X-Git-Url: https://jasonwoof.com/gitweb/?p=vor.git;a=blobdiff_plain;f=main.c;h=e3a0f8351da7158bb9e2fa5a7ae400a4288f6144;hp=94c8e9ab4df5fe834862616c16ac930903657e5e;hb=a726e74233c877dab3aca50e5b31e7652035ae30;hpb=038a8a4aaa54b7b60e7fbb6a0f988dd852fb8970

diff --git a/main.c b/main.c
index 94c8e9a..e3a0f83 100644
--- a/main.c
+++ b/main.c
@@ -19,7 +19,6 @@
  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
  */
 
-#include <argp.h>
 #include <math.h>
 #include <SDL.h>
 #include <SDL_image.h>
@@ -42,6 +41,10 @@
 #include "sprite.h"
 #include "sound.h"
 
+#ifdef WIN32
+#define SDL_SetAlpha(surf, flag, alpha)
+#endif
+
 // ************************************* VARS
 // SDL_Surface global variables
 SDL_Surface 
@@ -72,7 +75,7 @@ float screendx = SCREENDXMIN, screendy = 0.0;
 float back_dist;
 
 // all movement is based on t_frame.
-float t_frame;  // length of this frame (in ticks = 1/20th second)
+float t_frame;  // length of this frame (in ticks = 1/20th second)  adjusted for gamespeed
 int ms_frame;   // length of this frame (milliseconds)
 int ms_end;     // end of this frame (milliseconds)
 
@@ -100,10 +103,17 @@ enum states state = TITLE_PAGE;
 float state_timeout = 600.0;
 
 #define NSEQUENCE 3
-char *sequence[] = {
-	"Press SPACE for normal game",
-	"Or 'e' for easy game",
-	"http://jasonwoof.org/vor"
+char *msgs[2][3] = {
+	{
+		"Press SPACE for normal game",
+		"Press '1' for easy game",
+		"http://jasonwoof.org/vor"
+	},
+	{
+		"Press SPACE for easy game",
+		"Press '2' for normal game",
+		"http://jasonwoof.org/vor"
+	}
 };
 
 int bangdotlife, nbangdots;
@@ -128,22 +138,20 @@ init_engine_dots() {
 void
 new_bang_dots(int xbang, int ybang, int dx, int dy, SDL_Surface *s)
 {
-	int x,y,endcount;
-	uint16_t *pixel,c;
+	int i, n, x, y;
+	uint16_t *pixel, c;
 	uint32_t colorkey;
 	int row_inc;
-	double theta,r;
-	int begin_generate;
+	double theta, r;
 
-	begin_generate = SDL_GetTicks();
+	n = 24.0 * t_frame;
 	pixel = s->pixels;
 	row_inc = s->pitch/sizeof(uint16_t) - s->w;
 	colorkey = s->format->colorkey;
 
 	SDL_LockSurface(s);
 
-	endcount = 0;
-	while (endcount<3) {
+	for(i=0; i<n; i++) {
 		pixel = s->pixels;
 		for(y=0; y<s->h; y++) {
 			for(x = 0; x<s->w; x++) {
@@ -151,26 +159,21 @@ new_bang_dots(int xbang, int ybang, int dx, int dy, SDL_Surface *s)
 				if(c && c != colorkey) {
 					theta = frnd()*M_PI*2;
 					r = frnd(); r = 1 - r*r;
-					// r = 1 - frnd()*frnd();
 
 					bdot[bd2].dx = 45*r*cos(theta) + dx;
 					bdot[bd2].dy = 45*r*sin(theta) + dy;
 					bdot[bd2].x = x + xbang;
 					bdot[bd2].y = y + ybang;
-					bdot[bd2].c = 0;
+					bdot[bd2].c = (i < n-3) ? 0 : c;
 					bdot[bd2].life = 100;
 					bdot[bd2].decay = frnd()*3 + 1;
 					bdot[bd2].active = 1;
 
-					// Replace the last few bang dots with the pixels from the exploding object
-					if(endcount>0) bdot[bd2].c = c;
-
 					bd2 = (bd2+1) % MAXBANGDOTS;
 				}
 				pixel += row_inc;
 			}
 		}
-		if(SDL_GetTicks() - begin_generate > 7) endcount++;
 	}
 
