# HG changeset patch
# User John Tsiombikas <nuclear@member.fsf.org>
# Date 1435784499 -10800
# Node ID c3fbf9616dbdebeaff015b6eab7beeddbff77f1b
# Parent  111c1a9bca2915e13ebe869bac2672884a1df242
slot bounds, and ray testing

diff -r 111c1a9bca29 -r c3fbf9616dbd src/board.cc
--- a/src/board.cc	Mon Jun 29 21:55:36 2015 +0300
+++ b/src/board.cc	Thu Jul 02 00:01:39 2015 +0300
@@ -19,6 +19,8 @@
 #define PIECE_RAD		(0.45 * HSIZE / 5.0)
 #define BOARD_OFFSET	(HSIZE / 2.0 + WALL_THICKNESS + HINGE_RAD * 0.25)
 #define PIECES_PER_LAYER	5
+#define SLOT_WIDTH		(HSIZE / 5.0)
+#define SLOT_HEIGHT		(VSIZE * 0.4)
 
 
 static const vec2_t piece_cp[] = {
@@ -66,11 +68,37 @@
 	}
 }
 
+Quad::Quad()
+{
+}
+
+Quad::Quad(const Vector3 &v0, const Vector3 &v1, const Vector3 &v2, const Vector3 &v3)
+	: tri0(v0, v1, v2), tri1(v0, v2, v3)
+{
+}
+
+bool Quad::intersect(const Ray &ray, HitPoint *hit) const
+{
+	return tri0.intersect(ray, hit) || tri1.intersect(ray, hit);
+}
 
 Board::Board()
 {
 	piece_obj = 0;
 	clear();
+
+	for(int i=0; i<NUM_SLOTS; i++) {
+		Vector3 p = piece_pos(i, 0);
+		bool top_side = i >= NUM_SLOTS / 2;
+
+		float z0 = top_side ? -PIECE_RAD : PIECE_RAD;
+		float z1 = top_side ? SLOT_HEIGHT : -SLOT_HEIGHT;
+
+		slotbb[i] = Quad(p + Vector3(-SLOT_WIDTH / 2.0, 0, z0),
+				p + Vector3(SLOT_WIDTH / 2.0, 0, z0),
+				p + Vector3(SLOT_WIDTH / 2.0, 0, z1),
+				p + Vector3(-SLOT_WIDTH / 2.0, 0, z1));
+	}
 }
 
 Board::~Board()
@@ -163,13 +191,23 @@
 	pos.y = (layer + 0.5) * PIECE_HEIGHT;
 
 	pos.z = (-VSIZE * 0.5 + PIECE_RAD + PIECE_RAD * 2.0 * layer_level);
-	if(top_side) {
+	if(!top_side) {
 		pos.z = -pos.z;
 	}
 
