Initial Commit

1 files changed, 41 insertions, 0 deletions

diff --git a/Week1-Pacman/src/animation.c b/Week1-Pacman/src/animation.c
new file mode 100644
index 0000000..40be24a
--- /dev/null
+++ b/Week1-Pacman/src/animation.c
@@ -0,0 +1,41 @@
+#include <assert.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include "animation.h"
+
+void init_animation(struct animation* animation,
+                    struct animation_init* init) {
+  int initial_frame_count = init->initial_frame_count;
+
+  if (initial_frame_count <= 0) {
+    fprintf(stderr, "All animations need to have at least 1 frame!\n");
+    exit(1);
+  }
+
+  animation->num_frames = initial_frame_count;
+
+  int size = initial_frame_count * sizeof(float);
+
+  animation->frame_times = malloc(size);
+  memcpy(animation->frame_times, init->initial_frame_times, size);
+
+  size = initial_frame_count * sizeof(SDL_Rect);
+
+  animation->frames = malloc(size);
+  memcpy(animation->frames, init->initial_frame_times, size);
+
+}
+
+void update_animation(struct animation* animation, float dt) {
+  int frame_index = animation->current_frame;
+  float current_frame_time = animation->frame_times[frame_index];
+
+  animation->current_time += dt;
+
+  if(animation->current_time >= current_frame_time) {
+    animation->current_time = 0;
+    animation->current_frame =
+      (frame_index + 1) % animation->num_frames;
+  }
+}