Added Pong Demo
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Armando Rivera
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97dc1c3daf
commit
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7
SDL2/pong/Readme.txt
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7
SDL2/pong/Readme.txt
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Simple PONG Demo
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W and S control the left paddle
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Arrow Up and Arrow Down control the right paddle
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Q quits the game
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1
SDL2/pong/compile.txt
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SDL2/pong/compile.txt
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g++ pong.cpp $(sdl2-config --libs --cflags) -ldl -o pong
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212
SDL2/pong/pong.cpp
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212
SDL2/pong/pong.cpp
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#include "../../jade.h"
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#include "../sdl2.inc"
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#include <SDL.h>
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MAIN
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/* Variable declarations, SDL2 initialization */
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Init(SDL_INIT_VIDEO);
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DIM AS PWINDOW window;
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DIM AS PRENDERER renderer;
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DIM AS BOOL p1_up = false;
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DIM AS BOOL p1_down = false;
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DIM AS BOOL p2_up = false;
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DIM AS BOOL p2_down = false;
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DIM AS INT p1_y = 199;
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DIM AS INT p2_y = 199;
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DIM AS INT p1_vel = 0;
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DIM AS INT p2_vel = 0;
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DIM AS BOOL quit = false;
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DIM AS INT ball_x = 639 / 2;
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DIM AS INT ball_y = 479 / 2;
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DIM AS INT ball_w = 8;
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DIM AS INT ball_h = 8;
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DIM AS INT ball_x_vel = 5;
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DIM AS INT ball_y_vel = 0;
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DIM AS INT delay = 30;
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DIM AS INT p1_score = 0;
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DIM AS INT p2_score = 0;
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DIM AS INT BALL_WIDTH = 10;
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DIM AS INT BALL_HEIGHT = 10;
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CONSTANT INT Y_MIN = 0;
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CONSTANT INT Y_MAX = 399;
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CONSTANT INT P1_X = 0;
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CONSTANT INT P2_X = 629;
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CONSTANT INT VEL_POS = 10;
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CONSTANT INT VEL_NEG = 0 - VEL_POS;
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window = CreateWindow("Pong",
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SDL_WINDOWPOS_CENTERED,
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SDL_WINDOWPOS_CENTERED,
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640,
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480,
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SDL_WINDOW_SHOWN);
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renderer = CreateRenderer(window, -1, 0);
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PRINT("Press Q to quit.");
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/* Main Game Loop */
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WHILE (NOT quit) BEGIN
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EVENT event;
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WHILE (PollEvent(ADDR event)) BEGIN
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SELECT (event.type) BEGIN
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CASE KEYDOWN:
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SELECT (event.key.keysym.sym) BEGIN
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CASE SDLK_w:
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p1_vel = VEL_NEG;
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ENDCASE
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CASE SDLK_s:
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p1_vel = VEL_POS;
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ENDCASE
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CASE SDLK_UP:
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p2_vel = VEL_NEG;
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ENDCASE
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CASE SDLK_DOWN:
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p2_vel = VEL_POS;
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ENDCASE
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CASE SDLK_q:
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quit = true;
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ENDCASE
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CASE SDLK_EQUALS:
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delay++;
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ENDCASE
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CASE SDLK_MINUS:
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IF (delay > 1) delay--;
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ENDCASE
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CASE_ELSE:
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ENDCASE
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ENDSELECT
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ENDCASE
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CASE KEYUP:
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SELECT (event.key.keysym.sym) BEGIN
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CASE SDLK_w:
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IF (p1_vel == VEL_NEG) p1_vel = 0;
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ENDCASE
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CASE SDLK_s:
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IF (p1_vel == VEL_POS) p1_vel = 0;
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ENDCASE
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CASE SDLK_UP:
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IF (p2_vel == VEL_NEG) p2_vel = 0;
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ENDCASE
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CASE SDLK_DOWN:
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IF (p2_vel == VEL_POS) p2_vel = 0;
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ENDCASE
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CASE_ELSE:
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ENDCASE
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ENDSELECT
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ENDCASE
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CASE_ELSE:
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ENDCASE
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ENDSELECT
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WEND
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/* Clears the screen */
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SetRenderDrawColor(renderer, 0, 0, 0, 255);
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RenderClear(renderer);
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DIM AS RECT midline = {640/2-4, 0, 9, 479};
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SetRenderDrawColor(renderer, 90, 90, 90, 255);
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RenderDrawRect(renderer, &midline);
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RenderFillRect(renderer, &midline);
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/* Manipulate paddle positions */
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p1_y = p1_y + p1_vel;
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p2_y = p2_y + p2_vel;
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IF (p1_y < Y_MIN) p1_y = Y_MIN;
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IF (p1_y > Y_MAX) p1_y = Y_MAX;
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IF (p2_y < Y_MIN) p2_y = Y_MIN;
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IF (p2_y > Y_MAX) p2_y = Y_MAX;
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/* Draw the paddles */
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SetRenderDrawColor(renderer, 255, 255, 255, 255);
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DIM AS Rect rect1 = {P1_X, p1_y, 10, 80};
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DIM AS Rect rect2 = {P2_X, p2_y, 10, 80};
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RenderDrawRect(renderer, &rect1);
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RenderDrawRect(renderer, &rect2);
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RenderFillRect(renderer, &rect1);
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RenderFillRect(renderer, &rect2);
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/* Manipulate the ball position */
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ball_x = ball_x + ball_x_vel;
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ball_y = ball_y + ball_y_vel;
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IF (ball_x + 4 >= 630 && ball_x <= 639 && ball_y + 4 < p2_y + 80 && ball_y - 4 > p2_y) THEN
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ball_x_vel = -ball_x_vel;
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ball_y_vel = ball_y_vel + (ball_y - (p2_y + 40)) / 10;
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IF (ball_x_vel < 0) ball_x_vel--;
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IF (ball_x_vel > 0) ball_x_vel++;
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ENDIF
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IF (ball_x - 4 <= 9 && ball_x >= 0 && ball_y + 4 < p1_y + 80 && ball_y - 4 > p1_y) THEN
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ball_x_vel = -ball_x_vel;
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ball_y_vel = ball_y_vel + (ball_y - (p1_y + 40)) / 10;
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IF (ball_x_vel < 0 && ball_x_vel > -8) ball_x_vel--;
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IF (ball_x_vel > 0 && ball_x_vel < 8) ball_x_vel++;
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ENDIF
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IF (ball_y - 4 <= 0 OR ball_y + 4 >= 479) THEN
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ball_y_vel = -ball_y_vel;
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ENDIF
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RenderDrawLine(renderer, ball_x, ball_y - 4, ball_x, ball_y + 4);
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RenderDrawLine(renderer, ball_x - 4, ball_y, ball_x + 4, ball_y);
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IF (ball_x < 0) THEN
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p2_score++;
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ball_x = 639 / 2;
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ball_y = 439 / 2;
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ball_x_vel = -6;
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ball_y_vel = 0;
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p1_y = 199;
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p2_y = 199;
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ENDIF
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IF (ball_x > 639) THEN
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p1_score++;
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ball_x = 639 / 2;
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ball_y = 439 / 2;
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ball_x_vel = 6;
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ball_y_vel = 0;
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p1_y = 199;
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p2_y = 199;
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ENDIF
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/* Draw everything to the screen */
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RenderPresent(renderer);
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Delay(delay);
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}
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Quit();
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RETURN 0;
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ENDMAIN
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