moved grid stuff from rocks.c to sprite.c

[vor.git] / sprite.h

diff --git a/sprite.h b/sprite.h
index 7df8631..4c0cefd 100644 (file)
--- a/sprite.h
+++ b/sprite.h
@@ -1,5 +1,5 @@
-#ifndef VOR_SHAPE_H
-#define VOR_SHAPE_H
+#ifndef VOR_SPRITE_H
+#define VOR_SPRITE_H
 
 #include <SDL.h>
 #include <inttypes.h>
@@ -11,9 +11,10 @@ typedef struct sprite Sprite;
 #define BASE_SPRITE 0
 #define SHIP_SPRITE 1
 #define ROCK_SPRITE 2
+#define N_TYPES 3
 
 struct sprite {
-       uint8_t type;
+       int8_t type;
        Sprite *next;
        float x, y;
        float dx, dy;
@@ -23,17 +24,23 @@ struct sprite {
        uint32_t *mask;
 };
 
-void get_shape(Sprite *s);
-int collide(Sprite *r, Sprite *s);
-int pixel_collide(Sprite *s, int x, int y);
+Sprite *free_sprites[N_TYPES];  // lists of free sprites, by type.
 
+void init_sprites(void);
+void add_sprite(Sprite *s);
+void move_sprite(Sprite *s);
+void move_sprites(void);
+
+int collides(Sprite *s);
+int pixel_collides(float x, float y);
+void load_sprite(Sprite *sprite, char *filename);
 
 
 // extended sprites
 
 struct ship {
        // core sprite fields
-       uint8_t sprite_type;
+       int8_t sprite_type;
        struct ship *next;
        float x, y;
        float dx, dy;
@@ -48,7 +55,7 @@ struct ship {
 
 struct rock {
        // core sprite fields
-       uint8_t sprite_type;
+       int8_t sprite_type;
        struct rock *next;
        float x, y;
        float dx, dy;
@@ -60,7 +67,32 @@ struct rock {
        int type;
 };
 
-SDL_Surface *load_image(char *filename);
-void load_sprite(Sprite *sprite, char *filename);
 
-#endif // VOR_SHAPE_H
+
+static inline void
+insert_sprite(Sprite **head, Sprite *s)
+{
+       s->next = *head;
+       *head = s;
+}
+
+
+static inline Sprite *
+remove_sprite(Sprite **head)
+{
+       Sprite *s = *head;
+       *head = s->next;
+       return s;
+}
+
+
+static inline void
+draw_sprite(Sprite *s)
+{
+       SDL_Rect dest;
+       if(s->type == NONE) return;
+       dest.x = s->x; dest.y = s->y;
+       SDL_BlitSurface(s->image, NULL, surf_screen, &dest);
+}
+
+#endif // VOR_SPRITE_H