Moved a tonne of code around

src/dawn/display/spritebatch.h

@@ -0,0 +1,71 @@
+// Copyright (c) 2021 Dominic Masters
+// 
+// This software is released under the MIT License.
+// https://opensource.org/licenses/MIT
+
+#pragma once
+#include "../libs.h"
+#include "../util/math.h"
+#include "primitive/primitive.h"
+#include "primitive/quad.h"
+
+/** Definition of a Sprite Batch. */
+typedef struct {
+  /** Maximum sprites the batch can hold. */
+  int32_t maxSprites;
+
+  /** The current/next sprite index. */
+  int32_t currentSprite;
+
+  /** Internal primitive */
+  primitive_t primitive;
+} spritebatch_t;
+
+/**
+ * Creates a new Sprite Batch made of standard quads.
+ *
+ * @param batch Sprite batch to init.
+ * @param maxSprites The maxiumum number of sprites the batch can hold.
+ */
+void spriteBatchInit(spritebatch_t *batch, int32_t maxSprites);
+
+/**
+ * Renders a sprite onto a given Sprite Batch.
+ * 
+ * @param spriteBatch The sprite batch to render to.
+ * @param index The index within the sprite batch. Set to -1 to select "next".
+ * @param x X coordinate of the sprite.
+ * @param y Y coordinate of the sprite.
+ * @param width Width of the sprite.
+ * @param height Height of the sprite.
+ * @param u0 Texture U coordinate (min).
+ * @param v0 Texture V coordinate (min).
+ * @param u1 Texture U coordinate (max).
+ * @param v1 Texture V coordinate (max).
+ */
+void spriteBatchQuad(spritebatch_t *spriteBatch, int32_t index, 
+  float x, float y, float z, float width, float height,
+  float u0, float v0, float u1, float v1
+);
+
+/**
+ * Flushes a sprite batch to reset the indexes.
+ * @param spriteBatch The batch.
+ */
+void spriteBatchFlush(spritebatch_t *spriteBatch);
+
+/**
+ * Draws the Sprite Batch.
+ * 
+ * @param spriteBatch The sprite batch to render.
+ * @param start Start index to render from.
+ * @param count Count of sprites to render. Set to -1 to render to the current.
+ */
+void spriteBatchDraw(spritebatch_t *spriteBatch, int32_t start, int32_t count);
+
+/**
+ * Disposes a previously created Sprite Batch.
+ * 
+ * @param spriteBatch The sprite batch to dispose.
+ */
+void spriteBatchDispose(spritebatch_t *spriteBatch);