From 48cef82988d6209987ae27fe29b72d7d5e402b3c Mon Sep 17 00:00:00 2001
From: 3gg <3gg@shellblade.net>
Date: Wed, 19 Jul 2023 08:35:00 -0700
Subject: Add sprites.

---
 gfx-iso/include/isogfx/isogfx.h | 35 +++++++++++++++++++++++++++++++++--
 1 file changed, 33 insertions(+), 2 deletions(-)

(limited to 'gfx-iso/include/isogfx/isogfx.h')

diff --git a/gfx-iso/include/isogfx/isogfx.h b/gfx-iso/include/isogfx/isogfx.h
index 6b7ce8e..e96606c 100644
--- a/gfx-iso/include/isogfx/isogfx.h
+++ b/gfx-iso/include/isogfx/isogfx.h
@@ -8,6 +8,12 @@
 
 typedef struct IsoGfx IsoGfx;
 
+/// Sprite sheet handle.
+typedef uint16_t SpriteSheet;
+
+/// Sprite handle.
+typedef uint16_t Sprite;
+
 /// Tile handle.
 typedef uint16_t Tile;
 
@@ -48,8 +54,10 @@ typedef struct WorldDesc {
 } WorldDesc;
 
 typedef struct IsoGfxDesc {
-  int screen_width;  /// Screen width in pixels.
-  int screen_height; /// Screen height in pixels.
+  int screen_width;                 /// Screen width in pixels.
+  int screen_height;                /// Screen height in pixels.
+  int max_num_sprites;              /// 0 for an implementation-defined default.
+  int sprite_sheet_pool_size_bytes; /// 0 for an implementation-defined default.
 } IsoGfxDesc;
 
 /// Create a new isometric graphics engine.
@@ -79,6 +87,29 @@ void isogfx_set_tile(IsoGfx*, int x, int y, Tile);
 /// Set the tiles in positions in the range (x0,y0) - (x1,y1).
 void isogfx_set_tiles(IsoGfx*, int x0, int y0, int x1, int y1, Tile);
 
+/// Load a sprite sheet (.SS) file.
+bool isogfx_load_sprite_sheet(IsoGfx*, const char* filepath, SpriteSheet*);
+
+/// Create an animated sprite.
+Sprite isogfx_make_sprite(IsoGfx*, SpriteSheet);
+
+/// Destroy the sprite.
+void isogfx_del_sprite(IsoGfx*, Sprite);
+
+/// Destroy all the sprites.
+void isogfx_del_sprites(IsoGfx*);
+
+/// Set the sprite's position.
+void isogfx_set_sprite_position(IsoGfx*, Sprite, int x, int y);
+
+/// Set the sprite's current animation.
+void isogfx_set_sprite_animation(IsoGfx*, Sprite, int animation);
+
+/// Update the renderer.
+///
+/// Currently this updates the sprite animations.
+void isogfx_update(IsoGfx*, double t);
+
 /// Render the world.
 void isogfx_render(IsoGfx*);
 
-- 
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