X-Git-Url: https://jasonwoof.com/gitweb/?p=vor.git;a=blobdiff_plain;f=main.c;h=5ac2b5e7b6af905ccfbffcce6aa8a0c4c1fe8665;hp=b4972a22dc89749f122e87f19de7015f76fa783d;hb=45925ff114a17b9c1c0a720ff668e2cb795cd761;hpb=a77978e0c9bc91ea3d7b192ce136621e78d4ec5b

diff --git a/main.c b/main.c
index b4972a2..5ac2b5e 100644
--- a/main.c
+++ b/main.c
@@ -21,8 +21,8 @@
 
 #include <argp.h>
 #include <math.h>
-#include <SDL/SDL.h>
-#include <SDL/SDL_image.h>
+#include <SDL.h>
+#include <SDL_image.h>
 #include <stdarg.h>
 #include <stdio.h>
 #include <stdlib.h>
@@ -39,7 +39,7 @@
 #include "mt.h"
 #include "rocks.h"
 #include "score.h"
-#include "shape.h"
+#include "sprite.h"
 #include "sound.h"
 
 // ************************************* VARS
@@ -51,7 +51,6 @@ SDL_Surface
 	*surf_b_rockdodger, // "rockdodger" banner
 	*surf_b_game,	// Title element "game"
 	*surf_b_over,	// Title element "over"
-	*surf_ship,		// Spaceship element
 	*surf_life,	// Indicator of number of ships remaining
 	*surf_rock[NROCKS],	// THE ROCKS
 	*surf_font_big;	// The big font
@@ -67,9 +66,8 @@ struct bangdots bdot[MAXBANGDOTS], *bdotptr = bdot;
 char topline[1024];
 char *initerror = "";
 
-struct shape shipshape;
-float shipx = XSIZE/2, shipy = YSIZE/2;	// X position, 0..XSIZE
-float shipdx = SCREENDXMIN, shipdy = 0.0;	// Change in X position per tick.
+struct ship ship = { SHIP, 0, NULL, XSIZE/2, YSIZE/2, SCREENDXMIN, 0.0 };
+	  
 float screendx = SCREENDXMIN, screendy = 0.0;
 float xscroll, yscroll;
 float back_dist;
@@ -79,10 +77,10 @@ float t_frame;  // length of this frame (in ticks = 1/20th second)
 int ms_frame;   // length of this frame (milliseconds)
 int ms_end;     // end of this frame (milliseconds)
 
+int bang = false;
 float bangx, bangy, bangdx, bangdy;
 
-int nships,score;
-int jets = 0;
+int score;
 
 float fadetimer = 0, faderate;
 
@@ -105,7 +103,7 @@ float state_timeout = 600.0;
 #define NSEQUENCE 2
 char *sequence[] = {
 	"Press SPACE to start",
-	"http://herkamire.com/jason/vor"
+	"http://jasonwoof.org/vor"
 };
 
 int bangdotlife, nbangdots;
@@ -206,7 +204,7 @@ draw_bang_dots(SDL_Surface *s)
 		}
 
 		// check collisions
-		if(pixel_hit_rocks(bdot[i].x, bdot[i].y)) { bdot[i].active = 0; continue; }
+		if(pixel_collides(bdot[i].x, bdot[i].y)) { bdot[i].active = 0; 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];
@@ -223,8 +221,8 @@ new_engine_dots(int n, int dir) {
 	float hx, hy; // half ship width/height.
 	static const int s[4] = { 2, 1, 0, 1 };
 
-	hx = surf_ship->w / 2;
-	hy = surf_ship->h / 2;
+	hx = ship.image->w / 2;
+	hy = ship.image->h / 2;
 
 	for(i = 0; i<n; i++) {
 		if(dotptr->active == 0) {
@@ -234,15 +232,15 @@ new_engine_dots(int n, int dir) {
 			dy = r * -sin(a);  // screen y is "backwards".
 
