player: Introduce player object

3 files changed, 152 insertions, 22 deletions

diff --git a/src/main.c b/src/main.c
index 70b283d..f9b89bf 100644
--- a/src/main.c
+++ b/src/main.c
@@ -35,6 +35,7 @@
 #include <SDL.h>
 
 #include "controller.h"
+#include "player.h"
 
 const int SCREEN_WIDTH  = 640;
 const int SCREEN_HEIGHT = 480;
@@ -76,12 +77,14 @@ main (int   argc,
     return EXIT_FAILURE;
   }
 
-  SDL_Rect rect = { .x = 0, .y = 0, .w = 20, .h = 20 };
   SDL_Rect bg_rect = { .x = 0, .y = 0, .w = SCREEN_WIDTH, .h = SCREEN_HEIGHT };
 
   bool quit = false;
   controller_t ctrl = {0};
 
+  player_t player;
+  player_init(&player);
+
   while (!quit) {
     SDL_SetRenderDrawColor(renderer, 0, 0, 0, 1);
     SDL_RenderClear(renderer);
@@ -99,28 +102,9 @@ main (int   argc,
       controller_update(&ctrl, &event);
     }
 
-    if (controller_is_up_pressed(&ctrl) && rect.y > 0) {
-      rect.y -= 8;
-      rect.y = rect.y < 0 ? 0 : rect.y;
-    }
-
-    if (controller_is_down_pressed(&ctrl) && rect.y + 8 < SCREEN_HEIGHT) {
-      rect.y += 8;
-      rect.y = rect.y + rect.h > SCREEN_HEIGHT ? SCREEN_HEIGHT - rect.h : rect.y;
-    }
-
-    if (controller_is_left_pressed(&ctrl) && rect.x > 0)  {
-      rect.x -= 8;
-      rect.x = rect.x < 0 ? 0 : rect.x;
-    }
-
-    if (controller_is_right_pressed(&ctrl) && rect.x + 8 < SCREEN_WIDTH) {
-      rect.x += 8;
-      rect.x = rect.x + rect.h > SCREEN_WIDTH ? SCREEN_WIDTH - rect.h : rect.x;
-    }
+    player_update(&player, &ctrl, SCREEN_WIDTH, SCREEN_HEIGHT);
+    player_draw(&player, renderer);
 
-    SDL_SetRenderDrawColor(renderer, 0xFF, 0, 0, 1);
-    SDL_RenderFillRect(renderer, &rect);
     SDL_RenderPresent(renderer);
 
     uint64_t end = SDL_GetPerformanceCounter();
diff --git a/src/player.c b/src/player.c
new file mode 100644
index 0000000..000eb76
--- /dev/null
+++ b/src/player.c
@@ -0,0 +1,91 @@
+/*
+* Copyright (c) 2021, Johnny Richard
+* All rights reserved.
+*
+* Redistribution and use in source and binary forms, with or without
+* modification, are permitted provided that the following conditions are met:
+*
+* 1. Redistributions of source code must retain the above copyright notice, this
+*    list of conditions and the following disclaimer.
+*
+* 2. Redistributions in binary form must reproduce the above copyright notice,
+*    this list of conditions and the following disclaimer in the documentation
+*    and/or other materials provided with the distribution.
+*
+* 3. Neither the name of the copyright holder nor the names of its
+*    contributors may be used to endorse or promote products derived from
+*    this software without specific prior written permission.
+*
+* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
+* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*/
+
+#include "player.h"
+
+#include <assert.h>
+#include <SDL.h>
+
+void
+player_init(player_t *player)
+{
+  assert(player && "player is required");
+  player->x = 0;
+  player->y = 0;
+  player->width = 20;
+  player->height = 20;
+  player->speed = 8;
+}
+
+void player_update(player_t     *player,
+                   controller_t *ctrl,
+                   int           screen_width,
+                   int           screen_height)
+{
+  if (controller_is_up_pressed(ctrl) && player->y > 0) {
+    player->y -= player->speed;
+    player->y = player->y < 0 ? 0 : player->y;
+  }
+
+  if (controller_is_down_pressed(ctrl) && player->y < screen_height) {
+    player->y += player->speed;
+    player->y = player->y + player->height > screen_height 
+      ? screen_height - player->height 
+      : player->y;
+  }
+
+  if (controller_is_left_pressed(ctrl) && player->x > 0)  {
+    player->x -= player->speed;
+    player->x = player->x < 0 
+      ? 0 
+      : player->x;
+  }
+
+  if (controller_is_right_pressed(ctrl) && player->x < screen_width) {
+    player->x += player->speed;
+    player->x = player->x + player->width > screen_width 
+      ? screen_width - player->width 
+      : player->x;
+  }
+}
+
+void
+player_draw(player_t *player, SDL_Renderer *renderer)
+{
+  SDL_Rect rect = { 
+    .x = player->x, 
+    .y = player->y,
+    .w = player->width,
+    .h = player->height 
+  };
+
+  SDL_SetRenderDrawColor(renderer, 0, 0, 0xFF, 1);
+  SDL_RenderFillRect(renderer, &rect);
+}
diff --git a/src/player.h b/src/player.h
new file mode 100644
index 0000000..1f211c7
--- /dev/null
+++ b/src/player.h
@@ -0,0 +1,55 @@
+/*
+* Copyright (c) 2021, Johnny Richard
+* All rights reserved.
+*
+* Redistribution and use in source and binary forms, with or without
+* modification, are permitted provided that the following conditions are met:
+*
+* 1. Redistributions of source code must retain the above copyright notice, this
+*    list of conditions and the following disclaimer.
+*
+* 2. Redistributions in binary form must reproduce the above copyright notice,
+*    this list of conditions and the following disclaimer in the documentation
+*    and/or other materials provided with the distribution.
+*
+* 3. Neither the name of the copyright holder nor the names of its
+*    contributors may be used to endorse or promote products derived from
+*    this software without specific prior written permission.
+*
+* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
+* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*/
+#ifndef PLAYER_H
+#define PLAYER_H
+
+#include "controller.h"
+
+#include <stdint.h>
+
+typedef struct player {
+  uint16_t x;
+  uint16_t y;
+  uint16_t width;
+  uint16_t height;
+  uint16_t speed;
+} player_t;
+
+void player_init(player_t *player);
+
+// FIXME: Find out a better way to provide screen w and h properties
+void player_update(player_t     *player,
+                   controller_t *ctrl,
+                   int           screen_width,
+                   int           screen_height);
+
+void player_draw(player_t *player, SDL_Renderer *renderer);
+
+#endif /* PLAYER_H */