 	SDL_UnlockSurface(s);
@@ -183,6 +186,7 @@ draw_bang_dots(SDL_Surface *s)
 	int first_i, last_i;
 	uint16_t *pixels, *pixel, c;
 	int row_inc = s->pitch/sizeof(uint16_t);
+	Sprite *hit;
 
 	pixels = (uint16_t *) s->pixels;
 	first_i = -1;
@@ -204,7 +208,14 @@ draw_bang_dots(SDL_Surface *s)
 		}
 
 		// check collisions
-		if(pixel_collides(bdot[i].x, bdot[i].y)) { bdot[i].active = 0; continue; }
+		if((hit = pixel_collides(bdot[i].x, bdot[i].y))) {
+			if(hit->type != SHIP) { // they shouldn't hit the ship, but they do
+				bdot[i].active = 0;
+				hit->dx += ENGINE_DOT_WEIGHT * bdot[i].life * bdot[i].dx / sprite_mass(hit);
+				hit->dy += ENGINE_DOT_WEIGHT * bdot[i].life * bdot[i].dy / sprite_mass(hit);
+				continue;
+			}
+		}
 
 		pixel = pixels + row_inc*(int)(bdot[i].y) + (int)(bdot[i].x);
 		if(bdot[i].c) c = bdot[i].c; else c = heatcolor[(int)(bdot[i].life)*3];
@@ -214,12 +225,15 @@ draw_bang_dots(SDL_Surface *s)
 
 
 void
-new_engine_dots(int n, int dir) {
+new_engine_dots(float time_span, int dir) {
 	int i;
+	int n = time_span * ENGINE_DOTS_PER_TIC;
 	float a, r;  // angle, random length
 	float dx, dy;
 	float hx, hy; // half ship width/height.
 	static const int s[4] = { 2, 1, 0, 1 };
+	float time;
+	float accelh, accelv, past_ship_dx, past_ship_dy;
 
 	hx = ship.image->w / 2;
 	hy = ship.image->h / 2;
@@ -232,18 +246,40 @@ new_engine_dots(int n, int dir) {
 			dy = r * -sin(a);  // screen y is "backwards".
 
 			dotptr->active = 1;
-			dotptr->x = ship.x + s[dir]*hx + (frnd()-0.5)*3;
-			dotptr->y = ship.y + s[(dir+1)&3]*hy + (frnd()-0.5)*3;
+
+			// dot was created at a random time during the time span
+			time = frnd() * time_span; // this is how long ago
+
+			// calculate how fast the ship was going when this engine dot was
+			// created (as if it had a smoothe accelleration). This is used in
+			// determining the velocity of the dots, but not their starting
+			// location.
+			accelh = ((ship.jets >> 2) & 1) - (ship.jets & 1);
+			accelh *= THRUSTER_STRENGTH * time;
+			past_ship_dx = ship.dx - accelh;
+			accelv = ((ship.jets >> 1) & 1) - ((ship.jets >> 3) & 1);
+			accelv *= THRUSTER_STRENGTH * time;
+			past_ship_dy = ship.dy - accelv;
+
+			// the starting position (not speed) of the dot is calculated as
+			// though the ship were traveling at a constant speed for this
+			// time_span.
+			dotptr->x = (ship.x - (ship.dx - screendx) * time) + s[dir]*hx;
+			dotptr->y = (ship.y - (ship.dy - screendy) * time) + s[(dir+1)&3]*hy;
 			if(dir&1) {
-				dotptr->dx = ship.dx + 2*dx;
-				dotptr->dy = ship.dy + 20*dy;
+				dotptr->dx = past_ship_dx + 2*dx;
+				dotptr->dy = past_ship_dy + 20*dy;
 				dotptr->life = 60 * fabs(dy);
 			} else {
-				dotptr->dx = ship.dx + 20*dx;
-				dotptr->dy = ship.dy + 2*dy;
+				dotptr->dx = past_ship_dx + 20*dx;
+				dotptr->dy = past_ship_dy + 2*dy;
 				dotptr->life = 60 * fabs(dx);
 			}
 
