Add lerp function.

src/display.c

@@ -62,7 +62,7 @@ inline int display_init(void)
         return EXIT_FAILURE;
     }
 
-    if(!SDL_SetDefaultTextureScaleMode(renderer, SDL_SCALEMODE_PIXELART))
+    if(!SDL_SetDefaultTextureScaleMode(renderer, SDL_SCALEMODE_NEAREST))
     {
         error_printf("Failed to set default texture scale mode : %s", SDL_GetError());
         return EXIT_FAILURE;
@@ -133,13 +133,12 @@ inline void display_update(void)
 #endif // DEBUG >= 1
 }
 
-int display_draw_texture(texture_t *texture, rect_t *src_rect, rect_t *dst_rect, bool flip)
+int display_draw_texture(texture_t *texture, rect_t *src_rect, frect_t *dst_frect, bool flip)
 {
-    frect_t src_frect, dst_frect;
+    frect_t src_frect;
     rect_to_frect(src_rect, &src_frect);
-    rect_to_frect(dst_rect, &dst_frect);
 
-    if(!SDL_RenderTextureRotated(renderer, texture, &src_frect, &dst_frect, 0, NULL, flip))
+    if(!SDL_RenderTextureRotated(renderer, texture, &src_frect, dst_frect, 0, NULL, flip))
     {
         error_printf("Failed to copy texture to renderer : %s", SDL_GetError());
         return EXIT_FAILURE;

src/ecs.c

@@ -91,7 +91,7 @@ component_t *entity_new_component(entity_t *entity, component_type_t component_t
 
     if(component->component_init(component)) return NULL;
 
-    if(linked_list_push_back(&entity->components, component_elem)) return NULL;
+    if(linked_list_push_front(&entity->components, component_elem)) return NULL;
 
     return component;
 }

src/headers/display.h

@@ -27,7 +27,7 @@ void display_exit(void);
 int display_clear(void);
 void display_update(void);
 
-int display_draw_texture(texture_t *texture, rect_t *src_rect, rect_t *dst_rect, bool flip);
+int display_draw_texture(texture_t *texture, rect_t *src_rect, frect_t *dst_frect, bool flip);
 int display_draw_frect(frect_t *frect, unsigned int r, unsigned int g, unsigned int b, unsigned int a);
 
 #endif // DISPLAY_H

src/headers/vector2d.h

@@ -131,4 +131,6 @@ void frect_to_rect(const frect_t *frect, rect_t *rect);
 */
 #define intersect_frect(A, B, result) SDL_IntersectFRect(A, B, result)
 
+float lerp(float a, float b, float t);
+
 #endif // VECTOR2D_H

src/vector2d.c

@@ -15,3 +15,8 @@ void frect_to_rect(const frect_t *frect, rect_t *rect)
     rect->w = (int)frect->w;
     rect->h = (int)frect->h;
 }
+
+float lerp(float a, float b, float t)
+{
+    return a * (1 - t) + b * t;
+}