 			dotptr->active = 1;
-			dotptr->x = shipx + s[dir]*hx + (frnd()-0.5)*3;
-			dotptr->y = shipy + s[(dir+1)&3]*hy + (frnd()-0.5)*3;
+			dotptr->x = ship.x + s[dir]*hx + (frnd()-0.5)*3;
+			dotptr->y = ship.y + s[(dir+1)&3]*hy + (frnd()-0.5)*3;
 			if(dir&1) {
-				dotptr->dx = shipdx + 2*dx;
-				dotptr->dy = shipdy + 20*dy;
+				dotptr->dx = ship.dx + 2*dx;
+				dotptr->dy = ship.dy + 20*dy;
 				dotptr->life = 60 * fabs(dy);
 			} else {
-				dotptr->dx = shipdx + 20*dx;
-				dotptr->dy = shipdy + 2*dy;
+				dotptr->dx = ship.dx + 20*dx;
+				dotptr->dy = ship.dy + 2*dy;
 				dotptr->life = 60 * fabs(dx);
 			}
 
@@ -271,7 +269,7 @@ draw_engine_dots(SDL_Surface *s) {
 			edot[i].active = 0;
 			continue;
 		}
-		if(pixel_hit_rocks(edot[i].x, edot[i].y)) { edot[i].active = 0; continue; }
+		if(pixel_collides(edot[i].x, edot[i].y)) { edot[i].active = 0; continue; }
 		heatindex = edot[i].life * 6;
 		c = heatindex>3*W ? heatcolor[3*W-1] : heatcolor[heatindex];
 		pixels[row_inc*(int)(edot[i].y) + (int)(edot[i].x)] = c;
@@ -284,7 +282,7 @@ drawdots(SDL_Surface *s) {
 
 	// Create engine dots out the side we're moving from
 	for(m = 0; m<4; m++) {
-		if(jets & 1<<m) { // 'jets' is a bit field
+		if(ship.jets & 1<<m) { // 'jets' is a bit field
 			new_engine_dots(80,m);
 		}
 	}
@@ -298,11 +296,33 @@ drawdots(SDL_Surface *s) {
 	SDL_UnlockSurface(s);
 }
 
+SDL_Surface *
+load_image(char *filename)
+{
+	SDL_Surface *tmp, *img = NULL;
+	char *s = add_data_path(filename);
+	if(s) {
+		tmp = IMG_Load(s);
+		free(s);
+		if(tmp) {
+			img = SDL_DisplayFormat(tmp);
+			SDL_FreeSurface(tmp);
+		}
+	}
+	return img;
+}
+
+void
+load_ship(void)
+{
+	load_sprite(SPRITE(&ship), "sprites/ship.png");
+}
+
 int
 init(void) {
 
 	int i;
-	SDL_Surface *temp;
+	char *s;
 	Uint32 flag;
 
 	// Where are our data files?
@@ -313,7 +333,7 @@ init(void) {
 		// Initialize SDL with audio and video
 		if(SDL_Init(SDL_INIT_VIDEO | SDL_INIT_AUDIO) != 0) {
 			opt_sound = 0;
-			printf ("Can't open sound, starting without it\n");
+			fputs("Can't open sound, starting without it\n", stderr);
 			atexit(SDL_Quit);
 		} else {
 			atexit(SDL_Quit);
@@ -347,37 +367,29 @@ init(void) {
 	}
 
 	// Load the banners
-	NULLERROR(temp = IMG_Load(add_path("banners/variations.png")));
-	NULLERROR(surf_b_variations = SDL_DisplayFormat(temp));
-
-	NULLERROR(temp = IMG_Load(add_path("banners/on.png")));
-	NULLERROR(surf_b_on = SDL_DisplayFormat(temp));
-
-	NULLERROR(temp = IMG_Load(add_path("banners/rockdodger.png")));
-	NULLERROR(surf_b_rockdodger = SDL_DisplayFormat(temp));
-
-	NULLERROR(temp = IMG_Load(add_path("banners/game.png")));
-	NULLERROR(surf_b_game = SDL_DisplayFormat(temp));
-
-	NULLERROR(temp = IMG_Load(add_path("banners/over.png")));
-	NULLERROR(surf_b_over = SDL_DisplayFormat(temp));
-
-	surf_font_big = IMG_Load(add_path(BIG_FONT_FILE));
-	g_font = SFont_InitFont(surf_font_big);
+	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"));
 
-	// Load the spaceship graphic.
-	NULLERROR(temp = IMG_Load(add_path("sprites/ship.png")));
-	NULLERROR(surf_ship = SDL_DisplayFormat(temp));
-	get_shape(surf_ship, &shipshape);
+	NULLERROR(surf_b_game = load_image("banners/game.png"));
+	NULLERROR(surf_b_over = load_image("banners/over.png"));
 
