1 files changed, 73 insertions, 0 deletions
diff --git a/include/playerObject.h b/include/playerObject.h
new file mode 100644
index 0000000..9394c4f
--- /dev/null
+++ b/include/playerObject.h
@@ -0,0 +1,73 @@
+#include "types.h"
+#include "point.h"
+#include "velocity.h"
+#include "toolbox.h"
+#include "fixed.h"
+
+#ifndef PLAYEROBJECT_H
+#define PLAYEROBJECT_H
+
+#define GRAVITY 0.75
+
+typedef struct playerObject {
+	VELOCITY vel;
+	POINT pt;
+	u32 rotation; // Rotation amount
+	OBJ_ATTR *obj; // Attributes of the object for GBA
+	int pallete_bank; // Index of pallete
+	int tile_id; // Index of player tile
+	int isJumping;
+} ALIGN(4) playerObject; // Word-align to ensure corruption doesn't occur
+
+static inline void initializePlayerObject (playerObject *object) {
+	// Initialize the point and velocity of an object
+	object->vel = createVelocity(0, 0);
+	object->pt = createPoint(20 << FIX_SHIFT, 100 << FIX_SHIFT);
+}
+
+static inline playerObject createPlayerObject (OBJ_ATTR *obj_buffer, int pallete_bank, int tile_id) {
+	// Create a player object from data
+	playerObject temp;
+	initializePlayerObject(&temp);
+	temp.rotation = 0;
+	temp.obj = obj_buffer;
+	temp.pallete_bank = pallete_bank;
+	temp.tile_id = tile_id;
+	temp.isJumping = 0;
+	obj_set_attr(temp.obj,
+			ATTR0_SQUARE, // Set attribute 1 to be a square
+			ATTR1_SIZE_16, // Set size to 16 x 16
+			ATTR2_PALBANK(pallete_bank) | tile_id // Which pallete to use, as we are in 
+			// 16-color mode
+	);
+	obj_set_pos(temp.obj, temp.pt.x >> FIX_SHIFT, temp.pt.y >> FIX_SHIFT);
+	return temp;
+}
+
+static inline void applyGravity (playerObject *object) {
+	// Apply a gravity constant to a player
+	object->vel.dy += float_to_fixed(GRAVITY);
+	// This is a weird convention to have gravity in the positive direction,
+	// but I don't want to deal with coordinate changing. Too lazy
+}
+
+static inline void updatePlayer (playerObject *object, u32 GROUND_LEVEL) {
+	// Update the position of a player object
+	updatePoint(&object->pt, &object->vel);
+	if (object->pt.y >> FIX_SHIFT >= GROUND_LEVEL) {
+		// Only apply gravity if player is not touching the ground
+		object->isJumping = 0;
+		object->pt.y = GROUND_LEVEL << FIX_SHIFT; // Don't go through ground
+		object->vel.dy = 0;
+	}
+	else {
+		object->isJumping = 1;
+		applyGravity(object);
+	}
+	// Update the player object's attributes' position
+	obj_set_pos(object->obj, object->pt.x >> FIX_SHIFT, object->pt.y >> FIX_SHIFT);
+	// Update the player's second attribute (tile and pallete bank)
+	object->obj->attr2 = ATTR2_BUILD(object->tile_id, object->pallete_bank, 0);
+}
+
+#endif // PLAYEROBJECT_H