From 06a678629c99293a642af7d3aa39c20ea28e3d4d Mon Sep 17 00:00:00 2001
From: Victor Gamper <victor@erika-imac.fritz.box>
Date: Sun, 26 Jan 2020 11:04:36 +0100
Subject: Added a string renderer

---
 catch.c | 197 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 197 insertions(+)
 create mode 100644 catch.c

(limited to 'catch.c')

diff --git a/catch.c b/catch.c
new file mode 100644
index 0000000..2db533d
--- /dev/null
+++ b/catch.c
@@ -0,0 +1,197 @@
+/*
+ * catch.c
+ *
+ *  Created on: 25.01.2020
+ *      Author: victor
+ */
+#include "catch.h"
+
+SDL_Surface* screen;
+bool run;
+SDL_Rect sdl_rect, sdl_rect2;
+
+// key handler stuff
+bool keyPressed[SDLK_LAST];
+
+// the images
+SDL_Surface* image_chargebar, *image_chargebar_dark, *image_cat, *image_bird;
+
+struct Cat cat;
+struct Bird bird[BIRD_COUNT];
+
+int state;
+
+int main(int argc, char* argv[]) {
+	memset(keyPressed,0,sizeof(keyPressed));
+
+	// initialize SDL
+	if(SDL_Init(SDL_INIT_VIDEO) == -1) {
+		printf("Could not initialize SDL! Error: %s", SDL_GetError());
+		return -1;
+	}
+
+	// create a window
+	screen = SDL_SetVideoMode(640, 480, 8, SDL_DOUBLEBUF | SDL_FULLSCREEN);
+	if(!screen) {
+		printf("Could not create a SDL window! Error: %s", SDL_GetError());
+		return -1;
+	}
+
+	// initialize the font renderer
+	Font_Init();
+
+	// load the images
+	SDL_RWops* rwops = SDL_RWFromConstMem(chargebar_bmp, sizeof(chargebar_bmp) / sizeof(char));
+	image_chargebar = SDL_LoadBMP_RW(rwops,1);
+	rwops = SDL_RWFromConstMem(chargebar_dark_bmp, sizeof(chargebar_dark_bmp) / sizeof(char));
+	image_chargebar_dark = SDL_LoadBMP_RW(rwops,1);
+	rwops = SDL_RWFromConstMem(cat_bmp, sizeof(cat_bmp) / sizeof(char));
+	image_cat = SDL_LoadBMP_RW(rwops,1);
+	SDL_SetColorKey(image_cat, SDL_SRCCOLORKEY, SDL_MapRGB(image_cat->format, 255, 0, 255));
+
+	// set the correct physics flags for the cat
+	cat.jumping = true;
+
+	// start the event loop
+	run = true;
+	while(run) {
+		// process all sdl events
+		SDL_Event event;
+		while(SDL_PollEvent(&event)) {
+			switch(event.type) {
+				case SDL_QUIT:
+					run = false;
+					break;
+
+				case SDL_KEYDOWN:
+					keyPressed[event.key.keysym.sym] = true;
+					break;
+
+				case SDL_KEYUP:
+					keyPressed[event.key.keysym.sym] = false;
+					break;
+			}
+		}
+
+		// quit if the esc key was pressed
+		if(keyPressed[SDLK_ESCAPE]) run = false;
+
+		// run the game routine
+		gameRoutine();
+
+		// draw the sky
+		sdl_rect.x = 0;
+		sdl_rect.y = 0;
+		sdl_rect.w = screen->w;
+		sdl_rect.h = screen->h-FLOOR_HEIGHT;
+		SDL_FillRect(screen,&sdl_rect,SDL_MapRGB(screen->format,0,0,200));
+
+		// draw the floor
+		sdl_rect.y = sdl_rect.h;
+		sdl_rect.h = FLOOR_HEIGHT;