 	// Load the life indicator (small ship) graphic.
-	NULLERROR(temp = IMG_Load(add_path("indicators/life.png")));
-	NULLERROR(surf_life = SDL_DisplayFormat(temp));
+	NULLERROR(surf_life = load_image("indicators/life.png"));
+
+	// Load the font image
+	s = add_data_path(BIG_FONT_FILE);
+	if(s) {
+		NULLERROR(surf_font_big = IMG_Load(s));
+		free(s);
+		g_font = SFont_InitFont(surf_font_big);
+	}
 
 	init_engine_dots();
 	init_dust();
 
-	init_rocks();
+	init_sprites();
+	add_sprite(SPRITE(&ship));
 
 	// Remove the mouse cursor
 #ifdef SDL_DISABLE
@@ -387,43 +399,33 @@ init(void) {
 	return 0;
 }
 
-int
-draw() {
+void
+show_lives(void)
+{
 	int i;
 	SDL_Rect dest;
-	int bang, x;
-	char *text;
-	float fadegame,fadeover;
-
-	bang = 0;
 
-	// Draw a fully black background
-	SDL_FillRect(surf_screen,NULL,0);
-
-	// Draw the background dots
-	drawdots(surf_screen);
-
-	// Draw ship
-	if(state == GAMEPLAY ) {
-		dest.x = shipx;
-		dest.y = shipy;
-		SDL_BlitSurface(surf_ship,NULL,surf_screen,&dest);
+	for(i=0; i<ship.lives-1; i++) {
+		dest.x = (i + 1)*(surf_life->w + 10);
+		dest.y = 20;
+		SDL_BlitSurface(surf_life, NULL, surf_screen, &dest);
 	}
+}
 
-	draw_rocks();
+void
+draw(void) {
+	SDL_Rect dest;
+	int x;
+	char *text;
+	float fadegame,fadeover;
 
-	// Draw the life indicators.
-	if(state == GAMEPLAY || state == DEAD_PAUSE || state == GAME_OVER) {
-		for(i = 0; i<nships-1; i++) {
-			dest.x = (i + 1)*(surf_life->w + 10);
-			dest.y = 20;
-			SDL_BlitSurface(surf_life, NULL, surf_screen, &dest);
-		}
-	}
+	SDL_FillRect(surf_screen,NULL,0);  // black background
+	drawdots(surf_screen);             // background dots
+	draw_sprite(SPRITE(&ship));
+	draw_rocks();
 
-	// Draw the score
-	snprintscore_line(topline, 50, score);
-	SFont_Write(surf_screen, g_font, XSIZE-250, 0, topline);
+	show_lives();
+	show_score();
 
 	// If it's game over, show the game over graphic in the dead centre
 	switch (state) {
@@ -503,43 +505,51 @@ draw() {
 			; // no action necessary
 	}
 
-	if(state == GAMEPLAY) {
-		bang = hit_rocks(shipx, shipy, &shipshape);
-	}
+	collisions();
 
 	ms_frame = SDL_GetTicks() - ms_end;
 	ms_end += ms_frame;
-	if(ms_frame>200 || ms_frame<0) {
-		// We won't run at all below 5 frames per second.
-		// This also happens if we were paused, grr.
-		t_frame = 0;
-		ms_frame = 0;
-	} else {
-		t_frame = opt_gamespeed * ms_frame / 50;
-		if(state == GAMEPLAY) score += ms_frame;
-	}
+	t_frame = opt_gamespeed * ms_frame / 50;
+	if(state == GAMEPLAY) score += ms_frame;
 
 	// Update the surface
 	SDL_Flip(surf_screen);
+}
 
+static inline void
+kill_ship(Sprite *ship)
+{
+	ship->flags = MOVE|DRAW;
+	SDL_SetAlpha(ship->image, SDL_SRCALPHA, 0);
+	bang = true;
+}
 
-	return bang;
+void
+do_collision(Sprite *a, Sprite *b)
+{
+	if(a->type == SHIP) kill_ship(a);
+	else if (b->type == SHIP) kill_ship(b);
+	else bounce(a, b);
 }
 
