sprite_read; sprite_draw; sprite_deloc. TODO make sprite array reader

draw.h

@@ -232,5 +232,19 @@ void fill_circle(
 				location[(y+_y)*frame.skip+x+_x] = write;
 }
 
+void sprite_draw(
+	const struct frame frame,
+	const int y, const int x,
+	const struct sprite *sprite
+) {
+#ifndef RELEASE
+	assert(in_frame(frame, y, x));
+	assert(in_frame(frame, y+sprite->heigth, x+sprite->width));
+#endif
 
+	color *location = frame_pos(frame, y, x);
+	for (uint32_t _y = 0; _y < sprite->heigth; _y++)
+		for (uint32_t _x = 0; _x < sprite->width; _x++)
+			location[_y*frame.skip+_x] = sprite->content[_y*(sprite->width)+_x];
+}
 

fba.h

@@ -32,6 +32,11 @@ typedef struct {
 typedef uint32_t color;
 #define COL(R, G, B) (color)( (R<<16) + (G<<8) + B )
 
+struct sprite {
+	uint32_t width;
+	uint32_t heigth;
+	color *content;
+};
 
 struct frame {
 	color* fbmem;

maths.h

@@ -10,9 +10,10 @@ long double lerp(
 	return a * (1-p) + (b*p);
 }
 
-color* frame_pos ( struct frame jar, int y, int x ) {
-	return jar.fbmem + (y+jar.yoff)*jar.skip + (jar.xoff+x);
-}
+#define frame_pos(frame, y, x) (frame.fbmem + (y+frame.yoff)*frame.skip + (frame.xoff+x))
+//color* frame_pos ( struct frame jar, int y, int x ) {
+//	return jar.fbmem + (y+jar.yoff)*jar.skip + (jar.xoff+x);
+//}
 
 bool in_frame(struct frame jar, int y, int x) {
 	return ( (unsigned)y < jar.rows && (unsigned)x < jar.cols );

test.c

@@ -1,6 +1,7 @@
 #include "fba.h"
 #include <stdio.h>
 #include <unistd.h>
+#include <string.h>
 
 #ifndef __useconds_t
 #define __useconds_t unsigned int
@@ -14,16 +15,47 @@ int fsleep (long double t) {
 	return usleep((int) lroundl(1000000.0 * t));
 }
 
+void sprite_deloc(struct sprite *sprite) {
+	free(sprite->content);
+	free(sprite);
+}
+
+struct sprite *sprite_read(char *filename) {
+	struct sprite *sprite = malloc(sizeof(*sprite));
+	int fd = open(filename, O_RDONLY);
+	assert(read(fd,
+		(uint32_t*)sprite,
+		sizeof(uint32_t)*2)
+	);
+	color *content_buffer = calloc(
+		sprite->width * sprite->heigth,
+		sizeof(color)
+	);
+	assert(read(fd, content_buffer,
+		sizeof(color) * sprite->width * sprite->heigth
+	));
+	sprite->content = content_buffer;
+	close(fd);
+	return sprite;
+}
+
 int main() {
 	struct frame frame = InitFb();
 
-	for (int r = 1; r<100; r++) {
-		fill_circle(frame,
-			100, 100, r,
-			0xa0a0a0
-		);
-		fsleep(.3);
-	}
+	struct sprite *sprite = sprite_read("a.font");
+
+	sprite_draw(frame, 100, 100, sprite);
+
+	sprite_deloc(sprite);
+
+// growing ball
+//	for (int r = 1; r<100; r++) {
+//		fill_circle(frame,
+//			100, 100, r,
+//			0xa0a0a0
+//		);
+//		fsleep(.3);
+//	}
 
 //	draw_free_line(
 //		frame, 100, 100,