Add animation ffi hook

source/engine/font.c

@@ -18,6 +18,7 @@
 #include "stb_image_write.h"
 
 static uint32_t VBO = 0;
+static uint32_t VAO = 0;
 
 unsigned char ttf_buffer[1<<25];
 
@@ -30,6 +31,15 @@ void font_init(struct shader *textshader) {
     shader_use(shader);
 
     glGenBuffers(1, &VBO);
+    glGenVertexArrays(1, &VAO);
+
+    glBindVertexArray(VAO);
+
+    glBindBuffer(GL_ARRAY_BUFFER, VBO);
+    glEnableVertexAttribArray(0);
+    glVertexAttribPointer(0, 4, GL_FLOAT, GL_FALSE, 4 * sizeof(float), 0);
+
+    glBindVertexArray(0);
 
     // Default font
     //font = MakeFont("teenytinypixels.ttf", 30);
@@ -152,7 +162,8 @@ void renderText(const char *text, mfloat_t pos[2], float scale, mfloat_t color[3
     glBindTexture(GL_TEXTURE_2D, font->texID);
     glBindBuffer(GL_ARRAY_BUFFER, VBO);
     glBufferData(GL_ARRAY_BUFFER, len*16*sizeof(float), NULL, GL_STREAM_DRAW);
-    glVertexAttribPointer(0, 4, GL_FLOAT, GL_FALSE, 4 * sizeof(float), 0);
+
+    glBindVertexArray(VAO);
 
     const unsigned char *line, *wordstart;
     line = (unsigned char*)text;

source/engine/mrbffi.c

@@ -472,6 +472,20 @@ s7_pointer s7_anim(s7_scheme *sc, s7_pointer args) {
     free_anim(a);
 }
 
+s7_pointer s7_anim_cmd(s7_scheme *sc, s7_pointer args) {
+    int cmd = s7_integer(s7_car(args));
+    int body = s7_integer(s7_cadr(args));
+    s7_pointer sym = s7_caddr(args);
+
+    switch (cmd) {
+        case 0:
+            YughInfo("Playing animation called %s.", s7_symbol_name(sym));
+            break;
+    }
+
+    return args;
+}
+
 #define S7_FUNC(NAME, ARGS) s7_define_function(s7, #NAME, s7_ ##NAME, ARGS, 0, 0, "")
 
 void ffi_load() {
@@ -511,5 +525,6 @@ void ffi_load() {
     S7_FUNC(timer_cmd, 2);
 
     S7_FUNC(anim, 2);
+    S7_FUNC(anim_cmd, 3);
 }
 

source/engine/sprite.c

@@ -108,11 +108,18 @@ unsigned int incrementAnimFrame(unsigned int interval, struct sprite *sprite)
     return interval;
 }
 
+static uint32_t VAO = 0;
 
-// TODO: This should be done once for all sprites
 void sprite_initialize()
 {
     glGenBuffers(1, &VBO);
+    glGenVertexArrays(1, &VAO);
+
+    glBindVertexArray(VAO);
+
+    glBindBuffer(GL_ARRAY_BUFFER, VBO);
+    glVertexAttribPointer(0, 4, GL_FLOAT, GL_FALSE, 0, NULL);
+    glEnableVertexAttribArray(0);
 }
 
 
@@ -153,9 +160,11 @@ void tex_draw(struct Texture *tex, float pos[2], float angle, float size[2], flo
          };
 
          glBufferData(GL_ARRAY_BUFFER, sizeof(vertices), vertices, GL_STREAM_DRAW);
-	glVertexAttribPointer(0, 4, GL_FLOAT, GL_FALSE, 0, NULL);
 
+         glBindVertexArray(VAO);
 	glDrawArrays(GL_TRIANGLE_STRIP, 0, 4);
+
+	glBindVertexArray(0);
 }
 
 void sprite_draw(struct sprite *sprite)
@@ -179,31 +188,6 @@ void gui_draw_img(const char *img, float x, float y) {
     tex_draw(tex, pos, 0.f, size, offset, tex_get_rect(tex));
 }
 
-void spriteanim_draw(struct sprite *sprite)
-{
-    shader_use(animSpriteShader);
-
-    mfloat_t model[16] = { 0.f };
-    memcpy(model, UNITMAT4, sizeof(UNITMAT4));
-
-    mat4_translate_vec2(model, sprite->pos);
-    mfloat_t msize[2] =
-	{ sprite->size[0] * sprite->anim.dimensions[0],
-	  sprite->size[1] * sprite->anim.dimensions[1] };
-    mat4_scale_vec2(model, msize);
-
-    shader_setmat4(animSpriteShader, "model", model);
-    shader_setvec3(animSpriteShader, "spriteColor", sprite->color);
-    shader_setfloat(animSpriteShader, "frame", sprite->anim.frame);
-
-
-    glActiveTexture(GL_TEXTURE0);
-    glBindTexture(GL_TEXTURE_2D_ARRAY, sprite->tex->id);
-
-    glDrawArrays(GL_TRIANGLE_STRIP, 0, 4);
-}
-
-
 void video_draw(struct datastream *stream, mfloat_t position[2], mfloat_t size[2], float rotate, mfloat_t color[3])
 {
     shader_use(vid_shader);

source/engine/sprite.h

@@ -40,7 +40,6 @@ void sprite_loadanim(struct sprite *sprite, const char *path, struct Anim2D anim
 void sprite_settex(struct sprite *sprite, struct Texture *tex);
 void sprite_initialize();
 void sprite_draw(struct sprite *sprite);
-void spriteanim_draw(struct sprite *sprite);
 void video_draw(struct datastream *ds, mfloat_t pos[2], mfloat_t size[2], float rotate, mfloat_t color[3]);
 void sprite_draw_all();
 unsigned int incrementAnimFrame(unsigned int interval, struct sprite *sprite);

source/scripts/engine.scm

@@ -58,6 +58,9 @@
 (define (sound_stop sound) (sound_cmd sound 2))
 (define (sound_restart sound) (sound_cmd sound 3))
 
+(define-macro (anim_play anim)
+    `(anim_cmd 0 body ,anim))
+
 (define-macro (registertype type . expr)
     (let ((f (gensym)))
         `(begin