--- a/src/render/tgafile.cc
+++ b/src/render/tgafile.cc
@@ -270,20 +270,20 @@ void TGA::save(const char *filename, Image & image)
 				pixel_data[3] = *image[index+3];
 
 			if (block_length == 0) {
+				// if the block is empty, copy the first pixel
 				memcpy(block_data, pixel_data, image.channels());
 				block_length++;
+				// by default, the block is not compressed
 				compress = false;
 			} else {
+				// if the current block is not compressed
 				if (!compress) {
-
-					// uncompressed block and pixel_data differs from the last pixel
+					// if the previous pixel differs from the pixel data
 					if (memcmp(&block_data[(block_length-1)*image.channels()], pixel_data, image.channels()) != 0) {
 						// append pixel
 						memcpy(&block_data[block_length*image.channels()], pixel_data, image.channels());
-
 						block_length++;
 					} else {
-
 						// uncompressed block and pixel data is identical
 						if (block_length > 1) {
 							// write the uncompressed block
@@ -292,17 +292,16 @@ void TGA::save(const char *filename, Image & image)
 							ofs.write((char *)block_data, (block_length - 1) * image.channels());
 							block_length = 1;
 						}
+						// create a commpressed block
 						memcpy(block_data, pixel_data, image.channels());
 						block_length++;
 						compress = true;
 					}
-
+				// if the current block is compressed
 				} else {
-
-					// compressed block and pixel data are identical
+					// if the previous pixel and the pixel data are identical
 					if (memcmp(block_data, pixel_data, image.channels()) == 0) {
 						block_length++;
-
 					} else {
 
 						// compressed block and pixel data differs