+			// move the dot as though it were created in the past
+			dotptr->x += (dotptr->dx - screendx) * time;
+			dotptr->y += (dotptr->dy - screendy) * time;
+
 			if(dotptr - edot < MAXENGINEDOTS-1) dotptr++;
 			else dotptr = edot;
 		}
@@ -251,6 +287,22 @@ new_engine_dots(int n, int dir) {
 }
 
 void
+move_engine_dots() {
+	int i;
+	for(i = 0; i<MAXENGINEDOTS; i++) {
+		if(!edot[i].active) {
+			continue;
+		}
+		edot[i].x += (edot[i].dx - screendx)*t_frame;
+		edot[i].y += (edot[i].dy - screendy)*t_frame;
+		edot[i].life -= t_frame*3;
+		if(edot[i].life < 0 || edot[i].x<0 || edot[i].x >= XSIZE || edot[i].y < 0 || edot[i].y >= YSIZE) {
+			edot[i].active = 0;
+		}
+	}
+}
+
+void
 draw_engine_dots(SDL_Surface *s) {
 	int i;
 	uint16_t c;
@@ -260,14 +312,7 @@ draw_engine_dots(SDL_Surface *s) {
 	Sprite *hit;
 
 	for(i = 0; i<MAXENGINEDOTS; i++) {
-		if(!edot[i].active) continue;
-		edot[i].x += (edot[i].dx - screendx)*t_frame;
-		edot[i].y += (edot[i].dy - screendy)*t_frame;
-		edot[i].life -= t_frame*3;
-		if(edot[i].life < 0
-				|| edot[i].x<0 || edot[i].x >= XSIZE
-				|| edot[i].y<0 || edot[i].y >= YSIZE) {
-			edot[i].active = 0;
+		if(!edot[i].active) {
 			continue;
 		}
 		// check collisions
@@ -289,10 +334,12 @@ void
 drawdots(SDL_Surface *s) {
 	int m;
 
-	// Create engine dots out the side we're moving from
+	move_engine_dots();
+
+	// Create engine dots
 	for(m = 0; m<4; m++) {
 		if(ship.jets & 1<<m) { // 'jets' is a bit field
-			new_engine_dots(80,m);
+			new_engine_dots(t_frame,m);
 		}
 	}
 
@@ -324,7 +371,7 @@ load_image(char *filename)
 void
 load_ship(void)
 {
-	load_sprite(SPRITE(&ship), "sprites/ship.png");
+	load_sprite(SPRITE(&ship), "ship.png");
 }
 
 int
@@ -376,18 +423,18 @@ init(void) {
 	}
 
 	// Load the banners
-	NULLERROR(surf_b_variations = load_image("banners/variations.png"));
-	NULLERROR(surf_b_on = load_image("banners/on.png"));
-	NULLERROR(surf_b_rockdodger = load_image("banners/rockdodger.png"));
+	NULLERROR(surf_b_variations = load_image("b_variations.png"));
+	NULLERROR(surf_b_on = load_image("b_on.png"));
+	NULLERROR(surf_b_rockdodger = load_image("b_rockdodger.png"));
 
-	NULLERROR(surf_b_game = load_image("banners/game.png"));
-	NULLERROR(surf_b_over = load_image("banners/over.png"));
+	NULLERROR(surf_b_game = load_image("b_game.png"));
+	NULLERROR(surf_b_over = load_image("b_over.png"));
 
 	// Load the life indicator (small ship) graphic.
-	NULLERROR(surf_life = load_image("indicators/life.png"));
+	NULLERROR(surf_life = load_image("life.png"));
 
 	// Load the font image
-	s = add_data_path(BIG_FONT_FILE);
+	s = add_data_path("font.png");
 	if(s) {
 		NULLERROR(surf_font_big = IMG_Load(s));
 		free(s);
@@ -448,19 +495,16 @@ draw_game_over(void)
 	if(new_high_score(score)) {
 		text0 = "New High Score!";
 		text1 = "Press SPACE to continue";
-	} else if(opt_gamespeed == EASY_GAMESPEED) {
-		text0 = "Press SPACE to start a new game";
-		text1 = "Press 'e' to start an easy game";
 	} else {
-		text0 = "Press SPACE to start an easy game";
-		text1 = "Press 'n' to start a normal game";
+		text0 = msgs[g_easy][0];
+		text1 = msgs[g_easy][1];
 	}
 
-	x = (XSIZE-SFont_TextWidth(g_font,text0))/2 + cos(fadetimer/4.5)*10;
-	SFont_Write(surf_screen,g_font,x,YSIZE-100 + cos(fadetimer/3)*5,text0);
+	x = (XSIZE-SFont_TextWidth(g_font,text0))/2 + cos(fadetimer/9)*10;
+	SFont_Write(surf_screen,g_font,x,YSIZE-100 + cos(fadetimer/6)*5,text0);
 
