From 8486c2e37560a25c81556eb8048eed850bd46f92 Mon Sep 17 00:00:00 2001
From: Scott Duensing <scott@kangaroopunch.com>
Date: Wed, 10 Jan 2024 20:44:16 -0600
Subject: [PATCH] Sprite support.

---
 f256lib/f256.c   |  3 +++
 f256lib/f256.h   |  1 +
 f256lib/sprite.c | 59 ++++++++++++++++++++++++++++++++++++++++++++++++
 f256lib/sprite.h | 48 +++++++++++++++++++++++++++++++++++++++
 f256lib/tile.c   |  8 +++++++
 f256lib/tile.h   |  1 +
 6 files changed, 120 insertions(+)
 create mode 100644 f256lib/sprite.c
 create mode 100644 f256lib/sprite.h

diff --git a/f256lib/f256.c b/f256lib/f256.c
index 4115ef3..11bebec 100644
--- a/f256lib/f256.c
+++ b/f256lib/f256.c
@@ -31,6 +31,7 @@
 #include "bitmap.c"
 #include "tile.c"
 #include "graphics.c"
+#include "sprite.c"
 
 
 void f256Init(void) {
@@ -58,4 +59,6 @@ void f256Init(void) {
 	graphicsReset();
 	textReset();
 	bitmapReset();
+	tileReset();
+	spriteReset();
 }
diff --git a/f256lib/f256.h b/f256lib/f256.h
index a559c4e..17a416f 100644
--- a/f256lib/f256.h
+++ b/f256lib/f256.h
@@ -112,6 +112,7 @@ void     f256Init(void);
 #include "bitmap.h"
 #include "tile.h"
 #include "graphics.h"
+#include "sprite.h"
 
 
 #ifdef __cplusplus
diff --git a/f256lib/sprite.c b/f256lib/sprite.c
new file mode 100644
index 0000000..5dba3d7
--- /dev/null
+++ b/f256lib/sprite.c
@@ -0,0 +1,59 @@
+/*
+ *	Copyright (c) 2024 Scott Duensing, scott@kangaroopunch.com
+ *
+ *	Permission is hereby granted, free of charge, to any person obtaining a copy
+ *	of this software and associated documentation files (the "Software"), to deal
+ *	in the Software without restriction, including without limitation the rights
+ *	to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ *	copies of the Software, and to permit persons to whom the Software is
+ *	furnished to do so, subject to the following conditions:
+ *
+ *	The above copyright notice and this permission notice shall be included in
+ *	all copies or substantial portions of the Software.
+ *
+ *	THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ *	IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ *	FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ *	AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ *	LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ *	OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ *	SOFTWARE.
+ */
+
+
+#include "sprite.h"
+
+
+#define OFF_SPR_ADL_L    1
+#define OFF_SPR_POS_X_L  4
+#define OFF_SPR_POS_Y_L  6
+
+
+void spriteDefine(byte s, uint32_t address, byte size, byte CLUT, byte layer) {
+	uint16_t sprite = VKY_SP0_CTRL + (s << 3);
+
+	POKE(sprite, (size << 5) | (layer << 3) | (CLUT << 1));
+	POKEA(sprite + OFF_SPR_ADL_L, address);
+}
+
+
+void spriteSetPosition(byte s, uint16_t x, uint16_t y) {
+	uint16_t sprite = VKY_SP0_CTRL + (s << 3);
+
+	POKEW(sprite + OFF_SPR_POS_X_L, x);
+	POKEW(sprite + OFF_SPR_POS_Y_L, y);
+}
+
+
+void spriteSetVisible(byte s, bool v) {
+	uint16_t sprite = VKY_SP0_CTRL + (s << 3);
+
+	POKE(sprite, (PEEK(sprite) & 0xfe) | v);
+}
+
+
+void spriteReset(void) {
+	byte x;
+	// Hide all sprites.
+	for (x=0; x<64; x++) spriteSetVisible(x, false);
+}
diff --git a/f256lib/sprite.h b/f256lib/sprite.h
new file mode 100644
index 0000000..a9137b7
--- /dev/null
+++ b/f256lib/sprite.h
@@ -0,0 +1,48 @@
+/*
+ *	Copyright (c) 2024 Scott Duensing, scott@kangaroopunch.com
+ *
+ *	Permission is hereby granted, free of charge, to any person obtaining a copy
+ *	of this software and associated documentation files (the "Software"), to deal
+ *	in the Software without restriction, including without limitation the rights
+ *	to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ *	copies of the Software, and to permit persons to whom the Software is
+ *	furnished to do so, subject to the following conditions:
+ *
+ *	The above copyright notice and this permission notice shall be included in
+ *	all copies or substantial portions of the Software.
+ *
+ *	THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ *	IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ *	FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ *	AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ *	LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ *	OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ *	SOFTWARE.
+ */
+
+
+#ifndef SPRITE_H
+#define SPRITE_H
+
+
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+
+
+#include "f256.h"
+
+
+void spriteDefine(byte s, uint32_t address, byte size, byte CLUT, byte layer);
+void spriteSetPosition(byte s, uint16_t x, uint16_t y);
+void spriteSetVisible(byte s, bool v);
+void spriteReset(void);
+
+
+#ifdef __cplusplus
+}
+#endif
+
+
+#endif // SPRITE_H
diff --git a/f256lib/tile.c b/f256lib/tile.c
index b99d82c..cb9b3db 100644
--- a/f256lib/tile.c
+++ b/f256lib/tile.c
@@ -123,3 +123,11 @@ void tileSetVisible(byte t, bool v) {
 			break;
 	}
 }
+
+
+void tileReset(void) {
+	// Hide all tilemaps.
+	tileSetVisible(0, false);
+	tileSetVisible(1, false);
+	tileSetVisible(2, false);
+}
diff --git a/f256lib/tile.h b/f256lib/tile.h
index 5015f18..4cdd057 100644
--- a/f256lib/tile.h
+++ b/f256lib/tile.h
@@ -38,6 +38,7 @@ void tileDefineTileMap(byte t, uint32_t address, byte tileSize, uint16_t mapSize
 void tileDefineTileSet(byte t, uint32_t address, bool square);
 void tileSetScroll(byte t, byte xPixels, uint16_t xTiles, byte yPixels, uint16_t yTiles);
 void tileSetVisible(byte t, bool v);
+void tileReset(void);
 
 
 #ifdef __cplusplus