+		SDL_FillRect(screen,&sdl_rect,SDL_MapRGB(screen->format,0,200,000));
+
+		// draw the cat
+		cat.x = screen->w/2 + image_cat->w/2;
+		sdl_rect.x = cat.x;
+		sdl_rect.y = cat.y;
+		SDL_BlitSurface(image_cat, 0, screen, &sdl_rect);
+
+		// draw the birds
+		for(int i = 0; i<BIRD_COUNT; i++) {
+			if(bird[i].type != BIRD_TYPE_NONE) {
+				sdl_rect.x = bird[i].x;
+				sdl_rect.y = bird[i].y;
+				SDL_BlitSurface(image_bird, 0, screen, &sdl_rect);
+			}
+		}
+
+		// draw the chargebar
+		int chargeBarSplitPosition;
+
+		if(!cat.jumping && cat.downwardForce == 0) {
+			chargeBarSplitPosition = CHARGEBAR_WIDTH;
+		}
+		else
+		if(cat.downwardForce == 0)
+			chargeBarSplitPosition = 0;
+		else
+		if(cat.downwardForce < 0)
+			chargeBarSplitPosition = CHARGEBAR_WIDTH / -(MAXIMUM_JUMP_FORCE / cat.downwardForce);
+		else
+			chargeBarSplitPosition = CHARGEBAR_WIDTH / (MAXIMUM_JUMP_FORCE / cat.downwardForce);
+
+		sdl_rect.x = 0;
+		sdl_rect.y = 0;
+		sdl_rect.w = chargeBarSplitPosition;
+		sdl_rect.h = 1;
+		sdl_rect2.x = CHARGEBAR_POS_X;
+		sdl_rect2.y = CHARGEBAR_POS_Y;
+
+		// draw it 16 times
+		for(int i = 0; i<15;i++) {
+			SDL_BlitSurface(image_chargebar, &sdl_rect, screen, &sdl_rect2);
+			sdl_rect2.y++;
+		}
+
+		// draw the grayed out part of the bar
+		sdl_rect.x = chargeBarSplitPosition;
+		sdl_rect.y = 0;
+		sdl_rect.w = CHARGEBAR_WIDTH-chargeBarSplitPosition;
+		sdl_rect2.x = CHARGEBAR_POS_X+chargeBarSplitPosition;
+		sdl_rect2.y = CHARGEBAR_POS_Y;
+
+		// draw it 16 times
+		for(int i = 0; i<15;i++) {
+			SDL_BlitSurface(image_chargebar_dark, &sdl_rect, screen, &sdl_rect2);
+			sdl_rect2.y++;
+		}
+
+		Font_DrawString(screen, 0,5, "ABCDEFGHIJKLMNOPQRSTUVWXYZ\nabcdefghijklmnopqrstufwxyz\n 01234567890: +");
+
+		// draw the screen
+		SDL_Flip(screen);
+
+		// wait 50 milliseconds
+		usleep(50);
+	}
+
+	// dispose the surfaces
+	SDL_FreeSurface(screen);
+	SDL_FreeSurface(image_chargebar);
+	SDL_FreeSurface(image_chargebar_dark);
+	//SDL_FreeSurface(screen);
+	SDL_Quit();
+
+	// close the program
+	return 0;
+}
+
+void gameRoutine() {
+	bool charge = keyPressed[SDLK_SPACE] && (state == STATE_GAME);
+
+	// do the physics calculation
+	if(cat.jumping) {
+		cat.downwardForce+=0.03;
+		cat.y+=cat.downwardForce;
+
+		// the cat has touched the floor
+		if(cat.y>screen->h-FLOOR_HEIGHT-CAT_HEIGHT) {
+			cat.y = screen->h-FLOOR_HEIGHT-CAT_HEIGHT;
+			cat.jumping = false;
+			cat.downwardForce = 0;
+		}
+	} else {
+
+		//the player accumulated some energy and let go of the space bar
+		if(!charge && cat.downwardForce<0) {
+			cat.jumping = true;
+		}
+		else if(charge) {
+			if(cat.downwardForce > -MAXIMUM_JUMP_FORCE)
+				cat.downwardForce-=0.02;
+		}
+	}
+
+	//
+}
-- 
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