-	x = (XSIZE-SFont_TextWidth(g_font,text1))/2 + sin(fadetimer/4.5)*10;
-	SFont_Write(surf_screen,g_font,x,YSIZE-50 + sin(fadetimer/2)*5,text1);
+	x = (XSIZE-SFont_TextWidth(g_font,text1))/2 + sin(fadetimer/9)*10;
+	SFont_Write(surf_screen,g_font,x,YSIZE-50 + sin(fadetimer/4)*5,text1);
 }
 
 void
@@ -487,7 +531,7 @@ draw_title_page(void)
 	SDL_SetAlpha(surf_b_rockdodger, SDL_SRCALPHA, (int)(200 + 55*sin(fadetimer-2.0)));
 	SDL_BlitSurface(surf_b_rockdodger,NULL,surf_screen,&dest);
 
-	text = sequence[(int)(fadetimer/40)%NSEQUENCE];
+	text = msgs[g_easy][(int)(fadetimer/35)%NSEQUENCE];
 	x = (XSIZE-SFont_TextWidth(g_font,text))/2 + cos(fadetimer/4.5)*10;
 	SFont_Write(surf_screen,g_font,x,YSIZE-100 + cos(fadetimer/3)*5,text);
 
@@ -515,17 +559,6 @@ draw(void) {
 
 		case HIGH_SCORE_ENTRY:
 			play_tune(TUNE_HIGH_SCORE_ENTRY);
-			if(!process_score_input()) {  // done inputting name
-
-				// Change state to briefly show high scores page
-				state = HIGH_SCORE_DISPLAY;
-				state_timeout = 200;
-
-				// Write the high score table to the file
-				write_high_score_table();
-		
-				play_tune(TUNE_TITLE_PAGE);
-			}
 		// FALL THROUGH TO
 		case HIGH_SCORE_DISPLAY:
 			// Display de list o high scores mon.
@@ -551,8 +584,6 @@ static inline void
 kill_ship(Sprite *ship)
 {
 	ship->flags = MOVE;
-	// ship->flags = MOVE|DRAW;  // FADE SHIP
-	// SDL_SetAlpha(ship->image, SDL_SRCALPHA, 0); // FADE SHIP
 	bang = true;
 }
 
@@ -573,16 +604,38 @@ init_score_entry(void)
 	SDL_EnableUNICODE(1);
 	while(SDL_PollEvent(&e))
 		;
+	insert_score(score);
 }
 
 void
 gameloop() {
-	Uint8 *keystate = SDL_GetKeyState(NULL);
+	SDL_Event e;
+	Uint8 *keystate;
 	float tmp;
 
 
 	for(;;) {
-		SDL_PumpEvents();
+		while(SDL_PollEvent(&e)) {
+			switch(e.type) {
+				case SDL_QUIT: return;
+				case SDL_KEYUP:
+					if(e.key.keysym.sym == SDLK_ESCAPE
+					   || e.key.keysym.sym == SDLK_q)
+						return;
+					break;
+				case SDL_KEYDOWN:
+					if(state == HIGH_SCORE_ENTRY)
+						if(!process_score_input(&e.key.keysym)) {
+							// Write the high score table to the file
+							write_high_score_table();
+							// continue to display the scores briefly
+							state = HIGH_SCORE_DISPLAY;
+							state_timeout = 200;
+							play_tune(TUNE_TITLE_PAGE);
+						}
+					break;
+			}
+		}
 		keystate = SDL_GetKeyState(NULL);
 
 		if(!paused) {
@@ -605,7 +658,8 @@ gameloop() {
 						break;
 					case HIGH_SCORE_DISPLAY:
 						state = TITLE_PAGE;
-						state_timeout = 500.0;
+						state_timeout = 600.0;
+						fadetimer = 0.0;
 						break;
 					case HIGH_SCORE_ENTRY:
 						break;
@@ -618,18 +672,7 @@ gameloop() {
 				}
 			} else {
 				if(state == DEAD_PAUSE) {
-					float blast_radius;
-					// float alpha;  // FADE SHIP
-					if(state_timeout >= DEAD_PAUSE_LENGTH - 20.0) {
-						blast_radius = BLAST_RADIUS * (DEAD_PAUSE_LENGTH - state_timeout) / 20.0;
-						blast_rocks(bangx, bangy, blast_radius);
-					}
-
 					if(bangx < 60) bangx = 60;
-
-					// FADE SHIP
-					// alpha = 255.0 * (DEAD_PAUSE_LENGTH - state_timeout) / DEAD_PAUSE_LENGTH;
-					// SDL_SetAlpha(ship.image, SDL_SRCALPHA, (uint8_t)alpha);
 				}
 			}
 
