From 2202e87c466803eeaddd974006aa9950d8e0d067 Mon Sep 17 00:00:00 2001
From: Syndamia <kamen@syndamia.com>
Date: Sun, 15 Mar 2026 12:23:21 +0200
Subject: feat!: Split into separate files

---
 Animation.c | 110 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 110 insertions(+)
 create mode 100644 Animation.c

(limited to 'Animation.c')

diff --git a/Animation.c b/Animation.c
new file mode 100644
index 0000000..3ce79dc
--- /dev/null
+++ b/Animation.c
@@ -0,0 +1,110 @@
+#include "Animation.h"
+#include <stdlib.h>
+
+struct AnimationEventNode {
+	AnimationEventNode* next;
+
+	u32 startFrame;
+	u32 endFrame;
+	PixelRenderer renderCallback;
+	void* privateData;
+};
+
+AnimationEventNode*
+AnimationEventNode_new(u32 startFrame, u32 endFrame, PixelRenderer renderCallback, void* privateData) {
+	AnimationEventNode* aen = (AnimationEventNode*)malloc(sizeof(AnimationEventNode));
+	aen->next = NULL;
+	aen->startFrame = startFrame;
+	aen->endFrame = endFrame;
+	aen->renderCallback = renderCallback;
+	aen->privateData = privateData;
+
+	return aen;
+}
+
+Animation
+Animation_new(u32 width, u32 height, u32 frameCount) {
+	return (Animation){
+		.width       = width,
+		.height      = height,
+		.frameCount  = frameCount,
+		.duplicateFrames = 0,
+		.frameBuffer = RGBImage_new(width, height),
+		.events      = NULL,
+	};
+}
+
+void
+Animation_free(Animation anim) {
+	RGBImage_free(anim.frameBuffer);
+	while (anim.events != NULL) {
+		AnimationEventNode* toFree = anim.events;
+		anim.events = anim.events->next;
+		free(toFree);
+	}
+}
+
+void
+Animation_delete(Animation* anim) {
+	Animation_free(*anim);
+	anim->width = anim->height = anim->frameCount = 0;
+	RGBImage_delete(&anim->frameBuffer);
+}
+
+void
+Animation_pushEvent(Animation* anim, u32 startFrame, u32 endFrame, PixelRenderer renderer, void* privateData) {
+	if (anim->events == NULL) {
+		anim->events = AnimationEventNode_new(startFrame, endFrame, renderer, privateData);
+		return;
+	}
+
+	AnimationEventNode* prevNode = NULL, *currNode = anim->events;
+	while (currNode != NULL) {
+		if (startFrame < currNode->startFrame) {
+			prevNode->next = AnimationEventNode_new(startFrame, endFrame, renderer, privateData);
+			prevNode->next->next = currNode;
+			return;
+		}
+
+		prevNode = currNode;
+		currNode = currNode->next;
+	}
+
+	prevNode->next = AnimationEventNode_new(startFrame, endFrame, renderer, privateData);
+}
+
+void
+Animation_render(Animation* anim) {
+	for (int currFrame = 0; currFrame < anim->frameCount; ++currFrame) {
+
+		if (anim->events != NULL)
+			for (i32 r = 0; r < anim->frameBuffer.width; ++r)
+			for (i32 c = 0; c < anim->frameBuffer.height; ++c) {
+				for (AnimationEventNode* aen = anim->events; aen != NULL && aen->startFrame <= currFrame; aen = aen->next) {
+					ARGB* pixel = RGBImage_at(anim->frameBuffer, r, c);
+					ARGB newPixel = aen->renderCallback(anim, currFrame, *pixel, r, c, aen->privateData);
+					ARGB_merge(pixel, newPixel);
+				}
+
+				AnimationEventNode* prevNode = NULL, *currNode = anim->events;
+				while (currNode != NULL && currNode->startFrame <= currFrame) {
+					if (currNode->endFrame <= currFrame) {
+						if (prevNode != NULL)
+							prevNode->next = currNode->next;
+						else
+							anim->events = NULL;
+						free(currNode);
+					}
+					else {
+						prevNode = currNode;
+						currNode = currNode->next;
+					}
+				}
+			}
+
+		ppm6_write(stdout, anim->frameBuffer);
+
+		for (u32 duplicates = 0; duplicates < anim->duplicateFrames; ++duplicates)
+			ppm6_write(stdout, anim->frameBuffer);
+	}
+}
-- 
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