-int
+void
 gameloop() {
-	Uint8 *keystate;
+	Uint8 *keystate = SDL_GetKeyState(NULL);
 	float tmp;
 
 
 	for(;;) {
+		SDL_PumpEvents();
+		keystate = SDL_GetKeyState(NULL);
+
 		if(!paused) {
 			// Count down the game loop timer, and change state when it gets to zero or less;
 
 			if((state_timeout -= t_frame*3) < 0) {
 				switch(state) {
 					case DEAD_PAUSE:
-						// Create a new ship and start all over again
+						// Restore the ship and continue playing
+						ship.flags = DRAW|MOVE|COLLIDE;
 						state = GAMEPLAY;
 						play_tune(TUNE_GAMEPLAY);
 						break;
@@ -551,7 +561,7 @@ gameloop() {
 							SDL_EnableUNICODE(1);
 							while(SDL_PollEvent(&e))
 								;
-						} else if(!keystate[SDLK_SPACE]) {
+						} else {
 							state = HIGH_SCORE_DISPLAY;
 							state_timeout = 400;
 						}
@@ -571,32 +581,25 @@ gameloop() {
 				}
 			} else {
 				if(state == DEAD_PAUSE) {
-					float blast_radius;
-					int fixonly;
-
-					if(state_timeout < DEAD_PAUSE_LENGTH - 20.0) {
-						blast_radius = BLAST_RADIUS * 1.3;
-						fixonly = 1;
-					} else {
+					float blast_radius, alpha;
+					if(state_timeout >= DEAD_PAUSE_LENGTH - 20.0) {
 						blast_radius = BLAST_RADIUS * (DEAD_PAUSE_LENGTH - state_timeout) / 20.0;
-						fixonly = 0;
+						blast_rocks(bangx, bangy, blast_radius);
 					}
-					blast_rocks(bangx, bangy, blast_radius, fixonly);
 
 					if(bangx < 60) bangx = 60;
+
+					alpha = 255.0 * (DEAD_PAUSE_LENGTH - state_timeout) / DEAD_PAUSE_LENGTH;
+					SDL_SetAlpha(ship.image, SDL_SRCALPHA, (uint8_t)alpha);
 				}
 			}
 
 			new_rocks();
 
-			// INERTIA
-			shipx += shipdx*t_frame;
-			shipy += shipdy*t_frame;
-
 			// SCROLLING
-			tmp = (shipy-YSCROLLTO)/25 + (shipdy-screendy);
+			tmp = (ship.y+ship.dy*t_frame-YSCROLLTO)/25 + (ship.dy-screendy);
 			screendy += tmp * t_frame/12;
-			tmp = (shipx-XSCROLLTO)/25 + (shipdx-screendx);
+			tmp = (ship.x+ship.dx*t_frame-XSCROLLTO)/25 + (ship.dx-screendx);
 			screendx += tmp * t_frame/12;
 			// taper off so we don't hit the barrier abruptly.
 			// (if we would hit in < 2 seconds, adjust to 2 seconds).
@@ -610,81 +613,77 @@ gameloop() {
 			xscroll = screendx * t_frame;
 			yscroll = screendy * t_frame;
 
-			shipx -= xscroll;
-			shipy -= yscroll;
-
 			// move bang center
 			bangx += bangdx*t_frame - xscroll;
 			bangy += bangdy*t_frame - yscroll;
 
-			move_rocks();
+			move_sprites();
 
 
-			// BOUNCE X
-			if(shipx<0 || shipx>XSIZE-surf_ship->w) {
-				// BOUNCE from left and right wall
-				shipx -= (shipdx-screendx)*t_frame;
-				shipdx = screendx - (shipdx-screendx)*opt_bounciness;
+			// BOUNCE off left or right edge of screen
+			if(ship.x < 0 || ship.x+ship.w > XSIZE) {
+				ship.x -= (ship.dx-screendx)*t_frame;
+				ship.dx = screendx - (ship.dx-screendx)*opt_bounciness;
 			}
 
-			// BOUNCE Y
-			if(shipy<0 || shipy>YSIZE-surf_ship->h) {
-				// BOUNCE from top and bottom wall
-				shipy -= (shipdy-screendy)*t_frame;
-				shipdy = screendy - (shipdy-screendy)*opt_bounciness;
+			// BOUNCE off top or bottom of screen
+			if(ship.y < 0 || ship.y+ship.h > YSIZE) {
+				ship.y -= (ship.dy-screendy)*t_frame;
+				ship.dy = screendy - (ship.dy-screendy)*opt_bounciness;
 			}
 
+			draw();
 