@@ -691,19 +734,21 @@ gameloop() {
 			}
 
 			// new game
-			if((keystate[SDLK_SPACE] || keystate[SDLK_e] || keystate[SDLK_n])
+			if((keystate[SDLK_SPACE] || keystate[SDLK_1] || keystate[SDLK_2])
 			   && (state == HIGH_SCORE_DISPLAY
 			       || state == TITLE_PAGE
 			       || state == GAME_OVER)) {
 				if(state == GAME_OVER && new_high_score(score))
 					init_score_entry();
 				else {
-					if(keystate[SDLK_n] || (keystate[SDLK_SPACE] && !initial_rocks)) {
+					if((keystate[SDLK_SPACE] && !initial_rocks) || keystate[SDLK_2]) {
+						g_easy = 0;
 						initial_rocks = NORMAL_I_ROCKS;
 						final_rocks = NORMAL_F_ROCKS;
 						if(opt_gamespeed == EASY_GAMESPEED)
 							opt_gamespeed = NORMAL_GAMESPEED;
-					} else if(keystate[SDLK_e]) {
+					} else if(keystate[SDLK_1]) {
+						g_easy = 1;
 						initial_rocks = EASY_I_ROCKS;
 						final_rocks = EASY_F_ROCKS;
 						opt_gamespeed = EASY_GAMESPEED;
@@ -716,7 +761,6 @@ gameloop() {
 					ship.dx = screendx; ship.dy = screendy;
 					ship.lives = 4;
 					ship.flags = MOVE|DRAW|COLLIDE;
-					// SDL_SetAlpha(ship.image, SDL_SRCALPHA, SDL_ALPHA_OPAQUE);  // FADE SHIP
 					add_sprite(SPRITE(&ship));
 
 					score = 0;
@@ -731,10 +775,11 @@ gameloop() {
 
 		if(state == GAMEPLAY) {
 			if(!paused) {
-				if(keystate[SDLK_LEFT]  | keystate[SDLK_h]) { ship.dx -= 1.5*t_frame; ship.jets |= 1<<0;}
-				if(keystate[SDLK_DOWN]  | keystate[SDLK_t]) { ship.dy += 1.5*t_frame; ship.jets |= 1<<1;}
-				if(keystate[SDLK_RIGHT] | keystate[SDLK_n]) { ship.dx += 1.5*t_frame; ship.jets |= 1<<2;}
-				if(keystate[SDLK_UP]    | keystate[SDLK_c]) { ship.dy -= 1.5*t_frame; ship.jets |= 1<<3;}
+				// FIXME why is this at the bottom? Shouldn't it be up before the ship movement?
+				if(keystate[SDLK_LEFT]  || keystate[SDLK_h]) { ship.dx -= THRUSTER_STRENGTH*t_frame; ship.jets |= 1<<0;}
+				if(keystate[SDLK_DOWN]  || keystate[SDLK_t]) { ship.dy += THRUSTER_STRENGTH*t_frame; ship.jets |= 1<<1;}
+				if(keystate[SDLK_RIGHT] || keystate[SDLK_n]) { ship.dx += THRUSTER_STRENGTH*t_frame; ship.jets |= 1<<2;}
+				if(keystate[SDLK_UP]    || keystate[SDLK_c]) { ship.dy -= THRUSTER_STRENGTH*t_frame; ship.jets |= 1<<3;}
 				if(keystate[SDLK_3])		{ SDL_SaveBMP(surf_screen, "snapshot.bmp"); }
 			}
 
@@ -749,16 +794,16 @@ gameloop() {
 			}
 		}
 
-		if(state != HIGH_SCORE_ENTRY && (keystate[SDLK_q] || keystate[SDLK_ESCAPE]))
-			return;
-
+		if(state == TITLE_PAGE && keystate[SDLK_h]) {
+			state = HIGH_SCORE_DISPLAY;
+			state_timeout = 400;
+		}
 	}
 }
 
 int
 main(int argc, char **argv) {
-	init_opts();
-	argp_parse(&argp, argc, argv, 0, 0, 0);
+	if(!parse_opts(argc, argv)) return 1;
 
 	if(init()) {
 		printf ("ta: '%s'\n",initerror);