badge/jumpnrun/game_state.c

   1 #include "game_state.h"
   2
   3 void jumpnrun_game_state_init(jumpnrun_game_state *state, jumpnrun_level const *lv) {
   4   memset(state, 0, sizeof(*state));
   5   jumpnrun_player_spawn(&state->player, lv->start_pos, 99);
   6 }
   7
   8 void jumpnrun_game_state_respawn(jumpnrun_game_state *state, jumpnrun_level const *lv) {
   9   jumpnrun_player_respawn(&state->player, lv->start_pos);
  10   state->flags = 0;
  11   state->screen_left = 0;
  12   memset(state->shots, 0, sizeof(state->shots));
  13
  14   for(size_t i = 0; i < lv->header.enemy_count; ++i) {
  15     jumpnrun_enemy_reset(&lv->enemies[i]);
  16   }
  17 }
  18
  19 void jumpnrun_shot_spawn(jumpnrun_shot *shot, jumpnrun_game_state const *state) {
  20   static vec2d const shot_spawn_inertia = { FIXED_POINT_I(0, 800), FIXED_POINT_I(0, -800) };
  21
  22   shot->tick        = 0;
  23   shot->inertia     = shot_spawn_inertia;
  24
  25   if(jumpnrun_moveable_mirrored(&state->player.base)) {
  26     shot->current_box = rectangle_new((vec2d) { fixed_point_sub(rectangle_left(&state->player.base.hitbox), FIXED_INT(JUMPNRUN_SHOT_EXTENT)), rectangle_top(&state->player.base.hitbox) },
  27                                       (vec2d) { FIXED_INT(JUMPNRUN_SHOT_EXTENT), FIXED_INT(JUMPNRUN_SHOT_EXTENT) });
  28     shot->inertia.x   = fixed_point_neg(shot->inertia.x);
  29   } else {
  30     shot->current_box = rectangle_new((vec2d) { rectangle_right(&state->player.base.hitbox), rectangle_top(&state->player.base.hitbox) },
  31                                       (vec2d) { FIXED_INT(JUMPNRUN_SHOT_EXTENT), FIXED_INT(JUMPNRUN_SHOT_EXTENT) });
  32   }
  33
  34   shot->old_box = shot->current_box;
  35   shot->inertia = vec2d_add(shot->inertia, state->player.base.inertia);
  36 }