-			if(draw() && state == GAMEPLAY) {
+			if(state == GAMEPLAY && bang) {
 				// Died
+				bang = false;
 				play_sound(SOUND_BANG); // Play the explosion sound
-				bangx = shipx; bangy = shipy; bangdx = shipdx; bangdy = shipdy;
-				new_bang_dots(shipx,shipy,shipdx,shipdy,surf_ship);
-				shipdx *= 0.5; shipdy *= 0.5;
-				if(shipdx < SCREENDXMIN) shipdx = SCREENDXMIN;
-				if(--nships <= 0) {
+				bangx = ship.x; bangy = ship.y; bangdx = ship.dx; bangdy = ship.dy;
+				new_bang_dots(ship.x,ship.y,ship.dx,ship.dy,ship.image);
+				ship.dx *= 0.5; ship.dy *= 0.5;
+				if(ship.dx < SCREENDXMIN) ship.dx = SCREENDXMIN;
+				if(--ship.lives <= 0) {
 					state = GAME_OVER;
-					shipdx = SCREENDXMIN; shipdy = 0;
+					ship.dx = SCREENDXMIN; ship.dy = 0;
 					state_timeout = 200.0;
 					fadetimer = 0.0;
 					faderate = t_frame;
-				}
-				else {
+				} else {
 					state = DEAD_PAUSE;
 					state_timeout = DEAD_PAUSE_LENGTH;
 				}
 			}
 
-			SDL_PumpEvents();
-			keystate = SDL_GetKeyState(NULL);
-
 			// new game
-			if(keystate[SDLK_SPACE] && (state == HIGH_SCORE_DISPLAY || state == TITLE_PAGE)) {
-
+			if(keystate[SDLK_SPACE]
+			   && (state == HIGH_SCORE_DISPLAY
+			       || state == TITLE_PAGE
+			       || state == GAME_OVER)) {
+				reset_sprites();
 				reset_rocks();
 
-				nships = 4;
+				ship.x = XSIZE/2.2; ship.y = YSIZE/2;
+				ship.dx = screendx; ship.dy = screendy;
+				ship.lives = 4;
+				ship.flags = MOVE|DRAW|COLLIDE;
+				SDL_SetAlpha(ship.image, SDL_SRCALPHA, SDL_ALPHA_OPAQUE);
+				add_sprite(SPRITE(&ship));
+
 				score = 0;
 
 				state = GAMEPLAY;
 				play_tune(TUNE_GAMEPLAY);
-
-				shipx = XSIZE/2.2; shipy = YSIZE/2;
-				shipdx = screendx; shipdy = screendy;
 			}
 
-			jets = 0;
-		} else {
-			SDL_PumpEvents();
-			keystate = SDL_GetKeyState(NULL);
+			ship.jets = 0;
 		}
 
-		if(state == GAMEPLAY) {
+		if(state == GAMEPLAY || state == DEAD_PAUSE) {
 			if(!paused) {
-				if(keystate[SDLK_LEFT]  | keystate[SDLK_h]) { shipdx -= 1.5*t_frame; jets |= 1<<0;}
-				if(keystate[SDLK_DOWN]  | keystate[SDLK_t]) { shipdy += 1.5*t_frame; jets |= 1<<1;}
-				if(keystate[SDLK_RIGHT] | keystate[SDLK_n]) { shipdx += 1.5*t_frame; jets |= 1<<2;}
-				if(keystate[SDLK_UP]    | keystate[SDLK_c]) { shipdy -= 1.5*t_frame; jets |= 1<<3;}
+				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;}
 				if(keystate[SDLK_3])		{ SDL_SaveBMP(surf_screen, "snapshot.bmp"); }
 			}
 
@@ -692,19 +691,15 @@ gameloop() {
 				if(!pausedown) {
 					paused = !paused;
 					pausedown = 1;
+					if(!paused) ms_end = SDL_GetTicks();
 				}
 			} else {
 				pausedown = 0;
 			}
-		} else if(state == GAME_OVER) {
-			if(keystate[SDLK_SPACE]) {
-				state_timeout = -1;
-			}
 		}
 
-		if(state != HIGH_SCORE_ENTRY && (keystate[SDLK_q] || keystate[SDLK_ESCAPE])) {
-			return 0;
-		}
+		if(state != HIGH_SCORE_ENTRY && (keystate[SDLK_q] || keystate[SDLK_ESCAPE]))
+			return;
 
 	}
 }