 	return pos;
 }
 
+int Board::slot_hit(const Ray &ray) const
+{
+	for(int i=0; i<NUM_SLOTS; i++) {
+		if(slotbb[i].intersect(ray)) {
+			return i;
+		}
+	}
+	return -1;
+}
+
 void Board::draw() const
 {
 	bool use_shadows = opt.shadows && sdr_shadow;
@@ -193,6 +231,40 @@
 		piece_obj->set_shader(piece_sdr);
 		piece_obj->draw();
 	}
+
+	// draw the slot bounds
+	/*
+	static const float pal[][3] = {
+		{1, 0, 0},
+		{0, 1, 0},
+		{0, 0, 1},
+		{1, 1, 0},
+		{0, 1, 1},
+		{1, 0, 1}
+	};
+	int idx = dbg_int % NUM_SLOTS;
+	if(idx >= 0) {
+		glUseProgram(0);
+
+		glPushAttrib(GL_ENABLE_BIT);
+		glDisable(GL_LIGHTING);
+		glDisable(GL_CULL_FACE);
+		glDisable(GL_DEPTH_TEST);
+
+		glBegin(GL_TRIANGLES);
+		glColor3fv(pal[idx % (sizeof pal / sizeof *pal)]);
+		glVertex3f(slotbb[idx].tri0.v[0].x, slotbb[idx].tri0.v[0].y, slotbb[idx].tri0.v[0].z);
+		glVertex3f(slotbb[idx].tri0.v[1].x, slotbb[idx].tri0.v[1].y, slotbb[idx].tri0.v[1].z);
+		glVertex3f(slotbb[idx].tri0.v[2].x, slotbb[idx].tri0.v[2].y, slotbb[idx].tri0.v[2].z);
+		glVertex3f(slotbb[idx].tri1.v[0].x, slotbb[idx].tri1.v[0].y, slotbb[idx].tri1.v[0].z);
+		glVertex3f(slotbb[idx].tri1.v[1].x, slotbb[idx].tri1.v[1].y, slotbb[idx].tri1.v[1].z);
+		glVertex3f(slotbb[idx].tri1.v[2].x, slotbb[idx].tri1.v[2].y, slotbb[idx].tri1.v[2].z);
+		glEnd();
+
+		glPopAttrib();
+	}
+	*/
+	// TODO slot highlighting
 }
 
 
diff -r 111c1a9bca29 -r c3fbf9616dbd src/board.h
--- a/src/board.h	Mon Jun 29 21:55:36 2015 +0300
+++ b/src/board.h	Thu Jul 02 00:01:39 2015 +0300
@@ -3,6 +3,7 @@
 
 #include <vector>
 #include "object.h"
+#include "mesh.h"
 #include "image.h"
 
 #define NUM_SLOTS		20
@@ -24,11 +25,22 @@
 	void move_to(int slot, int level, bool anim = true);
 };
 
+// for slot bounds
+class Quad {
+public:
+	Triangle tri0, tri1;
+
+	Quad();
+	Quad(const Vector3 &v0, const Vector3 &v1, const Vector3 &v2, const Vector3 &v3);
+
+	bool intersect(const Ray &ray, HitPoint *hit = 0) const;
+};
 
 class Board {
 private:
 	Piece pieces[MAX_PIECES];
 	int hist[NUM_SLOTS + 1];
+	Quad slotbb[NUM_SLOTS];
 
 	std::vector<Object*> obj;
 	Object *piece_obj;
@@ -53,6 +65,8 @@
 
 	Vector3 piece_pos(int slot, int level = 0) const;
 
+	int slot_hit(const Ray &ray) const;
+
 	void draw() const;
 };
 
diff -r 111c1a9bca29 -r c3fbf9616dbd src/game.cc
--- a/src/game.cc	Mon Jun 29 21:55:36 2015 +0300
+++ b/src/game.cc	Thu Jul 02 00:01:39 2015 +0300
@@ -17,6 +17,7 @@
 unsigned int sdr_shadow, sdr_shadow_notex;
 unsigned int sdr_unlit;
 bool wireframe;
+int dbg_int;
 
 static Board board;
 
@@ -252,6 +253,18 @@
 			opt.shadows = !opt.shadows;
 			redisplay();
 			break;
+
+		case '=':
+			dbg_int++;
+			printf("dbg_int: %d\n", dbg_int);
+			redisplay();
+			break;
+
+		case '-':
+			dbg_int--;
+			printf("dbg_int: %d\n", dbg_int);
+			redisplay();
+			break;
 		}
 	}
 }
diff -r 111c1a9bca29 -r c3fbf9616dbd src/game.h
--- a/src/game.h	Mon Jun 29 21:55:36 2015 +0300
+++ b/src/game.h	Thu Jul 02 00:01:39 2015 +0300
@@ -8,6 +8,7 @@
 extern unsigned long cur_time;
 
 extern bool wireframe;
+extern int dbg_int;
 
 bool game_init();
 void game_cleanup();