6 files changed, 155 insertions, 0 deletions
diff --git a/demo/source/chgcol.c b/demo/source/chgcol.c
new file mode 100644
index 0000000..cbd653e
--- /dev/null
+++ b/demo/source/chgcol.c
@@ -0,0 +1,17 @@
+#include <agbx-demo.h>
+
+#include <agbx/gfx.h>
+
+void agbxd_chgcol(agbxd_dat * _dat,agbx_i8 const _dir) {
+	constexpr agbx_i8 maxcol = 0x7u;
+	agbx_i8 col = _dat->col;
+	if (!_dir) {
+		if (!col) {col = maxcol;}
+		else      {--col;}
+	}
+	else {
+		if (col == maxcol) {col = 0x0u;}
+		else               {++col;}
+	}
+	_dat->col = col;
+}
diff --git a/demo/source/chkkeys.c b/demo/source/chkkeys.c
new file mode 100644
index 0000000..f117d09
--- /dev/null
+++ b/demo/source/chkkeys.c
@@ -0,0 +1,64 @@
+#include <agbx-demo.h>
+
+#include <agbx/key.h>
+#include <agbx/gfx.h>
+
+#define agbxd_chk(_key) \
+	curkey = _key; \
+	if (agbx_chkkey(keymap,_key))
+
+#define agbxd_wait() \
+	while (agbx_chkkey(agbx_getkeymap(),curkey)) {}
+
+agbxd_upd agbxd_chkkeys(agbxd_dat * _dat) {
+	agbxd_upd upd = {};
+	agbx_keymap const keymap = agbx_getkeymap();
+	agbx_key          curkey;
+	agbxd_chk(agbx_key_sel) {
+		upd.done = true;
+		upd.err  = true;
+		return upd;
+	}
+	agbxd_chk(agbx_key_start) {
+		upd.done = true;
+		return upd;
+	}
+	agbxd_chk(agbx_key_l) {
+		agbxd_chgcol(_dat,0x0u);
+		agbxd_wait();
+	}
+	agbxd_chk(agbx_key_r) {
+		agbxd_chgcol(_dat,0x1u);
+		agbxd_wait();
+	}
+	agbxd_chk(agbx_key_pade) {
+		if (_dat->pos.x != 0xEFu) {
+			upd.mv = true;
+			++_dat->pos.x;
+			agbxd_wait();
+		}
+	}
+	agbxd_chk(agbx_key_padn) {
+		if (_dat->pos.y != 0x0u) {
+			upd.mv = true;
+			--_dat->pos.y;
+			agbxd_wait();
+		}
+	}
+	agbxd_chk(agbx_key_pads) {
+		if (_dat->pos.y != 0x9Fu) {
+			upd.mv = true;
+			++_dat->pos.y;
+			agbxd_wait();
+		}
+	}
+	agbxd_chk(agbx_key_padw) {
+		if (_dat->pos.x != 0x0u) {
+			upd.mv = true;
+			--_dat->pos.x;
+			agbxd_wait();
+		}
+	}
+	agbxd_chk(agbx_key_a) {upd.drw = true;}
+	return upd;
+}
diff --git a/demo/source/initdat.c b/demo/source/initdat.c
new file mode 100644
index 0000000..c9bb7af
--- /dev/null
+++ b/demo/source/initdat.c
@@ -0,0 +1,10 @@
+#include <agbx-demo.h>
+
+#include <agbx/gfx.h>
+
+void agbxd_initdat(agbxd_dat * const _dat) {
+	_dat->col   = 0x2u;
+	_dat->pos.x = 0x0u;
+	_dat->pos.y = 0x0u;
+	_dat->vaddr = 0x600'0000u;
+}
diff --git a/demo/source/initgfx.c b/demo/source/initgfx.c
new file mode 100644
index 0000000..474d5cd
--- /dev/null
+++ b/demo/source/initgfx.c
@@ -0,0 +1,17 @@
+#include <agbx-demo.h>
+
+#include <agbx/gfx.h>
+
+void agbxd_initgfx(void) {
+	agbx_set10(0x500'0000u,0b0u);
+	agbx_set10(0x500'0002u,0b111111111111111u);
+	agbx_set10(0x500'0004u,0b11111u);
+	agbx_set10(0x500'0006u,0b1111111111u);
+	agbx_set10(0x500'0008u,0b1111100000u);
+	agbx_set10(0x500'000Au,0b111111111100000u);
+	agbx_set10(0x500'000Cu,0b111110000000000u);
+	agbx_set10(0x500'000Eu,0b111110000011111u);
+	agbx_set10(0x400'0000u,0x404u);
+	agbx_clrscrn4(0x600'0000u,0x0u);
+	agbx_clrscrn4(0x600'A000u,0x0u);
+}
diff --git a/demo/source/loop.c b/demo/source/loop.c
new file mode 100644
index 0000000..003ac61
--- /dev/null
+++ b/demo/source/loop.c
@@ -0,0 +1,29 @@
+#include <agbx-demo.h>
+
+#include <agbx/key.h>
+#include <agbx/gfx.h>
+
+bool agbxd_loop(agbxd_dat * const _dat) {
+	bool err = false;
+	_dat->prevcol = 0x0u;
+	agbx_plot4(_dat->vaddr,_dat->pos.x,_dat->pos.y,0x1u);
+	for (;;) {
+		_dat->prevpos = _dat->pos;
+		agbxd_upd const upd = agbxd_chkkeys(_dat);
+		if (upd.done) {
+			err = upd.err;
+			break;
+		}
+		agbx_vsync();
+		if (upd.drw) {
+			_dat->prevcol = _dat->col;
+			if (upd.mv) {agbx_plot4(_dat->vaddr,_dat->pos.x,_dat->pos.y,_dat->col);}
+		}
+		if (upd.mv) {
+			agbx_plot4(_dat->vaddr,_dat->prevpos.x,_dat->prevpos.y,_dat->prevcol);
+			_dat->prevcol = agbx_rd4(_dat->vaddr,_dat->pos.x,_dat->pos.y);
+			agbx_plot4(_dat->vaddr,_dat->pos.x,_dat->pos.y,0x1u);
+		}
+	}
+	return err;
+}
diff --git a/demo/source/main.c b/demo/source/main.c
new file mode 100644
index 0000000..fe75179
--- /dev/null
+++ b/demo/source/main.c
@@ -0,0 +1,18 @@
+#include <agbx-demo.h>
+
+#include <agbx/key.h>
+#include <agbx/gfx.h>
+
+agbx_err agbx_main(void) {
+	agbxd_dat dat;
+	agbxd_initdat(&dat);
+	agbxd_initgfx();
+	bool const err = agbxd_loop(&dat);
+	if (err) {
+		for (agbx_i10 px = 0x0u;px != 0x9600u;++px) {
+			agbx_setpx1(dat.vaddr,px,dat.col);
+			agbxd_chgcol(&dat,0x1u);
+		}
+	}
+	return err ? agbx_err_max : agbx_err_ok;
+}