aoauaou

game.c

@@ -9,20 +9,19 @@
 #include <math.h>
 #include "game.h"
 #include "SDL_prims.h"
+#include "SDL/SDL.h"
 
 SDL_Point
-get_hexagon_vertice(int faceno, int dist)
-{
+get_hexagon_vertice(int faceno, int dist) { //{{{
 	SDL_Point p1;
 
 	p1.x = dist * cos((M_PI/3)*faceno);
 	p1.y = dist * sin((M_PI/3)*faceno);
 
-	p1.x += SCREEN_WIDTH/2;
-	p1.y += SCREEN_HEIGHT/2;
+	OFFSET_POINT(p1);
 
 	return p1;
-}
+} //}}}
 void
 draw_hexagon_side(struct s_game *g, int faceno, int dist, int col) { //{{{
 	SDL_Point p1, p2, p3, p4;
@@ -36,40 +35,75 @@ draw_hexagon_side(struct s_game *g, int faceno, int dist, int col) { //{{{
 	SDL_FillPolygon(g->screen, points, 4, col);
 }//}}}
 void
-draw_hexagon(struct s_game *g) {
+draw_hexagon(struct s_game *g) { //{{{
 	int faces;
 
 #define DFT_COLOR 128
 	for(faces = 0; faces < SHAPE_HEXAGON; faces++) {
-		draw_hexagon_side(g, faces, 30, DFT_COLOR);
+		draw_hexagon_side(g, faces, 30, g->color);
 	}
+} //}}}
+
+
+SDL_Point
+get_circle_vertice(int angle, int dist)
+{
+	SDL_Point p;
+
+	p.x = cos((double)angle*2*M_PI/ANGLE_MAX) * dist;
+	p.y = sin((double)angle*2*M_PI/ANGLE_MAX) * dist;
+
+	OFFSET_POINT(p);
+
+	return p;
 }
-
 void
-init_game(struct s_game *g) {
+draw_cursor(struct s_game *g) {
+	SDL_Point p1, p2, p3;
 
-	g->polygon_type = SHAPE_HEXAGON;
-	g->cursor_angle = 0;
+	p1 = get_circle_vertice(g->cursor_angle, CURSOR_DIST+10);
+	p2 = get_circle_vertice(g->cursor_angle-TO_DEG(8), CURSOR_DIST);
+	p3 = get_circle_vertice(g->cursor_angle+TO_DEG(8), CURSOR_DIST);
 
+	SDL_Point pts[3] = {p1, p2, p3};
+
+	SDL_FillPolygon(g->screen, pts, 3, g->color);
 }
 
 void
 draw_game(struct s_game *g) {
 
-
 	switch(g->polygon_type) {
 	case SHAPE_HEXAGON:
 		draw_hexagon(g);
 		break;
 	}
-	/*
-	SDL_Point p1, p2, p3;
 
-	p1.x = 10; p1.y = 10;
-	p2.x = 10; p2.y = 20;
-	p3.x = 40; p3.y = 40;
-	SDL_Point points[3] = {p1, p2, p3} ;
-	SDL_FillPolygon(g->screen, points, 3, 0xffff0000);
-	*/
+	draw_cursor(g);
 }
 
+
+void
+get_keys(struct s_game *g) {
+	SDL_PumpEvents();
+	if(g->keys[SDL_QUIT])
+		exit(0);
+	if(g->keys[SDLK_q])
+		exit(0);
+
+	if(g->keys[SDLK_LEFT])
+		g->cursor_angle -= 5;
+	if(g->keys[SDLK_RIGHT])
+		g->cursor_angle += 5;
+
+	g->cursor_angle %= ANGLE_MAX;
+}
+
+
+void
+init_game(struct s_game *g) { //{{{
+	g->polygon_type = SHAPE_HEXAGON;
+	g->cursor_angle = TO_DEG(90);
+	g->color = 128;
+	g->keys = SDL_GetKeyState(NULL);
+} //}}}

game.h

@@ -18,16 +18,20 @@
 #define SHAPE_HEXAGON 6
 
 #define SHAPE_THICK 5
+#define CURSOR_DIST 40
+#define ANGLE_MAX 3600
 
+#define OFFSET_POINT(p) {p.x += SCREEN_WIDTH/2; p.y += SCREEN_HEIGHT/2;}
+#define TO_DEG(x) (x*ANGLE_MAX/360)
 
 struct s_game {
 	#define CURSOR_POS_MAX 255
 	int cursor_angle; //relative to the polygon center's referential
-
 	int polygon_type; //Shape
-
+	int color;
 
 	SDL_Surface *screen;
+	Uint8 *keys;
 
 
 };

main.c

@@ -6,6 +6,7 @@
 
 #include <stdio.h>
 #include <stdlib.h>
+#include "SDL/SDL.h"
 #include "game.h"
 #include "sdl.h"
 
@@ -21,6 +22,8 @@ main(int argc, char *argv[])
 
 
 	while(1) {
+		SDL_FillRect(ga.screen, NULL, 0);
+		get_keys(&ga);
 		draw_game(&ga);
 		SDL_Flip(ga.screen);
 		//get key